HD6475328-CP10 HITACHI [Hitachi Semiconductor], HD6475328-CP10 Datasheet - Page 231

• Manufacturer Part Number: HD6475328-CP10
• Description: original Hitachi CMOS microcomputer unit (MCU)
• Manufacturer: HITACHI [Hitachi Semiconductor]

11.3.2 Compare Match Timing
Setting of Compare-Match Flags A and B (CMFA and CMFB): The compare-match flags are
set to “1” by an internal compare-match signal generated when the timer count matches the time
constant in TCORA or TCORB. The compare-match signal is generated at the last state in which
the match is true, just before the timer counter increments to a new value.
Accordingly, when the timer count matches one of the time constants, the compare-match signal is
not generated until the next period of the clock source. Figure 11-3 shows the timing of the
setting of the compare-match flags.
ø
External clock
source
TCNT clock
pulse
TCNT
External clock
source
TCNT clock
pulse
TCNT
Ø
Figure 11-2 Count Timing for External Clock Input
N – 1
215
N
N + 1