LPC1767FBD100,551 NXP Semiconductors, LPC1767FBD100,551 Datasheet - Page 653

• Manufacturer Part Number: LPC1767FBD100,551
• Description: IC ARM CORTEX MCU 512K 100-LQFP
• Manufacturer: NXP Semiconductors
• Series: LPC17xxr

Specifications of LPC1767FBD100,551

• Core Processor: ARM® Cortex-M3™
• Core Size: 32-Bit
• Speed: 100MHz
• Connectivity: Ethernet, I²C, IrDA, Microwire, SPI, SSI, UART/USART
• Peripherals: Brown-out Detect/Reset, DMA, I²S, Motor Control PWM, POR, PWM, WDT
• Number Of I /o: 70
• Program Memory Size: 512KB (512K x 8)
• Program Memory Type: FLASH
• Ram Size: 64K x 8
• Voltage - Supply (vcc/vdd): 2.4 V ~ 3.6 V
• Data Converters: A/D 8x12b, D/A 1x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 100-LQFP
• Processor Series: LPC17
• Core: ARM Cortex M3
• 3rd Party Development Tools: MDK-ARM, RL-ARM, ULINK2, MCB1760, MCB1760U, MCB1760UME
• For Use With: 622-1005 - USB IN-CIRCUIT PROG ARM7 LPC2K
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details
• Other names: 568-4967; 935289808551

NXP Semiconductors
UM10360
User manual
34.2.3.4.1 ASR
34.2.3.4.2 LSR
The permitted shift lengths depend on the shift type and the instruction, see the individual
instruction description or
shift operations update the carry flag except when the specified shift length is 0. The
following sub-sections describe the various shift operations and how they affect the carry
flag. In these descriptions, Rm is the register containing the value to be shifted, and n is
the shift length.
Arithmetic shift 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 copies the original bit[31] of
the register into the left-hand n bits of the result. See
You can use the ASR #n operation to divide the value in the register Rm by 2
result being rounded towards negative-infinity.
When the instruction is ASRS or when ASR #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
shifted out, bit[n-1], of the register Rm.
Note
Logical shift 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 sets the left-hand n bits of the
result to 0. See
You can use the LSR #n operation to divide the value in the register Rm by 2
is regarded as an unsigned integer.
When the instruction is LSRS or when LSR #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
shifted out, bit[n-1], of the register Rm.
Note
Fig 141. ASR #3
•
•
•
If n is 32 or more, then all the bits in the result are set to the value of bit[31] of Rm.
If n is 32 or more and the carry flag is updated, it is updated to the value of bit[31] of
Rm.
If n is 32 or more, then all the bits in the result are cleared to 0.
31
All information provided in this document is subject to legal disclaimers.
Figure
Rev. 2 — 19 August 2010
142.
Section
34.2.3.3. If the shift length is 0, no shift occurs. Register
...
Chapter 34: Appendix: Cortex-M3 user guide
Figure
141.
5
4
3
UM10360
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© NXP B.V. 2010. All rights reserved.
1 0
n
, if the value
n
, with the
Carry
Flag
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