ATSAM3S4CA-CU Atmel, ATSAM3S4CA-CU Datasheet - Page 83

• Manufacturer Part Number: ATSAM3S4CA-CU
• Description: IC MCU 32BIT 256KB FLASH 100BGA
• Manufacturer: Atmel
• Series: SAM3Sr

Specifications of ATSAM3S4CA-CU

• Core Processor: ARM® Cortex-M3™
• Core Size: 32-Bit
• Speed: 64MHz
• Connectivity: EBI/EMI, I²C, MMC, SPI, SSC, UART/USART, USB
• Peripherals: Brown-out Detect/Reset, DMA, I²S, POR, PWM, WDT
• Number Of I /o: 79
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 48K x 8
• Voltage - Supply (vcc/vdd): 1.62 V ~ 1.95 V
• Data Converters: A/D 16x10/12b, D/A 2x12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 100-LFBGA
• Processor Series: ATSAM3x
• Core: ARM Cortex M3
• 3rd Party Development Tools: JTRACE-CM3, MDK-ARM, RL-ARM, ULINK2
• Development Tools By Supplier: ATSAM3S-EK
• Package: 100LFBGA
• Device Core: ARM Cortex M3
• Family Name: AT91
• Maximum Speed: 64 MHz
• Operating Supply Voltage: 1.8|3.3 V
• Data Bus Width: 32 Bit
• Number Of Programmable I/os: 79
• Interface Type: I2C/I2S/SPI/UART/USART/USB
• On-chip Adc: 16-chx12-bit
• On-chip Dac: 2-chx12-bit
• Number Of Timers: 6
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details

10.11.4.4
10.11.4.5
10.11.5
6500C–ATARM–8-Feb-11
Address alignment
ROR
RRX
Rotate right by n bits moves the left-hand 32-n bits of the register Rm, to the right by n places,
into the right-hand 32-n bits of the result. And it moves the right-hand n bits of the register into
the left-hand n bits of the result. See
When the instruction is RORS or when ROR #n is used in Operand2 with the instructions MOVS,
MVNS, ANDS, ORRS, ORNS, EORS, BICS, TEQ or TST, the carry flag is updated to the last bit
rotation, bit[n-1], of the register Rm.
Figure 10-7. ROR #3
Rotate right with extend moves the bits of the register Rm to the right by one bit. And it copies
the carry flag into bit[31] of the result. See
When the instruction is RRXS or when RRX is used in Operand2 with the instructions MOVS,
MVNS, ANDS, ORRS, ORNS, EORS, BICS, TEQ or TST, the carry flag is updated to bit[0] of
the register Rm.
Figure 10-8. RRX
An aligned access is an operation where a word-aligned address is used for a word, dual word,
or multiple word access, or where a halfword-aligned address is used for a halfword access.
Byte accesses are always aligned.
The Cortex-M3 processor supports unaligned access only for the following instructions:
• If n is 32, then the value of the result is same as the value in Rm, and if the carry flag is
• ROR with shift length, n, more than 32 is the same as ROR with shift length n-32.
• LDR, LDRT
• LDRH, LDRHT
• LDRSH, LDRSHT
• STR, STRT
• STRH, STRHT
updated, it is updated to bit[31] of Rm.
31
31 30
...
Figure
...
Figure 10-8 on page
10-7.
SAM3S Preliminary
83.
5
4
3
...
2
1 0
1 0
Carry
Carry
Flag
Flag
83