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High-performance, Power-efficient and Cost Sensitive Arm? Cortex?-M0+ MCUs
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High-performance, Power-efficient and Cost Sensitive Arm? Cortex?-M0+ MCUs

High-performance, Power-efficient and Cost Sensitive Arm? Cortex?-M0+ MCUs
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LPC51U68 MCU

 

 

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Arm Cortex-M0+ core

  • Running at a frequency of up to 150 MHz
  • Single-cycle multiplier
  • Built-in nested vectored interrupt controller (NVIC)
  • Non-maskable interrupt (NMI) with a selection of sources

On-chip memory

  • 256 KB on-chip flash programming memory with flash accelerator and 256 Byte page write and erase
  • Up to 96 KB total SRAM composed of up to 64 KB main SRAM, plus an additional 32 KB SRAM

ROM API support

  • Flash in-application programming (IAP) and in-system programming (ISP)
  • ROM-based USB drivers (HID, CDC, MSC, DFU)and flash updates via USB
  • Booting from valid user code in flash, USART, SPI, and I2C
  • Legacy, single, and dual image boot

Serial interfaces

  • Eight flexcomm interface serial peripherals. Each can be selected by software to be a USART, SPI, or I2C interface. Two flexcomm interfaces also include an I2S interface, for a total of 2 channel pairs. Each flexcomm interface includes a FIFO that supports USART, SPI, and I2S if supported by that flexcomm interface. A variety of clocking options are available to each flexcomm interface and include a shared fractional rate generator
  • I2C supports fast-mode and fast-mode Plus with data rates of up to 1 Mbit/s and with multiple address recognition and monitor mode. Two sets of true open drain I2C pins also support high-speed Mode (up to 3.4 Mbit/s) as a target
  • USB full-speed device interface with option for crystal-less operation

Digital peripherals

  • DMA controller with 18 channels and 16 programmable triggers, able to access all memories and DMA-capable peripherals
  • Up to 48 general-purpose I/O (GPIO) pins. Most GPIOs have configurable pull-up/pull-down resistors, open-drain mode, and input inverter
  • GPIO registers are located on AHB for fast access
  • Up to four GPIOs can be selected as pin interrupts (PINT), triggered by rising, falling or both input edges
  • Two GPIO grouped interrupts (GINT) enable an interrupt based on a logical (AND/OR) combination of input states
  • CRC engine

Analog peripherals

  • 12-bit ADC with 12 input channels and multiple internal and external trigger inputs and sample rates of up to 5.0 MSamples/sec. The ADC supports two independent conversion sequences
  • Integrated temperature sensor connected to the ADC

Timers

  • Three standard general purpose timers/counters, four of which support up to 4 capture inputs and 4 compare outputs, PWM mode, and external count input. Specific timer events can be selected to generate DMA requests
  • One SCTimer/PWM (SCT) 8 input and 8 output functions (including capture and match). Inputs and outputs can be routed to/from external pins and internally to/from selected peripherals. Internally, the SCT supports 10 captures/matches, 10 events and 10 states
  • 32-bit Real-time clock (RTC) with 1s resolution running in the always-on power domain. A high-resolution timer in the RTC can be used for wake-up from all low power modes including deep power-down with 1ms resolution
  • Multiple-channel, multi-rate 24-bit timer (MRT) for repetitive interrupt generation at up to four programmable fixed rates
  • Windowed watchdog timer (WWDT)
  • Ultra-low power micro-tick Timer, running from the watchdog oscillator, that can be used to wake up the device from most low power modes

Clock generation

  • Internal FRO oscillator, factory trimmed for accuracy, that can optionally be used as a system clock as well as other purposes. This oscillator provides a selectable 48 MHz or 96 MHz output, and a 12 MHz output (divided down from the selected higher frequency) that can optionally be used as a system clock as well as other purposes
  • External clock input for up to 25 MHz
  • Watchdog oscillator with a frequency range of 6 kHz to 1.5 MHz
  • 32 kHz low-power RTC oscillator
  • System PLL allows CPU operation up to the maximum CPU rate without the need for a high-frequency external clock. Maybe run from the internal FRO 12 MHz output, the external clock input CLKIN, or the RTC oscillator
  • Clock output function with divider that can reflect many internal clocks
  • Frequency measurement unit for measuring the frequency of an on-chip or off-chip clock signal

