upd78f0730 Renesas Electronics Corporation., upd78f0730 Datasheet - Page 209
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upd78f0730
Manufacturer Part Number
upd78f0730
Description
8-bit Single-chip Microcontroller
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.UPD78F0730.pdf
(518 pages)
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(TOLEV1 = 0)
<1> The count operation is enabled by setting TMHE1 = 1. Start 8-bit timer counter H1 by masking one count
<2> The CMP11 register value can be changed during timer counter operation. This operation is asynchronous
<3> When the values of 8-bit timer counter H1 and the CMP01 register match, the value of 8-bit timer counter H1
<4> If the CMP11 register value is changed, the value is latched and not transferred to the register. When the
<5> When the values of 8-bit timer counter H1 and the CMP11 register after the change match, the TOH1 output
<6> Clearing the TMHE1 bit to 0 during timer H1 operation makes the INTTMH1 signal and TOH1 output default.
Count clock
counter H1
8-bit timer
INTTMH1
CMP01
CMP11
TMHE1
TOH1
clock to count up. At this time, the TOH1 output remains default.
to the count clock.
is cleared, the TOH1 output level is inverted, and the INTTMH1 signal is output.
values of 8-bit timer counter H1 and the CMP11 register before the change match, the value is transferred to
the CMP11 register and the CMP11 register value is changed (<2>’).
However, three count clocks or more are required from when the CMP11 register value is changed to when
the value is transferred to the register. If a match signal is generated within three count clocks, the changed
value cannot be transferred to the register.
level is inverted. 8-bit timer counter H1 is not cleared and the INTTMH1 signal is not generated.
00H 01H 02H
<1>
(e) Operation by changing CMP11 (CMP11 = 02H → 03H, CMP01 = A5H)
02H
Figure 8-10. Operation Timing in PWM Output Mode (4/4)
80H
<2>
Preliminary User’s Manual U19014EJ1V0UD
A5H 00H 01H 02H 03H
CHAPTER 8 8-BIT TIMER H1
02H (03H)
<3>
<2>’
<4>
A5H
03H
A5H 00H 01H 02H 03H
<5>
A5H 00H
<6>
209
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