AT32UC3A3256S Atmel Corporation, AT32UC3A3256S Datasheet - Page 562
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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: 562 of 1012
- Download datasheet (16Mb)
25.6.3.11
32072G–11/2011
Receiver Time-out
Table 25-8.
The Time-out Value field in the Receiver Time-out Register (RTOR.TO) enables handling of vari-
able-length frames by detection of selectable idle durations on the RXD line. The value written to
TO is loaded to a decremental counter, and unless it is zero, a time-out will occur when the
amount of inactive bit periods match the initial counter value. If a time-out has not occurred, the
counter will reload and restart every time a new character arrives. A time-out sets the TIMEOUT
bit in CSR. Clearing TIMEOUT can be done in two ways:
Figure 25-23. Receiver Time-out Block Diagram
Table 25-9.
• Writing a one to the Start Time-out bit (CR.STTTO). This also aborts count down until the
• Writing a one to the Reload and Start Time-out bit (CR.RETTO). This also reloads the
RETTO
next character has been received.
counter and restarts count down immediately.
Baud Rate (bit/sec)
Baud Rate (bit/sec)
Character
Received
STTTO
115200
14400
19200
28800
33400
56000
57600
1 200
9 600
1 200
2 400
4 800
600
Maximum Baud Rate Dependent Timeguard Durations
Maximum Time-out Period
1
D
Clear
Q
Baud Rate
Clock
Clock
Bit Time (µs)
Bit time (µs)
1 667
69.4
52.1
34.7
29.9
17.9
17.4
833
104
833
417
208
8.7
16-bit Time-out
Counter
TO
Load
16-bit
Value
0
Timeguard (ms)
Time-out (ms)
109 225
212.50
54 613
27 306
13 653
26.56
17.71
13.28
8.85
7.63
4.55
4.43
2.21
=
TIMEOUT
562
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