tmp89fm42 TOSHIBA Semiconductor CORPORATION, tmp89fm42 Datasheet - Page 353

• Manufacturer Part Number: tmp89fm42
• Description: 8 Bit Microcontroller
• Manufacturer: TOSHIBA Semiconductor CORPORATION

RA002
Note 4: If the security program is enabled in flash memory or if a password error occurs, the TMP89FM42 stops communication,
Note 5: If a communication error occurs during the transfer of a password address or a password string, the TMP89FM42 stops
Note 6: If all data in flash memory are the same data, make sure that you never write data to the address 0xFFE0 through
Note 7: The n-th-2 byte is a flag for detecting an overwrite. If memory contents at an address where data is to be written are other
Therefore, if a password error occurs, initialize the TMP89FM42 by using the RESET pin, and restart the serial PROM
mode.
and goes into an idle state. Therefore, if a password error occurs, initialize the TMP89FM42 by using the
restart the serial PROM mode.
communication and goes into an idle state. Therefore, when a password error occurs, initialize the TMP89FM42 by using
the
0xFFFF. If data is written to this address, a password error occurs, and the subsequent operations cannot be performed.
than 0xFF, the n-th-2 byte is 0xAA (data is not written to this address, and the data write routine is skipped). The check-
sum at the n-th-1 byte or n-th byte is calculated based on data in which data in memory areas where data was not written
are included. Therefore, if an overwrite is detected, the checksum of transmitted data does not match that at the n-th-1
byte or n-th byte.
RESET
pin, and restart the serial PROM mode.
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TMP89FM42
RESET
pin, and