参数资料
型号: LPC11U23FBD48/301,
厂商: NXP Semiconductors
文件页数: 16/74页
文件大小: 0K
描述: MCU USB 48LQFP
产品培训模块: Code Density for LPC11xx
标准包装: 250
系列: LPC11Uxx
核心处理器: ARM? Cortex?-M0
芯体尺寸: 32-位
速度: 50MHz
连通性: I²C,Microwire,SPI,SSI,SSP,UART/USART,USB
外围设备: 欠压检测/复位,POR,WDT
输入/输出数: 40
程序存储器容量: 24KB(24K x 8)
程序存储器类型: 闪存
EEPROM 大小: 1K x 8
RAM 容量: 8K x 8
电压 - 电源 (Vcc/Vdd): 1.8 V ~ 3.6 V
数据转换器: A/D 8x10b
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 48-LQFP
包装: 托盘
其它名称: 568-8520
LPC11U23FBD48/301,-ND
LPC11U2X
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2014. All rights reserved.
Product data sheet
Rev. 2.2 — 11 March 2014
23 of 74
NXP Semiconductors
LPC11U2x
32-bit ARM Cortex-M0 microcontroller
7.17.1.1
Internal RC oscillator
The IRC can be used as the clock source for the WDT, and/or as the clock that drives the
system PLL and then the CPU. The nominal IRC frequency is 12 MHz.
Upon power-up, any chip reset, or wake-up from Deep power-down mode, the LPC11U2x
use the IRC as the clock source. Software can later switch to one of the other available
clock sources.
Fig 7.
LPC11U2x clocking generation block diagram
system oscillator
watchdog oscillator
IRC oscillator
USB PLL
USBPLLCLKSEL
(USB clock select)
SYSTEM CLOCK
DIVIDER
SYSAHBCLKCTRLn
(AHB clock enable)
CPU, system control,
PMU
memories,
peripheral clocks
SSP0 PERIPHERAL
CLOCK DIVIDER
SSP0
SSP1 PERIPHERAL
CLOCK DIVIDER
SSP1
USART PERIPHERAL
CLOCK DIVIDER
UART
WDT
WDCLKSEL
(WDT clock select)
USB 48 MHz CLOCK
DIVIDER
USB
USBUEN
(USB clock update enable)
watchdog oscillator
IRC oscillator
system oscillator
CLKOUT PIN CLOCK
DIVIDER
CLKOUT pin
CLKOUTUEN
(CLKOUT update enable)
002aaf892
system clock
SYSTEM PLL
IRC oscillator
system oscillator
watchdog oscillator
MAINCLKSEL
(main clock select)
SYSPLLCLKSEL
(system PLL clock select)
main clock
IRC oscillator
n
相关PDF资料
PDF描述
1734028-2 CONN USB PLUG R/A SMD NATURAL
787617-6 CONN DUAL 4POS USB TYPE A R/A
787617-5 CONN DUAL 4POS USB TYPE A R/A
787617-4 CONN DUAL 4POS USB TYPE A R/A
787617-3 CONN DUAL 4POS USB TYPE A R/A
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