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contents features ................................ ................................ ..................... 1 pin assignment ................................ ................................ ........... 1 pin functions ................................ ................................ .............. 1 block diagram ................................ ................................ ............ 2 instruction set ................................ ................................ ............ 2 absolute maximum ratings ................................ ........................ 2 recommended operationg conditions ................................ ....... 2 pin capacitance ................................ ................................ ......... 3 endurance ................................ ................................ .................. 3 dc electrical characteristics ................................ ...................... 3 ac electrical characteristics ................................ ....................... 4 operation ................................ ................................ .................... 5 receiving a start-bit ................................ ................................ ... 9 three-wire interface (di-do direct connection) ................................ ........................... 9 dimensions (unit : mm) ................................ .............................. 10 ordering information ................................ ................................ ... 10 characteristics ................................ ................................ ............ 11
seiko instruments inc. 1 the s-29uxx0a series is low power 1k/2k/4k-bit e 2 prom with a low operating voltage range. they are organized as 64-word 16- bit, 128-word 16-bit and 256-word 16-bit, respectively. each is capable of sequential read, at which time addresses are automatically incremented in 16-bit blocks. the instruction code is compatible with the nm93csxx series. pin assignment pin functions table 1 pin number name sop2 ssop function cs 11 chip select input sk 22 serial clock input di 33 serial data input do 44 serial data output gnd 55 ground test 66 test pin (normally kept open) (can be connected to gnd or vcc) nc 77 no connection v cc 88 power supply cmos serial e 2 prom s-29uxx0a series features low power consumption standby : 2.0 a max. (vcc=3.6 v) operating : 0.6 ma max. (vcc=3.6 v) 0.4 ma max. (vcc=2.7 v) low operating voltage range read : 0.9 to 3.6 v write : 1.8 to 3.6 v sequential read capable endurance : 10 5 cycles/word data retention : 10 years s-29u130a : 1k bits nm93cs46 instruction code compatible s-29u220a : 2k bits nm93cs56 instruction code compatible s-29u330a : 4k bits nm93cs66 instruction code compatible sk 8-pin sop2 top view v cc nc test gnd do 6 5 8 7 3 4 1 2 8-pin ssop top view 1 2 3 4 8 7 6 5 cs sk di do v cc nc test gnd figure 1 cs di *see dimensions s-29u130adfe s-29u220adfe s-29u330adfe s-29u130afs s-29u220afs s-29u330afs
cmos serial e 2 prom s-29uxx0a series 2 seiko instruments inc. block diagram instruction set table 2 address instruction start bit op code s-29u130a s-29u220a s-29u330a data read (read data) 1 10 a 5 to a 0 xa 6 to a 0 a 7 to a 0 d 15 to d 0 output* write (write data) 1 01 a 5 to a 0 xa 6 to a 0 a 7 to a 0 d 15 to d 0 input erase (erase data) 1 11 a 5 to a 0 xa 6 to a 0 a 7 to a 0 ewen (program enable) 1 00 11xxxx 11xxxxxx 11xxxxxx ewds (program disable) 1 00 00xxxx 00xxxxxx 00xxxxxx x : doesnt matter. * : addresses are continuously incremented. absolute maximum ratings recommended operating conditions table 4 