NEC 78K0S/KA1+ User Manual page 133

Figure 8-4. Format of 8-Bit Timer H Mode Register 1 (TMHMD1)
Address: FF70H
Symbol
TMHMD1 TMHE1
TMHE1
CKS12
TMMD11
Other than above
TOLEV1
TOEN1
Cautions 1. When TMHE1 = 1, setting the other bits of the TMHMD1 register is prohibited.
2. In the PWM output mode, be sure to set 8-bit timer H compare register 11 (CMP11) when
starting the timer count operation (TMHE1 = 1) after the timer count operation was stopped
(TMHE1 = 0) (be sure to set again even if setting the same value to the CMP11 register).
Remarks 1. f : Oscillation frequency of clock to peripheral hardware
XP
2. f : Low-speed internal oscillation clock oscillation frequency
RL
3. Figures in parentheses apply to operation at f
CHAPTER 8 8-BIT TIMER H1
After reset: 00H R/W
<7> 5
6
CKS12 CKS11
0
Stop timer count operation (counter is cleared to 0)
1
Enable timer count operation (count operation started by inputting clock)
CKS11 CKS10
0 0 0
0 0 1
0 1 0
0 1 1
1 0 0
1 0 1
Other than above
TMMD10
0 0
Interval timer mode
1 0 PWM output mode
Setting prohibited
Timer output level control (in default mode)
0
Low level
1 High level
0 Disable output
1 Enable output
User's Manual U16898EJ3V0UD
3 2
4
CKS10 TMMD11 TMMD10 TOLEV1
Timer operation enable
Count clock (f ) selection
CNT
f (10 MHz)
XP
2
f /2 (2.5 MHz)
XP
4
f /2 (625 kHz)
XP
6
(156.25 kHz)
f /2
XP
12
f /2 (2.44 kHz)
XP
7
f /2 (1.88 kHz (TYP.))
RL
Setting prohibited
Timer operation mode
Timer output control
= 10 MHz, f = 240 kHz (TYP.).
XP RL
<1> <0>
TOEN1
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