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User’s Manual U11969EJ3V0UM00
CHAPTER 1 INTRODUCTION
(9) Ports
The ports have functions as general ports and functions as control pins as shown below.
Port
I/O
Port Function
Control Function
Port0
8-bit I/O
General port
Timer I/O, external interrupt
Port1
Port2
1-bit input,
NMI, A/D converter trigger, external interrupt
6-bit I/O
Port3
7-bit I/O
Serial interface
Port4
8-bit I/O
External address/data bus
Port5
Port6
External address bus
Port7
8-bit input
A/D converter analog input
Port8
Port9
7-bit I/O
External bus interface control signal I/O
Port10
4-bit I/O
PWM output
Port11
8-bit I/O
Timer I/O, external interrupt
Port12
Serial interface
Port13
Real time output port
Port14
—
(10) PWM (Pulse Width Modulation)
The V854 is provided with four channels of PWM signal output for which the 12- to 16-bit resolutions can be
selected. The PWM output can be used as a D/A converter output by connecting an external low pass filter.
It is suitable for controlling the actuator of motors, etc.
(11) A/D converter
This is a high speed, high resolution 8-bit A/D converter with 16 analog input pins. Converts with a sequential
conversion method.
(12) RTP
Real time output function which transfers the 8-bit data previously set to output latch with the coincidence signal
of compare register. RTP can output data to port at the accurate timing specified with timer.
Summary of Contents for V854 UPD703006
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