Table of Contents
Advertisement
I Details of Pins in Block Diagram
The 16-bit input/output timer has four input capture input pins.
The actual pin names and interrupt request numbers used in the input capture unit are shown in Table 7.2-1.
Table 7.2-1 Pins and Interrupt Request Numbers of 16-bit Input/Output Timer
G
Input capture data registers (IPCP0 to IPCP3)
The counter value of the 16-bit free-run timer actually read when the edge of the external signal input to the
input pins (IN0 to IN3) is detected is stored in the input capture data registers (IPC0 to IPC3)
corresponding to the input pins (IN0 to IN3).
G
Input capture control status registers (ICS01, ICS23)
The input capture control status registers start and stop the capture operation of each input capture, check
and clear the valid edge detection flag when the edge is detected, and enable or disable an interrupt. The
ICS01 register sets the input capture corresponding to the input pins IN0 and IN1, and the ICS23 register
sets the input capture corresponding to the input pins IN2 and IN3.
G
Edge detection circuit
The edge detection circuit detects the edge of the external signal input to the input pins.The detected edge
can be selected from among the rising edge, falling edge, and both edges.
Input Pin
IN0
IN1
IN2
IN3
Actual Pin Name
P10/IN0
P11/IN1
P12/IN2
P13/IN3
CHAPTER 7 16-bit I/O timer
Interrupt Request Number
#23(17
)
H
#25(19
)
H
#30(1E
)
H
225
Advertisement
Table of Contents
