NXP Semiconductors LPC845M301JHI33Y

Overview

LPC845M301JHI33Y 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 compact sensor gateways and portable industrial controls.

For engineers reviewing the LPC845M301JHI33Y datasheet, LPC845M301JHI33Y pinout, LPC845M301JHI33Y application, or LPC845M301JHI33Y equivalent, this page delivers verified package mapping (HVQFN33), confirmed peripheral count (5 USARTs, 4 I2C, 2 SPI), validated GPIO count (29 pins), and real-world timing/performance constraints for rapid embedded system integration.

Technical Context

The LPC845M301JHI33Y 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) with four breakpoints. Its clock system integrates a ±1% trimmed Free Running Oscillator (FRO) at 18/24/30 MHz, programmable PLL, and low-power wake-up timer clocked from FRO or external source.

Peripheral routing uses a flexible switch matrix enabling function assignment to any non-power pin; fixed functions include SWDIO/SWCLK on PIO0_2/PIO0_3, RESET on PIO0_5, and WAKEUP on PIO0_4. The device supports hardware-triggered DMA (25 channels) and pattern-matching GPIO interrupts across eight inputs.

Key Specifications

Pinout & Package

HVQFN33 package: 5 mm × 5 mm body, 0.85 mm height, 33-terminal thermal-enhanced no-lead construction with exposed thermal pad (pin 33 = VSS).

Key Features

Applications

Equivalent & Alternatives

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

Compared with LPC845M301JHI33Y, the LPC845M301JBD48 provides greater I/O scalability in a larger package, while the LPC824M201JHI33 reduces cost and footprint at the expense of analog capability and interface count - making LPC845M301JHI33Y optimal for space-constrained, mixed-signal edge nodes requiring touch and dual DAC.

Availability

LPC845M301JHI33Y is available at Aetrix Electronics and suitable for sensor gateways, portable medical devices, and fire & security modules requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant manufacturing.

Supply support for LPC845M301JHI33Y 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 LPC84x product line targets cost-sensitive, low-power embedded systems needing rich analog/mixed-signal integration and flexible I/O routing - designed specifically for sensor hubs, HMI controllers, and smart peripherals.

FAQ

What is the maximum operating frequency and core architecture of the LPC845M301JHI33Y?

The LPC845M301JHI33Y 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, delivering deterministic real-time performance ideal for time-critical control tasks. The core operates within a 1.8 V to 3.6 V supply range and supports temperatures from -40°C to +105°C.

How many GPIO pins does the LPC845M301JHI33Y provide in its HVQFN33 package?

The LPC845M301JHI33Y provides 29 general-purpose I/O pins in the HVQFN33 package. These include configurable pull-up/pull-down resistors, programmable open-drain mode, input inverters, and digital filters. Eight of these GPIOs support boolean pattern-matching for hardware-accelerated interrupt generation.

Does the LPC845M301JHI33Y support capacitive touch sensing, and how many electrodes can it handle?

Yes, the LPC845M301JHI33Y includes a dedicated Capacitive Touch Interface supporting up to nine electrodes: CAPT_X0 through CAPT_X8 and CAPT_YL/CAPT_YH. This enables implementation of touch buttons, sliders, or proximity sensing without external components or significant firmware overhead - confirmed in the LPC84x datasheet Rev. 2.1.

What analog peripherals are integrated into the LPC845M301JHI33Y?

The LPC845M301JHI33Y integrates a 12-bit ADC with up to 12 input channels and 1.2 Msps sample rate, two independent 10-bit DACs (DACOUT_0 and DACOUT_1), and a five-input analog comparator with selectable internal/external reference. These peripherals operate from the dedicated VDDA/VSSA supply domain to ensure signal integrity.

Can the LPC845M301JHI33Y wake from deep power-down mode using an external pin?

Yes, the LPC845M301JHI33Y can wake from deep power-down mode via the PIO0_4 pin configured as WAKEUP. A LOW-going pulse as short as 50 ns on this pin exits deep power-down and resumes execution. The pin must be externally pulled HIGH before entering deep power-down mode to ensure reliable wake behavior.