UPD78F9222MC(T)-5A4-A NEC, UPD78F9222MC(T)-5A4-A Datasheet - Page 307

• Manufacturer Part Number: UPD78F9222MC(T)-5A4-A
• Description: 8BIT MCU, 4K FLASH, 256B RAM, 78F9222
• Manufacturer: NEC

Specifications of UPD78F9222MC(T)-5A4-A

• Controller Family/series: UPD78
• No. Of I/o's: 17
• Ram Memory Size: 256Byte
• Cpu Speed: 10MHz
• No. Of Timers: 4
• No. Of: RoHS Compliant
• Core Size: 8bit
• Program Memory Size: 4KB
• Oscillator Type: External, Internal

An example of a program when the command execution time (from erasure to black check) should be minimized in
self programming mode is shown below.
;---------------------------------------------------------------------
;START
;---------------------------------------------------------------------
ModeOnLoop:
FlashBlockErase:
FlashBlockBlankCheck:
MOV
MOV
MOV
DI
MOV
MOV
MOV
MOV
MOV
NOP
HALT
BT
MOV
MOV
MOV
MOV
MOV
MOV
HALT
MOV
CMP
BNZ
MOV
MOV
MOV
MK0,#11111111B
MK1,#11111111B
FLCMD,#00H
PFS,#00H
PFCMD,#0A5H
FLPMC,#01H
FLPMC,#0FEH
FLPMC,#01H
PFS.0,$ModeOnLoop
FLCMD,#03H
FLAPH,#07H
FLAPL,#00H
FLAPHC,#07H
FLAPLC,#00H
WDTE,#0ACH
A,PFS
A,#00H
$StatusError
FLCMD,#04H
FLAPH,#07H
FLAPL,#00H
; Masks all interrupts
; Clears FLCMD register
; Configure settings so that the CPU clock ≥ 1 MHz
; Clears flash status register
; PFCMD register control
; FLPMC register control (sets value)
; FLPMC register control (inverts set value)
; Sets self programming mode with FLPMC register control (sets
; value)
; Sets flash control command (block erase)
; Sets number of block to be erased (block 7 is specified
; here)
; Fixes FLAPL to “00H”
; Sets erase block compare number (same value as that of
; FLAPH)
; Fixes FLAPLC to “00H”
; Clears & restarts WDT
; Self programming is started
; Checks erase error
; Performs abnormal termination processing when an error
; occurs.
; Sets flash control command (block blank check)
; Sets number of block for blank check (block 7 is specified
; here)
; Fixes FLAPL to “00H”
CHAPTER 18 FLASH MEMORY
; Repeats the same processing when an error occurs
; Checks completion of write to specific registers
User’s Manual U16898EJ5V0UD
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