h8s-2158 Renesas Electronics Corporation., h8s-2158 Datasheet - Page 353

• Manufacturer Part Number: h8s-2158
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

12.5.2
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 pin (FTOA or FTOB). Figure
12.5 shows the timing of this operation for compare-match A.
12.5.3
FRC can be cleared when compare-match A occurs. Figure 12.6 shows the timing of this
operation.
FRC
OCRA
Compare-match
A signal
OLVLA
Output compare A
output pin FTOA
Compare-match
A signal
FRC
FRC Clear Timing
Output Compare Output Timing
Figure 12.6 Clearing of FRC by Compare-Match A Signal
Note: * Indicates instruction execution by software.
Figure 12.5 Timing of Output Compare A Output
N
N
N
N + 1
Section 12 16-Bit Free-Running Timer (FRT)
Rev. 3.00 Jan 25, 2006 page 301 of 872
Clear *
H'0000
N
REJ09B0286-0300
N
N + 1