參數(shù)資料
型號: KM4132G271A-12
廠商: SAMSUNG SEMICONDUCTOR CO. LTD.
英文描述: 128K x 32Bit x 2 Banks Synchronous Graphic RAM
中文描述: 128K的x 32Bit的× 2銀行同步圖形內(nèi)存
文件頁數(shù): 9/48頁
文件大小: 1000K
代理商: KM4132G271A-12
KM4132G271A
CMOS SGRAM
Rev.0 (August 1997)
SIMPLIFIED TRUTH TABLE
(V=Valid, X=Don't Care, H=Logic High, L=Logic Low)
COMMAND
CKEn-1
CKEn
CS
RAS
CAS
WE
DSF
DQM
A
9
A
8
A
7
~ A
0
Note
Register
Mode Register Set
H
X
L
L
L
L
L
X
OP CODE
1, 2
Special Mode Register Set
H
1,2,7
Refresh
Auto Refresh
H
H
L
L
L
H
L
X
X
3
Self
Refresh
Entry
L
3
Exit
L
H
L
H
H
H
X
X
X
3
H
X
X
X
3
Bank Active
& Row Addr.
Write Per Bit Disable
H
X
L
L
H
H
L
X
V
Row Address
4, 5
Write Per Bit Enable
H
4,5,9
Read &
Column Address
Auto Precharge Disable
H
X
L
H
L
H
L
X
V
L
Column
Address
4
Auto Precharge Enable
H
4, 6
Write &
Column Address
Auto Precharge Disable
H
X
L
H
L
L
L
X
V
L
Column
Address
4, 5
Auto Precharge Enable
H
4,5,6,9
Block Write &
Column Addr.
Auto Precharge Disable
H
X
L
H
L
L
H
X
V
L
Column
Address
4, 5
Auto Precharge Enable
H
4,5,6,9
Burst Stop
H
X
L
H
H
L
L
X
X
7
Precharge
Bank Selection
H
X
L
L
H
L
L
X
V
L
X
Both Banks
X
H
Clock Suspend or
Active Power Down
Entry
H
L
L
H
H
H
X
X
X
H
X
X
X
Exit
L
H
X
X
X
X
X
X
Precharge Power Down Mode
Entry
H
L
L
H
H
H
X
X
X
H
X
X
X
Exit
L
H
L
V
V
V
V
X
H
X
X
X
X
DQM
H
X
V
X
8
No Operation Command
H
X
L
H
H
H
X
X
X
H
X
X
X
1. OP Code : Operand Code
A
0
~ A
9
: Program keys. (@MRS)
A
5
, A
6
: LMR or LCR select. (@SMRS)
Color register exists only one per DQi which both banks share.
So dose Mask Register.
Color or mask is loaded into chip through DQ pin.
2. MRS can be issued only at both banks precharge state.
SMRS can be issued only if DQ's are idle.
A new command can be issued at the next clock of MRS/SMRS.
Note :
相關(guān)PDF資料
PDF描述
KM4132G271A-8 128K x 32Bit x 2 Banks Synchronous Graphic RAM
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KM4132G271A-8 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:128K x 32Bit x 2 Banks Synchronous Graphic RAM
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KM4132G271B 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:128K x 32bit x 2 Banks Synchronous Graphic RAM LVTTL
KM4132G271BQ(R)-10 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:128K x 32bit x 2 Banks Synchronous Graphic RAM LVTTL
KM4132G271BQ(R)-7 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:128K x 32bit x 2 Banks Synchronous Graphic RAM LVTTL