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參數(shù)資料
| 型號(hào)： | UPD43257BCZ-85LL |
| 廠商： | NEC Corp. |
| 英文描述： | 256K-BIT CMOS STATIC RAM 32K-WORD BY 8-BIT |
| 中文描述： | 256K位CMOS靜態(tài)RAM 32K的詞8位 |
| 文件頁數(shù)： | 10/20頁 |
| 文件大小： | 157K |
| 代理商： | UPD43257BCZ-85LL |
Data Sheet M10693EJ7V0DS00
10
μ
PD43257B
Write Cycle
Parameter
Symbol
μ
PD43257B-70
μ
PD43257B-85
Unit
Condition
MIN.
MAX.
MIN.
MAX.
Write cycle time
t
WC
70
85
ns
/CE1 to end of write
t
CW1
50
70
ns
CE2 to end of write
t
CW2
50
70
ns
Address valid to end of write
t
AW
50
70
ns
Address setup time
t
AS
0
0
ns
Write pulse width
t
WP
55
65
ns
Write recovery time
t
WR
0
0
ns
Data valid to end of write
t
DW
30
35
ns
Data hold time
t
DH
0
0
ns
/WE to output in high impedance
t
WHZ
30
30
ns
Note
Output active from end of write
t
OW
10
10
ns
Note
See the output load shown in
Figure 2
.
Remark
These AC characteristics are in common regardless of package types and L, LL versions.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| UPD43257BGU-70L | 256K-BIT CMOS STATIC RAM 32K-WORD BY 8-BIT |
| UPD43257BGU-70LL | 256K-BIT CMOS STATIC RAM 32K-WORD BY 8-BIT |
| UPD43257BGU-85L | 256K-BIT CMOS STATIC RAM 32K-WORD BY 8-BIT |
| UPD43257BGU-85LL | 256K-BIT CMOS STATIC RAM 32K-WORD BY 8-BIT |
| UPD43257BCZ-70L | 256K-BIT CMOS STATIC RAM 32K-WORD BY 8-BIT |
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