p2125vps20 Renesas Electronics Corporation., p2125vps20 Datasheet - Page 330

• Manufacturer Part Number: p2125vps20
• Description: 16-bit Single-chip Microcomputer H8s Family / H8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

Section 13 8-Bit Timer (TMR)
13.7.3
TMR_X has input capture registers (TICRR and TICRF). A narrow pulse width can be measured
with TICRR and TICRF, using a single capture. If the falling edge of TMRIX (TMR_X input
capture input signal) is detected after its rising edge has been detected, the value of TCNT_X at
that time is transferred to both TICRR and TICRF.
(1)
Figure 13.11 shows the timing of the input capture operation.
If the input capture signal is input while TICRR and TICRF are being read, the input capture
signal is delayed by one system clock (φ) cycle. Figure 13.12 shows the timing of this operation.
Rev. 1.00 Sep. 21, 2006 Page 292 of 658
REJ09B0310-0100
φ
TMRIX
Input capture
signal
TCNT_X
TICRR
TICRF
Input Capture Signal Input Timing
Input Capture Operation
Figure 13.11 Timing of Input Capture Operation
M
m
n
n
n + 1
m
n
N
N
N + 1