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2
20 I
C
20.1 Configuration of the I
The S1C17704 equipped with an I
2
I
C module operates as a master using the clock supplied from the 16-bit timer Ch.2 (supports single master mode
only). It supports standard (100 kbps) and fast (400 kbps) modes, and 7-bit/10-bit slave addressing. The I
includes a noise remove function to secure reliable data transfer.
Also it can generate two types of interrupts (transmit buffer empty and receive buffer full interrupts), this makes it
possible to process continuous serial data transfer simply in an interrupt handler.
Figure 20.1.1 shows the structure of the I
Internal bus
ITC
2
I
C clock
(from 16-bit timer Ch.2)
2
Note: The I
C module does not have a clock stretch function. Therefore, it does not support I
devices that use clock stretch for synchronization of data communication.
S1C17704 TECHNICAL MANUAL
2
C
2
C bus interface module for high-speed synchronous serial communication. This
2
C module.
Bus I/F
and
control
registers
Clock/transfer control
Interrupt
control
Figure 20.1.1 Structure of I
EPSON
Shift register
Noise
filter
Shift register
2
C Module
2
20 I
C
2
C module
SDA
SCL
2
I
C
2
C slave
20-1
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