WS57C43C MILITARY HIGH SPED 4K x 8 CMOS PROM/RPROM KEY FEATURES • Ultra-Fast Access Time • Pin Compatible with 4K x 8 Bipolar PROMs • Immune to Latch-UP — t ACC = 35 ns — t CS = 20 ns — Up to 200 mA • Low Power Consumption • Fast Programming • DESC SMD No. 5962-906580 • ESD Protection Exceeds 2000 V • Available in 300 Mil DIP and CLLCC GENERAL DESCRIPTION The WS57C43C is a High Performance 32K UV Erasable Electrically Re-Programmable Read Only Memory (RPROM). It is manufactured in an advanced CMOS technology which enables it to operate at Bipolar PROM speeds while consuming only 25% of the power required by its Bipolar counterparts. A further advantage of the WS57C43C over Bipolar PROM devices is the fact that it utilizes a proven EPROM technology. This enables the entire memory array to be tested for switching characteristics and functionality after assembly. Unlike devices which cannot be erased, every WS5743C in a windowed package is 100% tested with worst case test patterns both before and after assembly. The WS57C43C is configured in the standard Bipolar PROM pinout which provides an easy upgrade path for systems which are currently using Bipolar PROMs, or its predecessor, the WS57C43B. MODE SELECTION PINS PIN CONFIGURATION CS1 VPP CS2 VCC OUTPUTS MODE Read VIL VIH VCC DOUT Output Disable VIH X VCC High Z Output Disable X VIL VCC High Z Program VPP X VCC DIN Program Verify VIL VIH VCC DOUT TOP VIEW Chip Carrier CERDIP NC A5 A 6 A 7 A4 A3 A2 A1 A0 NC O0 VCC A8 A9 4 3 2 28 27 26 1 5 25 6 24 7 23 8 22 9 21 10 20 11 19 12 13 14 15 16 17 18 O1 O2 NC O3 O4 O5 A7 A6 A5 A10 A4 CS1/VPP A3 A11 A2 CS2 A1 NC A0 O7 O0 O6 O1 O2 GND 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 VCC A8 A9 A10 CS1/VPP A11 CS2 O7 O6 O5 O4 O3 GND PRODUCT SELECTION GUIDE PARAMETER WS57C43C-35 WS57C43C-45 WS57C43C-55 WS57C43C-70 Address Access Time (Max) 35 ns 45 ns 55 ns 70 ns CS to Output Valid Time (Max) 20 ns 25 ns 25 ns 25 ns Return to Main Menu 4-7 WS57C43C ORDERING INFORMATION PART NUMBER SPEED (ns) PACKAGE TYPE PACKAGE DRAWING OPERATING TEMPERATURE RANGE WSI MANUFACTURING PROCEDURE WS57C43C-35CMB* WS57C43C-35TMB* WS57C43C-45TMB* WS57C43C-55TMB* 35 35 45 55 28 Pad CLLCC 24 Pin CERDIP, 0.3" 24 Pin CERDIP, 0.3" 24 Pin CERDIP, 0.3" C1 T1 T1 T1 Military Military Military Military MIL-STD-883C MIL-STD-883C MIL-STD-883C MIL-STD-883C NOTE: The actual part marking will not include the initials "WS." *SMD product. See page 5-1 for DESC SMD numbers. PROGRAMMING/ALGORITHMS/ERASURE/PROGRAMMERS REFER TO PAGE 5-1 The WS57C43C is programmed using Algorithm D shown on page 5-9. For complete data sheet and electrical specifications see page 2-31. Return to Main Menu 4-8