tmp86fh46bng TOSHIBA Semiconductor CORPORATION, tmp86fh46bng Datasheet - Page 160

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

14.1
Flash Memory Control
14.1
Flash Memory Control Register
14.1.1
(0FFFH)
FLSCR
The flash memory is controlled via the flash memory control register (FLSCR).
Note 1: The command sequence of the flash memory can be executed only when FLSMD="0011B". In other cases, any at-
Note 2: FLSMD must be set to either "1100B" or "0011B".
Note 3: Bits 3 through 0 in FLSCR are always read as don’t care.
Flash Memory Control
ation. This write protection feature is realized by disabling flash memory command sequence execution via
the flash memory control register (write protect). To enable command sequence execution, set
FLSCR<FLSMD> to “0011B”. To disable command sequence execution, set FLSCR<FLSMD> to “1100B”.
After reset, FLSCR<FLSMD> is initialized to “1100B” to disable command sequence execution. Normally,
FLSCR<FLSMD> should be set to “1100B” except when the flash memory needs to be written or erased.
The flash memory can be protected from inadvertent write due to program error or microcontroller misoper-
FLSMD
Flash Memory Command Sequence Execution Control (FLSCR<FLSMD>)
7
tempts to execute the command sequence are ineffective.
Flash memory command sequence exe-
cution control
6
FLSMD
5
4
Page 142
3
1100: Disable command sequence execution
0011: Enable command sequence execution
Others: Reserved
2
1
0
(Initial value: 1100 ****)
TMP86FH46BNG
R/W