EM658160TS-35中文資料鈺創(chuàng)科技數(shù)據(jù)手冊(cè)PDF規(guī)格書

Overview

The EM658160 SDRAM is a high-speed CMOS double data rate synchronous DRAM containing 64 Mbits. It is internally configured as a quad 1M x 16 DRAM with a synchronous interface (all signals are registered on the positive edge of the clock signal, CK). Data outputs occur at both rising edges of CK and /CK. Read and write accesses to the SDRAM are burst oriented; accesses start at a selected location and continue for a programmed number of locations in a programmed sequence. Accesses begin with the registration of a BankActivate command which is then followed by a Read or Write command. The EM658160 provides programmable Read or Write burst lengths of 2, 4, 8, full page.

Features

? Fast clock rate: 300/285/250/200/166/143/125MHz

? Differential Clock CK & /CK

? Bi-directional DQS

? DLL enable/disable by EMRS

? Fully synchronous operation

? Internal pipeline architecture

? Four internal banks, 1M x 16-bit for each bank

? Programmable Mode and Extended Mode registers

- /CAS Latency: 2, 2.5, 3

- Burst length: 2, 4, 8

- Burst Type: Sequential & Interleaved

? Individual byte write mask control

? DM Write Latency = 0

? Auto Refresh and Self Refresh

? 4096 refresh cycles / 64ms

? Precharge & active power down

? Power supplies: VDD = 3.3V ± 0.3V

VDDQ = 2.5V ± 0.2V

? Interface: SSTL_2 I/O Interface

? Package: 66 Pin TSOP II, 0.65mm pin pitch