UPD70F3738GF-GAS-AX Renesas Electronics America, UPD70F3738GF-GAS-AX Datasheet - Page 705

• Manufacturer Part Number: UPD70F3738GF-GAS-AX
• Description: MCU 32BIT V850ES/JX3-L 100-LQFP
• Manufacturer: Renesas Electronics America
• Series: V850ES/Jx3-Lr

Specifications of UPD70F3738GF-GAS-AX

• Core Processor: RISC
• Core Size: 32-Bit
• Speed: 20MHz
• Connectivity: CSI, EBI/EMI, I²C, UART/USART
• Peripherals: DMA, LVD, PWM, WDT
• Number Of I /o: 84
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 2.2 V ~ 3.6 V
• Data Converters: A/D 12x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

19.6 I
The transfer timing for the “start condition”, “address”, “transfer direction specification”, “data”, and “stop condition”
generated on the I
bit data).
pin’s low-level period can be extended and a wait state can be inserted (n = 0 to 2).
19.6.1 Start condition
The start condition for the SCL0n and SDA0n pins is a signal that the master device outputs to the slave device when
starting a serial transfer. The slave device can defect the start condition (n = 0 to 2).
bit = 1). When a start condition is detected, the IICSn.STDn bit is set (1) (n = 0 to 2).
The following section describes the I
The master device generates the start condition, slave address, and stop condition.
ACK can be generated by either the master or slave device (normally, it is generated by the device that receives 8-
The serial clock (SCL0n) is continuously output by the master device. However, in the slave device, the SCL0n
A start condition is met when the SCL0n pin is high level and the SDA0n pin changes from high level to low level.
A start condition is output when the IICCn.STTn bit is set (1) after a stop condition has been detected (IICSn.SPDn
Caution When the IICCn.IICEn bit of the V850ES/JG3-L is set to 1 while communications with other
2
C Bus Definitions and Control Methods
devices are in progress, the start condition may be detected depending on the status of the
communication line. Be sure to set the IICCn.IICEn bit to 1 when the SCL0n and SDA0n lines are
high level.
SDA0n
SCL0n
2
C bus’s serial data bus is shown below.
Start
condition
Address
1 to 7
Figure 19-7. I
SDA0n
SCL0n
2
C bus’s serial data communication format and the signals used by the I
R/W
8
Figure 19-8. Start Condition
H
User’s Manual U18953EJ5V0UD
ACK
CHAPTER 19 I
2
C Bus Serial Data Transfer Timing
9
1 to 8
Data
2
C BUS
ACK
9
1 to 8
Data
ACK
9
Stop
condition
2
C bus.
703