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Timer/ Event Counter
Timer/Event Counter Programming Model
Notes:
1. If the clock is external, the counter is incremented by the transitions on the
TIO0 signal. The external clock is internally synchronized to the internal
clock, and its frequency should be lower than the internal operating frequency
divided by 4 (CLK/4).
2. To ensure proper operation, the TC[3:0] bits should be changed only when the
timer is disabled (when the TE bit in the TCSR has been cleared).
Bit Settings
TC3
TC2
TC1
0
0
0
0
0
0
0
0
1
0
0
1
0
1
0
0
1
0
0
1
1
0
1
1
1
0
0
1
0
0
1
0
1
1
0
1
1
1
0
1
1
0
1
1
1
1
1
1
Note:
The GPIO function is enabled only if all of the TC[3:0] bits are zero.
13-8
Table 13-2 Timer Control Bits for Timer 0
Mode
TC0
Number
0
0
1
1
0
2
1
3
0
4
1
5
0
6
1
7
0
8
1
9
0
10
1
11
0
12
1
13
0
14
1
15
DSP56367
Mode Characteristics
Mode Function
Timer and GPIO
Timer pulse
Timer toggle
Event counter
Input width measurement
Input period measurement
Capture event
Pulse width modulation
Reserved
Watchdog pulse
Watchdog toggle
Reserved
Reserved
Reserved
Reserved
Reserved
TIO0
Clock
*
Internal
GPIO
Output
Internal
Output
Internal
Input
External
Input
Internal
Input
Internal
Input
Internal
Output
Internal
—
—
Output
Internal
Output
Internal
—
—
—
—
—
—
—
—
—
—
MOTOROLA
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