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august 2001 dsc-3619/04 1 ?2000 integrated device technology, inc. features u u u u u 64k x 32 memory configuration u u u u u supports high system speed: commercial: C a4 4.5ns clock access time (117 mhz) commercial and industrial: C 5 5ns clock access time (100 mhz) C 6 6ns clock access time (83 mhz) C 7 7ns clock access time (66 mhz) u u u u u single-cycle deselect functionality (compatible with micron part # mt58lc64k32d7lg-xx) u u u u u lbo input selects interleaved or linear burst mode u u u u u self-timed write cycle with global write control ( gw ), byte write enable ( bwe ), and byte writes ( bw x) u u u u u power down controlled by zz input u u u u u operates with a single 3.3v power supply (+10/-5%) u u u u u packaged in a jedec standard 100-pin rectangular plastic thin quad flatpack (tqfp). description the IDT71V632 is a 3.3v high-speed sram organized as 64k x 32 pin description summary pentium processor is a trademark of intel corp. powerpc is a trademark of international business machines, inc. 64k x 32 3.3v synchronous sram pipelined outputs burst counter, single cycle deselect IDT71V632 with full support of the pentium? and powerpc? processor interfaces. the pipelined burst architecture provides cost-effective 3-1-1-1 second- ary cache performance for processors up to 117mhz. the IDT71V632 sram contains write, data, address, and control registers. internal logic allows the sram to generate a self-timed write based upon a decision which can be left until the extreme end of the write cycle. the burst mode feature offers the highest level of performance to the system designer, as the IDT71V632 can provide four cycles of data for a single address presented to the sram. an internal burst address counter accepts the first cycle address from the processor, initiating the access sequence. the first cycle of output data will be pipelined for one cycle before it is available on the next rising clock edge. if burst mode operation is selected ( adv =low), the subsequent three cycles of output data will be available to the user on the next three rising clock edges. the order of these three addresses will be defined by the internal burst counter and the lbo input pin. the IDT71V632 sram utilizes idt's high-performance, high-volume 3.3v cmos process, and is packaged in a jedec standard 14mm x 20mm 100-pin thin plastic quad flatpack (tqfp) for optimum board density in both desktop and notebook applications. a 0 Ca 15 address inputs input synchronous ce chip enable input synchronous cs 0 , cs 1 chips selects input synchronous oe output enable input asynchronous gw global write enable input synchronous bwe byte write enable input synchronous bw 1, bw 2, bw 3, bw 4 individual byte write selects input synchronous clk clock input n/a adv burst address advance input synchronous adsc address status (cache controller) input synchronous adsp address status (processor) input synchronous lbo linear / interleaved burst order input dc zz sleep mode input asynchronous i/o 0 Ci/o 31 data input/output i/o synchronous v dd , v ddq 3.3v power n/a v ss , v ssq array ground, i/o ground power n/a 3619 tbl 01
6.42 2 IDT71V632, 64k x 32, 3.3v synchronous sram with pipelined outputs and single cycle deselect commercial and industrial temperature ranges symbol pin function i/o active description a 0 Ca 15 address inputs i n/a synchronous address inputs. the address register is triggered by a combination of the rising edge of clk and adsc low or adsp low and ce low. adsc address status (cache controller) i low synchronous address status from cache controller. adsc is an active low input that is used to load the address registers with new addresses. adsc is not gated by ce . adsp address status (processor) ilow synchronous address status from processor. adsp