PIC16F872 Datasheet, PDF (56/160 Pages) Microchip Technology – 28-Pin, 8-Bit CMOS FLASH Microcontroller

PIC16F872
REGISTER 9-3: SSPCON2: SYNC SERIAL PORT CONTROL REGISTER2 (ADDRESS 91h)
R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0
GCEN
bit7
bit 7:
ACKSTAT ACKDT ACKEN RCEN
PEN RSEN
SEN
bit0
R = Readable bit
W = Writable bit
U = Unimplemented bit,
read as ‘0’
- n= Value at POR reset
GCEN: General Call Enable bit (In I²C slave mode only)
1 = Enable interrupt when a general call address (0000h) is received in the SSPSR.
0 = General call address disabled.
bit 6:
ACKSTAT: Acknowledge Status bit (In I²C master mode only)
In master transmit mode:
1 = Acknowledge was not received from slave.
0 = Acknowledge was received from slave.
bit 5:
ACKDT: Acknowledge Data bit (In I²C master mode only)
In master receive mode:
Value that will be transmitted when the user initiates an Acknowledge sequence at the end of a receive.
1 = Not Acknowledge.
0 = Acknowledge.
bit 4:
ACKEN: Acknowledge Sequence Enable bit (In I²C master mode only).
In master receive mode:
1 = Initiate Acknowledge sequence on SDA and SCL pins, and transmit ACKDT data bit. Automatically
cleared by hardware.
0 = Acknowledge sequence idle.
bit 3:
RCEN: Receive Enable bit (In I²C master mode only).
1 = Enables Receive mode for I²C.
0 = Receive idle.
bit 2:
PEN: Stop Condition Enable bit (In I²C master mode only).
SCK release control
1 = Initiate Stop condition on SDA and SCL pins. Automatically cleared by hardware.
0 = Stop condition idle.
bit 1:
RSEN: Repeated Start Condition Enabled bit (In I²C master mode only)
1 = Initiate Repeated Start condition on SDA and SCL pins. Automatically cleared by hardware.
0 = Repeated Start condition idle.
bit 0:
SEN: Start Condition Enabled bit (In I²C master mode only)
1 = Initiate Start condition on SDA and SCL pins. Automatically cleared by hardware.
0 = Start condition idle.
Note: For bits ACKEN, RCEN, PEN, RSEN, SEN: If the I²C module is not in the idle mode, this bit may not
be set (no spooling), and the SSPBUF may not be written (or writes to the SSPBUF are disabled).
DS30221A-page 56
Preliminary
© 1999 Microchip Technology Inc.