MC81F4332 Datasheet, PDF (129/198 Pages) Finechips – ABOV SEMICONDUCTOR 8-BIT SINGLE-CHIP MICROCONTROLLERS

19.2 Timer 2 8-Bit Mode
MC81F4432
fxx/1024
fxx/256
fxx/64
fxx/16
fxx/8
fxx/4
fxx/2
fxx/1
fxt
EC2
Counter stop
M
EXT5
U
X
EINT0H
T2CS
Data BUS
T2OVIE
Timer 2 overflow INT enable
OVF
T2OVIR
T2 Overflow
M
8
Timer 2 Overflow INT request _Interrupt
U
8-Bit Up Counter
(Read - only)
R
X
Clear
T2CR
Clear
T2OVIF
T2CC
Match signal
T2MIE
Timer 2 match INT enable
8-Bit Comparator
Timer 2 Buffer Register
Match
T2MIR
T2 Match
Timer 2 Match INT request _Interrupt
T2O
T2MIF
EXT5
Interrupt
Timer 2 Data Register
T2DR
8
Data BUS
T2CC
Overflow signal
Match signal
Figure 19-1 8-bit Timer 2 Block Diagram
Timer 2 has the following functional components:
- Clock frequency divider (fxx divided by 1024, 256, 64, 16, 8, 4, 2, 1, fxt) with multiplexer
- External clock input pin, EC2 (R06)
- I/O pins for capture input, EXT5 (R07) or match output T2O (R07)
- 8-bit counter (T2CR), 8-bit comparator, and 8-bit reference data register (T2DR)
- Timer 2 status and control register (T2SCR)
- Timer 2 overflow interrupt and match interrupt generation
October 19, 2009 Ver.1.35
129