tmp89fm42a TOSHIBA Semiconductor CORPORATION, tmp89fm42a Datasheet - Page 371

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

22.8
Operation Commands
RA003
5. Flash memory SUM output command
6. Product ID code output command
7. Flash memory status output command
8. Mask ROM emulation setting command
9. Flash memory security setting command
program is enabled, the RAM loader command is not executed. In this case, execute Chip Erase beforehand
by using the flash memory erase command. Before executing the RAM loader command, the TMP89FM42A
performs password authentication except where a product is blank. If a password is not authenticated, the
RAM loader command is not executed.
results are returned.
and on the RAM area respectively. The external controller reads this code to identify the product to which
data is to be written.
reads this code to identify the status of flash memory.
PROM mode, the flash memory write command and RAM loader command are prohibited. To disable the
flash memory security program, execute Chip Erase by using the flash memory erase command.
flash memory of more than 96Kbytes.
Checksums in the entire flash memory area (0x8000 through 0xFFFF) are calculated, and the calculation
This is a code output used to identify a product. The output code consists of information on the ROM area
The status of 0xFFE0 through 0xFFFF and that of the security program are output. The external controller
This command is used to prohibit the reading or writing of data in flash memory in parallel mode. In serial
This command is nonfunctional in the TMP89FM42A. It becomes functional if used for a product with
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TMP89FM42A