Single Master Iic Interface - Panasonic F77G User Manual

12-3-3

Single Master IIC Interface

IIC serial communication in single master is available at serial interface 3. Communication of this IIC
interface is based on the data transfer format of Philips, IIC-BUS.
Table 12-3-11 shows the functions of IIC serial interface.
Activation factor for Communication
Set data (at transmission) or dummy data (at reception) to the transmit/receive shift register SC3TRB.
Start condition and transfer clock are generated to start communication, regardless of transmission/
reception. This serial interface can not be used for slave communication.
Table 12-3-11 IIC Serial Interface Functions
Communication type
Interrupt
Pin
Transfer bit count
First transfer bit
ACK bit
ACK bit level
Clock source
The transfer rate is the clock source divided by 3.
Chapter 12
IIC (single master)
SC3IRQ
SDA, SCL
1 to 8 bit
fosc/2
fosc/4
fosc/16
fosc/32
fs/2
fs/4
timer 5 output
Serial Interface 3
XII - 27
Operation