upd70f3017ay Renesas Electronics Corporation., upd70f3017ay Datasheet - Page 228

• Manufacturer Part Number: upd70f3017ay
• Description: V850/sa1tm 32-/16-bit Single-chip Microcontroller
• Manufacturer: Renesas Electronics Corporation.

10.3 I
The products that incorporate I
µ
I
• Operation stop mode
• I
(1)
(2)
228
2
C has the following two modes.
PD703014AY, 703014BY, 703015AY, 703015BY, 703017AY, 70F3015BY, 70F3017AY
To use the I
2
C (Inter IC) bus mode (multi-masters supported)
Operation stop mode
This mode is used when serial transfers are not performed.
consumption.
I
This mode is used for 8-bit data transfers with several devices via two lines: a serial clock (SCL) line and a serial
data bus (SDA) line.
This mode complies with the I
condition” data to the slave device, via the serial data bus. The slave device automatically detects these
received data by hardware. This function can simplify the part of an application program that controls the I
bus.
Since SCL and SDA are open-drain outputs, the I
serial data bus line.
2
C bus mode (multi-masters supported)
2
C Bus Interface (I
2
C bus function, set the P10/SDA and P12/SCL pins to N-ch open-drain output.
2
C)
2
C are shown below.
2
CHAPTER 10
C bus format and the master device can output “start condition”, “data”, and “stop
User’s Manual U12768EJ4V1UD
SERIAL INTERFACE FUNCTION
2
C requires pull-up resistors for the serial clock line and the
It can therefore be used to reduce power
2
C