tmp86fh46bng TOSHIBA Semiconductor CORPORATION, tmp86fh46bng Datasheet - Page 193

• Manufacturer Part Number: tmp86fh46bng
• Description: 8 Bit Microcontroller Tlcs-870/c Series
• Manufacturer: TOSHIBA Semiconductor CORPORATION

Example :Specify PNSA to F000H, and the password string to 8 bytes from address F001H
15.10.1
15.10.2
15.10.3
(PCSA becomes F001H.)
Password Section code abs = 0F000H
flash memory. When the password string is not matched to the data in the flash memory, the device enters
the halt condition due to the password error.
the serial PROM mode.
fore, it is recommended to use a fixed password in the program development stage.
The password string transmitted from the external controller is compared with the specified data in the
If a password error occurs, the device enters the halt condition. In this case, reset the device to reactivate
If a program is modified many times in the development stage, confusion may arise as to the password. There-
Password String
Handling of Password Error
Password Management during Program Development
UART
Example
PNSA = F012H
PCSA = F107H
Password string = 01H,02H,03H,04H,05H
DB
DB
08H
“CODE1234”
RXD pin
06H,07H,08H
Figure 15-5 Password Comparison
: PNSA definition
: Password string definition
F0H 12H F1H 07H 01H 02H 03H 04H 05H 06H 07H 08H
PNSA
PCSA
Page 175
F012H
F107H
F108H
F109H
F10AH
F10BH
F10CH
F10DH
F10EH
Flash memory
08H
01H
02H
03H
04H
05H
06H
07H
08H
Password string
"08H" becomes
the umber of
passwords
8 bytes
Compare
TMP86FH46BNG