AT32UC3A1256AU Atmel Corporation, AT32UC3A1256AU Datasheet - Page 64

• Manufacturer Part Number: AT32UC3A1256AU
• Manufacturer: Atmel Corporation

Specifications of AT32UC3A1256AU

• Flash (kbytes): 256 Kbytes
• Pin Count: 100
• Max. Operating Frequency: 66 MHz
• Cpu: 32-bit AVR
• # Of Touch Channels: 32
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 69
• Ext Interrupts: 69
• Usb Transceiver: 1
• Usb Speed: Full Speed
• Usb Interface: Device + OTG
• Spi: 6
• Twi (i2c): 1
• Uart: 4
• Ssc: 1
• Ethernet: 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): 64
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 3.0-3.6 or (1.65-1.95+3.0-3.6)
• Operating Voltage (vcc): 3.0-3.6 or (1.65-1.95+3.0-3.6)
• Fpu: No
• Mpu / Mmu: Yes / No
• Timers: 10
• Output Compare Channels: 16
• Input Capture Channels: 6
• Pwm Channels: 13
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

32058K AVR32-01/12
It is also possible to reset the device by asserting the RESET_N pin. This pin has an internal pul-
lup, and does not need to be driven externally when negated.
reset sources supported by the Reset Controller.
Figure 13-6. Reset Controller block diagram
In addition to the listed reset types, the JTAG can keep parts of the device statically reset
through the JTAG Reset Register. See JTAG documentation for details.
Table 13-3.
When a Reset occurs, some parts of the chip are not necessarily reset, depending on the reset
source. Only the Power On Reset (POR) will force a reset of the whole chip.
Reset source
Power-on Reset
External Reset
Brownout Reset
CPU Error
Watchdog Timer
OCD
R E S E T _ N
P o w e r-O n
B ro w n o u t
D e te c to r
D e te c to r
W a tc h d o g R e s e t
Reset description
J T A G
O C D
Description
Supply voltage below the power-on reset detector threshold
voltage
RESET_N pin asserted
Supply voltage below the brownout reset detector threshold
voltage
Caused by an illegal CPU access to external memory while
in Supervisor mode
See watchdog timer documentation.
See On-Chip Debug documentation
C o n tro lle r
R C _ R C A U S E
R e s e t
Table 13-4
AT32UC3A
lists these and other
O C D , R T C /W D T
C lo c k G e n e ra to
C P U , H S B ,
P B A , P B B
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