tmp89fm82t TOSHIBA Semiconductor CORPORATION, tmp89fm82t Datasheet - Page 362

• Manufacturer Part Number: tmp89fm82t
• Description: 8 Bit Microcontroller
• Manufacturer: TOSHIBA Semiconductor CORPORATION

21.1
Flash Memory Control
RA000
Flash memory standby control register
Protect cancel mode cmmand register
Protect cancel mode status register
(0x0FD2)
(0x0FB7)
(0x0FB7)
FLSVPM
FLSVPR
FLSSTB
Note 1: A value can be written to FSTB only by using a program that resides in RAM. A value written using a program residing in
Note 2: If FSTB is set to "1", do not execute instructions to fetch or read data from or write data to the flash memory. If they are
Note 3: If an instruction to read FLSSTB is executed, "0" is read from bits 7 through 0.
Note 1: After finishing re-write by protect cancel mode, please turn to the normal mode.
Note 2: After return to the normal mode, it is recommended to execute more than 1 machine cycle instruction (exp. NOP) ,before
Note 1: No fixed valuse is read from FLSVPM<bit 5>.
Read/Write
Read/Write
Read/Write
VPCEN
Bit Symbol
Bit Symbol
Bit Symbol
After reset
the flash memory will be invalidated.
executed, a flash standby reset will occur.
After reset
jump to the program on the flash memory area.
After reset
FSTB
VPREG
Flash memory standby control
Protect cancel mode status bit
R
R
7
0
7
0
7
0
-
-
Protect cancel mode command
VPCEN
R
R
6
0
6
0
6
0
-
No fix
R
5
0
5
0
5
R
Page 346
-
-
0
1
0
1
Disable flash memory standby
Enable flash memory standby
enter to Protect cancel mode, by continuous 0x6F,0x75 writing.
return to the normal mode by other data (cf. 0xFF) writing.
Normal mode
Protect cancel mode
R
R
4
0
4
0
4
0
-
-
VPREG
W
R
R
3
0
3
0
3
0
-
-
R
R
2
0
2
0
2
0
-
-
R
R
1
0
1
0
1
0
-
-
TMP89FM82T
FSTB
W
W
0
0
0
0
0
0
-