NEC 78K0S/KA1+ Preliminary User's Manual page 129

www.DataSheet4U.com
www.DataSheet4U.com
Cautions 1. When TMHE1 = 1, setting the other bits of the TMHMD1 register is prohibited.
Remarks 1. f
Figure 8-4. Format of 8-Bit Timer H Mode Register 1 (TMHMD1)
Address: FF70H After reset: 00H
<7>
Symbol 6
TMHMD1 TMHE1 CKS12
TMHE1
0 Stop timer count operation (counter is cleared to 0)
1 Enable timer count operation (count operation started by inputting clock)
CKS12 CKS11
0 0
0 0
0 1
0 1
1 0
1 0
Other than above
TMMD11 TMMD10
0 0
1 0
Other than above
TOLEV1
0 Low level
1
High level
TOEN1
0 Disable output
1
Enable output
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).
: Oscillation frequency of clock to peripheral hardware
XP
2. f : Low-speed Ring-OSC clock oscillation frequency
RL
3. Figures in parentheses apply to operation at f
Preliminary User's Manual U16898EJ1V0UD
CHAPTER 8 8-BIT TIMER H1
R/W
5 3
4
CKS11 CKS10 TMMD11 TMMD10 TOLEV1
Timer operation enable
CKS10 Count clock (f
0
f (10 MHz)
XP
1
2
f /2 (2.5 MHz)
XP
0 4
f /2 (625 kHz)
XP
1 6
f /2 (156.25 kHz)
XP
0
12
f /2 (2.44 kHz)
XP
1 7
f /2 (1.88 kHz (TYP.))
RL
Setting prohibited
Timer operation mode
Interval timer mode
PWM output mode
Setting prohibited
Timer output level control (in default mode)
Timer output control
= 10 MHz, f
XP
2 <1> <0>
TOEN1
) selection
CNT
= 240 kHz (TYP.).
RL
129