parameter symbol conditions min. typ. max. unit read operation write enable/disable 0.9 3.6 v power supply voltage v cc write operation 1.8 3.6 v v cc =1.8 to 3.6v 0.8 v cc v cc v high level input voltage v ih v cc =0.9 to 1.8v 0.9 v cc v cc v v cc =1.8 to 3.6v 0.0 0.2 v cc v low level input voltage v il v cc =0.9 to 1.8v 0.0 0.1 v cc v operating temperature t opr C40 +85 c parameter symbol ratings unit power supply voltage v cc C0.3 to +7.0 v input voltage v in C0.3 to v cc +0.3 v output voltage v out C0.3 to v cc v storage temperature under bias t bias C-50 to +95 c storage temperature t stg C65 to +150 c fi g ure 2 memory array data register address decoder mode decode logic clock generator output buffer v cc gnd do di cs sk table 3
cmos serial e 2 prom s-29uxx0a series seiko instruments inc. 3 pin capacitance table 5 (ta=25 c, f=1.0 mhz, v cc =5 v) parameter symbol conditions min. typ. max. unit input capacitance c in v in =0 v 8 pf output capacitance c out v out =0 v 10 pf endurance table 6 parameter symbol min. typ. max. unit endurance n w 10 5 cycles/word dc electrical characteristics v cc =2.7 v to 3.6 v v cc =1.8 to 2.7 v v cc =0.9 to 1.8 v unit parameter smbl conditions min. typ. max. min. typ. max. min. typ. max. cs=gnd do=open connected to v cc or gnd topr=C10 to +70 c 1.01.01.0 a standby current consumption i sb cs=gnd do=open connected to v cc or gnd topr=C40 to +85c 2.02.02.0 a input leakage current i li v in =gnd to v cc 0.1 1.0 0.1 1.0 0.1 1.0 a output leakage current i lo v out =gnd to v cc 0.1 1.0 0.1 1.0 0.1 1.0 a i ol =100 a 0.10.1 v i ol =30 a 0.10.1 v low level output voltage v ol i ol =10 a 0.10.10.2 v i oh =C100 a v cc - 0.7 v i oh =C10 a v cc - 0.7 v cc - 0.3 v high level output voltage v oh i oh =C5 a v cc - 0.7 v cc - 0.3 v cc - 0.2 v write enable latch data hold voltage v dh only when write disable mode 0.8 0.8 0.8 v v cc =2.7 v to 3.6 vv cc =1.8 to 2.7 v v cc =0.9 to 1.8 v parameter smb conditions min. typ. max. min. typ. max. min. typ. max. unit current consumption (read) i cc1 do unloaded 0.60.40.2 ma current consumption (program) i cc2 do unloaded 1.51.0 ma table 7 table 8
cmos serial e 2 prom s-29uxx0a series 4 seiko instruments inc. ac electrical characteristics table 9 input pulse voltage 0.1 v cc to 0.9 v cc output reference voltage 0.5 v cc output load 100pf table 10 v cc =2.7 to 3.6v v cc =1.8 to 2.7 v v cc =0.9 to 1.8v parameter smbl conditions min. typ. max. min. typ. max. min. typ. max. unit cs setup time t css 0.4 1.0 10 s cs hold time t csh 0.4 1.0 10 s cs deselect time t cds 0.2 0.4 4 s data setup time t ds 0.4 0.8 8 s data hold time t dh 0.4 0.8 8 s topr=C10 to +70c 1.0 2.0 50 s output delay t pd topr=C40 to +85c 1.0 2.0 100 s topr=C10 to +70c 0 500 0 250 10 khz clock frequency f sk topr=C40 to +85c 0 500 0 250 5 khz topr=C10 to +70c 1.0 2.0 50 s clock pulse width t skh t skl topr=C40 to +85c 1.0 2.0 100 s output disable time t hz1 t hz2 0 0.5 0 1.0 0 50 s output enable time t sv 0 0.5 0 1.0 0 50 s programming time t pr 4 . 0 10.0 4 . 0 10.0 ms figure 3 timing chart t skh t cds t css cs valid data valid data di t skl sk t sv t hz2 t csh t hz1 t pd t pd t ds t dh t ds t dh hi-z hi-z hi-z do do hi-z (verify) (read)
