120
CHAPTER 9 8-BIT TIMER/EVENT COUNTERS 2, 3 TM2, TM3
Figure 9-2. Timer 3 (TM3) Block Diagram
Note Bit 4 of port mode register 4 (PM4)
Internal bus
8-bit compare
register 3 (CR3)
8-bit counter 3
(TM3)
TIO3/P44
f
X
/2
12
f
X
/2
4
f
X
/2
6
Selector
Coincidence
Mask circuit
OVF
Clear
3
Selector
TCL32 TCL31 TCL30
Timer clock select
register 3 (TCL3)
Internal bus
TCE3 TMC36 LVS3 LVR3 TMC31 TOE3
Invert
level
Timer mode control
register 3 (TMC3)
S
R
Q
R
INV
Selector
INTTM3
S
TIO3/P44
P44 output latch PM44
Note
f
X
/2
7
f
X
/2
8
f
X
/2
10
Selector
Содержание mPD780973 Series
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