PIC18F1XK22 Datasheet, PDF (155/388 Pages) Microchip Technology – 20-Pin Flash Microcontrollers with nanoWatt XLP Technology

PIC18F1XK22/LF1XK22
REGISTER 14-7: SSPADD: MSSP ADDRESS AND BAUD RATE REGISTER (I²C MODE)
R/W-0
ADD7
bit 7
R/W-0
ADD6
R/W-0
ADD5
R/W-0
ADD4
R/W-0
ADD3
R/W-0
ADD2
R/W-0
ADD1
R/W-0
ADD0
bit 0
Legend:
R = Readable bit
-n = Value at POR
W = Writable bit
‘1’ = Bit is set
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
x = Bit is unknown
Master mode:
bit 7-0
ADD<7:0>: Baud Rate Clock Divider bits
SCL pin clock period = ((ADD<7:0> + 1) *4)/FOSC
10-Bit Slave mode — Most Significant Address Byte:
bit 7-3
bit 2-1
bit 0
Not used: Unused for Most Significant Address Byte. Bit state of this register is a “don’t care.” Bit pat-
tern sent by master is fixed by I²C specification and must be equal to ‘11110’. However, those bits are
compared by hardware and are not affected by the value in this register.
ADD<9:8>: Two Most Significant bits of 10-bit address
Not used: Unused in this mode. Bit state is a “don’t care.”
10-Bit Slave mode — Least Significant Address Byte:
bit 7-0
ADD<7:0>: Eight Least Significant bits of 10-bit address
7-Bit Slave mode:
bit 7-1
bit 0
ADD<6:0>: 7-bit address
Not used: Unused in this mode. Bit state is a “don’t care.”
 2010 Microchip Technology Inc.
Preliminary
DS41365D-page 155