Long-term Support World Class Quality IS61C64AL 8K x 8 HIGH-SPEED CMOS STATIC RAM JANUARY 2020 FEATURES DESCRIPTION The ISSI IS61C64AL is a very high-speed, low power, High-speed access time: 10 ns 8192-word by 8-bit static RAM. It is fabricated using ISSI s CMOS low power operation high-performance CMOS technology. This highly reliable 1 mW (typical) CMOS standby process coupled with innovative circuit design techniques, yields access times as fast as 10 ns with low power 125 mW (typical) operating consumption. TTL compatible interface levels Single 5V power supply When CE is HIGH (deselected), the device assumes a standby mode at which the power dissipation can be Fully static operation: no clock or refresh reduced down to 150 W (typical) with CMOS input levels. required Lead-free available Easy memory expansion is provided by using one Chip Enable input, CE. The active LOW Write Enable (WE) controls both writing and reading of the memory. The IS61C64AL is packaged in the JEDEC standard 28- pin, 300-mil SOJ, and TSOP. FUNCTIONAL BLOCK DIAGRAM 8K x 8 A0-A12 DECODER MEMORY ARRAY VDD GND I/O COLUMN I/O I/O0-I/O7 DATA CIRCUIT CE CONTROL OE CIRCUIT WE Copyright 2006 Integrated Silicon Solution, Inc. All rights reserved. ISSI reserves the right to make changes to this specification and its products at any time without notice. ISSI assumes no liability arising out of the application or use of any information, products or services described herein. Customers are advised to obtain the latest version of this device specification before relying on any published information and before placing orders for products. Integrated Silicon Solution, Inc. 1-800-379-4774 1 Rev. B1 01/13/2020 Long-term Support World Class Quality IS61C64AL TRUTH TABLE Mode WWWEEE CCCEEE OOOEEE I/O Operation VDD Current WWEE CCEE OOEE Not Selected X H X High-Z ISB1, ISB2 (Power-down) Output Disabled H L H High-Z ICC Read H L L DOUT ICC Write L L X DIN ICC PIN CONFIGURATION PIN CONFIGURATION 28-Pin SOJ 28-Pin TSOP (Type 1) NC 1 28 VDD OE 22 21 A10 A12 2 27 WE A11 23 20 CE A7 3 26 NC A9 24 19 I/O7 A6 4 25 A8 A8 25 18 I/O6 A5 5 24 A9 NC 26 17 I/O5 A4 6 23 A11 WE 27 16 I/O4 A3 7 22 OE VDD 28 15 I/O3 21 A10 NC 1 14 GND A2 8 A12 2 13 I/O2 A1 9 20 CE A7 3 12 I/O1 A0 10 19 I/O7 A6 4 11 I/O0 I/O0 11 18 I/O6 A5 5 10 A0 I/O1 12 17 I/O5 A4 6 9 A1 I/O2 13 16 I/O4 A3 7 8 A2 GND 14 15 I/O3 PIN DESCRIPTIONS A0-A12 Address Inputs CE Chip Enable 1 Input OE Output Enable Input WE Write Enable Input I/O0-I/O7 Input/Output NC No Connect VDD Power GND Ground 2 Integrated Silicon Solution, Inc. 1-800-379-4774 Rev. B1 01/13/2020