参数资料
型号: MC68HC705BS8FB
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, OTPROM, 2.2 MHz, MICROCONTROLLER, PQFP44
封装: PLASTIC, QFP-44
文件页数: 53/128页
文件大小: 9691K
代理商: MC68HC705BS8FB
4-4
MC68HC05BS8
MEMORY AND REGISTERS
4
4.5.4
Erase Procedure
There are three types of ERASE operation mode (see Table 4-1): byte erase, block erase, and
bulk erase.
1) To perform byte erase operation, set EELAT=1, EER1=0, and EER0=1, write
any data to the address to be erase, and set EEPGM for a time tEBYTE.
2) To perform block erase operation, set EELAT=1, EER1=1, and EER0=0,
write any data to any address in the block, and set EEPGM for a time
tEBLOCK.
3) To perform bulk erase operation, set EELAT=1, EER1=1, and EER0=0, write
any data to any address in the EEPROM map, and set EEPGM for a time
tEBULK.
Note:
Erase operation to any part of block 2 is not possible if the EEPRT bit is programmed
to “0”.
4.5.5
Programming Procedure
To program the content of EEPROM, set EELAT bits, write data to the desired address, and set
the EEPGM bit. After the required programming delay tPROG, EELAT must be cleared, which also
resets EEPGM. During a programming operation, any access to the EEPROM will return $FF. To
program a second byte, EELAT must be cleared before it is set, or the programming will have no
effect.
TPG
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For More Information On This Product,
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