ATUC256L4U Atmel Corporation, ATUC256L4U Datasheet - Page 237

• Manufacturer Part Number: ATUC256L4U
• Manufacturer: Atmel Corporation

Specifications of ATUC256L4U

• 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 Transceiver: 1
• Usb Speed: Full Speed
• Usb Interface: Device
• Spi: 1
• Twi (i2c): 2
• Uart: 4
• Lin: 4
• Ssc: 1
• 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

32000D–04/2011
MULSATHH.H – Multiply Halfwords with Saturation into Halfword
Architecture revision:
Architecture revision1 and higher.
Description
Multiplies the two halfword registers specified, shifts the results one position to the left and
stores the sign-extended high halfword of the result in the destination word-register. If the two
operands equals -1, the result is saturated to the largest positive 16-bit fractional number. The
halfword registers are selected as either the high or low part of the operand registers.
Operation:
I.
Syntax:
I.
Operands:
I.
Status Flags:
Opcode:
Example:
31
1
15
0
If (Rx-part == t) then operand1 = SE(Rx[31:16]) else operand1 = SE(Rx[15:0]);
If (Ry-part == t) then operand2 = SE(Ry[31:16]) else operand2 = SE(Ry[15:0]);
If (operand1 == operand2 == 0x8000)
else
mulsathh.h Rd, Rx:<part>, Ry:<part>
{d, x, y} ∈ {0, 1, …, 15}
part ∈ {t,b}
Q:
V:
N:
Z:
C:
mulsathh.h R10, R2:t, R3:b
will perform R10 ← SE( Sat(SE(R2[31:16]) × SE(R3[15:0]) ) >> 15 )
1
0
29
1
0
Rd ← 0x7FFF;
Rd ← SE( (operand1 × operand2) >> 15 );
Set if saturation occurred, or previously set.
Not affected.
Not affected.
Not affected.
Not affected.
28
12
0
11
1
Rx
0
25
0
8
24
0
0
7
0
1
6
0
0
5
0
X
4
20
0
Y
3
19
Ry
Rd
AVR32
0
16
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