HD64336900G Datasheet, PDF (255/408 Pages) Renesas Technology Corp – 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Tiny Series

Vcc Vcc
SCL
SCL
SCL in
out
SDA in
out
SDA
(Master)
SCL in
out
SCL in
out
SDA
SDA in
out
SDA in
out
(Slave 1)
(Slave 2)
Figure 15.2 External Circuit Connections of I/O Pins
15.2 Input/Output Pins
Table 15.1 summarizes the input/output pins used by the I²C bus interface 2.
Table 15.1 Pin Configuration
Name
Serial clock
Serial data
Abbreviation
I/O
SCL
I/O
SDA
I/O
Function
I²C serial clock input/output
I²C serial data input/output
15.3 Register Descriptions
The I²C bus interface 2 has the following registers.
• I²C bus control register 1 (ICCR1)
• I²C bus control register 2 (ICCR2)
• I²C bus mode register (ICMR)
• I²C bus interrupt enable register (ICIER)
• I²C bus status register (ICSR)
• I²C bus slave address register (SAR)
• I²C bus transmit data register (ICDRT)
• I²C bus receive data register (ICDRR)
• I²C bus shift register (ICDRS)
Rev. 1.00, 11/03, page 227 of 376