NEC 78K0 User Manual page 236

Cautions 1. When the Ring-OSC clock is selected as the clock to be supplied to the CPU, the clock of the
Ring-OSC oscillator is divided and supplied as the count clock. If the count clock is the
Ring-OSC clock, the operation of 8-bit timer H0 is not guaranteed.
2. When TMHE0 = 1, setting the other bits of the TMHMD0 register is prohibited.
3. In the PWM output mode, be sure to set 8-bit timer H compare register 10 (CMP10) when
starting the timer count operation (TMHE0 = 1) after the timer count operation was stopped
(TMHE0 = 0) (be sure to set again even if setting the same value to the CMP10 register).
Remarks 1. f : X1 input clock oscillation frequency
X
2. Figures in parentheses apply to operation at f
236
CHAPTER 9 8-BIT TIMERS H0 AND H1
= 10 MHz
X
*
User's Manual U15947EJ2V0UD