is an active low input that is used to load the address registers with new addresses. adsp is gated by ce . adv burst address advance i low synchronous address advance. adv is an active low input that is used to advance the internal burst counter, co ntrolling burst access after the initial address is loaded. when this input is high the burst counter is not incremented; that is, there is no address advance. bwe byte write enable i low synchronous byte write enable gates the byte write inputs bw 1 C bw 4 . if bwe is low at the rising edge of clk then bw x inputs are passed to the next stage in the circuit. a byte write can still be blocked if adsp is low at the rising edge of clk. if adsp is high and bw x is low at the rising edge of clk then data will be written to the sram. if bwe is high then the byte write inputs are blocked and only gw can initiate a write cycle. bw 1 C bw 4 individual byte write enables i low synchronous byte write enables. bw 1 controls i/o(7:0), bw 2 controls i/o(15:8), etc. any active byte write causes all outputs to be disabled. adsp low disables all byte writes. bw 1 C bw 4 must meet specified setup and hold times with respect to clk. ce chip enable i low synchronous chip enable. ce is used with cs 0 and cs 1 to enab le the IDT71V632. ce also gates adsp . clk clock i n/a this is the clock input. all timing references for the device are made with respect to this input. cs 0 chip select 0 i high synchronous active high chip select. cs 0 is used with ce and cs 1 to enable the chip. cs 1 chip select 1 i low synchronous active low chip select. cs 1 is used with ce and cs 0 to enable the chip. gw global write enable i low synchrono us global write enable. this input will write all four 8-bit data bytes when low on the rising edge of clk. gw supercedes individual byte write enables. i/o 0 Ci/o 31 data input/output i/o n/a synchronous data input/output (i/o) pins. both the data input path and data output path are registered and triggered by the rising edge of clk. lbo linear burst order i low asynchronous burst order sele ction dc input. when lbo is high the interleaved (intel) burst sequence is selected. when lbo is low the linear (powerpc) burst sequence is selected. lbo is a static dc input and must not change state while the device is operating. oe output enable i low asynchronous output enable. when oe is low the data output drivers are enabled on the i/o pins if the chip is also selected. when oe is high the i/o pins are in a high-impedence state. v dd power supply n/a n/a 3.3v core power supply inputs. v ddq power supply n/a n/a 3.3v i/o power supply inputs. v ss ground n/a n/a core ground pins. v ssq ground n/a n/a i/o ground pins. nc no connect n/a n/a nc pins are not electrically connected to the chip. zz sleep mode i high asynchronous sleep mode input. zz high will gate the clk internally and power down the IDT71V632 to its lowest power consumption level. data retention is guaranteed in sleep mode. 3 619 tb l 02 pin definitions (1) note: 1. all synchronous inputs must meet specified setup and hold times with respect to clk.
6.42 3 IDT71V632, 64k x 32, 3.3v synchronous sram with pipelined outputs and single cycle deselect commercial and industrial temperature ranges functional block diagram a 0 Ca 15 address register clr a 1 * a 0 * 16 2 16 a 2 Ca 15 64k x 32 bit memory array internal address a 0 ,a 1 bw 4 bw 3 bw 2 bw 1 byte 1 write register 32 32 adsp adv clk adsc cs0 cs 1 byte 1 write driver byte 2 write driver byte 3 write driver byte 4 write driver byte 2 write register byte 3 write register byte 4 write register 8 8 8 8 gw ce bwe lbo i/o 0 Ci/o 31 oe data input register 32 output buffer output register powerdown zz d q dq enable register enable delay register oe burst sequence ce clk en clk en q1 q0 2 burst logic binary counter 3619 drw 01 .
