UPD784026 Renesas Electronics Corporation., UPD784026 Datasheet - Page 134

• Manufacturer Part Number: UPD784026
• Description: 16/8-bit Single-chip Microcontrollers
• Manufacturer: Renesas Electronics Corporation.

5.3 PORT 1
register (PM1). Each pin incorporates a programmable pull-up resistor. This port has direct LED drive capability.
pins. The operating mode can be specified bit-wise by means of the PWM control register (PWMC) and the port 1 mode control
register (PMC1), as shown in Table 5-3. The level of any pin can be read and tested at any time irrespective of the dual-function
pin operation.
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P10
P11
P12
P13
P14
P15-P17
Port 1 is an 8-bit input/output port with an output latch. Input/output can be specified bit-wise by means of the port 1 mode
In addition to their input/output port function, P10 to P14 also have a dual function as PWM output pins and serial interface
When RESET is input, port 1 is set as an input port (output high-impedance state), and the output latch contents are undefined.
Pin Name
I/O port
Port Mode
PWM0 output
PWM1 output
ASCK2 I/O/SCK2 I/O
RxD2 input/SI2 input
TxD2 output/SO2 output
Control Signal I/O Mode
Table 5-3 Port 1 Operating Modes
CHAPTER 5 PORT FUNCTIONS
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Setting of EN0 bit of PWMC to 1
Setting of EN1 bit of PWMC to 1
Setting PMC12 bit of PMC1 to 1
Setting PMC13 bit of PMC1 to 1
Setting PMC14 bit of PMC1 to 1
Operation to Operate Control Pin
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