AT32UC3L0256 Atmel Corporation, AT32UC3L0256 Datasheet - Page 58
AT32UC3L0256
Manufacturer Part Number
AT32UC3L0256
Description
Manufacturer
Atmel Corporation
Datasheets
1.AT32UC3A0128.pdf
(377 pages)
2.AT32UC3A0128.pdf
(159 pages)
3.AT32UC3L0128.pdf
(85 pages)
4.AT32UC3L0128.pdf
(852 pages)
Specifications of AT32UC3L0256
Flash (kbytes)
256 Kbytes
Pin Count
48
Max. Operating Frequency
50 MHz
Cpu
32-bit AVR
# Of Touch Channels
17
Hardware Qtouch Acquisition
Yes
Max I/o Pins
36
Ext Interrupts
36
Usb Speed
No
Usb Interface
No
Spi
5
Twi (i2c)
2
Uart
4
Lin
4
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
8
Adc Resolution (bits)
12
Adc Speed (ksps)
460
Analog Comparators
8
Resistive Touch Screen
No
Temp. Sensor
Yes
Crypto Engine
No
Sram (kbytes)
16
Self Program Memory
YES
Dram Memory
No
Nand Interface
No
Picopower
Yes
Temp. Range (deg C)
-40 to 85
I/o Supply Class
1.62 to 3.6
Operating Voltage (vcc)
1.62 to 3.6
Fpu
No
Mpu / Mmu
Yes / No
Timers
6
Output Compare Channels
18
Input Capture Channels
12
Pwm Channels
35
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
AT32UC3L0256-D3HR
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Company:
Part Number:
AT32UC3L0256-H
Manufacturer:
ATMEL
Quantity:
270
Part Number:
AT32UC3L0256-H
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
32002F–03/2010
FRSQRTA.S – Floating Point Reciprocal Square Root Approximation
Description
Returns an approximation of the reciprocal of the square root 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 over-
flow in intermediate 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 ← ApproximateSquareRootReciprocal(Ry);
Set flags depending on the value in Ry
frsqrta.s
{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
Rd, Ry
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
1
58