Renesas H8S/2158 User Manual page 403

Bit Bit Name
4 ICST
Legend:
X: Don't care
Initial Value R/W
0 R/W
Description
Input Capture Start Bit
The TMR_X external reset input (TMRIX) is
connected to the IHI signal. TMR_X has input
capture registers (TICR, TICRR, and TICRF). TICRR
and TICRF can measure the width of a pulse by
means of a single capture operation under the
control of the ICST bit. When a rising edge followed
by a falling edge is detected on TMRIX after the
ICST bit is set to 1, the contents of TCNT at those
points are captured into TICRR and TICRF,
respectively, and the ICST bit is cleared to 0.
[Clearing condition]
•
When a rising edge followed by a falling edge is
detected on TMRIX
[Setting condition]
•
When 1 is written in ICST after reading ICST = 0
Rev. 3.00 Jan 25, 2006 page 349 of 872
Section 14 Timer Connection
REJ09B0286-0300