SAM3N4B Atmel Corporation, SAM3N4B Datasheet - Page 105
SAM3N4B
Manufacturer Part Number
SAM3N4B
Description
Manufacturer
Atmel Corporation
Specifications of SAM3N4B
Flash (kbytes)
256 Kbytes
Pin Count
64
Max. Operating Frequency
48 MHz
Cpu
Cortex-M3
# Of Touch Channels
32
Hardware Qtouch Acquisition
No
Max I/o Pins
79
Ext Interrupts
79
Quadrature Decoder Channels
2
Usb Speed
No
Usb Interface
No
Spi
3
Twi (i2c)
2
Uart
4
Ssc
1
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
10
Adc Resolution (bits)
10
Adc Speed (ksps)
384
Resistive Touch Screen
No
Dac Channels
1
Dac Resolution (bits)
10
Temp. Sensor
No
Crypto Engine
No
Sram (kbytes)
24
Self Program Memory
YES
Dram Memory
No
Nand Interface
No
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
no / no
Timers
6
Output Compare Channels
6
Input Capture Channels
3
Pwm Channels
4
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes
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10.13.1
10.13.1.1
10.13.1.2
10.13.1.3
11011A–ATARM–04-Oct-10
ADD, ADC, SUB, SBC, and RSB
Syntax
Operation
Restrictions
Add, Add with carry, Subtract, Subtract with carry, and Reverse Subtract.
where:
op
S
result of the operation, see
cond
Rd
Rn
Operand2
imm12
The ADD instruction adds the value of Operand2 or imm12 to the value in Rn.
The ADC instruction adds the values in Rn and Operand2, together with the carry flag.
The SUB instruction subtracts the value of Operand2 or imm12 from the value in Rn.
The SBC instruction subtracts the value of Operand2 from the value in Rn. If the carry flag is
clear, the result is reduced by one.
The RSB instruction subtracts the value in Rn from the value of Operand2. This is useful
because of the wide range of options for Operand2.
Use ADC and SBC to synthesize multiword arithmetic, see
page
See also
ADDW is equivalent to the ADD syntax that uses the imm12 operand. SUBW is equivalent to the
SUB syntax that uses the imm12 operand.
In these instructions:
• Operand2 must not be SP and must not be PC
op{S}{cond} {Rd,} Rn, Operand2
op{cond} {Rd,} Rn, #imm12
107.
ADD
ADC
SUB
SBC
RSB
“ADR” on page
is one of:
Add.
Add with Carry.
Subtract.
Subtract with Carry.
Reverse Subtract.
is an optional suffix. If S is specified, the condition code flags are updated on the
is an optional condition code, see
is the destination register. If Rd is omitted, the destination register is Rn.
is the register holding the first operand.
is a flexible second operand.
See
is any value in the range 0-4095.
“Flexible second operand” on page 80
88.
“Conditional execution” on page
“Conditional execution” on page
; ADD and SUB only
for details of the options.
84.
“Multiword arithmetic examples” on
84.
SAM3N
105
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