W77LE532_07 Datasheet, PDF (68/88 Pages) Winbond – 8-BIT MICROCONTROLLER

W77LE532/W77L532A
15. IN-SYSTEM PROGRAMMING
15.1 The Loader Program locates at LDFLASH memory.
CPU is Free Run at APFLASH memory. CHPCON register had been set #03H value before CPU has
entered idle state. CPU will switch to LDFLASH memory and execute a reset action. H/W reboot mode
will switch to LDFLASH memory, too. Set SFRCN register where it locates at user's loader program to
update APFLASH bank 0 or bank 1 memory. Set a SWRESET ( CHPCON = #83H) to switch back
APFLASH after CPU has updated APFLASH program. CPU will restart to run program from reset
state.
15.2 The Loader Program locates at APFLASH memory.
CPU is Free Run at APFLASH memory. CHPCON register had been set #01H value before CPU has
entered idle state. Set SFRCN register to update LDFLASH or another bank of APFLASH program.
CPU will continue to run user's APFLASH program after CPU has updated program. Please refer
demonstrative code to understand other detail description.
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