參數(shù)資料
型號: PIC12F1840T-I/SN
廠商: Microchip Technology
文件頁數(shù): 7/122頁
文件大?。?/td> 0K
描述: MCU 7KB FLASH 256B RAM XLP 8SOIC
標(biāo)準(zhǔn)包裝: 3,300
系列: PIC® XLP™ 12F
核心處理器: PIC
芯體尺寸: 8-位
速度: 32MHz
連通性: I²C,LIN,SPI,UART/USART
外圍設(shè)備: 欠壓檢測/復(fù)位,POR,PWM,WDT
輸入/輸出數(shù): 5
程序存儲器容量: 7KB(4K x 14)
程序存儲器類型: 閃存
EEPROM 大?。?/td> 256 x 8
RAM 容量: 256 x 8
電壓 - 電源 (Vcc/Vdd): 2.3 V ~ 5.5 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 4x10b
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 8-SOIC(0.154",3.90mm 寬)
包裝: 帶卷 (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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