參數(shù)資料
型號： 16F871
廠商： Microchip Technology Inc.
英文描述： CAT 5E CROSSOVER PATCH CORD CABLE GREEN 6 FT
中文描述： 28/40-Pin 8位CMOS閃存微控制器
文件頁數(shù)： 42/156頁
文件大?。?/td> 2816K
代理商： 16F871
PIC16F870/871
DS30569A-page 42
Preliminary
1999 Microchip Technology Inc.
4.5
Reading the FLASH Program Memory
A program memory location may be read by writing two
bytes of the address to the EEADR and EEADRH reg-
isters, setting the EEPGD control bit (EECON1<7>)
and then setting control bit RD (EECON1<0>). Once
the read control bit is set, the microcontroller will use
the next two instruction cycles to read the data. The
data is available in the EEDATA and EEDATH registers
after the second
NOP
instruction. Therefore, it can be
read as two bytes in the following instructions. The
EEDATA and EEDATH registers will hold this value until
another read operation or until it is written to by the user
(during a write operation).
EXAMPLE 4-3:
FLASH PROGRAM READ
BSF STATUS, RP1 ;
BCF STATUS, RP0 ; Bank 2
MOVLW ADDRH ;
MOVWF EEADRH ; MSByte of Program Address to read
MOVLW ADDRL ;
MOVWF EEADR ; LSByte of Program Address to read
BSF STATUS, RP0 ; Bank 3
BSF EECON1, EEPGD ; Point to PROGRAM memory
Required
BSF EECON1, RD ; EEPROM Read
Sequence
NOP ; memory is read in the next two cycles after BSF EECON1,RD
NOP ;
BCF STATUS, RP0 ; Bank 2
MOVF EEDATA, W ; W = LSByte of Program EEDATA
MOVF EEDATH, W ; W = MSByte of Program EEDATA
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
16F872 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:28-Pin, 8-Bit CMOS FLASH Microcontroller
16F876 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:28/40-pin 8-Bit CMOS FLASH Microcontrollers
16F876A 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:28/40-pin Enhanced FLASH Microcontrollers
16F877 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:28/40-pin 8-Bit CMOS FLASH Microcontrollers
16F9040 制造商:未知廠家 制造商全稱:未知廠家 功能描述:COMPACT DIGITALMULTIMETER TRUE RMS
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