AT32UC3C2512C Automotive Atmel Corporation, AT32UC3C2512C Automotive Datasheet - Page 1049
AT32UC3C2512C Automotive
Manufacturer Part Number
AT32UC3C2512C Automotive
Description
Manufacturer
Atmel Corporation
Datasheets
1.AT90CAN128_AUTOMOTIVE.pdf
(225 pages)
2.AT32UC3C0512C_AUTOMOTIVE.pdf
(1312 pages)
3.AT32UC3C0512C_AUTOMOTIVE.pdf
(107 pages)
- AT90CAN128_AUTOMOTIVE PDF datasheet
- AT32UC3C0512C_AUTOMOTIVE PDF datasheet #2
- AT32UC3C0512C_AUTOMOTIVE PDF datasheet #3
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34.6.1.2
34.6.1.3
9166C–AVR-08/11
Trigger
Quadrature decoder logic and digital filter
{A,B} =
QEPA
QEPB
(0,0)
Figure 34-3. Clock Control
A trigger resets the QDEC counter and starts CLK_QDEC_INT. Two triggers are possible:
•
•
The QDEC counter is reset when the peripheral trigger event occurs.
The quadrature decoder logic converts the 2-phase signals QEPA and QEPB in a count pulse
signal (QPulse) for each transition and a DIR signal to indicate the rotation direction.
Figure 34-4. Quadrature Description
The QEPI signal may be used to detect a reference position once per revolution.
The 3 inputs (QEPA/QEPB/QEPI) can be inverted by writing to appropriate bits in CF.
(0,1)
A software trigger, by writing a one to the Software Trigger bit in CTRL
(CTRL.SWTRG).
Trigger peripheral event from the PEVC: If enabled by writing a one to the Event
Trigger Enable bit in the Configuration Register (CF.EVTRGE).
PEVC trigger
CTRL[CLKEN]= 1
(1,1)
(1,0)
CTRL[CLKEN]=0
A
N
D
Increment
Increment
counter
GCLK_QDEC
counter
Decrement
00
Reset
Set
Decrement
counter
counter
Q
SR[CLKEN]
10
01
A
N
D
Decrement
Decrement
counter
counter
CLK_QDEC_INT
11
AT32UC3C
Increment
counter
Increment
counter
1049
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