MCM6729D

MOTOROLA SEMICONDUCTOR TECHNICAL DATA Order this document by MCM6729D/D 256K x 4 Bit Fast Static Random Access Memory The MCM6729D is a 1,048,576 bit static random access memory organized as 262,144 words of 4 bits. Static design eliminates the need for external clocks or timing strobes. Output enable (G) is a special control feature that provides increased system flexibility and eliminates bus contention problems. This device meets JEDEC standards for functionality and revolutionary pinout, and is available in a 400 mil plastic small–outline J–leaded package. Single 5 V ± 10% Power Supply Fully Static — No Clock or Timing Strobes Necessary All Inputs and Outputs Are TTL Compatible Three State Outputs Fast Access Times: 8, 10, 12 ns Center Power and I/O Pins for Reduced Noise MCM6729D WJ PACKAGE 400 MIL SOJ CASE 857A–02 PIN ASSIGNMENT NC A A A A 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 A A A A A G DQ VSS VCC DQ A A A A A NC BLOCK DIAGRAM A A A A A A A A A DQ INPUT DATA CONTROL DQ A A COLUMN I/O COLUMN DECODER ROW DECODER MEMORY MATRIX 512 ROWS x 512 x 4 COLUMNS VCC VSS E DQ VCC VSS DQ W A A A A NC PIN NAMES A . . . . . . . . . . . . . . . . . . . . . Address Input E . . . . . . . . . . . . . . . . . . . . . . Chip Enable W . . . . . . . . . . . . . . . . . . . . Write Enable G . . . . . . . . . . . . . . . . . . . Output Enable DQ . . . . . . . . . . . . . . . Data Input/Output VCC . . . . . . . . . . . . + 5 ...