NXP Semiconductors LPC1812JBD144E

Overview

LPC1812JBD144E from NXP Semiconductors is a 32-bit ARM Cortex-M3 microcontroller operating at up to 180 MHz, featuring 512 kB flash (bank A only), 104 kB SRAM, no Ethernet or LCD controller, and a motor control PWM peripheral. It targets cost-optimized industrial control and white goods applications requiring deterministic real-time response and robust peripheral integration.

For engineers reviewing the LPC1812JBD144E datasheet, LPC1812JBD144E pinout, LPC1812JBD144E application, or LPC1812JBD144E equivalent, key selection criteria include its LQFP144 package, -40 °C to +105 °C temperature grade, absence of Ethernet/LCD/USB0 OTG, and presence of QEI, C_CAN, and dual 10-bit ADCs with 8 shared channels.

Technical Context

The LPC1812JBD144E implements an ARM Cortex-M3 r2p1 core with Harvard architecture, 3-stage pipeline, and integrated MPU/NVIC for deterministic real-time execution. Its memory subsystem includes 512 kB single-bank flash with accelerator, 104 kB SRAM distributed across multiple AHB-accessible blocks, and 16 kB EEPROM.

Peripheral connectivity centers on the State Configurable Timer/PWM (SCTimer/PWM) subsystem, Global Input Multiplexer Array (GIMA), and dual 10-bit ADCs sharing eight analog input channels. Clocking uses three PLLs - one for CPU, one for USB1, and one configurable as audio PLL - alongside 12 MHz internal RC oscillator trimmed to ±3 % accuracy.

Key Specifications

Pinout & Package

Package: LQFP144 (Plastic low profile quad flat package; 144 leads; body 20 × 20 × 1.4 mm, SOT486-1).

Key Features

Applications

Equivalent & Alternatives

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

Compared with LPC1833JBD144, the LPC1812JBD144E omits Ethernet and USB0 OTG but retains identical motor control PWM and QEI - making it optimal for standalone motion control. Versus LPC1822JBD144, it adds C_CAN 2.0B and QEI support, enabling interoperability with industrial fieldbus networks and precise position tracking.

Availability

LPC1812JBD144E is available at Aetrix Electronics and suitable for industrial motor control, smart energy metering, and white goods applications requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for LPC1812JBD144E 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 company specializing in secure connectivity solutions for automotive, industrial, and IoT markets, with leadership in ARM-based microcontrollers and edge processing.

The LPC18xx product line delivers high-performance, feature-rich Cortex-M3 MCUs targeting industrial automation, motor control, and smart infrastructure - emphasizing real-time determinism, peripheral flexibility, and long-term supply assurance.

FAQ

What is the maximum operating frequency of the LPC1812JBD144E?

The LPC1812JBD144E operates at a maximum CPU frequency of 180 MHz, achieved via its ARM Cortex-M3 core with integrated prefetch unit and speculative branching support. This frequency is sustained across the full -40 °C to +105 °C industrial temperature range, as validated in NXP's characterization testing and documented in the LPC185X_3X_2X_1X datasheet Rev. 5.3.

Does the LPC1812JBD144E include Ethernet or LCD controller peripherals?

No, the LPC1812JBD144E does not include Ethernet MAC or LCD controller peripherals. This is confirmed in Table 2 of the official datasheet, which explicitly lists "no" for both Ethernet and LCD columns for this part number. The device retains USB1 (Host/Device), C_CAN, motor control PWM, and QEI - making it optimized for motor and sensor-centric applications without display or network stack overhead.

How much flash memory is available on the LPC1812JBD144E, and is it dual-banked?

The LPC1812JBD144E contains 512 kB of on-chip flash memory allocated entirely to Bank A, with Bank B disabled (0 kB). This configuration is specified in Table 2 of the datasheet and enables single-bank firmware updates with simplified erase/write sequencing, though it precludes concurrent read-while-write operation used in some dual-bank OTA schemes.

What analog-to-digital converter (ADC) resources does the LPC1812JBD144E provide?

The LPC1812JBD144E integrates two independent 10-bit ADCs (ADC0 and ADC1), sharing eight analog input channels (ADC0_0–ADC0_7 mapped identically to ADC1_0–ADC1_7). Each ADC achieves up to 400 kSamples/s with DMA support, allowing synchronized sampling for current/voltage monitoring in motor control applications without CPU load.

Which package and pin count does the LPC1812JBD144E use?

The LPC1812JBD144E uses an LQFP144 package (Plastic low profile quad flat package; 144 leads; body 20 × 20 × 1.4 mm, SOT486-1). This is confirmed in Table 1 of the datasheet and matches the "JBD144" suffix, where "J" denotes -40 °C to +105 °C grade, "B" indicates LQFP, and "144" specifies lead count.