HD64F2145 Datasheet, PDF (341/829 Pages) Renesas Technology Corp – Hitachi 16-Bit Single-Chip Microcomputer

Bit
Bit Name Initial Value R/W Description
4
ICST
0
R/W 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. 2.0, 08/02, page 301 of 788