NXP Semiconductors LPC1547JBD64QL

Overview

LPC1547JBD64QL from NXP Semiconductors is a 32-bit ARM Cortex-M3 microcontroller designed for industrial motor control and digital power applications. It operates at up to 72 MHz, integrates 64 kB flash, 12 kB SRAM, 4 kB EEPROM, dual 12-bit ADCs (2 Msamples/s), one 12-bit DAC, four analog comparators, C_CAN, USB 2.0 full-speed device controller, and four State Configurable Timers (SCTimer/PWM) with input pre-processing.

For engineers reviewing the LPC1547JBD64QL datasheet, LPC1547JBD64QL pinout, LPC1547JBD64QL application, or LPC1547JBD64QL equivalent, key selection criteria include its LQFP64 package with 44 GPIOs, integrated SCT subsystem for event-driven PWM/motor timing, low-power operation down to Deep power-down mode, and support for USB/CAN/USART/I²C/ADC/DAC in a single-chip solution for motion and power conversion systems.

Technical Context

The LPC1547JBD64QL implements an ARM Cortex-M3 core (r2p1) with Harvard architecture, 3-stage pipeline, and integrated NVIC, MPU, and system tick timer. It supports Serial Wire Debug (SWD) with four breakpoints and two watchpoints, and includes a dedicated PMU for power management across Sleep, Deep-sleep, Power-down, and Deep power-down modes.

Its peripheral subsystem centers on the SCTimer/PWM with four independent timers, input pre-processor unit (SCTIPU), and direct integration with ADC thresholds, temperature sensor, and comparator outputs-enabling closed-loop motor control without CPU intervention. Clock generation uses a 12 MHz internal RC oscillator (±1 %), crystal oscillator (1–25 MHz), and three PLLs (system, USB, SCT).

Key Specifications

Pinout & Package

LPC1547JBD64QL is housed in a 64-pin LQFP package (10 × 10 × 1.4 mm, SOT314-2) with exposed pad for thermal performance. All pins support configurable pull-up/pull-down, open-drain mode, and digital glitch filtering.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LPC1549JBD64 and LPC1517JBD64, the LPC1547JBD64 uniquely balances USB-enabled field serviceability, 64 kB flash for optimized motor control code, and full analog/timing peripheral set - making it the most cost-effective choice for mid-tier digital power and motion control designs requiring USB-CDC or DFU capability.

Availability

LPC1547JBD64QL is available at Aetrix Electronics and suitable for motor control, solar inverters, and digital power supplies requiring stable component supply, long-term industrial lifecycle support, and consistent parametric performance across temperature and voltage ranges.

Supply support for LPC1547JBD64QL 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 headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT markets.

The LPC15xx product line is engineered for real-time industrial control applications, emphasizing integrated analog/motor peripherals, low-power operation, and robust debug and firmware update capabilities - specifically targeting digital power conversion and precision motion systems.

FAQ

What is the maximum operating frequency of the LPC1547JBD64QL?

The LPC1547JBD64QL features an ARM Cortex-M3 core rated for operation up to 72 MHz. This maximum frequency is achievable using the system PLL driven by either the internal 12 MHz RC oscillator (trimmed to ±1 % accuracy) or an external crystal (1–25 MHz). The core maintains full performance across its specified temperature range (−40 °C to +105 °C) and supply voltage (2.4 V–3.6 V), with no derating required under typical industrial conditions. The LPC1547JBD64QL achieves deterministic real-time response at this speed due to its Harvard architecture and prefetch unit.

Does the LPC1547JBD64QL include USB functionality?

Yes, the LPC1547JBD64QL integrates a full-speed USB 2.0 device controller with an on-chip PHY, supporting USB device enumeration and standard class implementations (e.g., CDC, HID, MSC) without external transceivers. Pins 47 (USB_DP) and 48 (USB_DM) are dedicated for differential USB signaling. The ROM bootloader supports USB-based firmware updates (DFU mode), and the USB peripheral can be used concurrently with other interfaces like C_CAN and USARTs. This capability is confirmed in Table 2 of the LPC15xx datasheet and distinguishes LPC1547JBD64QL from non-USB variants such as LPC1517JBD64.

How many analog-to-digital converters does the LPC1547JBD64QL have, and what are their specifications?

The LPC1547JBD64QL includes two independent 12-bit successive-approximation ADCs (ADC0 and ADC1), each supporting up to 12 input channels. Both ADCs achieve a maximum sample rate of 2 Msamples/s with configurable conversion clocks derived from the system clock or dedicated PLLs. Each ADC supports two independent conversion sequences and multiple trigger sources (timer, SCT, external pin). These specifications are explicitly listed in Table 2 and Section 2.11 of the LPC15xx datasheet, confirming full dual-ADC capability for synchronous current/voltage sensing in motor control applications.

What package type and pin count does the LPC1547JBD64QL use?

The LPC1547JBD64QL is supplied in an LQFP64 package (plastic low-profile quad flat package) with 64 leads, body dimensions of 10 mm × 10 mm × 1.4 mm, and standard SOT314-2 footprint. This package is verified in Table 1 and Figure 6 of the LPC15xx datasheet, which shows the pin configuration for "LPC1547JBD64" - the base part number without the 'QL' suffix, where 'QL' denotes tape-and-reel packaging per NXP's ordering convention. The LQFP64 variant provides 44 GPIOs and full peripheral access, including USB, C_CAN, and all analog resources.

Can the LPC1547JBD64QL operate in low-power modes, and how is wake-up handled?

Yes, the LPC1547JBD64QL supports four low-power modes: Sleep, Deep-sleep, Power-down, and Deep power-down. Wake-up from Deep power-down is possible via the RTC alarm (with 1 s or 1 ms resolution), the RTC high-resolution 1 kHz wake-up timer, or external activity on dedicated pins (e.g., PIO0_17). The PMU manages power states, and ROM APIs provide configuration for all modes. This behavior is documented in Sections 2.17 and 8.3 of the LPC15xx datasheet, and the Deep power-down current is specified at ≤1.5 µA with RTC active - critical for battery-backed industrial sensors.