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User’s Manual U15798EJ2V0UD
CHAPTER 17 SERIAL INTERFACE IIC0 (
µ
PD780344Y, 780354Y SUBSERIES ONLY)
17.1 Functions of Serial Interface IIC0
Serial interface IIC0 has the following two modes.
(1) Operation stop mode
This mode is used when serial transfers are not performed. It can therefore be used to reduce power consumption.
(2) I
2
C bus mode (multimaster supported)
This mode is used for 8-bit data transfers with several devices via two lines: a serial clock (SCL0) line and a
serial data bus (SDA0) line.
This mode complies with the I
2
C bus format and can output “start condition”, “data”, and “stop condition” data
segments when transmitting via the serial data bus. These data segments are automatically detected by hardware
during reception.
Since SCL0 and SDA0 are open-drain outputs, IIC0 requires pull-up resistors for the serial clock line (SCL0) and
the serial data bus line (SDA0).
Содержание mPD780344 Series
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