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參數(shù)資料
| 型號(hào)： | MCV14AI/P |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, FLASH, 20 MHz, RISC MICROCONTROLLER, PDIP14 |
| 封裝： | 0.300 INCH, ROHS COMPLIANT, PLASTIC, DIP-14 |
| 文件頁(yè)數(shù)： | 17/84頁(yè) |
| 文件大?。?/td> | 1007K |
| 代理商： | MCV14AI/P |
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MCV14A
DS41338B-page 22
Preliminary
2009 Microchip Technology Inc.
EXAMPLE 4-3:
DATA MEMORY WRITE
4.4
DATA MEMORY OPERATION
DURING CODE-PROTECT
Data memory can be code-protected by programming
the CPDF bit in the Configuration Word (Register 7-1)
to ‘0’.
Note 1: Only a series of BSF commands will work
to enable the memory write sequence
documented in Example 4-3. No other
sequence of commands will work, no
exceptions.
2: For reads, erases and writes to the Flash
data memory, there is no need to insert a
NOP
into the user code as is done on
mid-range devices. The instruction imme-
diately following the “BSF EECON,WR/RD”
will be fetched and executed properly.
BSF
FSR,5
;SWITCH TO BANK 1
MOVLW
EE_ADR_WRITE
;LOAD ADDRESS TO
;WRITE
MOVWF
EEADR
;INTO EEADR
;REGISTER
MOVLW
EE_DATA_TO_WRITE ;LOAD DATA TO
MOVWF
EEDATA
;INTO EEDATA
;REGISTER
BSF
EECON,WREN
;ENABLE WRITES
BSF
EECON,WR
;START WRITE
;SEQUENCE
NOP
;WAIT AS READ
;INSTRUCTION
;IS DECODED
NOP
;INSTRUCTION
IGNORED
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MD8031AHB883B | 8-BIT, 12 MHz, MICROCONTROLLER, CDIP40 |
| MD8255A | 24 I/O, PIA-GENERAL PURPOSE, PDIP40 |
| MD82C52-/883 | 1 CHANNEL(S), 1M bps, SERIAL COMM CONTROLLER, CDIP28 |
| MR82C52-/883 | 1 CHANNEL(S), 1M bps, SERIAL COMM CONTROLLER, CQCC28 |
| MD82C55A-5/B | 24 I/O, PIA-GENERAL PURPOSE, CDIP40 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MCV15/10-GF-381 | 制造商:Phoenix Contact 功能描述:HEADER PCB VERTICAL 3.81MM 10WAY |
| MCV15/2-GF-381 | 制造商:Phoenix Contact 功能描述:HEADER PCB VERTICAL 3.81MM 2WAY |
| MCV15/3-GF-381 | 制造商:Phoenix Contact 功能描述:HEADER PCB VERTICAL 3.81MM 3WAY |
| MCV15/4-GF-381 | 制造商:Phoenix Contact 功能描述:HEADER PCB VERTICAL 3.81MM 4WAY |
| MCV15/5-GF-381 | 制造商:Phoenix Contact 功能描述:HEADER PCB VERTICAL 3.81MM 5WAY |
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