TMP89FS60 datasheet(350/410 Pages) TOSHIBA

350 / 410 page

Page 336

22. Serial PROM Mode

22.8 Operation Commands

TMP89FS60

RA002

4. RAM loader command

The RAM loader transfers the Intel Hex format data sent by the external controller to the built-in RAM.

If it completes the data transfer normally, it calculates the checksums, transmits the calculation results,

jumps to the RAM address specified by the first data record, and starts to execute the user program. If the

security 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

TMP89FS60 performs password authentication except where a product is blank. If a password is not

authenticated, the RAM loader command is not executed.

5. Flash memory SUM output command

Checksums in the entire flash memory area (0x1000 through 0xFFFF) are calculated, and the calcula-

tion results are returned.

6. Product ID code output code

This is a code output used to identify a product. The output code consists of information on the ROM

area and on the RAM area respectively. The external controller reads this code to identify the product to

which data is to be written.

7. Flash memory status output code

The status of 0xFFE0 through 0xFFFF and that of the security program are output. The external control-

ler reads this code to identify the status of flash memory.

8. Mask ROM emulation setting command

9. Flash memory security setting command

This command is used to prohibit the reading of data in flash memory in parallel mode. In serial 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.

This command is nonfunctional in the TMP89FS60. It becomes functional if used for a product with

flash memory of more than 96Kbytes.

TMP89FS60 Datasheet(PDF) 350 Page - Toshiba Semiconductor