HD6437101 RENESAS [Renesas Technology Corp], HD6437101 Datasheet - Page 196

• Manufacturer Part Number: HD6437101
• Description: 32-Bit RISC Microcomputer
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 8 Multifunction Timer Pulse Unit (MTU)
Input Capture Function
The TCNT value can be transferred to TGR on detection of the TIOC pin input edge.
Rising edge, falling edge, or both edges can be selected as the detected edge. For channels 0 and 1,
it is also possible to specify another channel's counter input clock or compare match signal as the
input capture source.
Note: When another channel's counter input clock is used as the input capture input for channels
Example of Input Capture Operation Setting Procedure: Figure 8.9 shows an example of the
input capture operation setting procedure.
Rev.1.00 Sep. 18, 2008 Page 162 of 522
REJ09B0069-0100
H'FFFF
TGRB
TGRA
H'0000
TIOCB
TIOCA
0 and 1, φ/1 should not be selected as the counter input clock used for input capture input.
Input capture will not be generated if φ/1 is selected.
TCNT value
Figure 8.9 Example of Input Capture Operation Setting Procedure
<Input capture operation>
Select input capture input
Input selection
Start count
Figure 8.8 Example of Toggle Output Operation
Counter cleared by TGRB compare match
[1]
[2]
[1] Designate TGR as an input capture
[2] Set the CST bit in TSTR to 1 to start
register by means of TIOR, and select
rising edge, falling edge, or both edges
as the input capture source and input
signal edge.
the count operation.
Toggle output
Toggle output
Time