cmos serial e 2 prom s-29uxx0a series seiko instruments inc. 5 operation d 15 d 15 d 14 d 14 d 13 d 14 hi - z a 5 a 4 a 3 a 2 a 1 a 0 +1 d 13 d 0 d 1 d 2 d 15 0 hi-z a 0 a 1 a 2 a 3 a 4 a 5 0 1 1 28 27 26 25 24 23 12 11 10 9 8 7 6 5 4 3 2 1 44 43 42 41 40 39 a 5 a 4 a 3 a 2 a 1 a 0 +2 d 13 d 0 d 1 d 2 cs sk di do figure 4 read timing (s-29u130a) a 0 a 6 12 45 29 14 d 15 d 15 d 14 d 14 d 13 d 14 hi - z a 6 a 5 a 4 a 3 a 2 a 1 a 0 +1 d 13 d 0 d 1 d 2 d 15 0 hi-z a 1 a 2 a 3 a 4 a 5 x 0 1 1 28 27 26 25 24 11 10 9 8 7 6 5 4 3 2 1 44 43 42 41 40 a 6 a 5 a 4 a 3 a 2 a 1 a 0 +2 d 13 d 0 d 1 d 2 13 cs sk di do figure 5 read timing (s-29u220a) a 0 a 6 12 45 29 14 d 15 d 15 d 14 d 14 d 13 d 14 hi - z a 7 a 6 a 5 a 4 a 3 a 2 a 1 a 0 +1 d 13 d 0 d 1 d 2 d 15 0 hi-z a 1 a 2 a 3 a 4 a 5 a 7 0 1 1 28 27 26 25 24 11 10 9 8 7 6 5 4 3 2 1 44 43 42 41 40 a 7 a 6 a 5 a 4 a 3 a 2 a 1 a 0 +2 d 13 d 0 d 1 d 2 13 cs sk di do figure 6 read timing (s-29u330a) instructions (in the order of start-bit, instruction, address, and data) are latched to di in synchronization with the rising edge of sk after cs goes high. a start-bit can only be recognized when the high of di is latched to the rising edge of sk when cs goes from low to high, it is impossible for it to be recognized as long as di is low, even if there are sk pulses after cs goes high. any sk pulses input while di is low are called "dummy clocks." dummy clocks can be used to adjust the number of clock cycles needed by the serial ic to match those sent out by the cpu. instruction input finishes when cs goes low, where it must be between commands during t cds . all input, including di and sk signals, is ignored while cs is low, which is stand-by mode. 1. read the read instruction reads data from a specified address. after a0 is latched at the rising edge of sk, do output changes from a high-impedance state (hi-z) to low level output. data is continuously output in synchronization with the rise of sk. when all of the data (d0) in the specified address has been read, the data in the next address can be read with the input of another sk clock. thus, it is possible for all of the data addresses to be read through the continuous input of sk clocks as long as cs is high. the last address (an a1 a0 = 1 11) rolls over to the top address (an a0 = 0 00).
cmos serial e 2 prom s-29uxx0a series 6 seiko instruments inc. 2. write (write, erase) there are two write instructions, write and erase. each automatically begins writing to the non-volatile memory when cs goes low at the completion of the specified clock input. the write operation is completed in 10 ms (t pr max.), and the typical write period is less than 5 ms. in the s- 29uxx0a series, it is easy to verify the completion of the write operation in order to minimize the write cycle by setting cs to high and checking the do pin, which is low during the write operation and high after its completion. this verify procedure can be executed over and over again. because all sk and di inputs are ignored during the write operation, any input of instruction will also be disregarded. when do outputs high after completion of the write operation or if it is in the high-impedence state (hi-z), the input of instructions is available. even if the do pin remains high, it will enter the high-impedence state upon the recognition of a high of di (start-bit) attached to the rising edge of an sk pulse (see figure 3). di input should be low during the verify procedure. 2.1 write this instruction writes 16-bit data to a specified address. after changing cs to high, input a start-bit, op-code (write), address, and 16-bit data. if there is a data overflow of more than 16 bits, only the last 16-bits of the data is considered valid. changing cs to low will start the write operation. it is not necessary to make the data "1" before initiating the write operation. figure 7 write timing (s-29u130a) t cds t pr busy hi-z t sv verify hi-z 1 cs sk di do t hz1 2 345678910 25 0 1 d0 ready a5 a4 a3 a2 a1 a0 d15 figure 8 write timing (s-29u220a) t cds t pr busy hi-z t sv verify hi-z 1 cs sk di do t hz1 2 3 4 5 6 7 8 9 10 11 12 27 0 1 d0 ready xa6 a5 a4 a3 a2 a1 a0 d15 figure 9 write timing (s-29u330a) t cds t pr busy hi-z t sv verify hi-z 1 cs sk di do t hz1 2 3 4 5 6 7 8 9 10 11 12 27 0 1 d0 ready a7 a6 a5 a4 a3 a2 a1 a0 d15
