Panasonic MN101L Series

Chapter 8
8-bit Timer
8-bit Timer Cascade Connection VIII - 31
8.8 8-bit Timer Cascade Connection
8.8.1 Operation
16-bit timers in cascade connection are the combination of the following 8-bit timers.
Timer 0 connected with Timer 1, Timer 2 connected with Timer3 , or Timer 4 connected with Timer 5 operates as
a 16-bit timer in cascade connection.
• Timer 0 connected with Timer 1
• Timer 2 connected with Timer 3
• Timer 4 connected with Timer 5
In cascade connection, the timer corresponding to lower 8 bits of the 16-bit counter is grouped into "Type Timer
0" and the timer of upper 8 bits is grouped into "Type Timer 1".
Timer 0, Timer 2, and Timer 4 are Type Timer 0. Timer 1, Timer 3, and Timer 5 are Type Timer 1.
 Operation of 16-bit Timer Cascade Connection (Timer 0 connected with Timer 1, Timer 2 connected
connected with Timer 3, Timer 4 connected with Timer 5)
The timer functions in 16-bit cascade connection are listed in Table:8.8.1.
Table:8.8.1 Timer Functions in 16-bit Cascade Connection
Timer 0 to Timer 1 Timer 2 to Timer 3 Timer 4 to Timer 5
Interrupt source TM1IRQ TM3IRQ PERI0IRQ0
Event count
TM0IOA(P05)
TM0IOB(P03)
TM2IOA(P05)
TM2IOB(P02)
TM4IOA(P34)
TM4IOB(P01)
Timer output
TM1IOA(P55)
TM1IOB(P20)
TM3IOA(P56)
TM3IOB(P72)
TM5IOA(P21)
TM5IOB(P73)
PWM output - - -
Pulse width measurement
External interrupt 0
(IRQ0A/P10)
(IRQ0B/P60)
External interrupt 2
(IRQ2A/P80)
(IRQ2B/P62)
External interrupt 4
(IRQ4A/P14)
(IRQ4B/P72)
(IRQ4C/P12)
Clock source
HCLK
HCLK/4
HCLK/16
HCLK/32
HCLK/64
SYSCLK/2
SYSCLK/4
SCLK
TM0IO input
HCLK
HCLK/4
HCLK/16
HCLK/32
HCLK/64
SYSCLK/2
SYSCLK/4
SCLK
TM2IO input
HCLK
HCLK/4
HCLK/16
HCLK/32
HCLK/64
SYSCLK/2
SYSCLK/4
SCLK
TM4IO input
HCLK: Machine clock (for High speed oscillation)
SCLK: Machine clock (for Low speed oscillation)
SYSCLK: System clock [4.1 Clock Control]