TMP86FS27FG datasheet(24/32 Pages) TOSHIBA

24 / 32 page

86FS27-24

2007-08-07

TMP86FS27

3. Password string

A password string sent from the controller is compared with the specified data in the flash

memory. If the password string does not match the specified data in the flash memory, a

password error occurs and the TMP86FS27 stops operating.

4. Handling of password error

If a password error occurs, the UART function of TMP86FS27 stops without returning error

code to the controller. Therefore, when a password error occurs, the TMP86FS27 should be

reset by RESET pin input.

2.12 Product Discrimination Code

The product discrimination code is a 13-byte data, that includes the start address and the end

address of ROM. Table 2.12.1 shows the product discrimination code format.

Table 2.12.1 Product Discrimination Code Format

Data

The Meaning of Data

In Case of TMP86FS27

1st

Start mark (3AH)

3AH

2nd

The number of transfer data (from 3rd to 13th byte)

0AH

3rd

Length of address

02H

4th

Reserved data

03H

5th

Reserved data

00H

6th

Reserved data

00H

7th

Reserved data

00H

8th

The number of ROM block

01H

9th

The upper byte of the first address of ROM

10H (Depends on the product)

10th

The lower byte of the first address of ROM

00H (Depends on the product)

11th

The upper byte of the end address of ROM

FFH (Depends on the product)

12th

The lower byte of the end address of ROM

FFH (Depends on the product)

13th

Checksum of transferred data (from 3rd to 12th byte)

ECH (Depends on the product)

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