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PIC16C71-04/SO 参数 Datasheet PDF下载

PIC16C71-04/SO图片预览
型号: PIC16C71-04/SO
PDF下载: 下载PDF文件 查看货源
内容描述: 8位CMOS微控制器与A / D转换器 [8-Bit CMOS Microcontrollers with A/D Converter]
分类和应用: 转换器微控制器
文件页数/大小: 176 页 / 1596 K
品牌: MICROCHIP [ MICROCHIP ]
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PIC16C71X  
4.2.2.6  
PCON REGISTER  
Note: BOR is unknown on Power-on Reset. It  
must then be set by the user and checked  
on subsequent resets to see if BOR is  
clear, indicating a brown-out has occurred.  
The BOR status bit is a don't care and is  
not necessarily predictable if the brown-out  
circuit is disabled (by clearing the BODEN  
bit in the Configuration word).  
Applicable Devices 710 71 711 715  
The Power Control (PCON) register contains a flag bit  
to allow differentiation between a Power-on Reset  
(POR) to an external MCLR Reset or WDT Reset.  
Those devices with brown-out detection circuitry con-  
tain an additional bit to differentiate a Brown-out Reset  
(BOR) condition from a Power-on Reset condition. For  
the PIC16C715 the PCON register also contains status  
bits MPEEN and PER. MPEEN reflects the value of the  
MPEEN bit in the configuration word. PER indicates a  
parity error reset has occurred.  
FIGURE 4-12: PCON REGISTER (ADDRESS 8Eh), PIC16C710/711  
U-0  
U-0  
U-0  
U-0  
U-0  
U-0  
R/W-0  
POR  
R/W-q  
BOR  
R
= Readable bit  
W = Writable bit  
bit7  
bit0  
U
= Unimplemented bit,  
read as ‘0’  
- n = Value at POR reset  
bit 7-2: Unimplemented: Read as '0'  
bit 1:  
POR: Power-on Reset Status bit  
1 = No Power-on Reset occurred  
0 = A Power-on Reset occurred (must be set in software after a Power-on Reset occurs)  
bit 0:  
BOR: Brown-out Reset Status bit  
1 = No Brown-out Reset occurred  
0 = A Brown-out Reset occurred (must be set in software after a Brown-out Reset occurs)  
FIGURE 4-13: PCON REGISTER (ADDRESS 8Eh), PIC16C715  
R-U  
U-0  
U-0  
U-0  
U-0  
R/W-1  
PER  
R/W-0  
POR  
R/W-q  
(1)  
MPEEN  
BOR  
R
= Readable bit  
W = Writable bit  
bit7  
bit0  
U
= Unimplemented bit,  
read as ‘0’  
- n = Value at POR reset  
bit 7:  
MPEEN: Memory Parity Error Circuitry Status bit  
Reflects the value of configuration word bit, MPEEN  
bit 6-3: Unimplemented: Read as '0'  
bit 2:  
bit 1:  
bit 0:  
PER: Memory Parity Error Reset Status bit  
1 = No Error occurred  
0 = Program Memory Fetch Parity Error occurred (must be set in software after a Parity Error Reset)  
POR: Power-on Reset Status bit  
1 = No Power-on Reset occurred  
0 = A Power-on Reset occurred (must be set in software after a Power-on Reset occurs)  
BOR: Brown-out Reset Status bit  
1 = No Brown-out Reset occurred  
0 = A Brown-out Reset occurred (must be set in software after a Brown-out Reset occurs)  
DS30272A-page 22  
1997 Microchip Technology Inc.  
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