WS57C43C

WS57C43C HIGH SPEED 4K x 8 CMOS PROM/RPROM KEY FEATURES Ultra-Fast Access Time — t ACC = 25 ns — t CS = 12 ns Pin Compatible with 4K x 8 Bipolar PROMs Immune to Latch-UP — Up to 200 mA Low Power Consumption Fast Programming ESD Protection Exceeds 2000 V Available in 300 Mil DIP and PLDCC 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. BLOCK DIAGRAM EPROM ARRAY PIN CONFIGURATION TOP VIEW 7 A5 - A11 ROW ADDRESSES ROW DECODER Chip Carrier 32,768 BITS CERDIP/Plastic DIP NC A5 A 6 A 7 5 A0 - A4 COLUMN ADDRESSES VCC A8 A9 COLUMN DECODER SENSE AMPLIFIERS A4 A3 A2 A1 A0 NC O0 CS1/ VPP 4 3 2 28 27 26 1 5 25 6 24 7 23 8 22 9 21 10 20 11 19 12 ...