HD64570 HITACHI [Hitachi Semiconductor], HD64570 Datasheet - Page 327

• Manufacturer Part Number: HD64570
• Description: Serial Communications Adaptor
• Manufacturer: HITACHI [Hitachi Semiconductor]

7.3.2
Figure 7.3 shows the timer output change timing. When the timer up-counter (TCNT) and the
timer constant register (TCONR) values match and TCNT is subsequently initialized to 0000H,
the CMF bit of the timer control/status register (TCSR) is set to 1, one
7.4
When the timer up-counter (TCNT) and the timer constant register (TCONR) values match, the
CMF bit of the timer control/status register (TCSR) is set to 1. Here, an interrupt is generated, if
enabled. (Interrupts initiated by the CMF bit are enabled or disabled by the ECMI bit of TCSR.)
Figure 7.4 shows interrupt timing.
TCNT
CMF
: Internal clock
TCNT = TCONR – 1
Output Timing
Interrupt
Figure 7.3 Timer Output Timing
TCNT = TCONR
1
CMF bit set (TCNT = 0000H)
Rev. 0, 07/98, page 311 of 453
TCNT = 0000H
clock cycle later.