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Manufacturer Part #


LPC21xx Series 16 kB Flash 4 kB RAM 70 MHz 16/32-Bit Microcontroller - LQFP-48

Mfr. Name: NXP
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Technical Attributes
Attributes Table
Family Name: LPC21xx
Core Processor: ARM7
Program Memory Type: Flash
Flash Size (Bytes): 16kB
RAM Size: 4kB
Speed: 70MHz
No of I/O Lines: 32
InterfaceType / Connectivity: I2C/SPI/SSP/UART
Peripherals: I2C/On-Chip-ADC/SPI/SSP/UART/Watchdog
Number Of Timers: 4
Supply Voltage: 1.65V to 1.95V
Operating Temperature: -40°C to +85°C
On-Chip ADC: 8-chx10-bit
Watchdog Timers: 1
Package Style:  LQFP-48
Mounting Method: Surface Mount
Features & Applications

The LPC2101/02/03 microcontrollers are based on a 16-bit/32-bit ARM7TDMI-S CPU with real-time emulation that combines the microcontroller with 8 kB, 16 kB or 32 kB of embedded high-speed flash memory. A 128-bit wide memory interface and a unique accelerator architecture enable 32-bit code execution at the maximum clock rate. For critical performance in interrupt service routines and DSP algorithms, this increases performance up to 30 % over Thumb mode. For critical code size applications, the alternative 16-bit Thumb mode reduces code by more than 30 % with minimal performance penalty.

Enhanced features are available in parts LPC2101/02/03 labelled Revision A and higher :

  • Deep power-down mode with option to retain SRAM memory and/or RTC.
  • Three levels of flash Code Read Protection (CRP) implemented.

Key features :

  • 16-bit/32-bit ARM7TDMI-S microcontroller in tiny LQFP48 and HVQFN48 packages.
  • 2 kB/4 kB/8 kB of on-chip static RAM and 8 kB/16 kB/32 kB of on-chip flash program memory. 128-bit wide interface/accelerator enables high-speed 70 MHz operation.
  • ISP/IAP via on-chip bootloader software. Single flash sector or full chip erase in 100 ms and programming of 256 bytes in 1 ms. 
  • EmbeddedICE-RT offers real-time debugging with the on-chip RealMonitor software.
  • The 10-bit ADC provides eight analog inputs, with conversion times as low as 2.44 ms per channel and dedicated result registers to minimize interrupt overhead.
  • Two 32-bit timers/external event counters with combined seven capture and seven compare channels.
  • Two 16-bit timers/external event counters with combined three capture and seven compare channels.
  • Low power Real-Time Clock (RTC) with independent power and dedicated 32 kHz clock input.
  • Multiple serial interfaces including two UARTs (16C550), two Fast I2C-buses (400 kbit/s), SPI and SSP with buffering and variable data length capabilities.
  • Vectored interrupt controller with configurable priorities and vector addresses.
  • Up to thirty-two, 5 V tolerant fast general purpose I/O pins.
  • Up to 13 edge or level sensitive external interrupt pins available.
  • 70 MHz maximum CPU clock available from programmable on-chip PLL with a possible input frequency of 10 MHz to 25 MHz and a settling time of 100 ms.
  • On-chip integrated oscillator operates with an external crystal in the range from 1 MHz to 25 MHz.
  • Power saving modes include Idle mode, Power-down mode with RTC active, and Power-down mode.
  • Individual enable/disable of peripheral functions as well as peripheral clock scaling for additional power optimization.
  • Processor wake-up from Power-down and Deep power-down (Revision A and higher) mode via external interrupt or RTC.




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12 Weeks
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