參數(shù)資料
型號: UD61464DC07
英文描述: AC LINE SWITCH
中文描述: x4快速頁面模式的DRAM
文件頁數(shù): 6/14頁
文件大?。?/td> 175K
代理商: UD61464DC07
December 12, 1997
6
UD61464
p
WRITE
Random Write Cycle Time
7)
t
RC
t
cW
130
150
ns
RAS Pulse Width
CAS Pulse Width
Write Command Pulse Width
t
RAS
t
CAS
t
WP
t
w(RASL)
t
w(CASL)
t
w(W)
70
20
15
80
20
15
10000
10000
10000
10000
ns
ns
ns
Write Command Set-up Time
Data Set-up Time ref. to CAS
Data Set-up Time ref. to W
14)
12)
12)
t
WCS
t
DS
t
DS
t
su(W-CAS)
t
su(D-CAS)
t
su(D-W)
0
0
0
0
0
0
ns
ns
ns
Write Command Hold Time
Write Command to RAS Lead Time
Write Command to CAS Lead Time
Data Hold Time ref. to CAS
Data Hold Time ref. to W
G Command Hold Time
12)
t
WCH
t
RWL
t
CWL
t
DH
t
DH
t
OEH
t
h(CAS-W)
t
h(W-RAS)
t
h(W-CAS)
t
h(CAS-D)
h(W-D)
t
h(W-GL)
15
20
20
15
15
20
15
20
20
15
15
20
ns
ns
ns
ns
ns
ns
RAS to CAS Delay Time
CAS Hold Time
RAS Hold Time
6)
t
RCD
t
CSH
t
RSH
t
RASL-CASL
t
RASL-CASH
t
CASL-RASH
20
70
20
20
80
20
50
60
ns
ns
ns
p
READ-WRITE
Read-Write Cycle Time
7)
t
RWC
t
cRW
185
205
ns
RAS Pulse Width
CAS Pulse Width
t
RAS
t
CAS
t
w(RASL)RW
t
w(CASL)RW
125
75
135
75
10000
10000
10000
10000
ns
ns
CAS Hold Time
RAS to WRITE Delay Time
CAS to WRITE Delay Time
Column to WRITE Delay Time
14)
14)
14)
t
CSH
t
RWD
t
CWD
t
AWD
t
(RASL-
CASH)RW
t
RAS-W
t
CAS-W
t
(CA-W)RW
125
100
50
65
135
110
50
70
ns
ns
ns
ns
p
FPM Read
Fast Page Mode Cycle Time
RAS Pulse Width
t
PC
t
RASP
t
cPG
t
w(RASL)
50
70
50
80
100000
100000
ns
ns
Access Time from CAS Precharge
t
CPA
t
a(CASH)
35
40
ns
p
FPM Write
Fast Page Mode Cycle Time
t
PC
t
cPG
50
50
ns
Remarks: see page 7
Dynamic Characteristics
3)
Symbol
Min.
Max.
Unit
Alt.
IEC
DC07
DC08
DC07
DC08
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