MC81F4104 Datasheet, PDF (78/118 Pages) Finechips – ABOV SEMICONDUCTOR

MC81F4104
17.2 Timer 3 8-Bit Mode
fxx/2048
fxx/512
fxx/128
fxx/32
fxx/16
fxx/8
fxx/4
fxx/2
EC3
Counter stop
M
EXT2
U
X
EINT0
T3CS
T3OVIE
Data BUS
OVF
T3OVIR
Timer 3 overflow INT enable
T3 Overflow
Interrupt
M
8
Timer 3 overflow INT request
U
8-Bit Up Counter
(Read - only)
R
X
Clear
T3CR
Clear
T3CC
Match signal
T3MIE
Timer 3 match INT enable
8-Bit Comparator
Match
T3MIR
T3 Match
Interrupt
Timer 3 match INT request
Timer 3 Buffer Register
EXT2
Interrupt
Timer 3 Data Register
T3DR
8
Data BUS
T3CC
Overflow signal
Match signal
Figure 17-1 8-bit Timer 3 Block Diagram
Timer 3 has the following functional components:
- Clock frequency divider (fxx divided by 2048, 512, 128, 32, 16, 8, 4, 2) with multiplexer
- External clock input pin, EC3 (R07)
- I/O pins for capture input, EXT2 (R07)
- 8-bit counter (T3CR), 8-bit comparator, and 8-bit reference data register (T3DR)
- Timer 3 status and control register (T3SCR)
- Timer 3 overflow interrupt and match interrupt generation
78
October 19, 2009 Ver.1.35