PIC16F1933_11 Datasheet, PDF (269/430 Pages) Microchip Technology – 28-Pin Flash-Based, 8-Bit CMOS Microcontrollers LCD Driver and nanoWatt XLP Technology

PIC16(L)F1933
REGISTER 24-2: SSPCON1: SSP CONTROL REGISTER 1
R/C/HS-0/0
WCOL
bit 7
R/C/HS-0/0
SSPOV
R/W-0/0
SSPEN
R/W-0/0
CKP
R/W-0/0
R/W-0/0
R/W-0/0
SSPM<3:0>
R/W-0/0
bit 0
Legend:
R = Readable bit
u = Bit is unchanged
‘1’ = Bit is set
W = Writable bit
x = Bit is unknown
‘0’ = Bit is cleared
U = Unimplemented bit, read as ‘0’
-n/n = Value at POR and BOR/Value at all other Resets
HS = Bit is set by hardware
C = User cleared
bit 7
WCOL: Write Collision Detect bit
Master mode:
1 = A write to the SSPBUF register was attempted while the I²C conditions were not valid for a transmission to be
started
0 = No collision
Slave mode:
1 = The SSPBUF register is written while it is still transmitting the previous word (must be cleared in software)
0 = No collision
bit 6
SSPOV: Receive Overflow Indicator bit⁽¹⁾
In SPI mode:
1 = A new byte is received while the SSPBUF register is still holding the previous data. In case of overflow, the data in
SSPSR is lost. Overflow can only occur in Slave mode. In Slave mode, the user must read the SSPBUF, even if
only transmitting data, to avoid setting overflow. In Master mode, the overflow bit is not set since each new recep-
tion (and transmission) is initiated by writing to the SSPBUF register (must be cleared in software).
0 = No overflow
In I²C mode:
1 = A byte is received while the SSPBUF register is still holding the previous byte. SSPOV is a “don’t care” in
Transmit mode (must be cleared in software).
0 = No overflow
bit 5
SSPEN: Synchronous Serial Port Enable bit
In both modes, when enabled, these pins must be properly configured as input or output
In SPI mode:
1 = Enables serial port and configures SCK, SDO, SDI and SS as the source of the serial port pins⁽²⁾
0 = Disables serial port and configures these pins as I/O port pins
In I²C mode:
1 = Enables the serial port and configures the SDA and SCL pins as the source of the serial port pins⁽³⁾
0 = Disables serial port and configures these pins as I/O port pins
bit 4
CKP: Clock Polarity Select bit
In SPI mode:
1 = Idle state for clock is a high level
0 = Idle state for clock is a low level
In I²C Slave mode:
SCL release control
1 = Enable clock
0 = Holds clock low (clock stretch). (Used to ensure data setup time.)
In I²C Master mode:
Unused in this mode
 2011 Microchip Technology Inc.
Preliminary
DS41575A-page 269