UPD78F0988AGC-8BS Renesas Electronics America, UPD78F0988AGC-8BS Datasheet - Page 340

• Manufacturer Part Number: UPD78F0988AGC-8BS
• Manufacturer: Renesas Electronics America

Specifications of UPD78F0988AGC-8BS

• Lead Free Status / Rohs Status: Supplier Unconfirmed

338
(7) _FlashAreaWriteBack subroutine
[Function]
Writes back the flash signature codes.
(Writeback is an operation to return a flash area in an overerasure status after
erasure to the proper erasure status.)
[Argument]
Area number (= 0, 1):
[Return value]
Status (B register)
[Register/memory status after called]
Entry RAM starting address and area number
[Call example]
When the entry RAM address = 0FC30H
;
[Notes]
Set the writeback time to 50 ms/writeback.
Set the number of writebacks to 30 max., assuming 50 ms/writeback.
MOV A, #1H
MOV !0FC36H, A
MOV C, #40H
CALL !8100H
00H:
02H:
04H:
80H:
Normal end
Blank check error
Overerase check error
Write address error
1 byte (offset value: +6)
; Area 1 setting
; FlashAreaWriteBack (function number setting)
CHAPTER 18
User’s Manual U13029EJ7V1UD
PD78F0988A