6.42 4 IDT71V632, 64k x 32, 3.3v synchronous sram with pipelined outputs and single cycle deselect commercial and industrial temperature ranges symbol parameter (1 ) conditions max. unit c in input capacitance v in = 3dv 6 pf c i/o i/o capacitance v out = 3dv 7 pf 3619 tbl 06 absolute maximum ratings (1) capacitance (t a = +25c, f = 1.0mhz, tqfp package) notes: 1. stresses greater than those listed under absolute maximum ratings may cause permanent damage to the device. this is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. exposure to absolute maximum rating conditions for extended periods may affect reliability. 2. v dd , v ddq and input terminals only. 3. i/o terminals. note: 1. this parameter is guaranteed by device characterization, but not production tested. symbol rating value unit v term (2 ) terminal voltage with respect to gnd C0.5 to +4.6 v v term (3 ) terminal voltage with respect to gnd C0.5 to v dd +0.5 v t a operating temperature 0 to +70 o c t bias temperature under bias C55 to +125 o c t stg storage temperature C55 to +125 o c p t power dissipation 1.0 w i out dc output current 50 ma 3619 tbl 05 recommended dc operating conditions notes: 1. v ih (max) = 6.0v for pulse width less than t cyc /2, once per cycle. 2. v ih (max) = v ddq + 1.0v for pulse width less than t cyc /2, once per cycle. 3. v il (min) = C1.0v for pulse width less than t cyc /2, once per cycle. symbol parameter min. max. unit v dd core supply voltage 3.135 3.63 v v ddq i/o supp ly vo ltage 3.135 3.63 v v ss, v ssq ground 0 0 v v ih inp ut hig h vo ltag e inp uts 2.0 5.0 (1) v v ih input high voltage i/o 2.0 v ddq +0.3 (2) v v il inp ut lo w vo ltag e C0.3 (3) 0.8 v 3619 tbl 04 recommended operating temperature and supply voltage grade temperature v ss v dd v ddq commercial 0c to +70c 0v 3.3v+10/-5% 3.3v+10/-5% industrial C40c to +85c 0v 3.3v+10/-5% 3.3v+10/-5% 3619 tbl 03
6.42 5 IDT71V632, 64k x 32, 3.3v synchronous sram with pipelined outputs and single cycle deselect commercial and industrial temperature ranges pin configuration top view tqfp 10099989796959493929190 87868584838281 89 88 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 a 6 a 7 c e c s 0 b w 4 b w 3 b w 2 b w 1 c s 1 v d d v s s c lk g w b w e o e a d s c a d s p a d v a 8 a 9 nc 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 n c n c n c n c n c lb o a 14 a 13 a 12 a 11 a 10 v d d v s s a 0 a 1 a 2 a 3 a 4 a 5 nc i/o 31 i/o 30 v ddq v ssq i/o 29 i/o 28 i/o 27 i/o 26 v ssq v ddq i/o 25 i/o 24 v ss v dd i/o 23 i/o 22 v ddq v ssq i/o 21 i/o 20 i/o 19 i/o 18 v ssq v ddq i/o 17 i/o 16 nc 80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 nc i/o 14 v ddq v ssq i/o 13 i/o 12 i/o 11 i/o 10 v ssq v ddq i/o 9 i/o 8 v ss nc v dd zz (2) i/o 7 i/o 6 v ddq v ssq i/o 5 i/o 4 i/o 3 i/o 2 v ssq v ddq i/o 1 i/o 0 nc pk100-1 3619 drw 02 v dd /nc (1) i/o 15 a 15 notes: 1. pin 14 can either be directly connected to v dd or not connected. 2. pin 64 can be left unconnected and the device will always remain in active mode.
