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T48C862-R8 Datasheet

  • T48C862-R8

  • MCU

  • Atmel   Atmel

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Figure 54.
Externally Triggered Counter Reset and Start Combined with Single-action
Mode
T3R
0 0 0 0 0 0 0 0 1 2 3 4 5 6 7 8 9 10 0 1 2 X X X 0 1 2 3 4 5 6 7 8 9 10 0 1 2 X X X X
Counter 3
T3EX
CM31
CM32
T3O
Timer 3 鈥?Mode 3:
Timer/Counter, Internal
Trigger Restart and Internal
Capture (with TOG2)
The counter is driven by an internal or external (T3I) clock source. The output toggle sig-
nal of Timer 2 resets the counter. The counter value before the reset is saved in the
capture register. If single-action mode is activated for one or both compare registers, the
trigger signal restarts the single actions. This mode can be used for frequency measure-
ments or as event counter with time gate (see combination mode 10).
Figure 55.
Event Counter with Time Gate
T3R
T3I
0 0 1 2 3 4 5 6 7 8 9 10
11
0 1
2
Counter 3
TOG2
T3CP-
Register
Capture value = 0
3
4
0 1 2
Capture value = 11
Capture
value = 4
Timer 3 鈥?Mode 4:
Timer/Counter
Timer 3 鈥?Mode 5:
Timer/Counter, External
Trigger Restart and External
Capture (with T3I Input)
The timer runs as timer/counter in mode 1, but its output T3O is used as output for the
Timer 2 output signal.
The Timer 3 runs as timer/counter in mode 2, but its output T3O is used as output for the
Timer 2 output signal.
Timer 3 Modulator/Demodulator Modes
Timer 3 鈥?Mode 6:
Carrier Frequency Burst
Modulation Controlled by
Timer 2 Output Toggle
Flip-Flop (M2)
Timer 3 鈥?Mode 7:
Carrier Frequency Burst
Modulation Controlled by SSI
Internal Output (SO)
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 via the
output toggle flip-flop. The output toggle flip-flop of Timer 2 is used to enable or disable
the Timer 3 output. Timer 2 can be driven by the toggle output signal of Timer 3 or any
other clock source (see combination mode 11).
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 via the
output toggle flip-flop. The output (SO) of the SSI is used to enable or disable the Timer
3 output. The SSI should be supplied with the toggle signal of Timer 2 (see combination
mode 12).
58
T48C862-R8
4590B鈥?BMCU鈥?2/03

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