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WS57C71C HIGH SPEED 32K x 8 CMOS PROM/RPROM
* Ultra-Fast Access Time
-- 35 ns
KEY FEATURES * Immune to Latch-UP
-- Up to 200 mA
* Low Power Consumption * Fast Programming
* ESD Protection Exceeds 2000V * Available in 300 Mil DIP and PLDCC
GENERAL DESCRIPTION
The WS57C71C is a High Performance 256K UV Erasable Electrically Re-Programmable Read Only Memory (RPROM). It is manufactured in an advanced CMOS technology and utilizes WSI's patented self-aligned split gate EPROM cell. The industry standard PROM pin configuration of the WS57C71C provides an easy upgrade path from a 16K x 8 device. This RPROM is capable of operating at speeds as fast as 35 ns address access time, which enables it to be used directly with today's fast microprocessors and DSP processors without introducing any wait states. All inputs and outputs are TTL compatible. The WS57C71C is a low power device even when operated at its fastest speed. The DIP version is packaged in a 300 mil wide DIP package saving board space for the user.
BLOCK DIAGRAM
PIN CONFIGURATION
TOP VIEW Chip Carrier CERDIP
A9 A8 A7 A6 A5 A4 A3 A2 A1 A0 O0 O1 O2 GND 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15 VCC A10 A11 A12 A13 A14 CS3 CS2 CS1/VPP O7 O6 O5 O4 O3
9 A6 - A14 ROW ADDRESSES
ROW DECODER
262,144 BITS
9 A0 - A5 COLUMN ADDRESSES
COLUMN DECODER
SENSE AMPLIFIERS
A6 A5 A4 A3 A2 A1 A0 NC O0
CS1/ VPP CS2 CS3 8
32 31 30 1 5 29 6 28 7 27 8 26 9 25 10 24 11 23 12 22 13 21 14 15 16 17 18 19 20 O1 O2
GND
A7 A8 A9 NC VCC A10 A11 432
EPROM ARRAY
A12 A13 A14 NC CS3 CS2 CS1/VPP O7 O6
NC O3 O4 O5
OUTPUTS
PRODUCT SELECTION GUIDE
PARAMETER Address Access Time (Max) CS to Output Valid Time (Max) WS57C71C-35 35 ns 15 ns WS57C71C-45 45 ns 20 ns WS57C71C-55 55 ns 20 ns WS57C71C-70 70 ns 30 ns
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WS57C71C
ABSOLUTE MAXIMUM RATINGS*
Storage Temperature............................-65 to + 150C Voltage on any Pin with Respect to Ground ....................................-0.6V to +7V VPP with Respect to Ground...................-0.6V to + 13V ESD Protection ..................................................>2000V
MODE SELECTION
PINS MODE Read CS1/ CS2 CS3 VCC OUTPUTS VPP VIL VIH X VIL X X VIH VIH VIL X X VIH VIH VIL VIL VCC VCC VCC VCC VCC VCC VCC DOUT High Z High Z High Z DIN DOUT DOUT
Output Disable VIH Output Disable Output Disable Program Program Verify X X VPP VIL
*NOTICE:
Stresses above 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 of time may affect device reliability.
Program Inhibit VPP
OPERATING RANGE
RANGE Commercial Industrial Military TEMPERATURE 0C to +70C -40C to +85C -55C to +125C VCC +5V 10% +5V 10% +5V 10%
DC READ CHARACTERISTICS Over Operating Range. (See Above)
SYMBOL VIL VIH VOL VOH PARAMETER Input Low Voltage Input High Voltage Output Low Voltage Output High Voltage VCC Active Current (CMOS) (Note 3) (Note 3) IOL = 16 mA IOH = -4 mA VCC = 5.5 V, f = 0 MHz (Note 1), Output Not Loaded Add 3 mA/MHz for AC Operation VCC = 5.5 V, f = 0 MHz (Note 2), Output Not Loaded Add 3 mA/MHz for AC Operation VIN = 5.5V or Gnd VOUT = 5.5 V or Gnd Comm'l Industrial Military Comm'l Industrial Military -10 -10 2.4 30 35 35 50 60 60 10 10 TEST CONDITIONS MIN -0.1 2.0 MAX 0.8 VCC + 0.3 0.4 UNITS V V V V mA mA mA mA mA mA A A
ICC1
ICC2
VCC Active Current (TTL) Input Leakage Current Output Leakage Current
ILI ILO
NOTES:
1. CMOS inputs: GND 0.3V or VCC 0.3V. 2. TTL inputs: VIL 0.8V, VIH 2.0V. 3. These are absolute voltages with respect to device ground pin and include all overshoots due to system and/or tester noise. Do not attempt to test these values without suitable equipment.
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WS57C71C
AC READ CHARACTERISTICS Over Operating Range. (See Above)
PARAMETER Address to Output Delay CS to Output Delay Output Disable to Output Float* Address to Output Hold SYMBOL tACC tCS tDF tOH 0 57C71C-35
MIN MAX
57C71C-45
MIN MAX
57C71C-55
MIN MAX
57C71C-70
MIN MAX
UNITS
35 15 20 0
45 20 20 0
55 20 20 0
70 30 25 ns
*Sampled, Not 100% Tested.
AC READ TIMING DIAGRAM
ADDRESSES
VALID tACC tOH
CSX, CS2 tCS OUTPUTS VALID tDF
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WS57C71C
CAPACITANCE (4) TA = 25C, f = 1 MHz
SYMBOL C IN C OUT C VPP PARAMETER Input Capacitance Output Capacitance VPP Capacitance CONDITIONS VIN = 0V VOUT = 0V VPP = 0 V TYP (5) 4 8 18 MAX 6 12 25 UNITS pF pF pF
NOTES: 4. This parameter is only sampled and is not 100% tested. 5.Typical values are for TA = 25C and nominal supply voltages.
TEST LOAD (High Impedance Test Systems)
A.C. TESTING INPUT/OUTPUT WAVEFORM
98 2.01 V D.U.T. 3.0 1.5 30 pF (INCLUDING SCOPE AND JIG CAPACITANCE) 0.0 TEST POINTS 1.5
A.C. testing inputs are driven at 3.0 V for a logic "1" and 0.0 V for a logic "0." Timing measurements are made at 1.5 V for input and output transitions in both directions. NOTE: 6. Provide adequate decoupling capacitance as close as possible to this device to achieve the published A.C. and D.C. parameters. A 0.1 microfarad capacitor in parallel with a 0.01 microfarad capacitor connected between VCC and ground is recommended. Inadequate decoupling may result in access time degradation or other transient performance failures.
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WS57C71C
NORMALIZED SUPPLY CURRENT vs. SUPPLY VOLTAGE
1.60 40.0 35.0 1.40 30.0 NORMALIZED I CC DELTA Taa (ns) 1.20 25.0 20.0 15.0 10.0 5.0 0.60 4.0 4.5 5.0 5.5 6.0 SUPPLY VOLTAGE ( V ) 0.0
TYPICAL ACCESS TIME CHANGE vs. OUTPUT LOADING
1.00
0.80
0.0
200
400
600
800
1000
CAPACITANCE ( pF )
NORMALIZED Taa vs. AMBIENT TEMPERATURE
1.6 1.2
NORMALIZED SUPPLY CURRENT vs. AMBIENT TEMPERATURE
1.4 1.1 NORMALIZED Taa 1.2 NORMALIZED I CC
1.0
1.0
0.9 0.8
0.6 -55 -35 -15 5 25 45 65 85 105 125 AMBIENT TEMPERATURE (C )
0.8 -55 -35 -15 5 25 45 65 85 105 125 AMBIENT TEMPERATURE (C)
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WS57C71C
PROGRAMMING INFORMATION DC CHARACTERISTICS (TA = 25 5C, VCC = 6.25 V 0.25 V, VPP = 12.75 0.25 V)
SYMBOLS ILI IPP ICC VOL VOH
NOTE:
PARAMETER Input Leakage Current (VIN = VCC or Gnd) VPP Supply Current During Programming Pulse VCC Supply Current Output Low Voltage During Verify (IOL = 16 mA) Output High Voltage During Verify (IOH = -4 mA)
MIN -10
MAX 10 60 25 0.45
UNITS A mA mA V V
2.4
7. VPP must not be greater than 13 volts including overshoot.
AC CHARACTERISTICS (TA = 25 5C, VCC = 6.25 V 0.25 V, VPP = 12.75 0.25 V)
SYMBOLS tAS tDF tDS tPW tDH tCS tRF PARAMETER Address Setup Time Chip Disable Setup Time Data Setup Time Program Pulse Width Data Hold Time Chip Select Delay VPP Rise and Fall Time 1 2 100 2 30 200 MIN 2 30 TYP MAX UNITS s ns s s s ns s
PROGRAMMING WAVEFORM
VIH ADDRESSES VIL VIH DATA IN VIL tDF VPP VIH CS1/VPP VIL VIH CS2 VIL VIH CS3 VIL DON'T CARE tRF tRF tDS tPW tDH tCS DATA OUT tAS ADDRESS STABLE
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WS57C71C
ORDERING INFORMATION
PART NUMBER WS57C71C-35J WS57C71C-35L WS57C71C-35T WS57C71C-45CI WS57C71C-45D WS57C71C-45J WS57C71C-45T WS57C71C-45TMB WS57C71C-55CMB WS57C71C-55D WS57C71C-55DMB WS57C71C-55J WS57C71C-55JI WS57C71C-55L WS57C71C-55T WS57C71C-55TI WS57C71C-55TMB WS57C71C-70L WS57C71C-70T WS57C71C-70TMB SPEED (ns) 35 35 35 45 45 45 45 45 55 55 55 55 55 55 55 55 55 70 70 70 PACKAGE TYPE 32 Pin PLDCC 32 Pin CLDCC 28 Pin CERDIP, 0.3" 32 Pad CLLCC 28 Pin CERDIP, 0.6" 32 Pin PLDCC 28 Pin CERDIP, 0.3" 28 Pin CERDIP, 0.3" 32 Pad CLLCC 28 Pin CERDIP, 0.6" 28 Pin CERDIP, 0.6" 32 Pin PLDCC 32 Pin PLDCC 32 Pin CLDCC 28 Pin CERDIP, 0.3" 28 Pin CERDIP, 0.3" 28 Pin CERDIP, 0.3" 32 Pin CLDCC 28 Pin CERDIP, 0.3" 28 Pin CERDIP, 0.3" WSI PACKAGE OPERATING TEMPERATURE MANUFACTURING DRAWING RANGE PROCEDURE J4 L3 T2 C2 D2 J4 T2 T2 C2 D2 D2 J4 J4 L3 T2 T2 T2 L3 T2 T2 Comm'l Comm'l Comm'l Industrial Comm'l Comm'l Comm'l Military Military Comm'l Military Comm'l Industrial Comm'l Comm'l Industrial Military Comm'l Comm'l Military Standard Standard Standard Standard Standard Standard Standard MIL-STD-883C MIL-STD-883C Standard MIL-STD-883C Standard Standard Standard Standard Standard MIL-STD-883C Standard Standard MIL-STD-883C
NOTE: 8. The actual part marking will not include the initials "WS."
PROGRAMMING/ALGORITHMS/ERASURE/PROGRAMMERS REFER TO PAGE 5-1
The WS57C71C is programmed using Algorithm D shown on page 5-9.
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