SAM3U4E Atmel Corporation, SAM3U4E Datasheet - Page 1027
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SAM3U4E
Manufacturer Part Number
SAM3U4E
Description
Manufacturer
Atmel Corporation
Specifications of SAM3U4E
Flash (kbytes)
256 Kbytes
Pin Count
144
Max. Operating Frequency
96 MHz
Cpu
Cortex-M3
# Of Touch Channels
57
Hardware Qtouch Acquisition
No
Max I/o Pins
96
Ext Interrupts
96
Usb Transceiver
1
Quadrature Decoder Channels
1
Usb Speed
Hi-Speed
Usb Interface
Device
Spi
5
Twi (i2c)
2
Uart
5
Ssc
1
Sd / Emmc
1
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
16
Adc Resolution (bits)
12
Adc Speed (ksps)
384
Resistive Touch Screen
No
Temp. Sensor
No
Crypto Engine
No
Sram (kbytes)
50
Self Program Memory
YES
External Bus Interface
1
Dram Memory
No
Nand Interface
Yes
Picopower
No
Temp. Range (deg C)
-40 to 85
I/o Supply Class
1.8/3.3
Operating Voltage (vcc)
1.62 to 3.6
Fpu
No
Mpu / Mmu
Yes / No
Timers
3
Output Compare Channels
3
Input Capture Channels
3
Pwm Channels
4
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes
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Figure 40-4. Multi Buffer Transfer Using Linked List
6430E–ATARM–29-Aug-11
DSCRx(0)
DSCRx(1)
CTRLBx
CTRLAx
DADDRx
SADDRx
to 0. Other fields and registers are ignored and overwritten when the descriptor is retrieved from
memory.
The last transfer descriptor must be written to memory with its next descriptor address set to 0.
= DSCRx(0) + 0xC
= DSCRx(0) + 0x8
= DSCRx(0) + 0x4
LLI(0)
= DSCRx(0) + 0x0
= DSCRx(0) + 0x10
System Memory
DSCRx(1)
DSCRx(2)
CTRLBx
CTRLBx
DADDRx
SADDRx
LLI(1)
= DSCRx(1) + 0xC
= DSCRx(1) + 0x8
= DSCRx(1) + 0x4
= DSCRx(1) + 0x0
= DSCRx(1) + 0x10
SAM3U Series
DSCRx(2)
(points to 0 if
LLI(1) is the last
transfer descriptor
1027
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