AT32UC3A3256 Atmel Corporation, AT32UC3A3256 Datasheet - Page 369
AT32UC3A3256
Manufacturer Part Number
AT32UC3A3256
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 AT32UC3A3256
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
No
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
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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: 369 of 1012
- Download datasheet (16Mb)
19.12.16 Source Software Transaction Request Register
Name:
Access Type:
Offset:
Reset Value:
A bit is assigned for each channel in this register. ReqSrcReg[n] is ignored when software handshaking is not enabled for
the source of channel n.
A channel SRC_REQ bit is written only if the corresponding channel write enable bit in the REQ_WE field is asserted on
the same System Bus write transfer.
For example, writing 0x101 writes a 1 into ReqSrcReg[0], while ReqSrcReg[4:1] remains unchanged. Writing hex 0x0yy
leaves ReqSrcReg[4:0] unchanged. This allows software to set a bit in the ReqSrcReg register without performing a read-
modified write
• REQ_WE[11:8]: Request write enable
• SRC_REQ[3:0]: Source request
32072G–11/2011
31
23
15
7
-
-
-
-
0 = Write disabled
1 = Write enabled
30
22
14
6
-
-
-
-
ReqSrcReg
Read/write
0x368
0x00000000
29
21
13
5
-
-
-
-
28
20
12
4
-
-
-
-
SRC_REQ3
REQ_WE3
27
19
11
3
-
-
SRC_REQ2
REQ_WE2
26
18
10
2
-
-
SRC_REQ1
REQ_WE1
25
17
9
1
-
-
SRC_REQ0
REQ_WE0
24
16
8
0
-
-
369
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