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參數(shù)資料
| 型號： | HN58C257A |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | 256 k EEPROM (32-kword ×8-bit)(256k EEPROM (32k字 ×8位)) |
| 中文描述： | 256畝的EEPROM（32 KWord的× 8位）（256k的EEPROM（32K的字× 8位）） |
| 文件頁數(shù)： | 7/26頁 |
| 文件大?。?/td> | 193K |
| 代理商： | HN58C257A |
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HN58C256A Series, HN58C257A Series
7
Write Cycle
Parameter
Symbol
Min*
3
Typ
Max
Unit
Test conditions
Address setup time
t
AS
t
AH
t
CS
t
CH
t
WS
t
WH
t
OES
t
OEH
t
DS
t
DH
t
WP
t
CW
t
DL
t
BLC
t
BL
t
WC
t
DB
t
DW
t
RP
t
RES
0
—
—
ns
Address hold time
CE
to write setup time (
WE
controlled)
CE
hold time (
WE
controlled)
WE
to write setup time (
CE
controlled)
WE
hold time (
CE
controlled)
OE
to write setup time
OE
hold time
50
—
—
ns
0
—
—
ns
0
—
—
ns
0
—
—
ns
0
—
—
ns
0
—
—
ns
0
—
—
ns
Data setup time
50
—
—
ns
Data hold time
WE
pulse width (
WE
controlled)
CE
pulse width (
CE
controlled)
0
—
—
ns
100
—
—
ns
100
—
—
ns
Data latch time
50
—
—
ns
Byte load cycle
0.2
—
30
μ
s
μ
s
Byte load window
100
—
—
Write cycle time
—
—
10*
4
ms
120
—
—
ns
Write start time
0*
5
—
—
ns
Reset protect time*
2
100
—
—
μ
s
μ
s
Reset high time*
2, 6
Notes: 1. t
and t
are defined as the time at which the outputs achieve the open circuit conditions and
are no longer driven.
2. This function is supported by only the HN58C257A series.
3. Use this device in longer cycle than this value.
4. t
must be longer than this value unless polling techniques or RDY/
Busy
(only the HN58C257A
series) are used. This device automatically completes the internal write operation within this
value.
5. Next read or write operation can be initiated after t
DW
if polling techniques or RDY/
Busy
(only the
HN58C257A series) are used.
6. This parameter is sampled and not 100% tested.
7. A6 through A14 are page address and these addresses are latched at the first falling edge of
WE
.
8. A6 through A14 are page address and these addresses are latched at the first falling edge of
CE
.
9. See AC read characteristics.
1
—
—
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HN58C257ASERIES | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:x8 EEPROM |
| HN58C257AT-10 | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:256k EEPROM (32-kword x 8-bit) Ready/Busy and RES function (HN58C257A) |
| HN58C257AT10E | 制造商:Renesas Electronics 功能描述:Tray 制造商:Renesas Electronics Corporation 功能描述:EEPROM,Parallel,256K,5.0V,100ns,TSOP32 制造商:Renesas 功能描述:EEPROM Parallel 256K-bit 32K x 8 5V 32-Pin TSOP Tray |
| HN58C257AT-85 | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:256k EEPROM (32-kword x 8-bit) Ready/Busy and RES function (HN58C257A) |
| HN58C257AT85E | 制造商:Renesas Electronics 功能描述:Tray 制造商:Renesas Electronics Corporation 功能描述:EEPROM,Parallel,256K,5.0V,85ns,TSOP32 制造商:Renesas 功能描述:EEPROM Parallel 256K-bit 32K x 8 5V 32-Pin TSOP Tray |
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