AT32UC3A4128 Atmel Corporation, AT32UC3A4128 Datasheet - Page 345
AT32UC3A4128
Manufacturer Part Number
AT32UC3A4128
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 AT32UC3A4128
Flash (kbytes)
128 Kbytes
Pin Count
100
Max. Operating Frequency
66 MHz
Cpu
32-bit AVR
Hardware Qtouch Acquisition
No
Usb Transceiver
1
Usb Speed
Hi-Speed
Usb Interface
Device + OTG
Spi
6
Twi (i2c)
2
Uart
4
Sd / Emmc
2
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
8
Adc Resolution (bits)
10
Resistive Touch Screen
No
Temp. Sensor
No
Crypto Engine
No
Sram (kbytes)
128
Self Program Memory
YES
Dram Memory
No
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
6
Input Capture Channels
6
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes
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- AT32UC3A0128 PDF datasheet
- AT32UC3A0128 PDF datasheet #2
- AT32UC3A0128 PDF datasheet #3
- AT32UC3A3128 PDF datasheet #4
- AT32UC3A3128 PDF datasheet #5
- Current page: 345 of 1012
- Download datasheet (16Mb)
Figure 19-19. DMA Transfer Flow for Source Address Auto-reloaded and Contiguous Destination Address
19.11 Disabling a Channel Prior to Transfer Completion
32072G–11/2011
Under normal operation, software enables a channel by writing a ‘1’ to the Channel Enable Reg-
ister, ChEnReg.CH_EN, and hardware disables a channel on transfer completion by clearing the
ChEnReg.CH_EN register bit.
The recommended way for software to disable a channel without losing data is to use the
CH_SUSP bit in conjunction with the FIFO_EMPTY bit in the Channel Configuration Register
(CFGx) register.
1. If software wishes to disable a channel prior to the DMA transfer completion, then it can
2. Software can now poll the CFGx.FIFO_EMPTY bit until it indicates that the channel
Block Complete interrupt
DMAC Transfer Complete
interrupt generated here
set the CFGx.CH_SUSP bit to tell the DMACA to halt all transfers from the source
peripheral. Therefore, the channel FIFO receives no new data.
FIFO is empty.
generated here
Hardware reprograms
DMAC block transfer
Channel Enabled by
Source/destination
Row 1 of Table 4 ?
Channel Disabled by
SARx, CTLx, LLPx
Is DMAC in
status fetch
LLI Fetch
software
hardware
yes
no
345
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