AT32UC3A1256AU Atmel Corporation, AT32UC3A1256AU Datasheet - Page 57
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AT32UC3A1256AU
Manufacturer Part Number
AT32UC3A1256AU
Description
Manufacturer
Atmel Corporation
Datasheets
1.AT32UC3A0128.pdf
(98 pages)
2.AT32UC3A0128.pdf
(826 pages)
3.AT32UC3A0128.pdf
(377 pages)
4.AT32UC3A0128.pdf
(33 pages)
5.AT32UC3A0128.pdf
(159 pages)
6.AT32UC3A0128AU.pdf
(2 pages)
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
32002F–03/2010
FRCPA.S – Floating Point Reciprocal Approximation
Description
Returns an approximation of the reciprocal of the operand. This can be used as a starting point
for iterative approximation algorithms. Also checks the operand for the special values Infinity,
Not-a-Number and Denormal. A check is also performed for values with the two biggest possible
representable exponents, i.e. 0xFD and 0xFE. This is useful for avoiding overflow in intermedi-
ate calculations in certain iterative algorithms. The operation sets the status flags according to
the result of this check.
Operation:
I.
Syntax:
I.
Operands:
I.
Status Flags:
Opcode:
31
1
15
0
0
Rd ← ApproximateReciprocal(Ry);
Set flags depending on the value in Ry
frcpa.s Rd, Ry
{d, y} ∈ {0, 1, …, 15}
Q:
1
Predicate
Operand == NaN
Operand == Infinity
Operand ==
(Denormal or
(Exponent==0xFD) or
(Exponent==0xFE))
0
29
1
Not affected
28
0
0
0
Status register flag
values if predicate
true
C
N
V
Z
C
N
V
Z
C
N
V
Z
1
Rd
←
←
←
←
←
←
←
←
←
←
←
←
0
0
0
1
0
0
0
1
1
0
0
0
0
25
24
1
1
0
0
0
Condition for
branch if
predicate true
lo
gt
eq
1
0
20
0
0
19
1
Condition for
branch if
predicate false
gt
lo
ne
1
Ry
AVR32
1
0
16
0
57