PIC16F871 Microchip Technology Inc., PIC16F871 Datasheet - Page 77

• Manufacturer Part Number: PIC16F871
• Description: 28/40-pin, 8-bit Cmos Flash Microcontrollers
• Manufacturer: Microchip Technology Inc.

TABLE 9-9:
FIGURE 9-11:
 2003 Microchip Technology Inc.
0Bh, 8Bh,
10Bh,18Bh
0Ch
18h
1Ah
8Ch
98h
99h
Legend:
Note 1:
Address
RC7/RX/DT pin
RC6/TX/CK pin
Note: Timing diagram demonstrates Sync Master mode with bit SREN = 1 and bit BRG = 0.
(Interrupt)
Write to
bit SREN
SREN bit
CREN bit
RCIF bit
RXREG
Read
x = unknown, - = unimplemented, read as '0'. Shaded cells are not used for synchronous master reception.
Bits PSPIE and PSPIF are reserved on the PIC16F870; always maintain these bits clear.
INTCON
PIR1
RCSTA
RCREG
PIE1
TXSTA
SPBRG
Name
Q2
REGISTERS ASSOCIATED WITH SYNCHRONOUS MASTER RECEPTION
'0'
Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4
USART Receive Register
Baud Rate Generator Register
PSPIF
PSPIE
SYNCHRONOUS RECEPTION (MASTER MODE, SREN)
CSRC
SPEN
Bit 7
GIE
(1)
(1)
bit0
ADIE
Bit 6
PEIE
ADIF
RX9
TX9
SREN CREN
TXEN
RCIF
RCIE
Q1 Q2 Q3 Q4Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4
Bit 5
bit1
T0IE
SYNC
Bit 4
INTE
TXIF
TXIE
bit2
RBIE
Bit 3
—
—
—
—
bit3
CCP1IF TMR2IF TMR1IF
CCP1IE TMR2IE TMR1IE
BRGH
FERR
Bit 2
T0IF
bit4
OERR
TRMT
INTF
Bit 1
bit5
PIC16F870/871
RX9D
TX9D
Bit 0
R0IF
bit6
0000 000x
0000 -000
0000 -00x
0000 0000
0000 -000
0000 -010
0000 0000
POR, BOR
Value on:
bit7
DS30569B-page 75
Q1 Q2 Q3 Q4
0000 000u
0000 -000
0000 -00x
0000 0000
0000 -000
0000 -010
0000 0000
Value on
all other
RESETS
'0'