ATUC256L4U Atmel Corporation, ATUC256L4U Datasheet - Page 291

• 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
PSUBH.{UB/SH} – Packed Subtraction with Halving
Architecture revision:
Architecture revision1 and higher.
Description
Perform subtraction of four pairs of packed unsigned bytes (psub.ub) or two pairs of signed half-
words (psub.sh) with a halfing of the result to prevent any overflows from occuring.
Operation:
I.
II.
Syntax:
I.
II.
Operands:
I, II.
Status Flags:
Opcode:
31
31
1
15
0
1
15
0
Rd[31:24] ← LSR(ZE(Rx[31:24], 9) - ZE(Ry[31:24], 9), 1);
Rd[23:16] ← LSR(ZE(Rx[23:16], 9) - ZE(Ry[23:16], 9), 1);
Rd[15:8] ← LSR(ZE(Rx[15:8], 9) - ZE(Ry[15:8], 9), 1);
Rd[7:0] ← LSR(ZE(Rx[7:0], 9) - ZE(Ry[7:0], 9), 1);
Rd[31:16] ← ASR(SE(Rx[31:16], 17) - SE(Ry[31:16], 17), 1);
Rd[15:0] ← ASR(SE(Rx[15:0], 17) - SE(Ry[15:0], 17), 1);
psubh.ub
psubh.sh
{d, x, y} ∈ {0, 1, …, 15}
Q:
V:
N:
Z:
C:
Format I:
Format II:
1
0
1
0
29
29
1
1
1
1
Not affected.
Not affected.
Not affected.
Not affected.
Not affected.
28
28
0
0
Rd, Rx, Ry
Rd, Rx, Ry
0
0
Rx
Rx
0
0
25
1
25
0
24
0
1
24
0
0
0
0
0
1
1
1
0
0
0
1
0
0
4
4
20
0
1
20
0
1
3
3
19
19
Ry
Rd
Ry
Rd
AVR32
0
0
16
16
291