IS61LV2568L-10TL-TR ISSI

IS61LV2568L APRIL 2008 256K x 8 HIGH-SPEED CMOS STATIC RAM DESCRIPTION FEATURES The ISSI IS61LV2568L is a very high-speed, low power, High-speed access time: 8, 10 ns 262,144-word by 8-bit CMOS static RAM. The IS61LV2568L Operating Current: 50mA (typ.) is fabricated using ISSI s high-performance CMOS tech- nology. This highly reliable process coupled with innova- Standby Current: 700A (typ.) tive circuit design techniques, yields higher performance Multiple center power and ground pins for and low power consumption devices. greater noise immunity When CE is HIGH (deselected), the device assumes a Easy memory expansion with CE and OE standby mode at which the power dissipation can be options reduced down to 36mW (max.) with CMOS input levels. CE power-down The IS61LV2568L operates from a single 3.3V power TTL compatible inputs and outputs supply and all inputs are TTL-compatible. Single 3.3V power supply The IS61LV2568L is available in 36-pin 400-mil SOJ and Packages available: 44-pin TSOP (Type II) packages. 36-pin 400-mil SOJ 44-pin TSOP (Type II) Lead-free available FUNCTIONAL BLOCK DIAGRAM 256K X 8 A0-A17 DECODER MEMORY ARRAY VDD GND I/O COLUMN I/O I/O0-I/O7 DATA CIRCUIT CE CONTROL OE CIRCUIT WE Copyright 2005 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. www.issi.com 1-800-379-4774 1 Rev. D 04/28/08IS61LV2568L PIN CONFIGURATION 44-Pin TSOP (Type II) 36-Pin SOJ A4 1 36 NC NC 1 44 NC A3 2 35 A5 NC 2 43 NC A2 3 34 A6 A4 3 42 NC A3 4 41 A5 A1 4 33 A7 A2 5 40 A6 A0 5 32 A8 A1 6 39 A7 CE 6 31 OE A0 7 38 A8 CE 8 37 OE I/O0 7 30 I/O7 I/O0 9 36 I/O7 I/O1 8 29 I/O6 I/O1 10 35 I/O6 VDD 9 28 GND VDD 11 34 GND GND 10 27 VDD GND 12 33 VDD I/O2 13 32 I/O5 I/O2 11 26 I/O5 I/O3 14 31 I/O4 I/O3 12 25 I/O4 WE 15 30 A9 WE 13 24 A9 A17 16 29 A10 A17 14 23 A10 A16 17 28 A11 A15 18 27 A12 A16 15 22 A11 A14 19 26 NC A15 16 21 A12 A13 20 25 NC A14 17 20 NC NC 21 24 NC NC 22 23 NC A13 18 19 NC PIN DESCRIPTIONS A0-A17 Address Inputs CE Chip Enable Input OE Output Enable Input WE Write Enable Input I/O0-I/O7 Bidirectional Ports VDD Power GND Ground NC No Connection 2 Integrated Silicon Solution, Inc. www.issi.com 1-800-379-4774 Rev. D 04/28/08