upd78f0730 Renesas Electronics Corporation., upd78f0730 Datasheet - Page 202

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

202
8-bit timer counter H1
<1> The count operation is enabled by setting the TMHE1 bit to 1. The count clock starts counting no more than
<2> When the value of 8-bit timer counter H1 matches the value of the CMP01 register, the value of the timer
<3> If the TMHE1 bit is cleared to 0 while timer H is operating, the INTTMH1 signal and TOH1 output are set to
Remark 01H ≤ N ≤ FEH
Count clock
1 clock after the operation is enabled.
counter is cleared, and the level of the TOH1 output is inverted. In addition, the INTTMH1 signal is output at
the rising edge of the count clock.
the default level. If they are already at the default level before the TMHE1 bit is cleared to 0, then that level
is maintained.
INTTMH1
TMHE1
CMP01
TOH1
Figure 8-8. Timing of Interval Timer/Square-Wave Output Operation (1/2)
<1>
00H
Count start
(a) Basic operation (Operation When 01H ≤ CMP01 ≤ FEH)
01H
Preliminary User’s Manual U19014EJ1V0UD
CHAPTER 8 8-BIT TIMER H1
match interrupt occurrence,
8-bit timer counter H1 clear
Level inversion,
N
N
<2>
Clear
00H
01H
Interval time
match interrupt occurrence,
8-bit timer counter H1 clear
Level inversion,
N
<2>
Clear
00H
01H 00H
<3>