UPD78F0838 Renesas Electronics Corporation., UPD78F0838 Datasheet - Page 474

• Manufacturer Part Number: UPD78F0838
• Description: 8-bit Single-chip Microcontrollers
• Manufacturer: Renesas Electronics Corporation.

14.4 I
14.4.1 Pin configuration
resistor is required.
472
The serial clock pin (SCL0) and serial data bus pin (SDA0) are configured as follows.
(1) SCL0....... This pin is used for serial clock input and output.
(2) SDA0 ...... This pin is used for serial data input and output.
Since outputs from the serial clock line and the serial data bus line are N-ch open-drain outputs, an external pull-up
2
C Bus Mode Functions
Clock output
(Clock input)
Data output
Data input
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.
Master device
V
V
SS
SS
Figure 14-11. Pin Configuration Diagram
CHAPTER 14 SERIAL INTERFACE IIC0
Preliminary User’s Manual U19748EJ1V0UD
SCL0
SDA0
V
V
DD
DD
SCL0
SDA0
V
V
SS
SS
Slave device
(Clock output)
Clock input
Data output
Data input