h8s-2169 Renesas Electronics Corporation., h8s-2169 Datasheet - Page 399

• Manufacturer Part Number: h8s-2169
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

12.3.6
TMRX has input capture registers of TICR, TICRR and TICRF.
Narrow pulse width can be measured with TICRR and TICRF, using capture operation controlled
by the ICST bit in the TCONRI register of the timer connection.
When TMRIX detects rising edge and falling edge successively after the ICST bit is set to 1, the
value of TCNT at the time is transferred to TICRR and TICRF, respectively.
Input signal to TMRIX can be switched by the setting of the other bits in TCONRI register.
(1) Input capture signal input timing
TMRIX
Input capture
signal
TCNTX
TICRR
TICRF
Timing of the input capture operation is shown in figure 12.9.
If input capture signal is input while TICRR and TICRF is read, the input capture signal delays
by one system clock ( ) period internally. Figure 12.10 shows the timing of this operation.
Input Capture Operation
Figure12.9 Timing of Input Capture Operation
M
m
n
n
n + 1
Rev. 3.00 Jan 18, 2006 page 371 of 1044
m
n
N
Section 12 8-Bit Timers
N
REJ09B0280-0300
N + 1