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PIC16F877T-20PQ 参数 Datasheet PDF下载

PIC16F877T-20PQ图片预览
型号: PIC16F877T-20PQ
PDF下载: 下载PDF文件 查看货源
内容描述: 8位微控制器\n [8-Bit Microcontroller ]
分类和应用: 微控制器
文件页数/大小: 200 页 / 3338 K
品牌: ETC [ ETC ]
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PIC16F87X  
FIGURE 10-7: ASYNCHRONOUS RECEPTION WITH ADDRESS DETECT  
Start  
bit  
Start  
bit  
RC7/RX/DT (pin)  
bit0  
bit1  
Stop  
bit  
bit8 Stop  
bit  
bit0  
bit8  
Load RSR  
Read  
WORD 1  
RCREG  
Bit8 = 0, Data Byte  
Bit8 = 1, Address Byte  
RCIF  
Note:  
This timing diagram shows a data byte followed by an address byte. The data byte is not read into the RCREG  
(receive buffer) because ADDEN = 1.  
FIGURE 10-8: ASYNCHRONOUS RECEPTION WITH ADDRESS BYTE FIRST  
Start  
bit  
Start  
bit  
RC7/RX/DT (pin)  
bit0  
bit1  
Stop  
bit  
bit8 Stop  
bit  
bit0  
bit8  
Load RSR  
Read  
WORD 1  
RCREG  
Bit8 = 1, Address Byte  
Bit8 = 0, Data Byte  
RCIF  
Note:  
This timing diagram shows a data byte followed by an address byte. The data byte is not read into the RCREG  
(receive buffer) because ADDEN was not updated and still = 0.  
TABLE 10-7: REGISTERS ASSOCIATED WITH ASYNCHRONOUS RECEPTION  
Value on:  
POR,  
BOR  
Value on  
all other  
Resets  
Address Name  
Bit 7  
Bit 6  
Bit 5  
Bit 4  
Bit 3  
Bit 2  
Bit 1  
Bit 0  
(1)  
0Ch  
18h  
1Ah  
8Ch  
98h  
99h  
PIR1  
PSPIF  
SPEN  
ADIF  
RX9  
RCIF  
TXIF  
SSPIF CCP1IF TMR2IF TMR1IF 0000 0000 0000 0000  
RCSTA  
SREN CREN ADDEN FERR  
OERR  
RX9D 0000 000x 0000 000x  
RCREG USART Receive Register  
0000 0000 0000 0000  
(1)  
PIE1  
PSPIE  
CSRC  
ADIE  
TX9  
RCIE  
TXIE  
SSPIE CCP1IE TMR2IE TMR1IE 0000 0000 0000 0000  
TXSTA  
TXEN SYNC  
BRGH  
TRMT  
TX9D 0000 -010 0000 -010  
SPBRG Baud Rate Generator Register  
0000 0000 0000 0000  
Legend: x= unknown, -= unimplemented locations read as '0'. Shaded cells are not used for Asynchronous Reception.  
Note 1: Bits PSPIE and PSPIF are reserved on the 28-pin devices; always maintain these bits clear.  
DS30292B-page 104  
1999 Microchip Technology Inc.  
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