AT32UC3A4256 Atmel Corporation, AT32UC3A4256 Datasheet - Page 445
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: 445 of 1012
- Download datasheet (16Mb)
22.5
22.6
Table 22-4.
22.7
22.7.1
32072G–11/2011
Pin Name
TWD
TWCK
TWALM
Application Block Diagram
I/O Lines Description
Product Dependencies
I/O Lines
I/O Lines Description
Figure 22-2. Application Block Diagram
In order to use this module, other parts of the system must be configured correctly, as described
below.
TWDand TWCK are bidirectional lines, connected to a positive supply voltage via a current
source or pull-up resistor (see
high. The output stages of devices connected to the bus must have an open-drain or open-col-
lector to perform the wired-AND function.
TWALM is used to implement the optional SMBus SMBALERT signal.
TWALM, TWD, and TWCK pins may be multiplexed with I/O Controller lines. To enable the
TWIS, the user must perform the following steps:
• Program the I/O Controller to:
Rp: Pull up value as given by the I²C Standard
Host with
Interface
– Dedicate TWD, TWCK, and optionally TWALM as peripheral lines.
– Define TWD, TWCK, and optionally TWALM as open-drain.
TWI
Pin Description
Two-wire Serial Data
Two-wire Serial Clock
SMBus SMBALERT
TWD
TWCK
serial EEPROM
Atmel TWI
Slave 1
Figure 22-5 on page
I²C RTC
Slave 2
controller
I²C LCD
Slave 3
447). When the bus is free, both lines are
I²C temp.
Slave 4
sensor
Rp
Input/Output
Input/Output
Input/Output
Type
Rp
VDD
445
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