p2125vps20 Renesas Electronics Corporation., p2125vps20 Datasheet - Page 292

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

Section 12 16-Bit Cycle Measurement Timer (TCM)
(2)
The value in TCMCNT is transferred to TCMICR by detecting input edge of TCMCYI pin in
timer mode. At this time, the ICPF flag in TCMCSR is set. Detection of rising or falling edges is
selectable. Figure 12.4 shows an example of the timing of input capture operations and figure 12.5
shows buffer operation of input capture.
Rev. 1.00 Sep. 21, 2006 Page 254 of 658
REJ09B0310-0100
Input Capture
φ
TCMCYI
Input
capture signal
TCMCNT
TCMICR
TCMICRF
φ
TCMCYI
Input
capture signal
TCMCNT
TCMICR
ICPF
Figure 12.4 Input Capture Operation Timing (Sensing of Rising Edges)
N - 1
Figure 12.5 Buffer Operation of Input Capture
N - 1
M
M
L
N
N
Capture is generated
N
M
N
N + 1
K
K
N
K + 1
N + 2