NEC V850ES/KE1+ User Manual page 317

(a) 8-bit timer H mode register 0 (TMHMD0)
After reset: 00H
<7>
TMHMD0 TMHE0
TMHE0
0
1
CKSH02
0
0
0
0
1
1
Other than above
TMMD01
0
0
1
1
TOLEV0
0
1
TOEN0
0
1
Note Set so as to satisfy the following conditions.
= 4.0 to 5.5 V: Count clock ≤ 10 MHz
V
DD
= 2.7 to 4.0 V: Count clock ≤ 5 MHz
V
DD
Cautions 1. When the TMHE0 bit = 1, setting bits other than those of the TMHMD0 register is
prohibited.
2. In the PWM output mode and carrier generator mode, be sure to set the CMP01
register when starting the timer count operation (TMHE0 bit = 1) after the timer
count operation was stopped (TMHE0 bit = 0) (be sure to set again even if setting
the same value to the CMP01 register).
3. When using the carrier generator mode, set 8-bit timer H0 count clock frequency
to six times 8-bit timer/event counter 50 count clock frequency or higher.
CHAPTER 9 8-BIT TIMER H
R/W Address: FFFFF580H
6 5 4
CKSH02 CKSH01 CKSH00 TMMD01 TMMD00 TOLEV0
8-bit timer H0 operation enable
Stop timer count operation (8-bit timer counter H0 = 00H)
Enable timer count operation (Counting starts when clock is input)
CKSH01 CKSH00
Count clock
0 0 f
XX
0 1
f /2
XX
1 0 f /4
XX
1 1
f /16
XX
0 0 f /64
XX
0 1
f /1024
XX
TMMD00 8-bit timer H0 operation mode
0
Interval timer mode
1 Carrier generator mode
0
PWM output mode
1 Setting prohibited
Timer output level control (default)
Low level
High level
Timer output control
Disable output
Enable output
User's Manual U16896EJ2V0UD
3 2 <1>
Selection of count clock
f
Note f = 16.0 MHz
f = 20 MHz
XX XX
XX
Setting prohibited
Setting prohibited
125 ns
100 ns
250 ns
200 ns
μ
1 s
800 ns
μ
μ
4 s
3.2 s
μ μ
64 s
51.2 s
Setting prohibited
<0>
TOEN0
= 10.0 MHz
100 ns
200 ns
400 ns
μ
1.6 s
μ
6.4 s
μ
102.4 s
317