SAM4S16C Atmel Corporation, SAM4S16C Datasheet - Page 131

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SAM4S16C

Manufacturer Part Number
SAM4S16C
Description
Manufacturer
Atmel Corporation
Datasheets

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
11.6.5.20
11100A–ATARM–28-Oct-11
11100A–ATARM–28-Oct-11
UHSUB16 and UHSUB8
Unsigned Halving Subtract 16 and Unsigned 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
UHSUB16 R1, R0
UHSUB8 R4, R0, R5 ; Subtracts bytes of R5 from corresponding byte in R0 and
1. Subtracts each halfword of the second operand from the corresponding halfword of the
2. Shuffles each halfword result to the right by one bit, halving the data.
3. Writes each unsigned halfword result to the corresponding halfwords in the destination
1. Subtracts each byte of second operand from the corresponding byte of the first
2. Shuffles each byte result by one bit to the right, halving the data.
3. Writes the unsigned byte results to the corresponding byte of the destination register.
UHSUB16
UHSUB8
first operand.
register.
operand.
instruction:
instruction:
is any of:
UHSUB16
the results to the destination register.
UHSUB8
the results to the destination register.
is an optional condition code, see
is the destination register.
is the first register holding the operand.
is the second register holding the operand.
Performs four unsigned 8-bit integer additions, halves the results, and writes
; Subtracts halfwords in R0 from corresponding halfword of
Performs two unsigned 16-bit integer additions, halves the results, and writes
; R1 and writes halved result to corresponding halfword in
; R1
; writes halved result to corresponding byte in R4.
.
“Conditional Execution”
.
SAM4S
SAM4S
131
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