R01UH0822EJ0100 Rev.1.00
Page 985 of 1041
Jul 31, 2019
RX13T Group
31. Flash Memory (FLASH)
31.12 Rewriting by Self-Programming
31.12.1
Overview
The MCU supports rewriting of the flash memory by the user program. The ROM and E2 DataFlash can be rewritten by
preparing a routine to rewrite the flash memory (flash rewrite routine) in the user program.
When rewriting the E2 DataFlash, the BGO can be used to execute the flash rewrite routine on the ROM. The E2
DataFlash can also be rewritten by executing the flash rewrite routine that is transferred on the RAM in advance.
Figure 31.38
Self-Programming Overview
Flash rewrite routine
Flash information
Erase/program
Note 1. The ROM cannot be rewritten by executing the flash rewrite routine on the ROM.
ROM or E2 DataFlash
On-chip RAM or on-chip ROM
*1