cmos serial e 2 prom s-29uxx0a series seiko instruments inc. 7 2.2 erase this command erases 16-bit data in a specified address. after changing cs to high, input a start-bit, op-code (erase), and address. it is not necessary to input data. changing cs to low will start the erase operation, which changes every bit of the 16 bit data to "1." figure 10 erase timing (s-29u130a) t cds t pr busy hi-z t sv verify hi-z 1 cs sk di do t hz1 2 3456789 1 a0 ready 1 a5 a4 a3 a2 a1 figure 11 erase timing (s-29u220a) t cds t pr busy hi-z t sv verify hi-z 1 cs sk di do t hz1 2 34567891011 1a0 ready 1 x a6a5a4a3a2a1 figure 12 erase timing (s-29u330a) t cds t pr busy hi-z t sv verify hi-z 1 cs sk di do t hz1 2 34567891011 1a0 ready 1 a7 a6 a5 a4 a3 a2 a1
cmos serial e 2 prom s-29uxx0a series 8 seiko instruments inc. 3. write enable (ewen) and write disable (ewds) the ewen instruction puts the s-29uxx0a series into write enable mode, which accepts write and erase instructions. the ewds instruction puts the s-29uxx0a series into write disable mode, which refuses write and erase instructions. the s-29uxx0a series powers on in write disable mode, which protects data against unexpected, erroneous write operations caused by noise and/or cpu malfunctions. it should be kept in write disable mode except when performing write operations. figure 13 ewen/ewds timing (s-29u130a) 4xs 11=ewen 00=ewds 0 8 7 6 5 4 3 2 1 sk di 0 9 cs figure 14 ewen/ewds timing (s-29u220a) figure 15 ewen/ewds timing (s-29u330a) 6xs 11=ewen 00=ewds 0 8 7 6 5 4 3 2 1 sk di 0 11 9 cs 10 6xs 11=ewen 00=ewds 0 8 7 6 5 4 3 2 1 sk di 0 11 9 cs 10
cmos serial e 2 prom s-29uxx0a series seiko instruments inc. 9 receiving a start-bit both the recognition of a start-bit and the verify procedure occur when cs is high . therefore, only after a write operation, in order to accept the next command by having cs go high, will the do pin switch from a state of high- impedence to a state of data output; but if it recognizes a start-bit, the do pin returns to a state of high-impedence. three-wire interface (di-do direct connection) although the normal configuration of a serial interface is a 4-wire interface to cs, sk, di, and do, a 3-wire interface is also a possibility by connecting di and do. however, since there is a possibility that the do output from the serial memory ic will interfere with the data output from the cpu with a 3-wire interface, install a resistor between di and do in order to give preference to data output from the cpu to di(see figure 16). di sio figure 16 do cpu s-29uxx0a r : 10~100 k
cmos serial e 2 prom s-29uxx0a series 10 seiko instruments inc. dimensions (unit : mm) 1. 8-pin dip 2. 8-pin sop ordering information 1.27 0 min. 0.4 0.1 1.5 0.1 1.7max. 0.15 +0.1 -0.05 0.4 4.4 4 5 8 1 5.2 (5.5 max.) 6.2 0.3 figure 17 4.4 3.12 (3.42 max.) 6.4 0.3 0.65 0.22 0.10 1.15 0.05 1.30max. 0.15 +0.10 C0.05 0.5 0.2 figure 18 0 min. s-29uxx0a xxx package dfe : sop2 fs : ssop product name s-29u130a: 1k-bit s-29u220a: 2k-bit s-29u330a: 4k-bit
