TMP89FS60 datasheet(349/410 Pages) TOSHIBA

349 / 410 page

Page 335

TMP89FS60

RA002

Each command is outlined below. For detailed information on how each command works, refer to 22.8.1 and sub-

sequent sections.

1. Flash memory erase command

Either Chip Erase (total erase of flash memory) or Sector Erase (erase of flash memory in 4K-byte

units) can be used to erase the data in flash memory. Data in the erased area is 0xFF. If the security pro-

gram is enabled or if the option code EPFC_OP is 0xFF, the flash erase command of Sector Erase cannot

be executed.

To disable the security program setting, execute the flash erase command of Chip Erase. Before erasing

the data in flash memory, the TMP89FS60 performs password authentication except where a product is a

blank product or EPFC_OP is 0xFF. If a password is not authenticated, the flash memory erase command

is not executed.

2. Flash memory write command

Data can be written in single-byte units to a specified address in flash memory. Provision the external

controller so that it transmits data to write as binary data in the Intel Hex format. If errors do not occur

until the end record is reached, the TMP89FS60 calculates checksums in the entire flash memory area

(0x1000 through 0xFFFF), and returns the calculation results. If the security program is enabled, the flash

memory write command cannot be executed. In this case, execute Chip Erase beforehand by using the

flash memory erase command. Before executing the flash memory write command, the TMP89FS60 per-

forms password authentication except where a product is a blank product. If a password is not authenti-

cated, the flash memory write command is not executed.

3. Flash memory read command

Data can be read from a specified address in flash memory in single-byte units. Provision the external

controller so that it transmits the address in memory where a read starts, as well as the number of bytes.

After outputting the number of data equal to the number of bytes, the TMP89FS60 calculates the check-

sums of the output data, and returns the calculation results. If the security program is enabled, the flash

memory read command cannot be executed. In this case, execute Chip Erase beforehand by using the

flash memory erase command. Before executing the flash memory read command, the TMP89FS60 per-

forms password authentication except where a product is blank. If a password is not authenticated, the

flash memory read command is not executed.

Table 22-5 Operation Command in Serial PROM Mode

Command data

Operation command

Description

0x86 or 0x30

Setup

(matching data 1, 2)

After a reset is released, the serial PROM mode always starts operation with this

command.

If matching data 1 is 0x86, communication starts in the UART format. If matching

data 1 is 0x30, communication starts in the SIO format.

0xF0

Flash memory erase

Data in the flash memory area (address 0x1000 through 0xFFFF) can be erased.

0x30

Flash memory write

Data can be written to the flash memory area (address 0x1000 through 0xFFFF).

0x40

Flash memory read

Data can be read from the flash memory area (address 0x1000 through 0xFFFF).

0x60

RAM loader

Data can be written to a specified RAM area (address 0x0060 through 0x0C3F).

0x90

Flash memory SUM output

0xFF check data and 2-byte checksums of the entire flash memory area (address

0x1000 through 0xFFFF) are output in descending order (from upper to lower

bytes).

0xC0

Product ID code output

Product ID codes are output.

0xC3

Flash memory status output

The security program status and other status codes are output.

0xD0

Mask ROM emulation setting

Flash products of 124K or 96Kbytes can be provisioned to emulate a small-

capacity mask ROM product.

0xFA

Flash memory security setting

The security program setting is enabled.

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