p2125vps20 Renesas Electronics Corporation., p2125vps20 Datasheet - Page 267

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

11.5.2
A compare-match signal occurs at the last state when the FRC and OCR values match (at the
timing when the FRC updates the counter value). When a compare-match signal occurs, the level
selected by the OLVL bit in TOCR is output at the output compare output pin (FTOA or FTOB).
Figure 11.5 shows the timing of this operation for compare-match A.
11.5.3
FRC can be cleared when compare-match A occurs. Figure 11.6 shows the timing of this
operation.
FRC
OCRA
Compare-match
A signal
OLVLA
Output compare A
output pin FTOA
φ
Compare-match
A signal
FRC
φ
Output Compare Output Timing
FRC Clear Timing
Figure 11.6 Clearing of FRC by Compare-Match A Signal
Note : * Indicates instruction execution by software.
Figure 11.5 Timing of Output Compare A Output
N
N
N
N + 1
Clear*
Section 11 16-Bit Free-Running Timer (FRT)
Rev. 1.00 Sep. 21, 2006 Page 229 of 658
H'0000
N
N
N + 1
REJ09B0310-0100