AT32UC3A3256 Atmel Corporation, AT32UC3A3256 Datasheet - Page 5
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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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
AT32UC3A3256-ALU
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Company:
Part Number:
AT32UC3A3256-ALUR
Manufacturer:
ATMEL
Quantity:
1 500
Company:
Part Number:
AT32UC3A3256-ALUT
Manufacturer:
TST
Quantity:
430
Part Number:
AT32UC3A3256-ALUT
Manufacturer:
MICROCHIP/微芯
Quantity:
20 000
Company:
Part Number:
AT32UC3A3256-CTUT
Manufacturer:
ATMEL
Quantity:
2 757
Company:
Part Number:
AT32UC3A3256-U
Manufacturer:
ATMEL
Quantity:
89
Part Number:
AT32UC3A3256S-U
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
6. Inner Workings
6.1 Memory Layout
6.2 Configuration
6.2.1 General-Purpose Fuse Bits
7745C–AVR32–05/09
An AVR UC3 part having the bootloader programmed resets as any other part at 80000000h.
Bootloader execution begins here. The bootloader first performs the boot process to know
whether it should start the USB DFU ISP or the application. If the tested conditions indicate that
the USB DFU ISP should be started, then execution continues in the bootloader area, i.e.
between 80000000h and 80002000h, else the bootloader launches the application at
80002000h.
The conditions tested by the boot process are configured by the general-purpose fuse bits
located outside of the MCU address space and by a 32-bit configuration word located at the end
of the flash User page.
Figure 6-1. AT32UC3A0512 Non-Volatile Memory Layout with USB DFU Bootloader
The bootloader has a configuration which determines the behavior of the boot process and of
the ISP. This configuration is non-volatile and is stored on the one hand in the 32 general-pur-
pose fuse bits and on the other hand in the flash User page (see Figure 6-1).
See the AVR UC3 datasheets referred to by Section 3 for further information about the general-
purpose fuse bits and the flash User page.
The AVR UC3 have 32 general-purpose fuse bits. When these bits are erased, they are at 1b.
The AVR UC3 devices are shipped with:
•
•
•
For AVR UC3 A0, A1: the general-purpose fuses set to FC07FFFFh.
For AVR UC3 A3: the general-purpose fuses set to FFF7FFFFh.
For AVR UC3 B0, B1: the general-purpose fuses set to FC07FFFFh.
configuration word is
32-bit bootloader
Reset vector is
@ 808001FCh
@ 80800000h
@ 80002000h
@ 80000000h
Application is
User page is
MCU Address Space
Free Flash Space
Flash User Page
Application
Bootloader
504 kB
512 B
8 kB
512-kB
Flash
Array
32 GP Fuse
Bits
5