UPD78F0988AGC-8BS Renesas Electronics America, UPD78F0988AGC-8BS Datasheet - Page 338

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

Specifications of UPD78F0988AGC-8BS

• Lead Free Status / Rohs Status: Supplier Unconfirmed

336
(5) _FlashAreaPreWrite subroutine
[Function]
Performs prewrite for a specified area (writes 00H to a specified area).
[Argument]
Area number (= 0, 1, 2): 1 byte (offset value: +6)
[Return value]
Status (B register)
[Register/memory status after called]
Entry RAM address, area number
[Call example]
When the entry RAM address = 0FC30H
Caution Area 0 (0000H to 1FFFH) is a boot area. Do not specify area 0 as an argument.
[Flowchart]
0: Prewrites area 0000H to 1FFFH (boot area)
1: Prewrites area 2000H to EFFFH
00H: Normal end
08H: Write error
80H: Area number specification error
;
MOV
MOV
MOV
CALL
A, #1H
!0FC36H, A
C, #20H
!8100H
·
·
·
Write error
Error
; Specifies 2000H to EFFFH
; FlashAreaPreWrite (function number setting)
CHAPTER 18
User’s Manual U13029EJ7V1UD
Write 00H in specified area
_FlashAreaPreWrite
Area number check
Normal end
Verify
No error
No error
PD78F0988A
Error
Function number = 20H
specification error
Area number