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参数资料
| 型号： | MCB1114 |
| 厂商： | Keil |
| 文件页数： | 24/53页 |
| 文件大小： | 0K |
| 描述： | BOARD EVALUATION FOR NXP LPC1114 |
| 产品培训模块： | Code Density for LPC11xx |
| 标准包装： | 1 |
| 类型： | MCU |
| 适用于相关产品： | LPC1114 |
| 所含物品： | 板，线缆 |
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NXP Semiconductors
LPC1111/12/13/14
7.15 Clocking and power control
7.15.1 Crystal oscillators
The LPC1111/12/13/14 include three independent oscillators. These are the system
oscillator, the Internal RC oscillator (IRC), and the Watchdog oscillator. Each oscillator can
be used for more than one purpose as required in a particular application.
Following reset, the LPC1111/12/13/14 will operate from the Internal RC oscillator until
switched by software. This allows systems to operate without any external crystal and the
bootloader code to operate at a known frequency.
See Figure 6 for an overview of the LPC1111/12/13/14 clock generation.
AHB clock 0
SYSTEM CLOCK
DIVIDER
system clock
18
AHBCLKCTRL[1:18]
(AHB clock enable)
(system)
AHB clocks 1 to 18
(memories
and peripherals)
IRC oscillator
main clock
SPI0 PERIPHERAL
CLOCK DIVIDER
SPI0
watchdog oscillator
MAINCLKSEL
(main clock select)
IRC oscillator
system oscillator
SYSTEM PLL
IRC oscillator
watchdog oscilllator
SYSPLLCLKSEL
watchdog oscillator
(system PLL clock select)
WDTUEN
(WDT clock update enable)
IRC oscillator
system oscillator
watchdog oscillator
CLKOUTUEN
(CLKOUT update enable)
Fig 6.
LPC1111/12/13/14 clocking generation block diagram
UART PERIPHERAL
CLOCK DIVIDER
SPI1 PERIPHERAL
CLOCK DIVIDER
SYSTICK TIMER
CLOCK DIVIDER
WDT CLOCK
DIVIDER
CLKOUT PIN CLOCK
DIVIDER
UART
SPI1
SYSTICK
timer
WDT
CLKOUT pin
002aae514
LPC1111_12_13_14_0
? NXP B.V. 2009. All rights reserved.
Objective data sheet
Rev. 00.11 — 13 November 2009
24 of 53
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MCB1114-ED | 制造商:ARM Ltd 功能描述:KEIL NXP LPC1114 EVAL BOARD |
| MCB1114U | 功能描述:开发板和工具包 - ARM EVAL BOARD FOR NXP LPC1114 + ULINK2 RoHS:否 制造商:Arduino 产品:Development Boards 工具用于评估:ATSAM3X8EA-AU 核心:ARM Cortex M3 接口类型:DAC, ICSP, JTAG, UART, USB 工作电源电压:3.3 V |
| MCB1114U-ED | 制造商:ARM Ltd 功能描述:KEIL NXP LPC1114 EVAL BOARD |
| MCB1114UME | 功能描述:开发板和工具包 - ARM EVAL BOARD FOR NXP LPC1114 + ULINK-ME RoHS:否 制造商:Arduino 产品:Development Boards 工具用于评估:ATSAM3X8EA-AU 核心:ARM Cortex M3 接口类型:DAC, ICSP, JTAG, UART, USB 工作电源电压:3.3 V |
| MCB1114UME-ED | 制造商:ARM Ltd 功能描述:KEIL NXP LPC1114 EVAL BOARD |
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