UPD78F9221CS-CAC-A Renesas Electronics America, UPD78F9221CS-CAC-A Datasheet - Page 316

• Manufacturer Part Number: UPD78F9221CS-CAC-A
• Description: MCU 8BIT 2KB FLASH 20PIN
• Manufacturer: Renesas Electronics America
• Series: 78K0S/Kx1+r

Specifications of UPD78F9221CS-CAC-A

• Core Processor: 78K0S
• Core Size: 8-Bit
• Speed: 10MHz
• Connectivity: LIN, UART/USART
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 15
• Program Memory Size: 2KB (2K x 8)
• Program Memory Type: FLASH
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 5.5 V
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

314
An example of a program when the command execution time (from write to internal verify) should be minimized in
self programming mode is shown below.
;---------------------------------------------------------------------
;START
;---------------------------------------------------------------------
ModeOnLoop:
FlashWrite:
FlashWriteLoop:
MOV
MOV
MOV
DI
MOV
MOV
MOV
MOV
MOV
NOP
HALT
BT
MOVW
MOVW
MOV
MOV
MOV
MOV
MOV
MOV
MOV
MOV
HALT
MOV
CMP
BNZ
INCW
MOVW
MK0,#11111111B
MK1,#11111111B
FLCMD,#00H
PFS,#00H
PFCMD,#0A5H
FLPMC,#01H
FLPMC,#0FEH
FLPMC,#01H
PFS.0,$ModeOnLoop
HL,#DataAdrTop
DE,#WriteAdr
FLCMD,#05H
A,D
FLAPH,A
A,E
FLAPL,A
A,[HL]
FLW,A
WDTE,#0ACH
A,PFS
A,#00H
$StatusError
HL
AX,HL
; 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 address at which data to be written is located
; Sets address at which data is to be written
; Sets flash control command (byte write)
; Sets address at which data is to be written
; Sets address at which data is to be written
; Sets data to be written
; Clears & restarts WDT
; Self programming is started
; Checks write error
; Performs abnormal termination processing when an error
; occurs.
; Address at which data to be written is located + 1
CHAPTER 18 FLASH MEMORY
; Repeats the same processing when an error occurs
; Checks completion of write to specific registers
User’s Manual U16898EJ6V0UD