LPC1113FHN33/203,5 NXP Semiconductors, LPC1113FHN33/203,5 Datasheet - Page 461
LPC1113FHN33/203,5
Manufacturer Part Number
LPC1113FHN33/203,5
Description
ARM Microcontrollers - MCU Cortex-M0 24 kB flash up to 8kB SRAM
Manufacturer
NXP Semiconductors
Datasheet
1.LPC1113FHN333035.pdf
(538 pages)
Specifications of LPC1113FHN33/203,5
Rohs
yes
Core
ARM Cortex M0
Processor Series
LPC1113
Data Bus Width
32 bit
Maximum Clock Frequency
50 MHz
Program Memory Size
24 KB
Data Ram Size
4 KB
On-chip Adc
Yes
Operating Supply Voltage
1.8 V to 3.6 V
Operating Temperature Range
- 65 C to + 150 C
Package / Case
HVQFN-33
Mounting Style
SMD/SMT
Factory Pack Quantity
260
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UM10398
User manual
28.4.3.6.2 Exception return
Sufficient priority means the exception has greater priority than any limit set by the mask
register, see
is not handled by the processor.
When the processor takes an exception, unless the exception is a tail-chained or a
late-arriving exception, the processor pushes information onto the current stack. This
operation is referred to as stacking and the structure of eight data words is referred as a
stack frame. The stack frame contains the following information:
Immediately after stacking, the stack pointer indicates the lowest address in the stack
frame. The stack frame is aligned to a double-word address.
The stack frame includes the return address. This is the address of the next instruction in
the interrupted program. This value is restored to the PC at exception return so that the
interrupted program resumes.
The processor performs a vector fetch that reads the exception handler start address from
the vector table. When stacking is complete, the processor starts executing the exception
handler. At the same time, the processor writes an EXC_RETURN value to the LR. This
indicates which stack pointer corresponds to the stack frame and what operation mode
the processor was in before the entry occurred.
If no higher priority exception occurs during exception entry, the processor starts
executing the exception handler and automatically changes the status of the
corresponding pending interrupt to active.
If another higher priority exception occurs during exception entry, the processor starts
executing the exception handler for this exception and does not change the pending
status of the earlier exception. This is the late arrival case.
Exception return occurs when the processor is in Handler mode and execution of one of
the following instructions attempts to set the PC to an EXC_RETURN value:
The processor saves an EXC_RETURN value to the LR on exception entry. The
exception mechanism relies on this value to detect when the processor has completed an
exception handler. Bits[31:4] of an EXC_RETURN value are 0xFFFFFFF. When the
processor loads a value matching this pattern to the PC it detects that the operation is a
Fig 101. Exception entry stack contents
•
•
a POP instruction that loads the PC
a BX instruction using any register.
Section
Chapter 28: LPC111x/LPC11Cxx Appendix: ARM Cortex-M0 reference
All information provided in this document is subject to legal disclaimers.
Rev. 12 — 24 September 2012
28–28.4.1.3.6. An exception with less priority than this is pending but
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© NXP B.V. 2012. All rights reserved.
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