NXP Semiconductors LPC812M101JTB16X

Overview

LPC812M101JTB16X 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 14 GPIO pins in a 16-terminal XSON package. It integrates a state-configurable timer/PWM (SCTimer), three USARTs, two SPI interfaces, one I²C-bus interface, and an analog comparator - enabling compact, low-power embedded control in space-constrained applications such as lighting modules and sensor nodes.

For engineers reviewing the LPC812M101JTB16X datasheet, LPC812M101JTB16X pinout, LPC812M101JTB16X application, or LPC812M101JTB16X equivalent, this device offers verified support for ISP/IAP programming, SWD debug, flexible peripheral routing via switch matrix, and wake-up from deep power-down mode using PIO0_4 - critical for battery-powered industrial and consumer edge devices.

Technical Context

The LPC812M101JTB16X implements a two-stage-pipeline ARM Cortex-M0+ core with single-cycle I/O access and integrated NVIC supporting 32 vectored interrupts. Its switch matrix enables dynamic assignment of USART, SPI, I²C, and SCTimer functions to any non-power GPIO pin - decoupling hardware layout from firmware-defined peripheral mapping.

Power management includes four low-power modes (Sleep, Deep-sleep, Power-down, Deep power-down), with wake-up capability from USART/SPI/I²C activity or dedicated WAKEUP pin (PIO0_4). Clocking combines a 12 MHz ±1.5% IRC, external crystal (1–25 MHz), PLL, and multiple low-power oscillators - all configurable via SYSCON registers without external components.

Key Specifications

Pinout & Package

XSON16 package: 2.5 mm × 3.2 mm × 0.5 mm body, 16-terminal no-lead surface-mount, rated for −40 °C to 105 °C operation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LPC812M101JDH16, the LPC812M101JTB16X saves 40% board area and improves thermal resistance in sealed enclosures; versus LPC824M201JHI33, it offers lower cost and simpler qualification for established designs with unchanged memory/peripheral needs.

Availability

LPC812M101JTB16X is available at Aetrix Electronics and suitable for lighting control, smart sensor nodes, industrial motor starters, and consumer appliance UIs requiring stable component supply and long-term industrial-grade availability.

Supply support for LPC812M101JTB16X 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.

The LPC81xM product line targets cost-sensitive, space-constrained embedded control applications - delivering ARM Cortex-M0+ performance with integrated analog, programmable timers, and flexible I/O routing in minimal packages.

FAQ

What is the maximum operating frequency of the LPC812M101JTB16X?

The LPC812M101JTB16X 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 without external components. The core's two-stage pipeline and single-cycle I/O ensure deterministic timing for real-time tasks.

Does the LPC812M101JTB16X support in-system programming (ISP)?

Yes, the LPC812M101JTB16X supports ISP via its built-in ROM bootloader. Programming is performed through USART0 using the ISP entry pin (PIO0_12 for chip revision 4C+ or PIO0_1 for earlier revisions) during reset. The 8 kB ROM includes validated ISP and IAP APIs, eliminating the need for external programming hardware in production or field updates.

How many GPIO pins does the LPC812M101JTB16X have, and what special I/O features are supported?

The LPC812M101JTB16X provides 14 general-purpose I/O pins in its XSON16 package. Each supports configurable pull-up/down resistors, programmable open-drain mode, input inverter, and glitch filtering. Four pins deliver 20 mA source current; two (PIO0_10/PIO0_11) are true open-drain with 20 mA sink capability - enabling direct LED driving and I²C Fast-mode Plus compliance.

Can the LPC812M101JTB16X wake up from Deep power-down mode, and how is this triggered?

Yes, the LPC812M101JTB16X can wake up from Deep power-down mode using the PIO0_4 pin. A LOW-going pulse as short as 50 ns on this pin forces exit from Deep power-down and resumes execution. External pull-up is required before entering Deep power-down mode. Alternatively, the self wake-up timer (WKT) clocked by the 10 kHz low-power oscillator can provide timed wake-up without external signals.

What debug interface does the LPC812M101JTB16X use, and is JTAG supported?

The LPC812M101JTB16X uses Serial Wire Debug (SWD) as its primary debug interface, accessible via SWCLK (pin 5) and SWDIO (pin 6). JTAG boundary scan is supported in test mode only, where TDO/TDI/TCK/TMS functions appear on PIO0_0–PIO0_4. SWD is recommended for development due to its 2-pin efficiency and full debug capability including breakpoints and watchpoints.