LY62W25616 Rev. 1.4 256K X 16 BIT LOW POWER CMOS SRAM REVISION HISTORY Revision Description Issue Date Rev. 1.0 Initial Issue Mar.21.2008 Rev. 1.1 May.7.2010 FEATURES ORDERING INFORMATION Revised & Lead free and green package available to Green package available Added packing type in ORDERING INFORMATION Deleted T in ABSOLUTE MAXIMUN RATINGS SOLDER Revised PACKAGE OUTLINE DIMENSION in page 10 Revised V to 0.7*Vcc IH Revised V to 1.5V DR Rev. 1.2 Aug.25.2010 Revised ORDERING INFORMATION in page 11 Added SL Grade Rev. 1.3 Aug.9.2011 Deleted E Grade Revised I /I SB1 DR Rev. 1.4 Revised Standby Power Supply Current in page 3 April.30.2012 Revised Data Retention Current in page 8 Lyontek Inc. reserves the rights to change the specifications and products without notice. 5F, No. 2, Industry E. Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan. TEL: 886-3-6668838 FAX: 886-3-6668836 0 LY62W25616 Rev. 1.4 256K X 16 BIT LOW POWER CMOS SRAM FEATURES GENERAL DESCRIPTION The LY62W25616 is a 4,194,304-bit low power Fast access time : 55/70ns CMOS static random access memory organized as Low power consumption: 262,144 words by 16 bits. It is fabricated using very Operating current : 30/20mA (TYP.) high performance, high reliability CMOS technology. Standby current : 4 A (TYP.) LL-version Its standby current is stable within the range of 3 A (TYP.) SL-version operating temperature. Single 2.7V ~ 5.5V power supply All outputs TTL compatible The LY62W25616 is well designed for low power Fully static operation application, and particularly well suited for battery Tri-state output back-up nonvolatile memory application. Data byte control : LB (DQ0 ~ DQ7) UB (DQ8 ~ DQ15) The LY62W25616 operates from a single power Data retention voltage : 1.5V (MIN.) supply of 2.7V ~ 5.5V and all inputs and outputs are Green package available fully TTL compatible Package : 44-pin 400 mil TSOP-II 48-ball 6mm x 8mm TFBGA PRODUCT FAMILY Power Dissipation Product Operating Vcc Range Speed Family Temperature Standby(ISB1,TYP.) Operating(Icc,TYP.) 0 ~ 70 LY62W25616 2.7 ~ 5.5V 55/70ns 4A(LL)/3A(SL) 30/20mA -40 ~ 85 LY62W25616(I) 2.7 ~ 5.5V 55/70ns 4A(LL)/3A(SL) 30/20mA FUNCTIONAL BLOCK DIAGRAM PIN DESCRIPTION SYMBOL DESCRIPTION A0 - A17 Address Inputs Vcc Vss DQ0 DQ15 Data Inputs/Outputs CE Chip Enable Input 256Kx16 A0-A17 DECODER MEMORY ARRAY WE Write Enable Input OE Output Enable Input LB Lower Byte Control UB Upper Byte Control VCC Power Supply V Ground SS DQ0-DQ7 Lower Byte I/O DATA COLUMN I/O CIRCUIT DQ8-DQ15 Upper Byte CE WE CONTROL OE CIRCUIT LB UB Lyontek Inc. reserves the rights to change the specifications and products without notice. 5F, No. 2, Industry E. Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan. TEL: 886-3-6668838 FAX: 886-3-6668836 1