LPC1114FHN33/203,5 NXP Semiconductors, LPC1114FHN33/203,5 Datasheet - Page 454

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LPC1114FHN33/203,5

Manufacturer Part Number
LPC1114FHN33/203,5
Description
ARM Microcontrollers - MCU Cortex-M0 32 kB Fl 8 kB SRAM
Manufacturer
NXP Semiconductors
Datasheet

Specifications of LPC1114FHN33/203,5

Rohs
yes
Core
ARM Cortex M0
Processor Series
LPC1114
Data Bus Width
32 bit
Maximum Clock Frequency
50 MHz
Program Memory Size
32 KB
Data Ram Size
8 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
NXP Semiconductors
UM10398
User manual
28.4.2.2 Memory system ordering of memory accesses
28.4.2.3 Behavior of memory accesses
Strongly-ordered — The processor preserves transaction order relative to all other
transactions.
The different ordering requirements for Device and Strongly-ordered memory mean that
the memory system can buffer a write to Device memory, but must not buffer a write to
Strongly-ordered memory.
The additional memory attributes include.
Execute Never (XN) — Means the processor prevents instruction accesses. A HardFault
exception is generated on executing an instruction fetched from an XN region of memory.
For most memory accesses caused by explicit memory access instructions, the memory
system does not guarantee that the order in which the accesses complete matches the
program order of the instructions, providing any re-ordering does not affect the behavior of
the instruction sequence. Normally, if correct program execution depends on two memory
accesses completing in program order, software must insert a memory barrier instruction
between the memory access instructions, see
However, the memory system does guarantee some ordering of accesses to Device and
Strongly-ordered memory. For two memory access instructions A1 and A2, if A1 occurs
before A2 in program order, the ordering of the memory accesses caused by two
instructions is:
Where:
- — Means that the memory system does not guarantee the ordering of the accesses.
< — Means that accesses are observed in program order, that is, A1 is always observed
before A2.
The behavior of accesses to each region in the memory map is:
Fig 98. Memory ordering restrictions
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
Section
28–28.4.2.4.
UM10398
© NXP B.V. 2012. All rights reserved.
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