SAM4S16C Atmel Corporation, SAM4S16C Datasheet - Page 122

• Manufacturer Part Number: SAM4S16C
• Manufacturer: Atmel Corporation

Specifications of SAM4S16C

• Flash (kbytes): 1024 Kbytes
• Pin Count: 100
• # Of Touch Channels: 32
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 79
• Ext Interrupts: 79
• Usb Transceiver: 1
• Quadrature Decoder Channels: 2
• Usb Speed: Full Speed
• Usb Interface: Device
• Spi: 3
• Twi (i2c): 2
• Uart: 4
• Ssc: 1
• Sd / Emmc: 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 16
• Adc Resolution (bits): 12
• Adc Speed (ksps): 1000
• Analog Comparators: 1
• Resistive Touch Screen: No
• Dac Channels: 2
• Dac Resolution (bits): 12
• Temp. Sensor: Yes
• Crypto Engine: No
• Sram (kbytes): 128
• Self Program Memory: YES
• External Bus Interface: 1
• Dram Memory: No
• Nand Interface: Yes
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 1.8/3.3
• Operating Voltage (vcc): 1.62 to 3.6
• Fpu: No
• Mpu / Mmu: Yes / No
• Timers: 6
• Output Compare Channels: 6
• Input Capture Channels: 6
• Pwm Channels: 4
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

11.6.5.12
122
122
SAM4S
SAM4S
SHSUB16 and SHSUB8
Signed Halving Subtract 16 and Signed Halving Subtract 8
Syntax
op{cond}{Rd,} Rn, Rm
where:
op
cond
Rd
Rn
Rm
Operation
Use these instructions to add 16-bit and 8-bit data and then to halve the result before writing the
result to the destination register:
The
The
Restrictions
Do not use SP and do not use PC
Condition Flags
These instructions do not change the flags.
Examples
SHSUB16 R1, R0
SHSUB8 R4, R0, R5 ; Subtracts bytes of R0 from corresponding byte in R5,
1. Subtracts each halfword of the second operand from the corresponding halfwords of
2. Shuffles the result by one bit to the right, halving the data.
3. Writes the halved halfword results in the destination register.
1. Subtracts each byte of the second operand from the corresponding byte of the first
2. Shuffles the result by one bit to the right, halving the data,
3. Writes the corresponding signed byte results in the destination register.
SHSUB16
SHSUBB8
the first operand.
operand,
instruction:
instruction:
is any of:
SHSUB16
SHSUB8
is an optional condition code, see
is the destination register.
is the first operand register.
is the second operand register
; Subtracts halfwords in R0 from corresponding halfword
; of R1 and writes to corresponding halfword of R1
; and writes to corresponding byte in R4.
; of R3 and writes halved result to top halfword of R0
; Adds top halfword of R5 to bottom halfword of R3 and
; writes halved result to bottom halfword of R0.
Signed Halving Subtract 8
Signed Halving Subtract 16
.
“Conditional Execution”
.
11100A–ATARM–28-Oct-11
11100A–ATARM–28-Oct-11