upd78f0103hmca1-5a4-a Renesas Electronics Corporation., upd78f0103hmca1-5a4-a Datasheet - Page 349

• Manufacturer Part Number: upd78f0103hmca1-5a4-a
• Description: 8-bit Single-chip Microcontrollers
• Manufacturer: Renesas Electronics Corporation.

21.7.1 Registers used for self-programming function
(1) Flash programming mode control register (FLPMC)
The following three registers are used for the self-programming function.
• Flash programming mode control register (FLPMC)
• Flash protect command register (PFCMD)
• Flash status register (PFS)
This register is used to enable or disable writing or erasing of the flash memory and to set the operation mode
during self-programming.
FLPMC can be written only in a specific sequence (see 21.7.1 (2) Flash protect command register) so that the
application system does not stop inadvertently due to malfunction caused by noise or program hang-up.
FLPMC can be set by a 1-bit or 8-bit memory manipulation instruction.
RESET input sets this register to 0xH
Note Differs depending on the operation mode.
• User mode:
• On-board mode: 0CH
08H
Note
CHAPTER 21 FLASH MEMORY
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User’s Manual U16846EJ3V0UD
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