tmp89fm42a TOSHIBA Semiconductor CORPORATION, tmp89fm42a Datasheet - Page 373

• Manufacturer Part Number: tmp89fm42a
• Description: 8 Bit Microcontroller
• Manufacturer: TOSHIBA Semiconductor CORPORATION

22.8
Operation Commands
RA003
22.8.1.1
specifically, ERASEC is used to specify the address of an area to be erased.
Executing Sector Erase with 0xFFFA memory set to "0xFF" or with the security program enabled will cause
the device to go into an infinite loop state.
security program in flash memory is disabled. Therefore, to disable the security program in flash memory,
execute Chip Erase, not Sector Erase.
The flash memory erase command is used to specify an area in flash memory to be erased at n-th-2 byte;
If data of less than 0x20 is specified, Sector Erase (erasing flash memory in 4K-byte units) is executed.
If data of more than 0x20 is specified, Chip Erase (total erasure of flash memory) is executed, and the
Specifying the erase area
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