NXP Semiconductors LPC822M101JDH20J

Overview

LPC822M101JDH20J from NXP Semiconductors is a 32-bit ARM Cortex-M0+ microcontroller operating at up to 30 MHz, featuring 16 KB flash, 4 KB SRAM, a 12-bit ADC with 5 input channels, one analog comparator, and 16 GPIO pins in a TSSOP20 package - deployed in sensor gateways, portable devices, and climate control systems.

For engineers reviewing the LPC822M101JDH20J datasheet, LPC822M101JDH20J pinout, LPC822M101JDH20J application, or LPC822M101JDH20J equivalent, key selection criteria include its 16-pin TSSOP footprint, 1.8–3.6 V supply range, -40 °C to +105 °C industrial temperature rating, and support for three USARTs, four I²C interfaces (one Fast-mode Plus), and two SPI controllers via flexible switch-matrix routing.

Technical Context

The LPC822M101JDH20J integrates an ARM Cortex-M0+ core (r0p1) with single-cycle I/O and NVIC, coupled to a switch matrix enabling dynamic assignment of USART/SPI/I²C/SCT functions to any non-power pin. Its peripheral set includes a 12-bit ADC (up to 1.2 Msamples/s), SCTimer/PWM with capture/match capability, and DMA with 18 channels.

Power management features include Deep-sleep and Deep power-down modes with wake-up on USART/SPI/I²C activity or external pin (PIO0_4), supported by integrated PMU, IRC oscillator (12 MHz ±1.5 %), and PLL for CPU clock scaling. The device uses a 20-pin TSSOP package with fixed-function pins for SWD, RESET, XTAL, ADC, comparator, and VREF, while movable peripherals are routed through the switch matrix.

Key Specifications

Pinout & Package

Package: TSSOP20 - plastic thin shrink small outline package, 20 leads, 4.4 mm body width, lead pitch 0.65 mm, RoHS-compliant surface-mount footprint.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LPC822M101JDH20J, LPC824M201JDH20 offers scalable memory and I/O within identical footprint and toolchain, while STM32F030F4P6 trades switch-matrix flexibility and SCTimer capability for lower unit cost and simpler software stack - making LPC822M101JDH20J optimal for mid-complexity, power-aware designs requiring routing agility.

Availability

LPC822M101JDH20J is available at Aetrix Electronics and suitable for sensor gateways, portable climate control systems, and fire & security panel nodes requiring stable component supply, long-term industrial lifecycle support, and RoHS-compliant packaging.

Supply support for LPC822M101JDH20J 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 deep expertise in ARM-based microcontrollers and mixed-signal integration.

The LPC82x product line was designed for cost-sensitive, low-power embedded control applications demanding high peripheral flexibility, robust industrial temperature operation, and simplified PCB design - exemplified by the LPC822M101JDH20J's switch matrix and Deep power-down architecture.

FAQ

What is the maximum operating frequency of the LPC822M101JDH20J?

The LPC822M101JDH20J operates at a maximum CPU frequency of 30 MHz using its ARM Cortex-M0+ core. This frequency is achievable with the internal 12 MHz RC oscillator (trimmed to ±1.5 %), external crystal (1–25 MHz), or PLL - all supported in the LPC822M101JDH20J's clock generation system without requiring external high-frequency components.

Does the LPC822M101JDH20J support in-application programming (IAP)?

Yes, the LPC822M101JDH20J supports Flash In-Application Programming (IAP) via on-chip ROM APIs. These pre-validated routines enable safe erasure and reprogramming of flash memory during runtime - essential for over-the-air updates and field firmware upgrades in deployed LPC822M101JDH20J systems.

How many ADC input channels does the LPC822M101JDH20J have?

The LPC822M101JDH20J has five ADC input channels (ADC_0 through ADC_4 and ADC_11), as confirmed in Table 2 of the datasheet. Although the LPC82x family supports up to 12 channels, the TSSOP20 variant - including LPC822M101JDH20J - implements only five due to pin count limitations.

Can the LPC822M101JDH20J wake from Deep power-down mode using an external pin?

Yes, the LPC822M101JDH20J can wake from Deep power-down mode using PIO0_4 (pin 11), which is designated as WAKEUP. A LOW-going pulse ≥50 ns on this pin forces exit from Deep power-down; the pin must be pulled HIGH externally before entering the mode to ensure reliable wake-up behavior in LPC822M101JDH20J deployments.

Is the LPC822M101JDH20J pin-compatible with other LPC82x TSSOP20 variants?

Yes, the LPC822M101JDH20J is pin-compatible with LPC824M201JDH20 in the TSSOP20 package. Both share identical pinout, power, reset, debug, and peripheral signal assignments - allowing hardware reuse across memory/I/O variants without PCB redesign, provided firmware accommodates differences in flash size, SRAM, and ADC channel count.