lpc11Exx

AN11153 and AN11154: LPC11xx/LPC11Uxx DMX512 with RDM

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DMX_RDM_LPC11xx_release1.0.zip15.05 MB
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1.0
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YES

 The DMX512 Software Development Kit (SDK) for the LPC11xx/LPC11Uxx installer contains:

Project home page: 

DALI on LPC Microcontrollers

 

DALI Software Development Kit

 

KNX on LPC Microcontrollers

 

Building automation systems based on KNX communication protocols

 

LPCOpen processor, board, and toolchain support

LPCOpen processor, board, and toolchain support

Examples were build tested with the following toolchain versions - this only applies to the latest LPCopen version.

IAR EWARM v1.02, Keil UV4 v4.70, LPCXpresso v5.2.4_2122

Supported project list for IAR EWARM v1.02

LPCOpen upcoming releases

Keep an eye on this page for information on upcoming releases of LPCOpen. Features, updated drivers, and new devices/boards are continuously be added to LPCOpen, but the planned release dates and features may change without notice!

Would you like to request a feature for LPCOpen? You can request new features on the NXP support page.

Software Encryption for NXP ARM Microcontrollers

Introduction

Errata sheet LPC11E3x (ES_LPC11E3x)

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Rev. 1 — 1 February 2013
NXP verified: 
YES

This errata sheet describes both the known functional problems and any
deviations from the electrical specifications known at the release date of
this document.
Each deviation is assigned a number and its history is tracked in a table.

LPC11Exx用户手册(简体中文)

LPC微控制器's picture
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LPC11Exx_UM_Simp_Chinese.pdf7.02 MB
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修订版:1 - 2012年2月8日
NXP verified: 
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LPC11Exx简体中文用户手册

LPC11E1x是基于ARM Cortex-M0的低成本32位MCU系列产品,专用于8位或16位微控制器应用。它性能高、功耗低,支持简单指令集和内存寻址,与现有的8位或16位架构相比,代码尺寸更小。
LPC11E1x以高达50MHz的CPU频率工作。LPC11E1x上的补充外设包括高达32kB的闪存、10kB SRAM数据存储器和4kB EEPROM、一个超快速模式I2C总线接口、一个支持同步模式和智能卡接口的RS-485/EIA-485 USART、两个SSP接口、四个通用计数器/定时器、一个10位ADC和最多54个通用I/O引脚。

LPC11E1x产品数据手册(简体中文)

LPC微控制器's picture
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LPC11E1X v.1CDS_DS_Simp_Chinese.pdf2.38 MB
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File version: 
修订版:1 - 2012年2月20日
NXP verified: 
YES

LPC11E1x简体中文数据手册

LPC11E1x是基于ARM Cortex-M0的低成本32位MCU系列产品,专用于8位或16位微控制器应用。它性能高、功耗低,支持简单指令集和内存寻址,与现有的8位或16位架构相比,代码尺寸更小。
LPC11E1x以高达50MHz的CPU频率工作。
LPC11E1x上的补充外设包括高达32kB的闪存、10kB SRAM数据存储器和4kB EEPROM、一个超快速模式I2C总线接口、一个支持同步模式和智能卡接口的RS-485/EIA-485 USART、两个SSP接口、四个通用计数器/定时器、一个10位ADC和最多54个通用I/O引脚。

How to calculate the value of crystal load capacitors?

Oscillator

The following formula may be used to calculate a parallel resonant crystal's external load capacitors:
CL = ((CX1 x CX2) / (CX1 + CX2)) + Cstray
where:
CL = the crystal load capacitance
Cstray = the stray capacitance in the oscillator circuit, which will normally be in the 2pF to 5pF range.

Assuming that CX1=CX2 then the equation becomes:
CL = ((CX1 x CX1) / (2 x CX1)) + Cstray
CL = (CX1 / 2) + Cstray
Rearranging the equation, we can find the external load capacitor value:
CX1 = 2(CL - Cstray)

For example, if the crystal load capacitance is 15pF, and assuming Cstray=2pF, then:

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