PIC18F2331/2431/4331/4431
REGISTER 19-2: SSPCON: SYNCHRONOUS SERIAL PORT CONTROL REGISTER (CONTINUED)
bit 3-0
SSPM<3:0>: Synchronous Serial Port Mode Select bits(3)
0000= SPI Master mode, Clock = FOSC/4
0001= SPI Master mode, Clock = FOSC/16
0010= SPI Master mode, Clock = FOSC/64
0011= SPI Master mode, Clock = TMR2 output/2
0100= SPI Slave mode, Clock = SCK pin, SS pin control enabled
0101= SPI Slave mode, Clock = SCK pin, SS pin control disabled, SS can be used as I/O pin
0110= I2C Slave mode, 7-bit address
0111= I2C Slave mode, 10-bit address
1011= I2C Firmware Controlled Master mode (slave Idle)
1110= I2C Slave mode, 7-bit address with Start and Stop bit interrupts enabled
1111= I2C Slave mode, 10-bit address with Start and Stop bit interrupts enabled
Note 1: In Master mode, the overflow bit is not set since each new reception (and transmission) is initiated by
writing to the SSPBUF register.
2: When enabled, these pins must be properly configured as inputs or outputs.
3: Bit combinations not specifically listed here are either reserved or implemented in I2C™ mode only.
DS39616D-page 208
2010 Microchip Technology Inc.
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