參數(shù)資料
型號: PIC18LF96J65-I/PT
廠商: Microchip Technology
文件頁數(shù): 16/131頁
文件大?。?/td> 0K
描述: IC PIC MCU FLASH 48KX16 100TQFP
標準包裝: 90
系列: PIC® 18F
核心處理器: PIC
芯體尺寸: 8-位
速度: 41.667MHz
連通性: EBI/EMI,以太網(wǎng),I²C,SPI,UART/USART
外圍設備: 欠壓檢測/復位,POR,PWM,WDT
輸入/輸出數(shù): 70
程序存儲器容量: 96KB(48K x 16)
程序存儲器類型: 閃存
RAM 容量: 3808 x 8
電壓 - 電源 (Vcc/Vdd): 2 V ~ 3.6 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 16x10b
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 100-TQFP
包裝: 托盤
PIC18F97J60 FAMILY
DS39762F-page 112
2011 Microchip Technology Inc.
EXAMPLE 7-3:
WRITING TO FLASH PROGRAM MEMORY
MOVLW
CODE_ADDR_UPPER
; Load TBLPTR with the base
MOVWF
TBLPTRU
; address of the memory block
MOVLW
CODE_ADDR_HIGH
MOVWF
TBLPTRH
MOVLW
CODE_ADDR_LOW
MOVWF
TBLPTRL
ERASE_BLOCK
BSF
EECON1, WREN
; enable write to memory
BSF
EECON1, FREE
; enable Row Erase operation
BCF
INTCON, GIE
; disable interrupts
MOVLW
55h
MOVWF
EECON2
; write 55h
MOVLW
0AAh
MOVWF
EECON2
; write 0AAh
BSF
EECON1, WR
; start erase (CPU stall)
BSF
INTCON, GIE
; re-enable interrupts
MOVLW
D'16'
MOVWF
WRITE_COUNTER
; Need to write 16 blocks of 64 to write
; one erase block of 1024
RESTART_BUFFER
MOVLW
D'64'
MOVWF
COUNTER
MOVLW
BUFFER_ADDR_HIGH
; point to buffer
MOVWF
FSR0H
MOVLW
BUFFER_ADDR_LOW
MOVWF
FSR0L
FILL_BUFFER
...
; read the new data from I2C, SPI,
; PSP, USART, etc.
WRITE_BUFFER
MOVLW
D’64
; number of bytes in holding register
MOVWF
COUNTER
WRITE_BYTE_TO_HREGS
MOVFF
POSTINC0, WREG
; get low byte of buffer data
MOVWF
TABLAT
; present data to table latch
TBLWT+*
; write data, perform a short write
; to internal TBLWT holding register.
DECFSZ
COUNTER
; loop until buffers are full
BRA
WRITE_BYTE_TO_HREGS
PROGRAM_MEMORY
BSF
EECON1, WREN
; enable write to memory
BCF
INTCON, GIE
; disable interrupts
MOVLW
55h
Required
MOVWF
EECON2
; write 55h
Sequence
MOVLW
0AAh
MOVWF
EECON2
; write 0AAh
BSF
EECON1, WR
; start program (CPU stall)
BSF
INTCON, GIE
; re-enable interrupts
BCF
EECON1, WREN
; disable write to memory
DECFSZ
WRITE_COUNTER
; done with one write cycle
BRA
RESTART_BUFFER
; if not done replacing the erase block
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