UPD78F9500MA-CAC-A Datasheet, PDF (226/342 Pages) Renesas Technology Corp – 8-Bit Single-Chip Microcontrollers

CHAPTER 16 FLASH MEMORY
16.1 Features
The internal flash memory of the 78K0S/KU1+ has the following features.
{ Erase/write even without preparing a separate dedicated power supply
{ Capacity: 1/2/4 KB
• Erase unit: 1 block (256 bytes)
• Write unit: 1 block (at onboard/offboard programming time), 1 byte (at self programming time)
{ Rewriting method
• Rewriting by communication with dedicated flash memory programmer (on-board/off-board programming)
• Rewriting flash memory by user program (self programming)
{ Supports rewriting of the flash memory at onboard/offboard programming time through security functions
{ Supports security functions in block units at self programming time through protect bytes
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User’s Manual U18172EJ3V0UD