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参数资料
| 型号： | PUMA68E4001-20 |
| 元件分类： | PROM |
| 英文描述： | 128K X 32 EEPROM 5V MODULE, 200 ns, PQCC68 |
| 封装： | PLASTIC, LCC-68 |
| 文件页数： | 13/13页 |
| 文件大小： | 242K |
| 代理商： | PUMA68E4001-20 |
PUMA 68E4001/A-12/15/17/20
ISSUE 4.2 : November
1998
Notes:
(1) Data Format I/O7-I/O0 (Hex);
Once initiated, this sequence of write operations should not be interrupted.
(2) Enable Write Protect state will be initiated at end of write even if no other data is loaded.
(3) Disable Write Protect state will be initiated at end of write period even if no other data is loaded.
(4) 1 to 128 bytes of data may be loaded.
Software Algorithms
Selecting the software data protection mode requires the host system to precede datawrite operations by a series
of three write operations to three specfic addresses. The three byte sequence opens the page write window
enabling the host to write from from 1 to 128 bytes of data. Once the page load cycle has been completed, the device
will automatically be returned to the data protected state
Software Data Protection Algorithm
Regardless of wheather the device has been protected or not, once the software data protected aglorithm is used
and the data is written, the PUMA 68E4001 will automatically disable further writes unless another command is
issued to cancel it. If no further commands are issued the PUMA 68E4001 will be write protected during power-
down and any subsequent power-up.
LOAD DATA A0
TO
ADDRESS 5555
LOAD DATA 55
TO
ADDRESS 2AAA
LOAD DATA AA
TO
ADDRESS 5555
LAST BYTE / WORD
TO
LAST ADDRESS
LOAD DATA XX
TO
ANY ADDRESS (4)
WRITES
ENABLED (2)
ENTER DATA
PROTECT
STATE
相关PDF资料 |
PDF描述 |
|---|---|
| PUMA68F32006M-90E | 1M X 32 FLASH 5V PROM MODULE, 90 ns, PQMA68 |
| PUMA68F4001MB-15 | 128K X 32 FLASH 5V PROM MODULE, 150 ns, PQMA68 |
| PUMA68S16000XBL-012 | 512K X 32 MULTI DEVICE SRAM MODULE, 12 ns, PQCC68 |
| PUMA68SV16000B-020 | 512K X 32 MULTI DEVICE SRAM MODULE, 20 ns, PQMA68 |
| PUMA68SV16000B-35 | 512K X 32 MULTI DEVICE SRAM MODULE, 35 ns, PQMA68 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| PUMA68E4001-20E | 制造商:未知厂家 制造商全称:未知厂家 功能描述:x32 EEPROM Module |
| PUMA68E4001A-12 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:x32 EEPROM Module |
| PUMA68E4001A-12E | 制造商:未知厂家 制造商全称:未知厂家 功能描述:x32 EEPROM Module |
| PUMA68E4001A-15 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:EEPROM|128KX32|CMOS|LDCC|68PIN|PLASTIC |
| PUMA68E4001A-15E | 制造商:未知厂家 制造商全称:未知厂家 功能描述:x32 EEPROM Module |
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