6.42 6 IDT71V632, 64k x 32, 3.3v synchronous sram with pipelined outputs and single cycle deselect commercial and industrial temperature ranges synchronous truth table (1,2) notes: 1. l = v il , h = v ih , x = dont care. 2. zz = low for this table. 3. oe is an asynchronous input. operation address used ce cs 0 cs 1 adsp adsc adv gw bwe bw x oe (3 ) clk i/o deselected cycle, power down none h x x x l x x x x x - hi-z deselected cycle, power down nonelxhlxxxxxx - hi-z deselected cycle, power down nonellx lxxxxxx - hi-z deselected cycle, power down none l x h x l x x x x x - hi-z deselected cycle, power down none l l x x l x x x x x - hi-z read cycle, begin burst external l h l l xxxxx l - d out read cycle, begin burst external l h l l xxxxxh - hi-z read cycle, begin burst external l h l h l x h h x l - d out read cycle, begin burst external l h l h l x h l h l - d out read cycle, begin burst external l h l h l x h l h h - hi-z write cycle, begin burst external l h l h l x h l l x - d in write cycle, begin burst external l h l h l x l x x x - d in read cycle, continue burst next x x x h h l h h x l - d out read cycle, continue burst next x x x h h l h h x h - hi-z read cycle, continue burst next x x x h h l h x h l - d out read cycle, continue burst next x x x h h l h x h h - hi-z read cycle, continue burst next h x x x h l h h x l - d out read cycle, continue burst next h x x x h l h h x h - hi-z read cycle, continue burst next h x x x h l h x h l - d out read cycle, continue burst next h x x x h l h x h h - hi-z write cycle, continue burst next x x x h h l h l l x - d in write cycle, continue burst next x x x h h l l x x x - d in write cycle, continue burst next h x x x h l h l l x - d in write cycle, continue burst next h x x x h l l x x x - d in read cycle, suspend burst current x x x h h h h h x l - d out read cycle, suspend burst current x x x h h h h h x h - hi-z read cycle, suspend burst current x x x h h h h x h l - d out read cycle, suspend burst current x x x h h h h x h h - hi-z read cycle, suspend burst current h x x x h h h h x l - d out read cycle, suspend burst current h x x x h h h h x h - hi-z read cycle, suspend burst current h x x x h h h x h l - d out read cycle, suspend burst current h x x x h h h x h h - hi-z write cycle, suspend burst current x x x h h h h l l x - d in write cycle, suspend burst current x x x h h h l x x x - d in write cycle, suspend burst current h x x x h h h l l x - d in write cycle, suspend burst current h x x x h h l x x x - d in 3619 tbl 07
6.42 7 IDT71V632, 64k x 32, 3.3v synchronous sram with pipelined outputs and single cycle deselect commercial and industrial temperature ranges operation (2 ) oe zz i/o status power read l l data out (i/o 0 - i/o 31 )active read h l high-z active write x l high-z data in (i/o 0 - i/o 31 )active deselected x l high-z standby sleep x h high-z sleep 3619 tbl 09 operation gw bwe bw 1 bw 2 bw 3 bw 4 read hhxxxx read h l h h h h write all bytes l x x x x x write all bytes h l l l l l write byte 1 (2 ) hl lhhh write byte 2 (2 ) hlhlhh write byte 3 (2 ) hlhhlh write byte 4 (2 ) hlhhhl 3619 tbl 08 linear burst sequence table ( lbo =v ss ) interleaved burst sequence table ( lbo =v dd ) asynchronous truth table (1) synchronous write function truth table (1) notes: 1. l = v il , h = v ih , x = dont care. 2. multiple bytes may be selected during the same cycle. notes: 1. l = v il , h = v ih , x = dont care. 2. synchronous function pins must be biased appropriately to satisfy operation requirements. note: 1. upon completion of the burst sequence the