cmos serial e 2 prom s-29uxx0a series seiko instruments inc. 11 characteristics 1. dc characteristics ta ( c) 0.4 0.2 v cc =3.3 v f sk =500 khz data=0101 0 -40 0 85 i cc1 (ma) ta ( c) 0.4 0.2 v cc =1.8 v f sk =10 khz data=0101 0 -40 0 85 i cc1 (ma) 0.4 0.2 0 23456 7 ta=25 c f sk =1 mhz, 500 khz data=0101 v cc (v) 0.4 0.2 0 23456 7 ta=25 c f sk =100 khz, 10 khz data=0101 v cc (v) ta ( c) 1.0 0.5 v cc =3.3 v 0 -40 0 85 i cc2 (ma) i cc1 (ma) i cc1 (ma) 100khz ~ 10kh z ~ 1mhz ~ ~ 500kh z ta ( c) 1.0 0.5 v cc =1.8 v 0 -40 0 85 i cc2 (ma) 1.0 0.5 0 23456 7 ta=25 c v cc (v) i cc2 (ma) 10 -6 10 -7 10 -8 10 -9 10 -10 v cc =3.3 v 10 -11 ta ( c) -40 0 85 i sb (a) 1.1 current consumption (read) i cc1 ambient temperature ta 1.3 current consumption (read) i cc1 power suppl y volta g e v cc 1.2 current consumption (read) i cc1 ambient temperature ta 1.4 current consumption (read) i cc1 power suppl y volta g e v cc 1.5 current consumption (program) i cc2 ambient temperature ta 1.6 current consumption (program) i cc2 ambient temperature ta 1.7 current consumption (program) i cc2 power suppl y volta g e v cc 1.8 standby current consumption i sb ambient temperature ta
cmos serial e 2 prom s-29uxx0a series 12 seiko instruments inc. ta ( c) 1.0 0.5 v cc =3.3 v do=0 v 0 -40 0 85 i lo ( a) ta ( c) 1.0 0.5 v cc =3.3 v do=3.3 v 0 -40 0 85 i lo ( a) ta ( c) 1.0 0.5 0 -40 0 85 v cc =3.3 v cs, sk, di, test=3.3 v i li ( a) ta ( c) 1.0 0.5 v cc =3.3 v cs, sk, di, test=0 v 0 -40 0 85 i li ( a) ta ( c) 2.7 2.6 v cc =2.7 v i oh =-100 a -40 0 85 v oh (v) 2.5 ta ( c) 2.5 2.4 v cc =2.5 v i oh =-100 a -40 0 85 v oh (v) 2.3 ta ( c) 1.0 0.9 v cc =0.9 v i oh =-5 a -40 0 85 v oh (v) 0.8 ta ( c) 0.03 0.02 v cc =1.8 v i ol =100 a -40 0 85 v ol (v) 0.01 1.9 input leakage current i li ambient temperature ta 1.10 input leakage current i li ambient temperature ta 1.11 output leakage current i lo ambient temperature ta 1.12 output leakage current i lo ambient temperature ta 1.13 high level output voltage v oh ambient temperature ta 1.14 high level output voltage v oh ambient temperature ta 1.15 high level output voltage v oh ambient temperature ta 1.16 low level output voltage v ol ambient temperature ta
cmos serial e 2 prom s-29uxx0a series seiko instruments inc. 13 ta ( c) 0.03 0.02 v cc =0.9 v i ol =10 a -40 0 85 v ol (v) 0.01 ta ( c) -4 -2 v cc =2.7 v v oh =2.0 v 0 -40 0 85 i oh (ma) ta ( c) -4 -2 v cc =2.5 v v oh =1.8 v 0 -40 0 85 i oh (ma) ta ( c) -80 -40 v cc =0.9 v v oh =0.7 v 0 -40 0 85 i oh ( a) ta ( c) 1.0 0.5 v cc =1.8 v v ol =0.1 v 0 -40 0 85 i ol (ma) ta ( c) 0.4 0.2 v cc =0.9 v v ol =0.2 v 0 -40 0 85 i ol (ma) ta ( c) 3.0 2.0 v cc =3.3 v cs, sk, di 0 -40 0 85 3.0 1.5 0 123456 ta=25 c cs, sk, di v cc (v) v inv (v) 7 v inv (v) 1.17 low level output voltage v ol ambient temperature ta 1.18 high level output current i oh ambient temperature ta 1.19 high level output current i oh ambient temperature ta 1.20 high level output current i oh ambient temperature ta 1.21 low level output current i ol ambient temperature ta 1.22 low level output current i ol ambient temperature ta 1.23 input voltage v in (v il , v ih ) power supply voltage v cc 1.24 input voltage v in (v il , v ih ) ambient temperature ta
cmos serial e 2 prom s-29uxx0a series 14 seiko instruments inc. 2. ac characteristics 10k 234 5 ta=25 c v cc (v) f max (hz) 1 4 2 234567 ta=25 c v cc (v) t pr (ms) 1 100k 1m 2m ta ( c) 6 4 v cc =3.0 v -40 0 85 2 t pr (ms) ta ( c) 6 4 v cc =1.8 v -40 0 85 2 t pr (ms) ta ( c) 0.6 0.4 v cc =2.7 v -40 0 85 0.2 t pd ( s) ta ( c) 0.6 0.4 v cc =1.8 v -40 0 85 0.2 t pd ( s) ta ( c) 30 20 v cc =0.9 v -40 0 85 10 t pd ( s) 2.1 maximum operating frequency fmax power suppl y volta g e v cc 2.2 program time t pr power supply voltage v cc 2.3 program time t pr ambient temperature ta 2.4 program time t pr ambient temperature ta 2.5 data output delay time t pd ambient temperature ta 2.6 data output delay time t pd ambient temperature ta 2.7 data output delay time t pd ambient temperature ta

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