ROM4732 Datasheet | SMSC

ROM 4732 ILPC FAMILY 4096 X a-Bit Static Read-Only Memory 32KROM Features o 4096 x 8 Organization o All Inputs and Outputs TTL-patible o Fully Static (No Clocks, No Refresh) o Single +5v Power Supply o Maximum Access Time .. .450ns o Minimum Cycle Time .. .450ns o Typical Power Dissipation ... 580m W o Three-State Outputs for Wire-OR Expansion o Industry Standard 24 pin DIP Pin Out o Pin patible with TMS 4732, TMS 4700, TMS 2708 and Intel 2316E o Two programmable chip select inputs for Chip Select Flexibility o Automated Custom Programming-Formats Media o COPLAMOS® N-Channel MOS Technology PIN CONFIGURATION A7 1 A6 2 AS 3 A4 4 A3 5 A2 6 Al 7 A0 8 01 9 0210 0311 GND12 24 Vee 23A8 22A9 21 CS2or CS2 20 CSl or CSl 19 Al0 18 All 1708 1607 1506 1405 1304 PACKAGE: 24-pin D.I.P. GENERAL DESCRIPTION The ROM 4732 is a 32,768-bit read-only memory organized as 4096 words of 8-bit length. This makes the ROM 4732 ideal for microprocessor based systems. The device is fabricated using N-channel silicon-gate technology for high speed and simple interface with bipolar circuits. These controls are programmable, providing additional system decode flexibility allowing four 32K ROMs to be OR-tied without external decoding. The data is always available, it is not dependent on external CE clocking. All inputs can be driven directly by Series 74 TTL circuits without the use of any external pull-up resistor. Each output can drive one Series 74 or 74S load without external resistors. The data outputs are three-state for OR-tieing multiple devices on a mon bus, facilitating easy memory expansion. Two chip select controls allow data to be read. The ROM 4732 is designed for high-density fixedmemory applications such as logic function generation and microprogramming. Systems utilizing 1024 x 8-bit ROMs or 1024 x8-bit EPROMs can expand to the 4096 x 8-bit ROM 4732 with changes only to pins 18, 19, and 21. To upgradefrom the 2316E, simply replace CS2 with A11 on pin 18. BLOCK...