NXP Semiconductors LPC812M101FD20FP

Overview

LPC812M101FD20FP from NXP Semiconductors is a 32-bit ARM Cortex-M0+ microcontroller operating at up to 30 MHz, featuring 16 kB flash, 4 kB SRAM, and 18 GPIO pins. It integrates a State Configurable Timer (SCT), CRC engine, Windowed Watchdog Timer (WWDT), and a comparator with external reference support - deployed in lighting control, motor drive, and climate management systems.

For engineers reviewing the LPC812M101FD20FP datasheet, LPC812M101FD20FP pinout, LPC812M101FD20FP application, or LPC812M101FD20FP equivalent, key selection criteria include SO20 package compatibility, fixed-pin SWD debug interface (SWDIO/SWCLK on PIO0_2/PIO0_3), I2C-bus compliance via dedicated open-drain pins (PIO0_10/PIO0_11), and switch-matrix–enabled peripheral routing for USART, SPI, and SCT functions.

Technical Context

The LPC812M101FD20FP implements an ARM Cortex-M0+ core with single-cycle I/O access and a two-stage pipeline, tightly coupled to NVIC and Micro Trace Buffer (MTB) for real-time debugging. Its clock system includes a 12 MHz ±1% internal RC oscillator, programmable PLL, and multiple low-power oscillators (IRC, WKT, watchdog).

Peripheral flexibility is enabled by the Switch Matrix (SWM), which routes movable functions-including three USARTs (though only two are enabled on this variant), two SPI controllers, one I2C-bus interface, and SCT inputs/outputs-to any non-power/non-ground GPIO pin. Fixed functions (e.g., XTALIN/XTALOUT, RESET, SWDIO/SWCLK) remain bound to specific SO20 pins per Table 3.

Key Specifications

Pinout & Package

Package: SO20 - plastic small outline package, 20 leads, 7.5 mm body width (SOT163-1), suitable for automated SMT assembly and moderate thermal dissipation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microcontroller applications.

Compared with LPC812M101FD20FP, the LPC812M101FDH20 offers identical functionality in a smaller footprint but lacks the mechanical robustness of SO20 for high-vibration environments; the LPC824M201JDH20 adds USB and memory headroom at the cost of higher BOM cost and layout complexity.

Availability

LPC812M101FD20FP is available at Aetrix Electronics and suitable for lighting control, motor drive, and climate management applications requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance across production batches.

Supply support for LPC812M101FD20FP includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

NXP Semiconductors is a global semiconductor leader specializing in secure connectivity solutions for automotive, industrial, and IoT markets, with headquarters in Eindhoven, Netherlands.

The LPC81xM product line was designed for cost-sensitive, low-power embedded control applications - emphasizing peripheral flexibility, ultra-low sleep current, and rapid time-to-market through ROM-based driver libraries and intuitive switch-matrix configuration.

FAQ

What is the maximum operating frequency of the LPC812M101FD20FP?

The LPC812M101FD20FP operates at a maximum CPU frequency of 30 MHz, achieved via its integrated PLL driven by the 12 MHz internal RC oscillator, external crystal (1–25 MHz), or CLKIN. This frequency is sustained across industrial temperature range (−40 °C to +85 °C) with proper decoupling and thermal management on the SO20 package.

Does the LPC812M101FD20FP support in-application programming (IAP)?

Yes, the LPC812M101FD20FP supports In-Application Programming via its on-chip ROM API, enabling firmware updates without external programmer. The ROM-resident IAP routines allow safe flash sector erase/write operations while executing from RAM or protected flash regions - a core capability confirmed in the LPC81xM objective data sheet Rev. 1.0.

How many USART interfaces are functional on the LPC812M101FD20FP?

The LPC812M101FD20FP supports two USART interfaces (USART0 and USART1). Although the LPC81xM family documentation references three USARTs, Table 2 explicitly lists "2" for USART count in the LPC812M101FD20 variant - confirming USART2 is disabled in this SO20 configuration.

Can the LPC812M101FD20FP wake up from Deep power-down mode using GPIO interrupts?

Only PIO0_4 is guaranteed to wake the LPC812M101FD20FP from Deep power-down mode - it is hardwired as the WAKEUP pin. Other GPIO pins support wake-up from Sleep and Deep-sleep modes, but not Deep power-down. This behavior is defined in the Pin Description Table 3 footnote [6] and verified in Section 7.11.

Is the LPC812M101FD20FP pin-compatible with other LPC81xM variants in SO20 package?

Yes, the LPC812M101FD20FP shares identical SO20 pinout (SOT163-1) and fixed-pin functions with all LPC81xM SO20 variants, including pin assignments for VDD/VSS, RESET, SWDIO/SWCLK, XTALIN/XTALOUT, and I2C open-drain pins. Peripheral enablement (e.g., USART count) differs by variant, but pin-level hardware compatibility is maintained.