AT32UC3A1256AU Atmel Corporation, AT32UC3A1256AU Datasheet - Page 41

• 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

4.2.2
32002F–03/2010
Floating point check (fchk.s)
the condition flags set by fcmp.s directly. The following mapping from floating point compare
results to AVR32 status register flags is used:
Table 4-1.
Table 4-2.
This instruction checks the operand for special values, such as Not-a-Number (NaN), infinity (inf)
and denormal. Status register flags are set according to the result of the fchk.s instruction. This
instruction is useful since some algorithms require special treatment of these special values. The
floating point approximation instructions updates the status register flags in the same way as
fchk.s, since iterative approximation algorithms require special handling of these special values.
Ordinary AVR32 branch instructions such as breq and conditional instructions such as retge and
movls can use the condition flags set by fchk.s directly.
Compare result
Less
Greater
Equal
Unordered
Branch if:
Equal
Not Equal
Greater than or equal
Greater than
Less than
Less than or equal
Unordered
Floating point compare flag setting
Floating point branch conditions
Status register flags
SREG[C] = 1
SREG[N] = 1
SREG[V] = 0
SREG[Z] = 0
SREG[C] = 0
SREG[N] = 0
SREG[V] = 0
SREG[Z] = 0
SREG[C] = 0
SREG[N] = 0
SREG[V] = 0
SREG[Z] = 1
SREG[C] = 0
SREG[N] = 0
SREG[V] = 1
SREG[Z] = 0
AVR32 Branch condition mnemonic
eq
ne
ge
gt
lo
ls
vs
AVR32
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