AT32UC3A4256 Atmel Corporation, AT32UC3A4256 Datasheet - Page 958

• Manufacturer Part Number: AT32UC3A4256
• Manufacturer: Atmel Corporation

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

Table 35-9.
35.5.3
Table 35-10. Electrical Characteristics
32072G–11/2011
Symbol
T
Symbol
V
V
V
V
T
T
BOD
DDRR
POR+
POR-
RESTART
SSU1
SSU2
Reset Sequence
BOD Timing
Parameter
Minimum time with VDDCORE <
VBOD to detect power failure
Parameter
VDDIN/VDDIO rise rate to ensure
power-on-reset
Rising threshold voltage: voltage up
to which device is kept under reset by
POR on rising VDDIN
Falling threshold voltage: voltage
when POR resets device on falling
VDDIN
On falling VDDIN, voltage must go
down to this value before supply can
rise again to ensure reset signal is
released at V
Time for Cold System Startup: Time
for CPU to fetch its first instruction
(RCosc not calibrated)
Time for Hot System Startup: Time for
CPU to fetch its first instruction
(RCosc calibrated)
POR+
Conditions
Falling VDDCORE from 1.8V to 1.1V
Conditions
Rising VDDIN: V
Falling VDDIN: 3.3V -> V
Falling VDDIN: 3.3V -> V
RESTART
-> V
POR-
RESTART
POR+
Min.
Min.
480
0.8
Typ.
Typ.
300
420
2.7
2.7
Max.
Max.
800
960
0.2
V/ms
Unit
Unit
ns
µs
µs
V
V
V
958