AT32UC3A4256 Atmel Corporation, AT32UC3A4256 Datasheet - Page 576
AT32UC3A4256
Manufacturer Part Number
AT32UC3A4256
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 AT32UC3A4256
Flash (kbytes)
256 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
Ssc
1
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
AT32UC3A4256S-C1UR
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Company:
Part Number:
AT32UC3A4256S-U
Manufacturer:
ST
Quantity:
79
Part Number:
AT32UC3A4256S-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: 576 of 1012
- Download datasheet (16Mb)
25.6.9.8
32072G–11/2011
Identifier Parity
The following formula is used to calculate synchronization deviation, where F
slave node clock frequency, and F
ing to the LIN specification, F
nodes must be within ±2% of each other, resulting in a maximal BaudRate_deviation of ±1%.
Minimum nominal clock frequency with a fractional part:
Examples:
If the fractional part is not used, the synchronization accuracy is much lower. The 16 most signif-
icant bits, added with the first least significant bit, becomes the new clock divider (CD). The
equation of the baud rate deviation is the same as above, but the constants are:
Minimum nominal clock frequency without a fractional part:
Examples:
An identifier field consists of two sub-fields; the identifier and its parity. Bits 0 to 5 are assigned
to the identifier, while bits 6 and 7 are assigned to parity. Automatic parity management is dis-
abled by writing a one to the Parity Disable bit in the LIN Mode register (LINMR.PARDIS).
• The oversampling mode (OVER=0 => 16x, or OVER=1 => 8x)
• Baud rate = 20 kbit/s, OVER=0 (Oversampling 16x) => F
• Baud rate = 20 kbit/s, OVER=1 (Oversampling 8x) => F
• Baud rate = 1 kbit/s, OVER=0 (Oversampling 16x) => F
• Baud rate = 1 kbit/s, OVER=1 (Oversampling 8x) => F
• Baud rate = 20 kbit/s, OVER=0 (Oversampling 16x) => F
• Baud rate = 20 kbit/s, OVER=1 (Oversampling 8x) => F
• Baud rate = 1 kbit/s, OVER=0 (Oversampling 16x) => F
• Baud rate = 1 kbit/s, OVER=1 (Oversampling 8x) => F
BaudRate_deviation
BaudRate_deviation
F
F
Nom
Nom
(
(
min
min
)
)
=
=
⎛
⎜
⎜
⎜
⎝
100
⎛
⎜
⎜
⎜
⎝
TOL_UNSYNCH
100
–
–
4
0,5
×
≤
[
---------------------------------------------------------------------------------------------- -
TOL_UNSYNC
×
4 8
α +4
≤
=
=
[
------------------------------------------------------------------------------------------------------ -
×
≤
0,5
α +0,5
⎛
⎝
⎛
⎜
⎜
⎜
⎝
100
100
≤
×
×
(
8
may not exceed ±15%, and the bit rates between two
2 OVER
8
×
–
×
×
-1 β +1
×
⎛
⎝
is the difference between F
α [
-------------------------------------------------------------------------------------------------- -
α [
-------------------------------------------------------------------------------------------------- -
–
--------- -
100
8
(
<
15
2 OVER
×
×
×
-1
–
<
⎛
⎝
+
8
8
–
--------- -
100
)
8
<
1
15
×
×
+
⎞
⎠
β
×
1
×
(
(
⎛
⎝
<
2 OVER
2 OVER
+
]
1%
F
----------------------------------- -
×
+1
–
–
1
)
TOL_UNSYNC
Nom
Nom
Baudrate
⎞
⎠
+
Nom
Nom
Nom
Nom
8
×
Nom
Nom
1
×
(min) = 74 kHz
(min) = 485 kHz
100
]
1%
(min) = 1.47 MHz
(min) = 132 kHz
(min) = 9.71 MHz
(min) = 956 kHz
F
×
(min) = 2.64 MHz
(min) = 19.12 MHz
SLAVE
BaudRate
)
)
⎞
⎟
⎟
⎟
⎠
+ ]
+ ]
Hz
β
β
⎞ xF
⎠
×
×
Nom
BaudRate
BaudRate
Nom
⎞
⎟
⎟
⎟
⎠
Hz
and F
SLAVE
SLAVE
⎞ %
⎠
⎞
⎟
⎟
⎟
⎠
%
is the real
Accord-
576
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