UPD70F3201YGC-YEU-A Renesas Electronics America, UPD70F3201YGC-YEU-A Datasheet - Page 178

• Manufacturer Part Number: UPD70F3201YGC-YEU-A
• Description: MCU 32BIT I2C 100TQFP
• Manufacturer: Renesas Electronics America
• Series: V850ES/Sx2r

Specifications of UPD70F3201YGC-YEU-A

• Core Processor: RISC
• Core Size: 32-Bit
• Speed: 20MHz
• Connectivity: CSI, EBI/EMI, I²C, UART/USART
• Peripherals: DMA, PWM, WDT
• Number Of I /o: 68
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 2.2 V ~ 2.7 V
• Data Converters: A/D 12x10b; D/A 2x8b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

4.4
4.4.1
4.4.2
176
The operation of a port differs depending on whether the port is in the input or output mode, as described below.
(1) In output mode
(2) In input mode
(1) In output mode
(2) In input mode
Cautions
A value can be written to the output latch by using a transfer instruction. The contents of the output latch are
output from the pin. Once data has been written to the output latch, it is retained until new data is written to the
output latch.
A value can be written to the output latch by using a transfer instruction. Because the output buffer is off,
however, the status of the pin does not change.
Once data has been written to the output latch, it is retained until new data is written to the output latch.
Caution A 1-bit memory manipulation instruction manipulates 1 bit but accesses a port in 8-bit units.
The contents of the output latch can be read by using a transfer instruction. The contents of the output latch do
not change.
The status of the pin can be read by using a transfer instruction. The contents of the output latch do not
change.
Writing data to I/O port
Reading data from I/O port
If this instruction is executed to manipulate a port with a mixture of input and output bits, the
contents of the output latch of a pin set in the input mode, in addition to the bit to be
manipulated, become undefined.
CHAPTER 4 PORT FUNCTIONS
User’s Manual U15905EJ2V1UD