CHAPTER 7 16-BIT TIMER/EVENT COUNTERS 00 AND 01
Preliminary User’s Manual U17260EJ3V1UD
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7.6 Cautions for 16-Bit Timer/Event Counters 00 and 01
(1) Restrictions for each channel of 16-bit timer/event counter 0n
Table 7-5 shows the restrictions for each channel.
Table 7-5. Restrictions for Each Channel of 16-Bit Timer/Event Counter 0n
Operation Restriction
As interval timer
As square wave output
−
As external event counter
TOC0n = 00H
As clear & start mode entered by
TI00n pin valid edge input
Using timer output (TO0n) is prohibited when detection of the valid edge of the TI01n pin is
used.
TOC0n = 00H
As free-running timer
−
As PPG output
Setting identical values or 0000H to CR00n and CP01n is prohibited.
As one-shot pulse output
−
As pulse width measurement
TOC0n = 00H
(2) Timer start errors
An error of up to one clock may occur in the time required for a match signal to be generated after timer start.
This is because counting TM0n is started asynchronously to the count pulse.
Figure 7-60. Start Timing of TM0n Count
0000H
Timer start
0001H
0002H
0003H
0004H
Count pulse
TM0n count value
(3) Setting of CR00n and CR01n (clear & start mode entered upon a match between TM0n and CR00n)
Set a value other than 0000H to CR00n and CR01n (TM0n cannot count one pulse when it is used as an external
event counter).
Remark
n = 0:
µ
PD78F0531, 78F0532, 78F0533
n = 0, 1:
µ
PD78F0534, 78F0535, 78F0536, 78F0537, 78F0537D