Lucent Technologies MN10285K - Manual (Page 80)

Timers
8-Bit Timer Block Diagrams
MN102H75K/F75K/85K/F85K LSI User Manual Panasonic Semiconductor Development Company
79
Panasonic
4.3 8-Bit Timer Block Diagrams
Figure 4-3 Timer 0 Block Diagram
Figure 4-4 Timer 1 Block Diagram
(FE10)
(FE00)
TM0MD
(FE20)
B OSC /4
B OSC /64
B OSC /412
TM0I pin
Multiplexer
0
1
2
3
Timer 0
underflow
interrupt
Underflow
Reload
Timer 0 base register
TM0BR
TM0LD TM0EN TM0S0 TM0S1
Load
Count
8
Timer 0 binary counter
TM0BC
8 8
Data bus
8
1/2
Reset
P2MD7,P2DIR7 setting
TM0O pin
(FE11)
(FE01)
TM1MD
(FE21)
0
1
2
3
Underflow
Reload
Timer 1 base register
TM1BR
TM1LD TM1EN TM1S0 TM1S1
Load
Count
8
Timer 1 binary counter
TM1BC
8 8 8
Data bus
B OSC /4
B OSC /64
Cascade from timer 0
TM1I pin
Multiplexer
Timer 1
underflow
interrupt
1/2
P4MD1,P4DIR1 setting
TM1O pin
Reset