PD46184182B_15 Datasheet, PDF (20/34 Pages) Renesas Technology Corp – 18M-BIT DDR II SRAM 2-WORD BURST OPERATION

μPD46184182B, μPD46184362B
Application Example
SRAM
Vt
Controller
R
Data IO
ZQ
CQ#
SRAM#1
CQ
DQ
A LD# R, W# BWx# C/C# K/K#
Address
LD#
R, W#
BW#
SRAM#1 CQ/CQ#
SRAM#4 CQ/CQ#
Source CLK/CLK#
Return CLK/CLK#
Vt
R
Vt
R
Vt
R
R = 50 Ω Vt = Vref
R=
250 Ω
...
ZQ
CQ#
SRAM#4
CQ
DQ
A LD# R, W# BWx# C/C# K/K#
Vt
R
R=
250 Ω
Remark AC Characteristics are defined at the condition of SRAM outputs, CQ, CQ# and DQ with termination.
R10DS0114EJ0200 Rev.2.00
Nov 09, 2012
Page 20 of 34