UPD78F0034BGC-8BS-A Renesas Electronics America, UPD78F0034BGC-8BS-A Datasheet - Page 340

• Manufacturer Part Number: UPD78F0034BGC-8BS-A
• Description: MCU 8-Bit 78K0 CISC 32KB Flash 2.5V/3.3V/5V 64-Pin LQFP
• Manufacturer: Renesas Electronics America

Specifications of UPD78F0034BGC-8BS-A

• Package: 64LQFP
• Family Name: 78K0
• Maximum Speed: 12 MHz
• Ram Size: 1 KB
• Program Memory Size: 32 KB
• Operating Supply Voltage: 2.5|3.3|5 V
• Data Bus Width: 8 Bit
• Program Memory Type: Flash
• Number Of Programmable I/os: 51
• Interface Type: 3-Wire/UART
• On-chip Adc: 8-chx10-bit
• Operating Temperature: -40 to 85 °C
• Number Of Timers: 3

18.1 Functions of Serial Interface IIC0
(1) Operation stop mode
(2) I
338
CHAPTER 18 SERIAL INTERFACE IIC0 ( PD780024AY, 780034AY SUBSERIES ONLY)
Serial interface IIC0 has the following two modes.
Figure 18-1 shows a block diagram of serial interface IIC0.
This mode is used when serial transfers are not performed. It can therefore be used to reduce power consumption.
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.
The transfer rate is as follows.
• 97.5 kHz (standard mode) or 350 kHz (high-speed mode): When operated at f
This mode complies with the I
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, the IIC0 requires pull-up resistors for the serial clock line (SCL0)
and the serial data bus line (SDA0).
2
C bus mode (multimaster supported)
2
C bus format and can output “start condition”, “data”, and “stop condition” data
User’s Manual U14046EJ5V0UD
X
= 8.38 MHz