参数资料
型号: R5F562N8ADFP#V0
厂商: Renesas Electronics America
文件页数: 117/148页
文件大小: 0K
描述: MCU 32BIT FLASH 512KROM 100LQFP
产品培训模块: RX Compare Match Timer
RX DMAC
标准包装: 1
系列: RX600
核心处理器: RX
芯体尺寸: 32-位
速度: 100MHz
连通性: EBI/EMI,I²C,SCI,SPI,USB
外围设备: DMA,LVD,POR,PWM,WDT
输入/输出数: 72
程序存储器容量: 512KB(512K x 8)
程序存储器类型: 闪存
RAM 容量: 96K x 8
电压 - 电源 (Vcc/Vdd): 2.7 V ~ 3.6 V
数据转换器: A/D 8x10/12b,D/A 1x10b
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 100-LQFP
包装: 托盘
PIC18F6520/8520/6620/8620/6720/8720
DS39609B-page 68
2004 Microchip Technology Inc.
EXAMPLE 5-3:
WRITING TO FLASH PROGRAM MEMORY
MOVLW
D’64
; number of bytes in erase block
MOVWF
COUNTER
MOVLW
BUFFER_ADDR_HIGH
; point to buffer
MOVWF
FSR0H
MOVLW
BUFFER_ADDR_LOW
MOVWF
FSR0L
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
READ_BLOCK
TBLRD*+
; read into TABLAT, and inc
MOVF
TABLAT, W
; get data
MOVWF
POSTINC0
; store data
DECFSZ
COUNTER
; done?
BRA
READ_BLOCK
; repeat
MODIFY_WORD
MOVLW
DATA_ADDR_HIGH
; point to buffer
MOVWF
FSR0H
MOVLW
DATA_ADDR_LOW
MOVWF
FSR0L
MOVLW
NEW_DATA_LOW
; update buffer word
MOVWF
POSTINC0
MOVLW
NEW_DATA_HIGH
MOVWF
INDF0
ERASE_BLOCK
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
BSF
EECON1, EEPGD
; point to Flash program memory
BCF
EECON1, CFGS
; access Flash program memory
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
Required
MOVLW
AAh
Sequence
MOVWF
EECON2
; write AAH
BSF
EECON1, WR
; start erase (CPU stall)
NOP
BSF
INTCON, GIE
; re-enable interrupts
TBLRD*-
; dummy read decrement
WRITE_BUFFER_BACK
MOVLW
8
; number of write buffer groups of 8 bytes
MOVWF
COUNTER_HI
MOVLW
BUFFER_ADDR_HIGH
; point to buffer
MOVWF
FSR0H
MOVLW
BUFFER_ADDR_LOW
MOVWF
FSR0L
PROGRAM_LOOP
MOVLW
8
; number of bytes in holding register
MOVWF
COUNTER
WRITE_WORD_TO_HREGS
MOVFF
POSTINC0, WREG
; get low byte of buffer data
; 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_WORD_TO_HREGS
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