1 overview, 1-1 functions – Panasonic MN101C77C User Manual
Page 216

Chapter 6 8-bit Timers
VI - 2
Overview
6-1
Overview
This LSI contains two general purpose 8-bit timers (Timers 0 and 1) and two 8-bit timers (Timers 4 and 5)
that can be also used as baud rate timer. The general purpose 8-bit timers can be used as 16-bit timers with
cascade connection.
Fosc or fs can be selected as the clock source for each timer by using the prescaler. Also, remote control
output circuit is built in.
6-1-1
Functions
Table 6-1-1 shows functions of each timer.
Table 6-1-1 Timer Functions
In a cascade connecion, timers 0, 4 and 5 form the "timer 0", or the lower 8 bits of 16-bit counter, and timers
1 form the "timer 1", or the upper 8 bits. Timers 4 and 5 cannot be cascaded.
Timer 0
Timer 1
Timer 4
Timer 5
(8 bit)
(8 bit)
(8 bit)
(8 bit)
Interrupt source
TM0IRQ
TM1IRQ
TM4IRQ
TM5IRQ
Timer operation
Event count
Timer puls e output
PWM output
-
Synchronous output
-
-
-
Serial transfer clock output
-
-
Puls e width meas urement
-
Cascade connection
-
-
Premote control carrier output
-
-
Clock s ource
fos c
fos c
fos c
fos c
fos c/4
fos c/4
fos c/4
fos c/4
fos c/16
fos c/16
fos c/16
fos c/16
fos c/32
fos c/64
fos c/32
fos c/32
fos c/64
fos c/128
fos c/64
fos c/64
fs/2
fs/2
fs/2
fs/2
fs/4
fs/8
fs/4
fs/4
fx
fx
fx
fx
TM0IO input
TM1IO input
TM4IO input
TM5IO input
-When timer 4 and 5 are used as a transfer clock for serial interface 1 function, it is not used
as a general timer.
fos c: Machine clock (High speed oscillation)
fx: Machine clock (Low s peed os cillation)
fs: System clock [ Chapter 2 2.5 Clock Switching]