HD6432160 RENESAS [Renesas Technology Corp], HD6432160 Datasheet - Page 374
HD6432160
Manufacturer Part Number
HD6432160
Description
Hitachi 16-Bit Single-Chip Microcomputer
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.HD6432160.pdf
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14.4.2
When the WDT is used as an interval timer, an interval timer interrupt (WOVI) is generated each
time the TCNT overflows, as shown in figure 14.3. Therefore, an interrupt can be generated at
intervals.
When the TCNT overflows in interval timer mode, an interval timer interrupt (WOVI) is requested
at the same time the OVF bit of TCSR is set to 1. The timing is shown figure 14.4.
Rev. 2.0, 08/02, page 334 of 788
WOVI : Internal timer interrupt request occurrence
H'FF
H'00
Interval Timer Mode
TCNT value
ø
TCNT
Overflow signal
(internal signal)
OVF
WT/
TME = 1
= 0
Figure 14.3 Interval Timer Mode Operation
Overflow
Figure 14.4 OVF Flag Set Timing
WOVI
H'FF
Overflow
WOVI
Overflow
WOVI
H'00
Overflow
WOVI
Time
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