NXP Semiconductors LPC845M301JHI48K

Overview

LPC845M301JHI48K from NXP Semiconductors is a 32-bit Arm Cortex-M0+ microcontroller operating at up to 30 MHz, featuring 64 KB flash, 16 KB SRAM, a 12-bit ADC with 12-channel input, two 10-bit DACs, and capacitive touch interface - deployed in sensor gateways and portable human-interface devices requiring low-power mixed-signal control.

For engineers reviewing the LPC845M301JHI48K datasheet, LPC845M301JHI48K pinout, LPC845M301JHI48K application, or LPC845M301JHI48K equivalent, this page delivers verified package mapping (HVQFN48), confirmed peripheral count (5 USARTs, 4 I2C, 2 SPI), validated GPIO count (42 pins), and real-world timing/performance constraints for rapid schematic integration and firmware bring-up.

Technical Context

The LPC845M301JHI48K implements an Arm Cortex-M0+ core (r0p1) with single-cycle I/O and nested vectored interrupt controller (NVIC), paired with a multilayer AHB matrix for deterministic peripheral access. Its clock system integrates a factory-trimmed Free Running Oscillator (FRO) delivering ±1% accuracy across 0–70°C and supports PLL-based CPU scaling to 30 MHz without external crystal dependency.

Peripherals are routed via a programmable switch matrix enabling function assignment to any non-power pin - including SCTimer/PWM outputs, ADC triggers, and I2C/USART signals - while retaining independent GPIO bit-set/clear/toggle control and boolean pattern-matching interrupts on eight inputs for event-driven wake-up from deep power-down.

Key Specifications

Pinout & Package

HVQFN48 package: plastic thermal-enhanced very thin quad flat package, 48 terminals, body size 7 mm × 7 mm × 0.85 mm, exposed thermal pad, leadless construction - optimized for high-density PCB layouts and improved thermal dissipation in fanless designs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LPC845M301JHI48K, the LQFP48 variant trades thermal performance for assembly simplicity, while the LPC824M201JHI33 reduces feature set and memory to meet entry-level control needs - neither offers pin compatibility, but both share the same toolchain and peripheral register map for software portability.

Availability

LPC845M301JHI48K is available at Aetrix Electronics and suitable for sensor gateways, portable wearables, and industrial control panels requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance across temperature and voltage ranges.

Supply support for LPC845M301JHI48K 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 over 30 years of microcontroller innovation and ARM ecosystem leadership.

The LPC800 series targets cost-sensitive, low-power embedded control applications, emphasizing peripheral flexibility, energy efficiency, and rapid time-to-market through integrated analog/mixed-signal features and unified development tools.

FAQ

What is the maximum operating frequency of the LPC845M301JHI48K?

The LPC845M301JHI48K operates at a maximum CPU frequency of 30 MHz, achieved via its internal PLL or directly from the factory-trimmed Free Running Oscillator (FRO). This frequency is guaranteed across the full industrial temperature range (-40°C to +105°C) and 1.8–3.6 V supply, with the FRO maintaining ±1% accuracy without external crystal dependency - making it ideal for timing-critical sensor fusion and motor control loops.

Does the LPC845M301JHI48K support in-system programming (ISP)?

Yes, the LPC845M301JHI48K supports In-System Programming (ISP) through USART, SPI, and I2C interfaces using the on-chip ROM bootloader. The ISP entry is triggered by holding PIO0_12 LOW during reset, enabling field firmware updates without dedicated debug hardware - a key capability for remote device maintenance and OTA-like deployments in deployed LPC845M301JHI48K-based systems.

How many GPIO pins are available on the LPC845M301JHI48K in HVQFN48 package?

The LPC845M301JHI48K in HVQFN48 package provides 42 general-purpose I/O pins, as confirmed in Table 2 of the official datasheet. These include configurable pull-up/pull-down resistors, programmable open-drain mode, input inverters, and digital filters - with eight pins supporting boolean pattern-matching interrupts for advanced wake-up logic in the LPC845M301JHI48K design.

What analog peripherals are integrated into the LPC845M301JHI48K?

The LPC845M301JHI48K integrates a 12-bit ADC with up to 12 input channels and 1.2 Msps sample rate, two 10-bit DACs (DACOUT_0 and DACOUT_1), and a five-input analog comparator with selectable internal/external reference. These analog resources are accessible on dedicated pins like PIO0_17 (ADC_9/DACOUT_0) and PIO0_29 (DACOUT_1), enabling closed-loop control and sensor signal conditioning within the LPC845M301JHI48K itself.

Is the LPC845M301JHI48K pin-compatible with other LPC84x variants?

No, the LPC845M301JHI48K is not pin-compatible with LQFP64 or HVQFN33 variants due to differing pin counts and physical layouts - though it shares identical peripheral functionality and register mapping with LPC845M301JBD48 (LQFP48) and LPC845M301JHI33 (HVQFN33) within the same family. Pin assignments for shared functions (e.g., SWDIO, RESET, I2C0) are preserved across HVQFN48 and LQFP48 packages, but not across HVQFN33.