参数资料
型号: GLT5640L32-5.5
厂商: Electronic Theatre Controls, Inc.
英文描述: CMOS Synchronous DRAM 2M x 32 SDRAM
中文描述: 200万的CMOS同步DRAM × 32内存
文件页数: 10/72页
文件大小: 2315K
代理商: GLT5640L32-5.5
G-LINK
GLT5640AL16
4M X 16 CMOS Synchronous Dynamic RAM
Feb 2004 (Rev.0.1)
G-Link Technology Corporation, Taiwan
Web : www.glink.com.tw Email : sales@glink.com.tw
TEL : 886-2-27968078
- 10 -
2.Truth Table
2.1 Command Truth Table
CKE
FUNCTION
Symbol
n - 1
H
H
H
H
H
H
H
H
H
H
H
H
H
n
X
X
X
X
X
X
X
X
X
X
X
H
L
CS
RAS
CAS
WE
BA
A10
A11
A9 – A0
X
X
V
V
V
V
V
V
X
X
X
X
X
Device deselect
No operation
Mode register set
Bank activate
Read
Read with auto precharge
Write
Write with auto precharge
Precharge select bank
Precharge all banks
Burst stop
CBR (Auto) refresh
Self refresh
DESL
NOP
MRS
ACT
READ
READA
WRIT
WRITA
PRE
PALL
BST
REF
SELF
H
L
L
L
L
L
L
L
L
L
L
L
L
X
H
L
L
H
H
H
H
L
L
H
L
L
X
H
L
H
L
L
L
L
H
H
H
L
L
X
H
L
H
H
H
L
L
L
L
L
H
H
X
X
L
V
V
V
V
V
V
X
X
X
X
X
X
L
V
L
H
L
H
L
H
X
X
X
2.2 DQM Truth Table
CKE
FUNCTION
Symbol
n - 1
H
H
n
X
X
DQM
Data write/output enable
Data mask/output disable
ENB
MASK
L
H
2.3 CKE Truth Table
CKE
Current State
Function
Symbol
n - 1
H
L
L
H
H
L
L
H
L
n
L
L
H
H
L
H
H
L
H
CS
RAS
CAS
WE
Address
Activating
Any
Clock suspend
Idle
Idle
Self refresh
Clock suspend mode entry
Clock suspend
Clock suspend mode exit
CBR refresh command
Self refresh entry
Self refresh exit
X
X
X
L
L
L
H
X
X
X
X
X
L
L
H
X
X
X
X
X
X
L
L
H
X
X
X
X
X
X
H
H
H
X
X
X
X
X
X
X
X
X
X
X
X
REF
SELF
Idle
Power down
Power down entry
Power down exit
H : High level, L : Low level
X : High or Low level (Don’t care), V : Valid Data input
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