参数资料
型号: PIC12F1840T-I/MF
厂商: Microchip Technology
文件页数: 7/122页
文件大小: 0K
描述: MCU 7KB FLASH 256B RAM XLP 8DFN
标准包装: 3,300
系列: PIC® XLP™ 12F
核心处理器: PIC
芯体尺寸: 8-位
速度: 32MHz
连通性: I²C,LIN,SPI,UART/USART
外围设备: 欠压检测/复位,POR,PWM,WDT
输入/输出数: 5
程序存储器容量: 7KB(4K x 14)
程序存储器类型: 闪存
EEPROM 大小: 256 x 8
RAM 容量: 256 x 8
电压 - 电源 (Vcc/Vdd): 2.3 V ~ 5.5 V
数据转换器: A/D 4x10b
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 8-VDFN 裸露焊盘
包装: 带卷 (TR)
PIC12(L)F1840
DS41441B-page 104
Preliminary
2011 Microchip Technology Inc.
EXAMPLE 11-4:
ERASING ONE ROW OF PROGRAM MEMORY
; This row erase routine assumes the following:
; 1. A valid address within the erase block is loaded in ADDRH:ADDRL
; 2. ADDRH and ADDRL are located in shared data memory 0x70 - 0x7F
BCF
INTCON,GIE
; Disable ints so required sequences will execute properly
BANKSEL
EEADRL
MOVF
ADDRL,W
; Load lower 8 bits of erase address boundary
MOVWF
EEADRL
MOVF
ADDRH,W
; Load upper 6 bits of erase address boundary
MOVWF
EEADRH
BSF
EECON1,EEPGD
; Point to program memory
BCF
EECON1,CFGS
; Not configuration space
BSF
EECON1,FREE
; Specify an erase operation
BSF
EECON1,WREN
; Enable writes
MOVLW
55h
; Start of required sequence to initiate erase
MOVWF
EECON2
; Write 55h
MOVLW
0AAh
;
MOVWF
EECON2
; Write AAh
BSF
EECON1,WR
; Set WR bit to begin erase
NOP
; Any instructions here are ignored as processor
; halts to begin erase sequence
NOP
; Processor will stop here and wait for erase complete.
; after erase processor continues with 3rd instruction
BCF
EECON1,WREN
; Disable writes
BSF
INTCON,GIE
; Enable interrupts
R
equired
S
equence
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