PIC16F7X Datasheet, PDF (62/174 Pages) Microchip Technology – 28/40-Pin 8-Bit CMOS FLASH Microcontrollers

PIC16F7X
REGISTER 9-1:
SSPSTAT: SYNC SERIAL PORT STATUS REGISTER (ADDRESS 94h)
R/W-0 R/W-0
R-0
SMP
CKE
D/A
bit 7
R-0
R-0
R-0
R-0
P
S
R/W
UA
R-0
BF
bit 0
bit 7
SMP: SPI Data Input Sample Phase bit
SPI Master mode:
1 = Input data sampled at end of data output time
0 = Input data sampled at middle of data output time (Microwire^®)
SPI Slave mode:
SMP must be cleared when SPI is used in Slave mode
I²C mode:
This bit must be maintained clear
bit 6
CKE: SPI Clock Edge Select bit (Figure 9-2, Figure 9-3, and Figure 9-4)
SPI mode, CKP = 0:
1 = Data transmitted on rising edge of SCK (Microwire^® alternate)
0 = Data transmitted on falling edge of SCK
SPI mode, CKP = 1:
1 = Data transmitted on falling edge of SCK (Microwire^® default)
0 = Data transmitted on rising edge of SCK
I²C mode:
This bit must be maintained clear
bit 5
D/A: Data/Address bit (I²C mode only)
1 = Indicates that the last byte received or transmitted was data
0 = Indicates that the last byte received or transmitted was address
bit 4
P: STOP bit (I²C mode only)
This bit is cleared when the SSP module is disabled, or when the START bit is detected last.
SSPEN is cleared.
1 = Indicates that a STOP bit has been detected last (this bit is ’0’ on RESET)
0 = STOP bit was not detected last
bit 3
S: START bit (I²C mode only)
This bit is cleared when the SSP module is disabled, or when the STOP bit is detected last.
SSPEN is cleared.
1 = Indicates that a START bit has been detected last (this bit is ’0’ on RESET)
0 = START bit was not detected last
bit 2
R/W: Read/Write bit Information (I²C mode only)
This bit holds the R/W bit information following the last address match. This bit is only valid from
the address match to the next START bit, STOP bit, or ACK bit.
1 = Read
0 = Write
bit 1
UA: Update Address bit (10-bit I²C mode only)
1 = Indicates that the user needs to update the address in the SSPADD register
0 = Address does not need to be updated
bit 0
BF: Buffer Full Status bit
Receive (SPI and I²C modes):
1 = Receive complete, SSPBUF is full
0 = Receive not complete, SSPBUF is empty
Transmit (I²C mode only):
1 = Transmit in progress, SSPBUF is full
0 = Transmit complete, SSPBUF is empty
Legend:
R = Readable bit
- n = Value at POR reset
W = Writable bit
’1’ = Bit is set
U = Unimplemented bit, read as ‘0’
’0’ = Bit is cleared x = Bit is unknown
DS30325B-page 60
 2002 Microchip Technology Inc.