參數(shù)資料
型號(hào)： IBM038329NP6B
廠商： IBM Microeletronics
英文描述： 256K x 32 Synchronous Graphics RAM(256K x 32 高性能8M位CMOS同步動(dòng)態(tài)RAM（帶內(nèi)置的圖形性能）)
中文描述： 256K × 32同步圖形RAM（256K × 32位高性能800萬的CMOS同步動(dòng)態(tài)隨機(jī)存儲(chǔ)器（帶內(nèi)置的圖形性能））
文件頁數(shù)： 26/66頁
文件大?。?/td> 952K
代理商： IBM038329NP6B
IBM038329NL6B
IBM038329NP6B
256K x 32 Synchronous Graphics RAM
IBM Corporation. All rights reserved.
Use is further subject to the provisions at the end of this document.
Page 26 of 66
03K4292.E35604
Revised 3/98
Timing Specifications
Symbol
Parameter
CAS
Latency
-6R7
-7R5
-10
Units
Min
-
Max
6.5
Min
-
Max
7
Min
-
Max
9
t
AC3
t
AC2
t
AH
t
AS
t
BPL
t
BWC
t
CH
t
CHI
t
CK3
t
CK2
t
CKH
t
CKS
t
CL
t
CS
t
DH
t
DS
t
HZ
t
LZ
t
MTC
t
OH
t
RAS
t
RC
t
RCD
t
REF
t
RP
t
RRD
t
SML
t
T
t
WR
t
XSR
Access time from CLK (positive edge)
for 30 pF load
3
ns
2
-
7.5
-
10
-
12
Address hold time
1.5
-
1.5
-
1.5
-
ns
Address setup time
2.0
-
2.5
-
2.5
-
ns
Block Write to Precharge delay
6.7
-
7.5
-
10
-
ns
Block Write cycle time
6.7
-
7.5
-
10
-
ns
CS, RAS, CAS, WE, DSF, DQM hold time
1.0
-
1.0
-
1.0
-
ns
CLK high level width
3.0
-
3
-
3.5
-
ns
System clock cycle time
3
6.7
-
7.5
-
10
-
ns
2
10
-
12
-
15
-
CKE hold time
1.0
-
1.0
-
1.0
-
ns
CKE setup time
2.0
-
2.5
-
2.5
-
ns
CLK low level width
2.5
-
3
-
3.5
-
ns
CS, RAS, CAS, WE, DSF, DQM setup time
2.0
-
2.5
-
2.5
-
ns
Date-in hold time
1.5
-
1.5
-
1.5
-
ns
Data-in setup time
2.0
-
2.5
-
2.5
-
ns
Data-out high impedance time
3.5
6.7
3.5
7.5
3.5
10
ns
Data-out low impedance time
3
-
3
-
3
-
ns
Load Mode Register command to command
1
-
1
-
1
-
t
CK
ns
Data-out hold time
3.5
-
3.5
-
3.5
-
Active to Precharge command period
40
120K
45
120K
60
120K
ns
Auto Refresh and Active to Active command period
60
-
67.5
-
90
-
ns
Active to Read, Write or Block Write delay
20
-
22.5
-
30
-
ns
Refresh Period (1024 cycles) for Non Self-Refresh parts
-
16
-
16
-
16
ms
Row Precharge time
20
-
22.5
-
30
-
ns
Active bank A to Active bank B command period
6.7
-
7.5
-
10
-
ns
Load Special Mode Register command to command
2
-
2
-
2
-
t
CK
ns
Transition time
1
30
1
30
1
30
Write recovery time
6.7
-
7.5
-
10
-
ns
Exit Self Refresh to Active command
100
-
100
-
100
-
ns
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