IS46DR16640BL - ISSI

IS46DR16640BL 1Gb DDR2 SDRAM

DDR2 SDRAM (128Mx8) TW-BGA Ball-out (Top-View) (8.00mm x 10.50mm) Symbol CK, CK# CKE CS# RAS#,CAS#,WE# A[13:0] BA[2:0] DQ[7:0] DQS, DQS# RDQS, RDQS# DM VDD VSS VDDQ VSSQ VREF VDDL VSSDL ODT NC Description Input clocks Clock enable Chip Select Command control pins Address Bank Address I/O Data Strobe Redundant Data Strobe Input data mask Supply voltage Grou.

Features

 Clock frequency up to 400MHz
 8 internal banks for concurrent operation
 4-bit prefetch architecture
 Programmable CAS Latency: 3, 4, 5, 6 and 7
 Programmable Additive Latency: 0, 1, 2, 3, 4, 5 and 6
 Write Latency = Read Latency-1
 Programmable Burst Sequence: Sequential or Interleave
 Programmable Burst Length: 4 and 8
 Automatic and Controlled Precharge Command
 Power Down Mode
 Auto Refresh and Self Refresh
 Refresh Interval: 7.8 s (8192 cycles/64 ms)
 ODT (On-Die Termination)
 Weak Strength Data-Output Driver Option
 Bidirectional differential Data Strobe (Single- ended d.