AT32UC3A3256AU Atmel Corporation, AT32UC3A3256AU Datasheet - Page 108

• Manufacturer Part Number: AT32UC3A3256AU
• Manufacturer: Atmel Corporation

Specifications of AT32UC3A3256AU

• 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

11.3
Figure 11-1. EIC Block Diagram
11.4
11.5
11.5.1
11.5.2
32072G–11/2011
Block Diagram
I/O Lines Description
Product Dependencies
I/O Lines
Power Management
E X T I N T n
N M I
C L K _ S Y N C
C L K _ R C S Y S
E n a b le
C T R L
D I S
E N
Table 11-1.
In order to use this module, other parts of the system must be configured correctly, as described
below.
The external interrupt pins (EXTINTn and NMI) are multiplexed with I/O lines. To generate an
external interrupt from an external source the source pin must be configured as an input pins by
the I/O Controller. It is also possible to trigger the interrupt by driving these pins from registers in
the I/O Controller, or another peripheral output connected to the same pin.
All interrupts are available in all sleep modes as long as the EIC module is powered. However, in
sleep modes where CLK_SYNC is stopped, the interrupt must be configured to asynchronous
mode.
Pin Name
NMI
EXTINTn
SCANm
P r e s c a le r
F I L T E R
F ilt e r
P o la r it y
c o n t r o l
L E V E L
M O D E
E D G E
I/O Lines Description
Pin Description
Non-Maskable Interrupt
External Interrupt
Keypad scan pin m
P R E S C
E d g e / L e v e l
D e t e c t o r
L E V E L
M O D E
E D G E
A s y n c h r o n u s
d e t e c t o r
S h if t e r
A S Y N C
S C A N
E N
Type
Input
Input
Output
P I N
I N T n
C T R L
I C R
I S R
d e t e c t
W a k e
S C A N m
M a s k
I D R
I M R
I E R
E I C _ W A K E
I R Q n
108