upd70f3017ay Renesas Electronics Corporation., upd70f3017ay Datasheet - Page 243

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

10.3.3
(1)
Since outputs from the serial clock line and the serial data bus line are N-ch open-drain outputs, an external pull-up
resistor is required.
Pin configuration
The serial clock pin (SCL) and serial data bus pin (SDA) are configured as follows.
SCL ................ This pin is used for serial clock input and output.
SDA ................ This pin is used for serial data input and output.
(Clock input)
I
Clock output
2
Data output
C bus mode functions
Data input
Master device
This pin is an N-ch open-drain output for both master and slave devices. Input is Schmitt input.
This pin is an N-ch open-drain output for both master and slave devices. Input is Schmitt input.
CHAPTER 10
Figure 10-7. Pin Configuration Diagram
SCL
SDA
User’s Manual U12768EJ4V1UD
SERIAL INTERFACE FUNCTION
V
V
DD
DD
SDA
SCL
Slave device
(Clock output)
Clock input
Data output
Data input
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