參數資料
型號: R5F562N7BDBG#U0
廠商: Renesas Electronics America
文件頁數: 117/148頁
文件大?。?/td> 0K
描述: MCU 32BIT FLASH 384KROM 176LFBGA
產品培訓模塊: RX Compare Match Timer
RX DMAC
標準包裝: 1
系列: RX600
核心處理器: RX
芯體尺寸: 32-位
速度: 100MHz
連通性: CAN,EBI/EMI,I²C,SCI,SPI,USB
外圍設備: DMA,LVD,POR,PWM,WDT
輸入/輸出數: 126
程序存儲器容量: 384KB(384K x 8)
程序存儲器類型: 閃存
RAM 容量: 64K x 8
電壓 - 電源 (Vcc/Vdd): 2.7 V ~ 3.6 V
數據轉換器: A/D 8x10/12b,D/A 2x10b
振蕩器型: 內部
工作溫度: -40°C ~ 85°C
封裝/外殼: 176-LFBGA
包裝: 托盤
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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