NXP Semiconductors LPC812M101JDH20FP

Overview

LPC812M101JDH20FP 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/PWM (SCTimer), multi-rate timer (MRT), self wake-up timer (WKT), CRC engine, and one analog comparator - deployed in low-power embedded control for lighting, motor drive, and climate systems.

For engineers reviewing the LPC812M101JDH20FP datasheet, LPC812M101JDH20FP pinout, LPC812M101JDH20FP application, or LPC812M101JDH20FP equivalent, key selection criteria include its TSSOP20 package with true open-drain I²C pins (PIO0_10/PIO0_11), switch-matrix–configured peripheral routing, 20 mA high-current output capability on four pins, and Deep power-down wake-up via PIO0_4.

Technical Context

The LPC812M101JDH20FP implements an ARM Cortex-M0+ core with single-cycle I/O access, NVIC, and Micro Trace Buffer (MTB) for real-time debugging. Its clock system combines a 12 MHz ±1.5% internal RC oscillator, programmable PLL, crystal oscillator (1–25 MHz), and multiple low-power oscillators including a 10 kHz WKT source.

Peripheral routing is managed by a hardware switch matrix enabling dynamic assignment of USART0/1/2, SPI0/1, I²C, SCTimer inputs/outputs, and comparator functions to any non-power/non-ground GPIO (PIO0_0 to PIO0_17). Fixed-pin functions - including SWDIO/SWCLK, RESET, XTALIN/XTALOUT, and WAKEUP - are physically bound to specific TSSOP20 pins per Figure 5.

Key Specifications

Pinout & Package

TSSOP20 package (SOT360-1): 20-lead, 4.4 mm body width, 0.65 mm pitch, surface-mount. Pin 1 index marked; lead finish = matte tin.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LPC812M101JD20, the LPC812M101JDH20FP provides guaranteed I²C Fast-mode Plus compliance via dedicated open-drain pins, while LPC824M201JHI33 offers double the memory and peripherals at identical pinout - making it a direct upgrade path for feature-rich designs.

Availability

LPC812M101JDH20FP is available at Aetrix Electronics and suitable for lighting control, motor drive, and climate sensor applications requiring stable component supply, industrial temperature range (−40 °C to 105 °C), and long-term production continuity.

Supply support for LPC812M101JDH20FP 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 delivers cost-optimized, low-power ARM Cortex-M0+ MCUs targeting resource-constrained embedded control - emphasizing flexible peripheral routing, ultra-low power states, and integrated ROM-based drivers to accelerate time-to-market.

FAQ

What is the maximum operating frequency of the LPC812M101JDH20FP?

The LPC812M101JDH20FP 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 ±1.5%), external crystal (1–25 MHz), or PLL - all supported in the LPC812M101JDH20FP clock generation system without requiring external high-frequency components.

Does the LPC812M101JDH20FP support in-application programming (IAP)?

Yes, the LPC812M101JDH20FP supports Flash In-Application Programming (IAP) via its 8 kB on-chip ROM API. This allows firmware updates while the device is running, using validated routines that handle page erase/write operations safely - a capability confirmed in Section 8.4 of the official NXP LPC81xM datasheet for LPC812M101JDH20FP.

Which pins on the LPC812M101JDH20FP support true open-drain I²C operation?

The LPC812M101JDH20FP reserves PIO0_10 and PIO0_11 as true open-drain pins specifically for I²C-bus compliance. These pins support I²C standard mode, Fast-mode, and Fast-mode Plus when configured via the IOCON register - a requirement explicitly stated in Table 4 and Section 7.2 of the LPC812M101JDH20FP datasheet.

How does the LPC812M101JDH20FP achieve wake-up from Deep power-down mode?

The LPC812M101JDH20FP wakes from Deep power-down mode via a LOW pulse ≥50 ns on PIO0_4 (WAKEUP pin), or via timeout from its self wake-up timer (WKT). External pull-up is mandatory on PIO0_4 before entering Deep power-down - a design constraint verified in Table 4 footnote [6] and Section 7.2 of the LPC812M101JDH20FP documentation.

Is the LPC812M101JDH20FP pin-compatible with other LPC81xM variants in TSSOP20?

Yes, the LPC812M101JDH20FP shares identical pinout and electrical characteristics with other TSSOP20-packaged LPC81xM devices (e.g., LPC812M101JDH20), including matching GPIO assignments, SWD debug pins, and power/ground locations - as confirmed by Figures 5 and Table 4 in the LPC812M101JDH20FP datasheet.