Power control

  • Integrated PMU (Power Management Unit) to minimize power consumption
  • Reduced power modes: sleep mode, deep-sleep mode, and deep power-down mode
  • Wake-up from deep-sleep mode on activity on USART, SPI, and I2C peripherals when operating as followers
  • Wake-up from sleep, deep-sleep and deep power-down modes from the RTC alarm
  • The micro-tick Timer can wake-up the device from most reduced power modes by using the watchdog oscillator when no other on-chip resources are running, for ultra-low power wake-up
  • Power-On Reset (POR)
  • Brownout detect

Additional information

  • Single power supply 1.62 V to 3.6 V
  • JTAG boundary scan supported
  • Serial wire debug (SWD) with 4 breakpoints and 2 watchpoints
  • Unique device serial number for identification
  • Operating temperature range of -40 °C to +105 °C
  • Available as LQFP64 and LQFP48 packages

Target Applications

  • High-performance gaming keyboard/mice
  • Industrial grade USB to serial port bridge
  • E-meter
  • Fingerprint recognition
  • USB audio device
  • Sensor hub with USB interface
  • Entry-level mobile POS

 

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    LPC51U68 Data SheetÁÁµã

    PDF  °æ±¾ 1.5  Dec 17, 2020  4.0 MB  LPC51U68  Ó¢Óï
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    How to Trigger and Detect Transmission Errors for LPC51U68 I2C

    PDF  °æ±¾ 0  Apr 20, 2021  3.5 MB  AN13238  Ó¢Óï  Ïà¹ØÎļþ: AN13238SW
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    Porting USB Bootloader from LPC54018 to LPC51U68

    PDF  °æ±¾ 0  Feb 11, 2020  1.2 MB  AN12689  Ó¢Óï  Ïà¹ØÎļþ: AN12689SW
     
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    LPC51U68 User Manual

    PDF  °æ±¾ 1.2  Jan 13, 2020  11.8 MB  UM11071  Ó¢Óï  ÇëµÇ¼
     
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    Software package for AN1304

    ZIP °æ±¾ 0  Nov 10, 2020  55.0 MB  AN13040SW  Ó¢Óï
     
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    LPC51U68 MCUs – Fact Sheet

    PDF  °æ±¾ 1  Apr 18, 2018  357.3 KB  LPC51U68FAMFS  Ó¢Óï
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    LPCXpresso51U68 development board (OM40005) User Manual.

    PDF  °æ±¾ 1.2  Aug 7, 2018  940.4 KB  UM11121  Ó¢Óï  ÇëµÇ¼
     
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    How to use SCT to generate PWM and control BLDC motor on LPC51U68

    PDF  °æ±¾ 0  Nov 10, 2020  4.0 MB  AN13040  Ó¢Óï  Ïà¹ØÎļþ: AN13040SW
     
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    LPC51U68 Crystal-less USB Solution

    ZIP  °æ±¾ 1.0  May 17, 2018  22.0 MB  TN00035  Ó¢Óï
     
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    Application note software for AN1323

    ZIP  °æ±¾ 0  Apr 20, 2021  113.6 MB  AN13238SW  Ó¢Óï
     
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    LPC51U68 Errata Sheet

    PDF  °æ±¾ 1.3  May 17, 2018  85.2 KB  ES_LPC51U68  Ó¢Óï

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    IBIS files for LPC51U68

    ZIP  °æ±¾ 0  Oct 21, 2020  256.4 KB  IBIS-LPC51U6X-FAMILY
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    LPCXpresso51U68 development board (OM40005) schematic (PDF), BOM and Gerber files.

    ZIP  °æ±¾ A  Apr 30, 2018  941.0 KB  OM40005_DF  ÇëµÇ¼

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