AT32UC3A3256S Atmel Corporation, AT32UC3A3256S Datasheet - Page 909
AT32UC3A3256S
Manufacturer Part Number
AT32UC3A3256S
Description
Manufacturer
Atmel Corporation
Datasheets
1.AT32UC3A0128.pdf
(377 pages)
2.AT32UC3A0128.pdf
(33 pages)
3.AT32UC3A0128.pdf
(159 pages)
4.AT32UC3A3128.pdf
(91 pages)
5.AT32UC3A3128.pdf
(1012 pages)
Specifications of AT32UC3A3256S
Flash (kbytes)
256 Kbytes
Pin Count
144
Max. Operating Frequency
66 MHz
Cpu
32-bit AVR
# Of Touch Channels
32
Hardware Qtouch Acquisition
No
Max I/o Pins
110
Ext Interrupts
110
Usb Transceiver
1
Usb Speed
Hi-Speed
Usb Interface
Device + OTG
Spi
6
Twi (i2c)
2
Uart
4
Lin
4
Ssc
1
Sd / Emmc
1
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
8
Adc Resolution (bits)
10
Adc Speed (ksps)
384
Resistive Touch Screen
No
Dac Channels
2
Dac Resolution (bits)
16
Temp. Sensor
No
Crypto Engine
AES
Sram (kbytes)
128
Self Program Memory
YES
External Bus Interface
1
Dram Memory
sdram
Nand Interface
Yes
Picopower
No
Temp. Range (deg C)
-40 to 85
I/o Supply Class
3.0 to 3.6
Operating Voltage (vcc)
3.0 to 3.6
Fpu
No
Mpu / Mmu
Yes / No
Timers
6
Output Compare Channels
18
Input Capture Channels
12
Pwm Channels
12
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AT32UC3A3256S-ALUT
Manufacturer:
MOLEX
Quantity:
20 000
Part Number:
AT32UC3A3256S-U
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
- AT32UC3A0128 PDF datasheet
- AT32UC3A0128 PDF datasheet #2
- AT32UC3A0128 PDF datasheet #3
- AT32UC3A3128 PDF datasheet #4
- AT32UC3A3128 PDF datasheet #5
- Current page: 909 of 1012
- Download datasheet (16Mb)
33.6.3
33.6.4
33.6.5
33.6.6
33.6.7
33.6.8
32072G–11/2011
Data Swapping
Peripheral DMA Controller
Construction
Equalization Filter
Interpolation Filter
Sigma-Delta Modulator
If one want to get coherence between the sign of the input data and the output voltage one can
use the DATAN signal or invert the sign of the input data by software.
When the SWAP bit in the ABDAC Control Register (CR.SWAP) is written to one, writing to the
Sample Data Register (SDR) will cause the values written to the CHANNEL0 and CHANNEL1
fields to be swapped.
The Audio Bitstream DAC is connected to the Peripheral DMA Controller. The Peripheral DMA
Controller can be programmed to automatically transfer samples to the Audio Bitstream DAC
Sample Data Register (SDR) when the Audio Bitstream DAC is ready for new samples. In this
case only the CR.EN bit needs to be set in the Audio Bitstream DAC module. This enables the
Audio Bitstream DAC to operate without any CPU intervention such as polling the Interrupt Sta-
tus Register (ISR) or using interrupts. See the Peripheral DMA Controller documentation for
details on how to setup Peripheral DMA transfers.
The Audio Bitstream DAC is constructed of two 3rd order Sigma-Delta D/A converter with an
oversampling ratio of 128. The samples are upsampled with a 4th order Sinc interpolation filter
(Comb4) before being applied to the Sigma-Delta Modulator. In order to compensate for the
pass band frequency response of the interpolation filter and flatten the overall frequency
response, the input to the interpolation filter is first filtered with a simple 3-tap FIR filter.The total
frequency response of the Equalization FIR filter and the interpolation filter is given in
2 on page
pass filtered to remove high frequency noise inserted by the modulation process.
The equalization filter is a simple 3-tap FIR filter. The purpose of this filter is to compensate for
the pass band frequency response of the sinc interpolation filter. The equalization filter makes
the pass band response more flat and moves the -3dB corner a little higher.
The interpolation filter interpolates from f
Comb filter, and the basic building blocks of this filter is a comb part and an integrator part.
This part is a 3rdorder Sigma-Delta Modulator consisting of three differentiators (delta blocks),
three integrators (sigma blocks) and a one bit quantizer. The purpose of the integrators is to
shape the noise, so that the noise is reduced in the band of interest and increased at the higher
frequencies, where it can be filtered.
910. The digital output bitstreams from the Sigma-Delta Modulators should be low-
s
to 128f
s
. This filter is a 4thorder Cascaded Integrator-
Figure 33-
909
Related parts for AT32UC3A3256S
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
INTERVAL AND WIPE/WASH WIPER CONTROL IC WITH DELAY
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
Low-Voltage Voice-Switched IC for Hands-Free Operation
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
MONOLITHIC INTEGRATED FEATUREPHONE CIRCUIT
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
AM-FM Receiver IC U4255BM-M
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
Monolithic Integrated Feature Phone Circuit
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
Multistandard Video-IF and Quasi Parallel Sound Processing
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
High-performance EE PLD
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
8-bit Flash Microcontroller
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
2-Wire Serial EEPROM
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
U6046BREAR WINDOW HEATING TIMER / LONG-TERM TIMER
Manufacturer:
ATMEL Corporation
Datasheet: