EDI8F32512C Datasheet | White Electronic Designs Corporation

FEATURES 512Kx32 bit CMOS Static Random Access Memory Access Times: 15, 20, and 25ns .. DESCRIPTION The EDI8F32512C is a high speed 16 megabit Static RAM module organized as 512K words by 32 bits. This module is constructed from four 512Kx8 Static RAMs in SOJ packages on an epoxy laminate (FR4) board. Four chip enables (EØ-E3) are used to independently enable the four bytes. Reading or writing can be executed on individual bytes or any bination of multiple bytes through proper use of selects. The EDI8F32512C is offered in 72 pin ZIP and 72 lead SIMM packages, which enable 16 megabits of memory to be placed in less than 1.3 square inches of board space. All inputs and outputs are TTL patible and operate from a single 5V supply. Fully asynchronous circuitry requires no clocks or refreshing for operation and provides equal access and cycle times for ease of use. Pins PD1- PD4, are used to identify module memory density in applications where alternate modules can be interchanged. Individual Byte Selects Fully Static, No Clocks TTL patible I/O High Density Package 72 Pin ZIP, No. 173 72 lead SIMM, No. 174 (Gold Option) mon Data Inputs and Outputs Single +5V (±10%) Supply Operation Note: Consult factory for availability of: - Ro HS pliant products - Vendor source control options - Industrial temperature option FIG. 1 Pin Configurations and Block Diagram NC PD3 PD0 DQ0 DQ1 DQ2 DQ3 VCC A7 A8 A9 DQ4 DQ5 DQ6 DQ7 W# A14 E0# E2# A16 VSS DQ16 DQ17 DQ18 DQ19 A10 A11 A12 A13 DQ20 DQ21 DQ22 DQ23 VSS NC NC 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41 43 45 47 49 51 53 55 57 59 61 63 65 67 69 71 NC PD2 VSS PD1 DQ8 DQ9 DQ10 DQ11 A0 A1 A2 DQ12 DQ13 DQ14 DQ15 VSS A15 E1# E3# A17 G# DQ24 DQ25 DQ26 DQ27 A3 A4 A5 VCC A6 DQ28 DQ29 DQ30 DQ31 A18 NC Pin Names A0-A18 E0#-E3# W# G# DQ0-DQ31 VCC VSS NC A0-A18 W# G# 512K X 8 E0# 512K X 8 E1# 512K X 8 E2# 512K X 8 E3# 8G32512C...