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Chapter 6 8-bit Timers
Cascade Connection
6-10 Cascade Connection
6-10-1 Operation
Cascading timers 0 and 1 form a 16-bit timer.
8-bit Timer Cascade Connection Operation (Timer 0 + Timer 1)
Timer 0 and timer 1 are combined to be a 16-bit timer. Cascading timer is operated at clock source of timer
0 which is lower 8 bits.
Table 6-10-1 Timer Functions at Cascade Connection
Timer0+Timer1
(16 Bit)
Interrupt source TM1IRQ
Timer operation
√
Event count
√
(TM0IO input)
Timer pulse output
√
(TM1IO output)
PWM output
-
Synchronous output
√
Serial Interface transfer
clock output
-
Pulse width measurement
√
Remote control carrier
output
-
Clock source
fosc
fosc/4
fosc/16
fosc/32
fosc/64
fs/2
fs/4
fx
TM0IO input
fosc : Machine clock (High speed oscillation )
fx : Machine clock (Low speed oscillation )
fs : System clock
[ Chapter 2 2-5 Clock Switching ]