upd78f0730 Renesas Electronics Corporation., upd78f0730 Datasheet - Page 214

• Manufacturer Part Number: upd78f0730
• Description: 8-bit Single-chip Microcontroller
• Manufacturer: Renesas Electronics Corporation.

214
<1> When TMHE1 = 0 and TCE51 = 0, the 8-bit timer counter H1 operation is stopped.
<2> When TMHE1 = 1 is set, 8-bit timer counter H1 starts a count operation. At that time, the carrier clock
<3> When the count value of 8-bit timer counter H1 matches the CMP01 register value, the first INTTMH1 signal
<4> When the count value of 8-bit timer counter H1 matches the CMP11 register value, the INTTMH1 signal is
<5> When the INTTM51 signal is generated, it is synchronized with the 8-bit timer H1 count clock and is output as
<6> The INTTM5H1 signal becomes the data transfer signal for the NRZB1 bit, and the NRZB1 bit value is
<7> When NRZ1 = 0 is set, the TOH1 output becomes low level.
remains default.
is generated, the carrier clock signal is inverted, and the compare register to be compared with 8-bit timer
counter H1 is switched from the CMP01 register to the CMP11 register. 8-bit timer counter H1 is cleared to
00H.
generated, the carrier clock signal is inverted, and the compare register to be compared with 8-bit timer
counter H1 is switched from the CMP11 register to the CMP01 register. 8-bit timer counter H1 is cleared to
00H. By performing procedures <3> and <4> repeatedly, a carrier clock with duty fixed to 50% is generated.
the INTTM5H1 signal.
transferred to the NRZ1 bit.
8-bit timer counter
TM51 count value
H1 count value
8-bit timer H1
Carrier clock
8-bit timer 51
Carrier clock
count clock
count clock
INTTM5H1
INTTM5n1
INTTMH1
TMHE11
CMP01
CMP11
NRZB1
TCE51
TOH11
NRZ1
CR51
Figure 8-13. Carrier Generator Mode Operation Timing (1/3)
<1><2>
00H
00H 01H
0
(a) Operation when CMP01 = N, CMP11 = N
Preliminary User’s Manual U19014EJ1V0UD
0
N 00H
CHAPTER 8 8-BIT TIMER H1
<3>
K
K 00H 01H
1
<5>
N 00H
<4>
1
<6>
L
L 00H 01H
0
<7>
N 00H
N
N
0
N 00H
M 00H 01H
M
1
1
N 00H
N
0
00H 01H
N
0
N