counter wraps around to its initial state. note: 1. upon completion of the burst sequence the counter wraps around to its initial state. sequence 1 sequence 2 sequence 3 sequence 4 a1 a0 a1 a0 a1 a0 a1 a0 first address 0 0 0 1 1 0 1 1 second address 0 1 0 0 1 1 1 0 third address 1 0 1 1 0 0 0 1 fourth address (1 ) 11 10 01 00 3619 tbl 10 sequence 1 sequence 2 sequence 3 sequence 4 a1 a0 a1 a0 a1 a0 a1 a0 first address 0 0 0 1 1 0 1 1 second address 0 1 1 0 1 1 0 0 third address 1 0 1 1 0 0 0 1 fourth address (1 ) 11 00 01 10 3619 tbl 11
6.42 8 IDT71V632, 64k x 32, 3.3v synchronous sram with pipelined outputs and single cycle deselect commercial and industrial temperature ranges sa4 (3,4 ) s5 s6 s7 symbol parameter test conditions com'l. ind. com'l. ind. com'l. ind. com'l. ind. unit i dd operating power supply current device selected, outputs open, v dd = max., v in > v ih or < v il , f = f max (2 ) 220 200 200 180 180 160 160 ma i sb standby power supply current device deselected, outputs open, v dd = max., v in > v ih or < v il , f = f max (2 ) 70 65 6560605555ma i sb1 full standby power supply current device deselected, outputs open, v dd = max., v in > v hd or < v ld , f = 0 (2 ) 15 15 1515151515ma i zz full sleep mode power supply current zz > v hd , v dd = max. 10 10 1010101010ma 3619 tbl 13 v ddq /2 50 w i/o z 0 =50 w 3619 drw 03 dc electrical characteristics over the operating temperature and supply voltage range (1) (v hd = v ddq ? 0.2v , v ld = 0.2v) figure 3. lumped capacitive load, typical derating * including scope and jig capacitance. figure 2. high-impedence test load (for t ohz , t chz , t olz , and t dc1) dc electrical characteristics over the operating temperature and supply voltage range (v dd = 3.3v +10/-5%) ac test loads 1 2 3 4 20 30 50 100 200 d t cd (typical, ns) capacitance (pf) 80 5 6 3619 drw 05 351 w +3.3v 317 w 5pf* i/o 3619 drw 04 note: 1. the lbo pin will be internally pulled to v dd if it is not actively driven in the application and the zz pin will be internally pulled to v ss if not actively driven. notes: 1. all values are maximum guaranteed values. 2. at f = f max, inputs are cycling at the maximum frequency of read cycles of 1/t cyc while adsc = low; f=0 means no input lines are changing. 3. sa4 speed grade corresponds to a t cd of 4.5 ns. 4. 0c to +70c temperature range only. symbol parameter test conditions min. max. unit |i li | input leakage current v dd = max., v in = 0v to v dd 5a |i lzz | zz and lbo input leakage current (1 ) v dd = max., v in = 0v to v dd 30a |i lo | output leakage current ce > v ih or oe > v ih , v out = 0v to v dd , v dd = max. 5a v ol (3.3v) output low voltage i ol = 5ma, v dd = min. 0.4 v v oh (3.3v) output high voltage i oh = C5ma, v dd = min. 2.4 v 3619 tbl 12 figure 1. ac test load ac test conditions input pulse levels input rise/fall times input timing reference levels output timing reference levels ac test load 0 to 3.0v 2ns 1.5v 1.5v see figures 1 and 2 3619 tbl 14
6.42 9 IDT71V632, 64k x 32, 3.3v synchronous sram with pipelined outputs and single cycle deselect commercial and industrial temperature ranges symbol parameter 71v632sa4 (5,6 ) 71v632s5 71v632s6 71v632s7 unit min. max. min. max. min. max. min. max. clock parameters t cyc clock cycle time 8.5 ____ 10 ____ 12 ____ 15 ____ ns t ch (1 ) clock high pulse width 3.5 ____ 4 ____ 4.5 ____ 5 ____ ns t cl (1 ) clock low pulse width 3.5 ____ 4 ____ 4.5 ____ 5 ____ ns output parameters t cd clock high to valid data ____ 4.5 ____ 5 ____ 6 ____ 7ns t cdc clock high to data change 1.5 ____ 1.5 ____ 