ATAM894X-TNQY ATMEL [ATMEL Corporation], ATAM894X-TNQY Datasheet - Page 80
ATAM894X-TNQY
Manufacturer Part Number
ATAM894X-TNQY
Description
8k-flash Microcontroller
Manufacturer
ATMEL [ATMEL Corporation]
Datasheet
1.ATAM894X-TNQY.pdf
(97 pages)
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Figure 6-62. Burst Modulation 1
80
Counter 2/2
ATAM894
Counter 3
TOG3
TOG2
CM1
CM2
T3O
CL3
M3
M2
0 1 0 1 2 3 4 5 0 1 0 1 2 3 4 5 0 1 0 1 2 3 4 5 0 1 0 1
3
0
Figure 6-60. Frequency Measurement
Figure 6-61. Event Counter with Time Gate
Combination Mode 11: Burst Modulation 1
Timer 2 mode 1/2:
Timer 2 output mode 1/6:
Timer 3 mode 6:
The Timer 3 counter is driven by an internal or external clock source. Its compare- and compare
mode registers must be programmed to generate the carrier frequency with the output toggle
flip-flop. The output toggle flip-flop (M2) of Timer 2 is used to enable and disable the Timer 3 out-
put. The Timer 2 can be driven by the toggle output signal of Timer 3 (TOG3) or any other clock
source.
1
Counter 3
Register
Counter 3
Register
T3CP-
TOG2
T3CP-
TOG2
T3R
T3R
T3I
T3I
2
0 0 1 2 3 4 5 6 7 8 9 10
0 0 1 2 3 4 5 6 7 8 910
3
5 0 1 0 1
Capture value = 0
Capture value = 0
5 0 1 0 1
12-bit compare counter/8-bit compare counter and
4-bit prescaler
Timer 2 compare match toggles the output flip-flop (M2)
to the Timer 3
Carrier frequency burst modulation controlled by Timer 2
output (M2)
5 0 1 0 1
111213141516 17
11
5 0 1 0 1
0
3
0 1
1 2 3 4 5 6 7 8 9 101112131415161718
5 0 1 0 1
0
Capture value = 17
2
5 0 1 0 1
Capture value = 11
1
5 0 1 0 1
3
2
5 0 1 0 1
4
Capt. value = 18
0 1 2 3 4 5
3
4679D–4BMCU–05/05
5 0 1 0 1
Cap. value = 4
0 1
2
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