AT32UC3C1128C Atmel Corporation, AT32UC3C1128C Datasheet - Page 1047
AT32UC3C1128C
Manufacturer Part Number
AT32UC3C1128C
Description
Manufacturer
Atmel Corporation
Datasheets
1.AT32UC3A0128.pdf
(377 pages)
2.AT32UC3A0128.pdf
(159 pages)
3.AT32UC3C0128C.pdf
(1313 pages)
4.AT32UC3C0128C.pdf
(108 pages)
Specifications of AT32UC3C1128C
Flash (kbytes)
128 Kbytes
Pin Count
100
Max. Operating Frequency
66 MHz
Cpu
32-bit AVR
Hardware Qtouch Acquisition
No
Max I/o Pins
81
Ext Interrupts
100
Usb Transceiver
1
Quadrature Decoder Channels
2
Usb Speed
Full Speed
Usb Interface
Device + OTG
Spi
7
Twi (i2c)
3
Uart
5
Can
2
Lin
5
Ssc
1
Ethernet
1
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
16
Adc Resolution (bits)
12
Adc Speed (ksps)
2000
Analog Comparators
4
Resistive Touch Screen
No
Dac Channels
4
Dac Resolution (bits)
12
Temp. Sensor
No
Crypto Engine
No
Sram (kbytes)
36
Self Program Memory
YES
Dram Memory
No
Nand Interface
No
Picopower
No
Temp. Range (deg C)
-40 to 85
I/o Supply Class
3.0 to 3.6 or 4.5 to 5.5
Operating Voltage (vcc)
3.0 to 3.6 or 4.5 to 5.5
Fpu
Yes
Mpu / Mmu
Yes / No
Timers
6
Output Compare Channels
22
Input Capture Channels
12
Pwm Channels
19
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AT32UC3C1128C-AUR
Manufacturer:
ATMEL
Quantity:
870
- AT32UC3A0128 PDF datasheet
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34. Quadrature Decoder (QDEC)
34.1
34.2
Figure 34-1. Quadrature Signals Description
32117C–AVR-08/11
Features
Overview
Rev.: 1.0.0.0
•
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•
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The QDEC is used in rotating motion systems for position and speed detection. It decodes
quadrature signals, normally two 90 degrees out-of-phases pulses, into count and direction
informations. The quadrature signals are usually generated by a wheel with periodic transparent
gaps (a.k.a. lines) and an optical system composed of one light source and 2 sensors.
The phase signals are labelled QEPA and QEPB. If QEPA leads QEPB, the rotation direction is
defined as positive. If QEPB leads QEPA, the rotation direction is defined as negative. Each
time a line passes the sensor, a counter register (CNT.PC) is incremented or decremented
depending of the rotation direction. A third input signal, QEPI, can be used to reset CNT.PC.
QDEC can count the total number of revolutions. A top value of CNT.PC is written to the Position
Counter Top Value in the Top Value register (TOP.PCTOP). When CNT.PC counts up to this
value, it wraps around to zero and the Revolution Counter field (CNT.RC) is incremented.
CNT.RC is decremented when CNT.PC counts down and crosses the zero value. CNT.PC will
then be reset to the value in TOP.PCTOP.
Handles three input channels:
Optional digital filter on inputs
16-bit position counter and 16-bit revolution counter
32-bit timer/counter mode
Software trigger or peripheral event trigger
Compare function with peripheral event generation
Capture function on peripheral event
– Two phase signals (QEPA, QEPB)
– One index pulse (QEPI)
QEPA
QEPB
QEPI
AT32UC3C
1047
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