2 ____ 2 ____ ns t clz (2 ) clock high to output active 0 ____ 0 ____ 0 ____ 0 ____ ns t chz (2 ) clock high to data high-z 1.5 4 1.5 5 2 5 2 6 ns t oe output enable access time ____ 4 ____ 5 ____ 5 ____ 6ns t olz (2 ) output enable low to data active 0 ____ 0 ____ 0 ____ 0 ____ ns t ohz (2 ) output enable high to data high-z ____ 4 ____ 4 ____ 5 ____ 6ns setup times t sa address setup time 2.2 ____ 2.5 ____ 2.5 ____ 2.5 ____ ns t ss address status setup time 2.2 ____ 2.5 ____ 2.5 ____ 2.5 ____ ns t sd data in setup time 2.2 ____ 2.5 ____ 2.5 ____ 2.5 ____ ns t sw write setup time 2.2 ____ 2.5 ____ 2.5 ____ 2.5 ____ ns t sav address advance setup time 2.2 ____ 2.5 ____ 2.5 ____ 2.5 ____ ns t sc chip enable/select setup time 2.2 ____ 2.5 ____ 2.5 ____ 2.5 ____ ns hold times t ha address hold time 0.5 ____ 0.5 ____ 0.5 ____ 0.5 ____ ns t hs address status hold time 0.5 ____ 0.5 ____ 0.5 ____ 0.5 ____ ns t hd data in hold time 0.5 ____ 0.5 ____ 0.5 ____ 0.5 ____ ns t hw write hold time 0.5 ____ 0.5 ____ 0.5 ____ 0.5 ____ ns t hav address advance hold time 0.5 ____ 0.5 ____ 0.5 ____ 0.5 ____ ns t hc chip enable/select hold time 0.5 ____ 0.5 ____ 0.5 ____ 0.5 ____ ns sleep mode and configuration parameters t zzpw zz pulse width 100 ____ 100 100 ____ 100 ____ ns t zzr (3 ) zz recovery time 100 ____ 100 100 ____ 100 ____ ns t cfg (4 ) configuration set-up time 34 ____ 40 50 ____ 50 ____ ns 3619 tbl 15 notes: 1. measured as high above 2.0v and low below 0.8v. 2. transition is measured 200mv from steady-state. 3. device must be deselected when powered-up from sleep mode. 4. t cfg is the minimum time required to configure the device based on the lbo input. lbo is a static input and must not change during normal operation. 5. the 71v632sa4 speed grade corresponds to a t cd of 4.5ns. 6. 0c to +70c temperature range only. ac electrical characteristics (v dd, v ddq = 3.3v +10/-5%, commercial and industrial temperature ranges)
6.42 10 IDT71V632, 64k x 32, 3.3v synchronous sram with pipelined outputs and single cycle deselect commercial and industrial temperature ranges timing waveform of pipelined read cycle (1,2) notes: 1. o1 (ax) represents the first output from the external address ax. o1 (ay) represents the first output from the external addre ss ay; o2 (ay) represents the next output data in the burst sequence of the base address ay, etc. where a 0 and a 1 are advancing for the four word burst in the sequence defined by the state of the lbo input. 2. zz input is low and lbo is dont care for this cycle. 3. cs 0 timing transitions are identical but inverted to the ce and cs 1 signals. for example, when ce and cs 1 are low on this waveform, cs 0 is high. t c h z t s a t s c t h s g w , b w e , b w x t s w t c l t s a v t h w t h a v c lk a d s p a d s c (1) a d d r e s s t c y c t c h t h a t h c t o e t o h z o e t c d t o lz o 1(a x) d a t a o u t t c d c o 1(a y) o 3(a y) o 2(a y) o 2(a y) t c lz a d v a d v inserts a w ait-state c e , c s 1 (n ote 3) 3619 drw 06 p ipelined r ead b urst p ipelined r ead o utput d isabled a x a y t s s o 1(a y) (b urst w raps around to its initial state) o 4(a y)
