AT32UC3A3256AU Atmel Corporation, AT32UC3A3256AU Datasheet - Page 744

• 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

27.5.2
27.5.3
27.5.4
27.5.5
27.6
27.6.1
27.6.1.1
27.6.1.2
32072G–11/2011
Functional Description
Power Management
Clocks
Interrupts
Debug Operation
TC Description
Channel I/O Signals
16-bit counter
If the CPU enters a sleep mode that disables clocks used by the TC, the TC will stop functioning
and resume operation after the system wakes up from sleep mode.
The clock for the TC bus interface (CLK_TC) is generated by the Power Manager. This clock is
enabled at reset, and can be disabled in the Power Manager. It is recommended to disable the
TC before disabling the clock, to avoid freezing the TC in an undefined state.
The TC interrupt request line is connected to the interrupt controller. Using the TC interrupt
requires the interrupt controller to be programmed first.
The Timer Counter clocks are frozen during debug operation, unless the OCD system keeps
peripherals running in debug operation.
The three channels of the Timer Counter are independent and identical in operation. The regis-
ters for channel programming are listed in
As described in
Table 27-2.
Each channel is organized around a 16-bit counter. The value of the counter is incremented at
each positive edge of the selected clock. When the counter has reached the value 0xFFFF and
passes to 0x0000, an overflow occurs and the Counter Overflow Status bit in the Channel n Sta-
tus Register (SRn.COVFS) is set.
The current value of the counter is accessible in real time by reading the Channel n Counter
Value Register (CVn). The counter can be reset by a trigger. In this case, the counter value
passes to 0x0000 on the next valid edge of the selected clock.
Block/Channel
Channel Signal
Channel I/O Signals Description
Figure 27-1 on page
XC0, XC1, XC2
Signal Name
SYNC
TIOA
TIOB
INT
743, each Channel has the following I/O signals.
Figure 27-3 on page
Description
External Clock Inputs
Capture mode: Timer Counter Input
Waveform mode: Timer Counter Output
Capture mode: Timer Counter Input
Waveform mode: Timer Counter Input/Output
Interrupt Signal Output
Synchronization Input Signal
759.
744