NXP Semiconductors LPC845M301JHI48Y

Overview

LPC845M301JHI48Y from NXP Semiconductors is a 32-bit Arm Cortex-M0+ microcontroller operating at up to 30 MHz, featuring 64 KB flash, 16 KB SRAM, one 12-bit ADC (12-channel, 1.2 Msps), two 10-bit DACs, and capacitive touch interface - deployed in sensor gateways and industrial control systems requiring low-power mixed-signal processing.

For engineers reviewing the LPC845M301JHI48Y datasheet, LPC845M301JHI48Y pinout, LPC845M301JHI48Y application, or LPC845M301JHI48Y equivalent, this page delivers verified package mapping (HVQFN48), confirmed peripheral routing via switch matrix, validated wake-up timer behavior with external clock input, and real-world timing/performance constraints for embedded firmware integration.

Technical Context

The LPC845M301JHI48Y implements an Arm Cortex-M0+ core (r0p1) with single-cycle I/O and NVIC, paired with a multilayer AHB matrix and Serial Wire Debug (SWD) interface supporting four breakpoints and two watchpoints. Its memory subsystem includes 64 KB flash with 64-byte page erase and Fast Initialization Memory (FAIM) for boot configuration.

Peripheral architecture centers on flexible function assignment via a hardware switch matrix: all USART, SPI, I2C, SCTimer/PWM, and ADC/DAC signals are routable to GPIO pins except fixed-function pins (e.g., RESET, XTALIN/XTALOUT, SWDIO/SWCLK). The self-wake-up timer (WKT) operates from FRO, low-power oscillator, or external clock on PIO0_28 - active in deep power-down mode.

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, lead-free and RoHS compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LPC845M301JHI48Y, the LQFP48 variant offers easier prototyping and thermal margin but increases PCB area, while the LPC824M201JHI33 reduces BOM cost and complexity at the expense of capacitive touch and second DAC - making LPC845M301JHI48Y optimal for compact, feature-rich mixed-signal edge nodes.

Availability

LPC845M301JHI48Y is available at Aetrix Electronics and suitable for sensor gateways, industrial control panels, and portable medical devices requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for LPC845M301JHI48Y 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 broad MCU, RF, and security IP portfolios.

The LPC800 series targets cost-sensitive, low-power embedded systems requiring Arm-based performance with rich analog/mixed-signal integration - designed specifically for smart sensors, HMI, and industrial edge nodes.

FAQ

What is the maximum operating frequency and core type of the LPC845M301JHI48Y?

The LPC845M301JHI48Y features an Arm Cortex-M0+ core (revision r0p1) with a maximum CPU frequency of 30 MHz. It includes a single-cycle multiplier and fast single-cycle I/O port. This frequency is achievable using the internal Free Running Oscillator (FRO) at 30 MHz or via PLL multiplication from lower-frequency sources like crystal or external clock - all validated across the full -40°C to +105°C temperature range.

Does the LPC845M301JHI48Y support in-system programming (ISP) and how is it initiated?

Yes, the LPC845M301JHI48Y supports In-System Programming (ISP) through USART, SPI, and I2C interfaces. ISP entry is triggered by holding PIO0_12 LOW during reset - this forces the boot ROM to activate the ISP command handler instead of executing user code from flash. The process requires no external debugger and enables field firmware updates using standard serial communication protocols.

How many GPIO pins are available on the LPC845M301JHI48Y in the HVQFN48 package?

The LPC845M301JHI48Y provides 42 general-purpose I/O pins in the HVQFN48 package. This count excludes dedicated power (VDD/VSS/VDDA/VSSA), reset, debug (SWDIO/SWCLK), and crystal (XTALIN/XTALOUT) pins. All 42 GPIOs support configurable pull-up/pull-down, programmable open-drain mode, input inverter, and digital filtering - and can be assigned to peripheral functions via the switch matrix.

What analog peripherals are integrated into the LPC845M301JHI48Y and what are their key specifications?

The LPC845M301JHI48Y 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. The ADC supports two independent conversion sequences with internal/external triggers; DAC outputs are buffered and usable concurrently with ADC operations; the comparator includes selectable internal reference voltage and supports windowed comparison modes.

Can the LPC845M301JHI48Y wake from deep power-down mode, and if so, through which mechanisms?

Yes, the LPC845M301JHI48Y can wake from deep power-down mode via three hardware sources: the WAKEUP pin (PIO0_4, active-low pulse ≥50 ns), the RESET pin (PIO0_5, active-low pulse ≥20 ns), or the Self-Wake-up Timer (WKT) clocked by FRO, low-power oscillator, or external clock on PIO0_28. All three mechanisms remain active in deep power-down, enabling sub-µA system-level power management for battery-operated applications.