6.42 11 IDT71V632, 64k x 32, 3.3v synchronous sram with pipelined outputs and single cycle deselect commercial and industrial temperature ranges timing waveform of combined pipelined read and write cycles (1,2,3) notes: 1. device is selected through entire cycle; ce and cs 1 are low, cs 0 is high. 2. zz input is low and lbo is dont care for this cycle. 3. o1(ax) represents the first output from the external address ax. i1 (ay) represents the first input from the external address ay. o1(az) represents the first output from the external addresss az; o2(az) represents the next output data in the burst sequence of the base address az, etc. where a 0 and a 1 are advancing for the four word burst in the sequence defined by the state of the lbo input. c lk a d s p a d d r e s s g w a d v o e d a t a o u t t c y c t c h t c l t h a t s w t h w t c lz a x a y a z t h s i1(a y) t s d t h d t o lz t c d t c d c d a t a in (2) t o e o 1(a z) o 1(a z) 3619 drw 07 s ingle r ead p ipelined b urst r ead p ipelined w rite o 1(a x) t o h z t s s t s a o 3(a z) o 2(a z)
6.42 12 IDT71V632, 64k x 32, 3.3v synchronous sram with pipelined outputs and single cycle deselect commercial and industrial temperature ranges a d d r e s s c lk a d s p a d s c t c y c t s s t h s t c h t c l t h a t s a a x a y a z a d v d a t a o u t o e t h c t s d i1(a x) i1(a z) i2(a y) th d t o h z d a t a in t h a v o 3(a w ) o 4(a w ) c e , c s 1 g w t s w (n ote 3) i2(a z) b urst w rite b urst r ead 3619 drw 08 b urst w rite s ingle w rite i3(a z) i4(a y) i3(a y) i2(a y) t s a v ( a d v suspends burst) i1(a y) b w e is ignored w hen a d s p initiates burs t t s c . t h w timing waveform of write cycle no. 1 ? gw controlled (1,2,3) notes: 1. zz input is low, bwe is high, and lbo is dont care for this cycle. 2. o4(aw) represents the final output data in the burst sequence of the base address aw. i1(ax) represents the first input from the external address ax. i1(ay) represents the first input from the external address ay; i2(ay) represents the next input data in the burst sequence of the base address ay, etc. where a0 and a1 are advancing for the four word burst in the sequence defined by the state of the lbo input. in the case of input i2(ay) this data is valid for two cycles because adv is high and has suspended the burst. 3. cs 0 timing transitions are identical but inverted to the ce and cs 1 signals. for example, when ce and cs 1 are low on this waveform, cs 0 is high.
6.42 13 IDT71V632, 64k x 32, 3.3v synchronous sram with pipelined outputs and single cycle deselect commercial and industrial temperature ranges timing waveform of write cycle no. 2 ? byte controlled (1,2,3) notes: 1. zz input is low, gw is high, and lbo is dont care for this cycle. 2. o4(aw) represents the final output data in the burst sequence of the base address aw. i1(ax) represents the first input from the external address ax. i1(ay) represents the first input from the external address ay; i2(ay) represents the next input data in the burst sequence of the base address ay, etc. where a 0 and a 1 are advancing for the four word burst in the sequence defined by the state of the lbo input. in the case of input i2(ay) this data is valid for two cycles because adv is high and has suspended the burst. 3. cs 0 timing transitions are identical but inverted to the ce and cs 1 signals. for example, when ce and cs 1 are low on this waveform, cs 0 is high. a d d r e s s c lk a d s p a d s c t c y c t s s t h s t c h t c l t h a t s a a x a y b w x a d v d a t a o u t o e t h c t s d s ingle w rite b urst w rite i1(a x) i2(a y) i2(a y) ( a d v suspends burst) i2(a z) th d b urst r ead e xtended b urst w rite t o h z d a t a in t s a v t s w o 4(a w ) c e , c s 1 b w e t s w (n ote 3) i1(a z) a z i4(a y) i1(a y) 3619 drw 09 i4(a y) i3(a y) t s c b w e is ignored w hen a d s p initiates burs t b w x is ignored w hen a d s p initiates burs t i3(a z) o 3(a w ) t h w t h w
