PIC16C72-04SLASHSS datasheet(78/288 Pages) MICROCHIP

78 / 288 page

PIC16C7X

DS30390E-page 78

11.2

SPI Mode for PIC16C72/73/73A/74/74A

This section contains register deﬁnitions and opera-

tional characteristics of the SPI module for the

PIC16C72,

PIC16C73,

PIC16C73A,

PIC16C74,

PIC16C74A.

FIGURE 11-1: SSPSTAT: SYNC SERIAL PORT STATUS REGISTER (ADDRESS 94h)

U-0

R-0

—

D/A

R/W

R = Readable bit

W = Writable bit

U = Unimplemented bit,

read as ‘0’

- n =Value at POR reset

bit7

bit0

bit 7-6:

Unimplemented: Read as '0'

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, 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, 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 valid from the address

match to the next start bit, stop bit, or ACK bit.

1 = Read

0 = Write

bit 1:

UA: Update Address (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

Applicable Devices

72 73 73A 74 74A 76 77

PIC16C72-04/SS Datasheet(PDF) 78 Page - Microchip Technology

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