Timer 4; Features (Timer 4); Function Overview (Timer 4) - NEC UPD703116 User Manual

9.5 Timer 4

9.5.1 Features (timer 4)

Timer 4 (TM4) functions as a 16-bit interval timer.

9.5.2 Function overview (timer 4)

•
16-bit interval timer: 1 channel
•
Compare register: 1
•
Count clock selected from divisions of internal system clock (set the frequency of the count clock to 16 MHz or
less)
•
Base clock (f ): 1 type (set f
CLK
f /2
XX
•
Prescaler division ratio
The following division ratios can be selected according to the base clock (f
Division Ratio
•
Interrupt request source: 1
• Compare match interrupt
INTCM4 generated with CM4 match signal
•
Timer clear
TM4 register can be cleared by CM4 register match.
Remark f : Internal system clock
XX
CHAPTER 9 TIMER/COUNTER FUNCTION
to 32 MHz or less)
CLK
Base Clock (f
1/2 f
XX
1/4 f
XX
1/8 f
XX
1/16 f
XX
1/32 f
XX
1/64 f /128
XX
1/128 f /256
XX
1/256 f /512
XX
User's Manual U14492EJ5V0UD
CLK
)
CLK
/4
/8
/16
/32
/64
).
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