6.42 14 IDT71V632, 64k x 32, 3.3v synchronous sram with pipelined outputs and single cycle deselect commercial and industrial temperature ranges timing waveform of sleep (zz) and power-down modes (1,2,3) notes: 1. device must power up in deselected mode. 2. lbo input is dont care for this cycle. 3. it is not necessary to retain the state of the input registers throughout the power-down cycle. 4. cs 0 timing transitions are identical but inverted to the ce and cs 1 signals. for example, when ce and cs 1 are low on this waveform, cs 0 is high. t c y c t s s t c l t c h t h a t s a t s c t h c t o e t o lz t h s c lk a d s p a d s c a d d r e s s g w c e , c s 1 a d v d a t a o u t o e z z s ingle r ead s nooze m ode t z z p w 3619 drw 10 o 1(a x) a x (n ote 4) t z z r a z
6.42 15 IDT71V632, 64k x 32, 3.3v synchronous sram with pipelined outputs and single cycle deselect commercial and industrial temperature ranges clk adsp gw , bwe , bw x ce , cs 1 cs 0 address adsc data out oe av aw ax ay az (av) (aw) (ax) (ay) 3619 drw 11 , non-burst read cycle timing waveform notes: 1. zz input is low, adv is high and lbo is dont care for this cycle. 2. (a x ) represents the data for address a x , etc. 3. for read cycles, adsp and adsc function identically and are therefore interchangeable.
6.42 16 IDT71V632, 64k x 32, 3.3v synchronous sram with pipelined outputs and single cycle deselect commercial and industrial temperature ranges clk adsp gw ce , cs 1 cs 0 address adsc data in av aw ax az ay (av) (aw) (ax) (az) (ay) 3619 drw 12 , non-burst write cycle timing waveform notes: 1. zz input is low, adv and oe are high, and lbo is dont care for this cycle. 2. (a x ) represents the data for address a x , etc. 3. although only gw writes are shown, the functionality of bwe and bw x together is the same as gw . 4. for write cycles, adsp and adsc have different limitations.
6.42 17 IDT71V632, 64k x 32, 3.3v synchronous sram with pipelined outputs and single cycle deselect commercial and industrial temperature ranges 100-pin thin quad plastic flatpack (tqfp) package diagram outline
6.42 18 IDT71V632, 64k x 32, 3.3v synchronous sram with pipelined outputs and single cycle deselect commercial and industrial temperature ranges ordering information plastic thin quad flatpack, 100 pin (pk100-1) s power x speed pf package pf idt 71v632 a4* 5 6 7 synchronous access time in nanoseconds 3619 drw 13 device type part number speed in megahertz t cd parameter clock cycle time 71v632sa4pf 71v632s5pf 71v632s6pf 71v632s7pf 117 mhz 100 mhz 83 mhz 66 mhz 4.5 ns 5ns 6ns 7ns 8.5 ns 10 ns 12 ns 15 ns * commercial only. x process/ temperature range blank i commercial (0c to +70c) industrial (C40c to +85c)
6.42 19 IDT71V632, 64k x 32, 3.3v synchronous sram with pipelined outputs and single cycle deselect commercial and industrial temperature ranges datasheet document history corporate headquarters for sales: for tech support: 2975 stender way 800-345-7015 or 408-727-6116 sramhelp@idt.com santa clara, ca 95054 fax: 408-492-8674 800-544-7726, x4033 www.idt.com the idt logo is a registered trademark of integrated device technology, inc. 9/9/99 updated to new format pg. 1, 8, 9, 17 revised speed offerings to 66C117mhz pg. 15, 16 added non-burst read and write cycle timing diagrams pg. 18 added datasheet document history 09/30/99 pg. 1, 4, 8, 9, 17 added industrial temperature range offerings 04/04/00 pg. 17 added 100pintqfp package diagram outline 08/09/00 not recommended for new designs 08/17/01 removed not recommended for new designs from the background on the datasheet

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