NXP Semiconductors LPC812M101FDH20FP

Overview

LPC812M101FDH20FP 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 three USARTs, two SPI interfaces, one I2C-bus interface, a State Configurable Timer (SCT), and a comparator - deployed in lighting control systems requiring low-power, pin-flexible embedded processing.

For engineers reviewing the LPC812M101FDH20FP datasheet, LPC812M101FDH20FP pinout, LPC812M101FDH20FP application, or LPC812M101FDH20FP equivalent, key selection considerations include its TSSOP20 package with switch-matrix–configured peripheral routing, Deep power-down wake-up capability via PIO0_4, and ROM-based ISP/IAP support for field firmware updates.

Technical Context

The LPC812M101FDH20FP implements an ARM Cortex-M0+ core with single-cycle I/O access and integrated NVIC, enabling deterministic interrupt response for real-time control. Its switch matrix allows dynamic assignment of USART, SPI, I2C, and SCT functions to any non-power/non-ground GPIO pin - including open-drain I2C routing to dedicated PIO0_10/PIO0_11 pins.

Power management includes four low-power modes (Sleep, Deep-sleep, Power-down, Deep power-down), with wake-up supported from Deep power-down via PIO0_4 or self-wake-up timer (WKT) clocked from IRC or 10 kHz oscillator. The on-chip ROM provides validated drivers for USART, I2C, and power profiles, eliminating boot code duplication.

Key Specifications

Pinout & Package

TSSOP20 package (SOT360-1): 20-pin plastic thin shrink small outline, 4.4 mm body width, 0.65 mm pitch, lead-free and RoHS compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LPC812M101FD20 and LPC824M201JDH20, the LPC812M101FDH20FP offers optimal balance of pin count, TSSOP20 thermal performance, and proven low-power operation - making it ideal for space-constrained industrial and consumer edge nodes where upgrade path to USB or larger memory is not yet needed.

Availability

LPC812M101FDH20FP is available at Aetrix Electronics and suitable for lighting control, consumer appliance UI, and fire/security sensor node designs requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for LPC812M101FDH20FP 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 applications, with headquarters in Eindhoven, Netherlands.

The LPC800 series - including the LPC812M101FDH20FP - was designed for cost-sensitive, ultra-low-power embedded control in resource-constrained environments, emphasizing flexible I/O routing, integrated power management, and ROM-based firmware acceleration.

FAQ

What is the maximum operating frequency of the LPC812M101FDH20FP?

The LPC812M101FDH20FP operates at a maximum CPU frequency of 30 MHz using its ARM Cortex-M0+ core. This speed is achievable with the internal 12 MHz RC oscillator (trimmed to ±1 %), external crystal (1–25 MHz), or PLL - all supported by the on-chip clock generation system. The 30 MHz rating is validated across industrial temperature range and 3.3 V supply.

Does the LPC812M101FDH20FP support in-system programming (ISP)?

Yes, the LPC812M101FDH20FP supports In-System Programming via its built-in ROM bootloader. The 8 kB on-chip ROM includes validated ISP and IAP (In-Application Programming) APIs, allowing firmware updates over USART0 without external programmer. ISP entry is triggered by pulling PIO0_1 LOW during reset, and the process requires no additional flash-resident code.

How many USART interfaces does the LPC812M101FDH20FP have, and are they all available in the TSSOP20 package?

The LPC812M101FDH20FP includes three USART interfaces (USART0, USART1, USART2), and all three are fully functional in the TSSOP20 package. Unlike earlier variants, LPC812M101FDH20FP explicitly supports USART2 - confirmed in Table 2 of the datasheet - with routing flexibility provided by the switch matrix to any available GPIO pin.

Can the LPC812M101FDH20FP wake up from Deep power-down mode, and which pin is used?

Yes, the LPC812M101FDH20FP can wake up from Deep power-down mode using PIO0_4 as the dedicated WAKEUP pin. A LOW-going pulse of at least 50 ns on this pin initiates wake-up and exit from Deep power-down. To enter Deep power-down, PIO0_4 must be held HIGH externally; assigning other movable functions to this pin disables wake-up capability.

Is the LPC812M101FDH20FP pin-compatible with other LPC81xM variants in TSSOP20 packages?

Yes, the LPC812M101FDH20FP is pin-compatible with other TSSOP20 variants in the LPC81xM family, including LPC812M101FDH20 (non-FP suffix). The FP suffix denotes a specific quality grade (Industrial, Pb-free, halogen-free), but electrical and mechanical pinout remains identical across all TSSOP20 versions - ensuring direct PCB footprint reuse for different memory or feature configurations.