h8s-2138 Renesas Electronics Corporation., h8s-2138 Datasheet - Page 380
h8s-2138
Manufacturer Part Number
h8s-2138
Description
Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.H8S-2138.pdf
(1061 pages)
- Current page: 380 of 1061
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Section 12 8-Bit Timers
12.3.2
Setting of Compare-Match Flags A and B (CMFA, CMFB): The CMFA and CMFB flags in
TCSR are set to 1 by a compare-match signal generated when the TCOR and TCNT values match.
The compare-match signal is generated at the last state in which the match is true, just before the
timer counter is updated.
Therefore, when TCOR and TCNT match, the compare-match signal is not generated until the
next incrementation clock input. Figure 12.4 shows this timing.
Rev. 4.00 Jun 06, 2006 page 326 of 1004
REJ09B0301-0400
External clock
input pin
TCNT input
clock
TCNT
TCNT
TCOR
Compare-match
signal
CMF
Compare-Match Timing
Figure 12.3 Count Timing for External Clock Input
N – 1
Figure 12.4 Timing of CMF Setting
N
N
N
N + 1
N + 1
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