器件名称:
EM488M1644VTB-75FL
功能描述:
128Mb (2Mx4Bankx16) Synchronous DRAM
文件大小:
1144.93KB 共18页
简 介:
____________________________________________ EM488M1644VTB 128Mb (2Mx4Bankx16) Synchronous DRAM Feature Fully synchronous to positive clock edge Single 3.3V +/- 0.3V power supply LVTTL compatible with multiplexed address Programmable Burst Length (B/ L) - 1,2,4, 8 or full page Programmable CAS Latency (C/ L) - 2 or 3 Data Mask (DQM) for Read / Write masking Programmable wrap sequence – Sequential (B/ L = 1/2/4/8/full page ) – Interleave (B/ L = 1/2/4/8 ) Burst read with single-bit write operation All inputs are sampled at the rising edge of the system clock. Auto refresh and self refresh 4,096 refresh cycles / 64ms (15.625us) Description The EM488M1644VTB is Synchronous Dynamic Random Access Memory (SDRAM) organized as 2Meg words x 4 banks x 16 bits.All inputs and outputs are synchronized with the positive edge of the clock. The 128Mb SDRAM uses synchronized pipelined architecture to achieve high speed data transfer rates and is designed to operate at 3.3V low power memory system. It also provides auto refresh with power saving / down mode. All inputs and outputs voltage levels are compatible with LVTTL. Packages: TSOPII 54P 400mil Ordering Information Part No Organization Max. Freq EM488M1644VTB –75FL 8M X16 133MHz @CL3 EM488M1644VTB –7FL 8M X16 143MHz @CL3 Package 54pin TSOP (II) 54pin TSOP (II) Power Low power Low power Pb Free Free * EOREX reserves the right to change products or specification without notice. 1 ___________________________________________……
