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參數(shù)資料
| 型號(hào)： | HN58C256AI |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | 32768-word ×8-bit Electrically Erasable and Programmable CMOS ROM(256k EEPROM (32k字 ×8位)) |
| 中文描述： | 32768字× 8位電可擦除和可編程的CMOS光盤(pán)（256k的EEPROM（32K的字× 8位）） |
| 文件頁(yè)數(shù)： | 15/19頁(yè) |
| 文件大?。?/td> | 141K |
| 代理商： | HN58C256AI |
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HN58C256AI Series
15
(1)
Protection by
CE
,
OE
,
WE
To realize the unprogrammable state, the input level of control pins must be held as shown in the table
below.
CE
OE
WE
×
: Don’t care.
V
CC
: Pull-up to V
CC
level.
V
SS
: Pull-down to V
SS
level.
V
CC
×
×
×
×
×
V
SS
×
V
CC
3. Software data protection
To prevent unintentional programming, this device has the software data protection (SDP) mode. The SDP
is enabled by inputting the following 3 bytes code and write data. SDP is not enabled if only the 3 bytes
code is input. To program data in the SDP enable mode, 3 bytes code must be input before write data.
Data
AA
↓
55
↓
A0
↓
Write data }
Address
5555
↓
2AAA
↓
5555
↓
Write address
Normal data input
The SDP mode is disabled by inputting the following 6 bytes code. Note that, if data is input in the SDP
disable cycle, data can not be written.
Data
AA
↓
55
↓
80
↓
AA
↓
55
↓
20
Address
5555
↓
2AAA
↓
5555
↓
5555
↓
2AAA
↓
5555
The software data protection is not enabled at the shipment.
Note:
There are some differences between Hitachi’s and other company’s for enable/disable sequence of
software data protection. If there are any questions , please contact with Hitachi sales offices.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| HN58C256AP-10 | 256k EEPROM (32-kword x 8-bit) Ready/Busy and RES function (HN58C257A) |
| HN58C257AT-10 | 256k EEPROM (32-kword x 8-bit) Ready/Busy and RES function (HN58C257A) |
| HN58C256A | 256k EEPROM (32-kword x 8-bit) Ready/Busy and RES function (HN58C257A) |
| HN58C256AFP-10 | 256k EEPROM (32-kword x 8-bit) Ready/Busy and RES function (HN58C257A) |
| HN58C256AFP-85 | 256k EEPROM (32-kword x 8-bit) Ready/Busy and RES function (HN58C257A) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HN58C256AISERIES | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:x8 EEPROM |
| HN58C256AP10 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:IC-256K CMOS EEPROM |
| HN58C256AP-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) |
| HN58C256AP85 | 制造商:Renesas Electronics Corporation 功能描述:EEPROM PARALLEL 256K 58C256 DIP28 |
| HN58C256AP-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) |
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