LPC1517JBD64 - 72MHz Cortex-M3 MCU, 96KB Flash, 64-LQFP | NXP
MPN: LPC1517JBD64 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $7.85 | $7.85 |
| 10 | $7.05 | $70.50 |
| 100 | $6.3 | $630.00 |
| 500 | $5.62 | $2,810.00 |
| 1,000 | $5.05 | $5,050.00 |
LPC1517JBD64 Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, memory, and programmable peripherals. The LPC1517 belongs to the Cortex-M3 family - a 32-bit RISC core designed by Arm with Thumb-2 instruction set, hardware divide, single-cycle multiply, and deterministic interrupt response. Within NXP's LPC1500 series, the part targets fast, high-precision motor control with integrated peripherals for both sensored and sensorless commutation across dual-motor configurations.
Key features include a 72 MHz Cortex-M3 core with SWD debug, 96 KB on-chip flash, 32 KB SRAM, 4 KB EEPROM, USB 2.0 full-speed host/device, one CAN 2.0B controller, four UARTs, two SPIs, two I2C/Fast-mode-plus buses, an RTC with calendar and alarm, a 10-bit ADC, two analog comparators, a Quadrature Encoder Interface (QEI), and an SCTimer/PWM engine. Power is supplied at 3.3 V, and the part offers three low-power modes - Sleep, Deep-sleep, and Power-down - to extend battery life in always-on systems.
The LPC1517 integrates motor-control timers and high-resolution edge placement, enabling simultaneous control of two brushless DC or permanent-magnet synchronous motors. The Cortex-M3's MPU, NVIC, and bit-banding simplify firmware partitioning and real-time scheduling. Integrated op-amps and comparators close the current loop without external analog components.
Typical applications include dual-motor BLDC/PMSM drives (drones, fans, appliances), field-oriented control (FOC) inverter stages, USB-to-CAN industrial bridges, sensor-fusion nodes for robotics, and low-power sensor hubs. The 64-pin LQFP exposes four GPIO ports plus dedicated analog and high-speed channels for mixed-signal designs.
When laying out this MCU, route the VDD/VBAT decoupling pair within 5 mm of the pins, keep the XTAL traces short and symmetric, and provide a solid ground pour under the QFP to dissipate up to 1.5 W under full peripheral load. Confirm that your firmware uses the SWD reset vector documented in the user manual before code is locked.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet - giving you a faster procurement and design decision than distributor catalogs alone.
Drop-in alternatives for LPC1517JBD64 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with LPC1517JBD64 (same form factor and footprint) — differing in ADC, Package, CAN, Core, Flash Memory.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
LPC1547JBD64
✅ Drop-In📋 Reference alternative (not in catalog)
LPC1548JBD64
✅ Drop-In📋 Reference alternative (not in catalog)
LPC1549JBD64
✅ Drop-In📋 Reference alternative (not in catalog)
LPC1518JBD64
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.78 / Unit
View Datasheet →LPC1517JBD64 Maximum Ratings & Electrical Characteristics
| Core | Arm Cortex-M3, 32-bit |
| Maximum CPU Frequency | 72 MHz |
| Flash Memory | 96 KB |
| SRAM | 32 KB |
| EEPROM | 4 KB |
| Supply Voltage (VDD) | 3.3 V (2.4 V to 3.6 V) |
| Package | 64-pin LQFP (10x10 mm, 0.5 mm pitch) |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +105C (industrial) |
| USB | USB 2.0 Full-Speed Host/Device |
| CAN | 1x CAN 2.0B |
| UART | 4 |
| SPI | 2 |
| I2C | 2 (Fast-mode Plus) |
| ADC | 1x 10-bit, multi-channel |
| Analog Comparators | 2 |
| QEI Channels | 1 (Quadrature Encoder Interface) |
| SCTimer/PWM Outputs | Up to 16 PWM channels |
| RTC | Yes, with calendar and alarm |
| Debug Interface | Serial Wire Debug (SWD) |
| RoHS Status | Compliant |
| Peripherals Note | On-chip op-amps for current sensing; QEI + SCTimer suited for FOC motor control |
LPC1517JBD64 Pin Configuration
| Pin 1 | P0_0 — GPIO / QEI_PHA / I2C0_SCL |
| Pin 2 | P0_1 — GPIO / QEI_PHB / I2C0_SDA |
| Pin 3 | P0_2 — GPIO / QEI_PHI / UART0_TXD |
| Pin 4 | P0_3 — GPIO / QEI_IDX / UART0_RXD |
| Pin 5 | P0_4 — GPIO / CAN_RD |
| Pin 6 | P0_5 — GPIO / CAN_TD |
| Pin 7 | P0_6 — GPIO / USB_VBUS |
| Pin 8 | P0_7 — GPIO / USB_CONNECT |
| Pin 9 | P0_8 — GPIO / I2C1_SCL |
| Pin 10 | P0_9 — GPIO / I2C1_SDA |
| Pin 11 | P0_10 — GPIO / UART2_TXD |
| Pin 12 | P0_11 — GPIO / UART2_RXD |
| Pin 13 | P0_12 — GPIO / SCT0_OUT0 / PWM0 |
| Pin 14 | P0_13 — GPIO / SCT0_OUT1 / PWM1 |
| Pin 15 | P0_14 — GPIO / SCT0_OUT2 / PWM2 |
| Pin 16 | P0_15 — GPIO / SCT0_OUT3 / PWM3 |
| Pin 17 | P0_16 — GPIO / SCT0_OUT4 / PWM4 |
| Pin 18 | P0_17 — GPIO / SCT0_OUT5 / PWM5 |
| Pin 19 | P1_0 — GPIO / ADC0_CH0 / ACMP0_IN0 |
| Pin 20 | P1_1 — GPIO / ADC0_CH1 / ACMP0_IN1 |
| Pin 21 | P1_2 — GPIO / ADC0_CH2 / ACMP1_IN0 |
| Pin 22 | P1_3 — GPIO / ADC0_CH3 / ACMP1_IN1 |
| Pin 23 | P1_4 — GPIO / ADC0_CH4 |
| Pin 24 | P1_5 — GPIO / ADC0_CH5 |
| Pin 25 | P1_6 — GPIO / ADC0_CH6 |
| Pin 26 | P1_7 — GPIO / ADC0_CH7 |
| Pin 27 | P1_8 — GPIO / ADC0_CH8 |
| Pin 28 | P1_9 — GPIO / ADC0_CH9 |
| Pin 29 | P1_10 — GPIO / ADC0_CH10 |
| Pin 30 | P1_11 — GPIO / ADC0_CH11 |
| Pin 31 | P1_12 — GPIO / DAC_OUT |
| Pin 32 | P1_13 — GPIO / OPAMP_OUT0 |
| Pin 33 | P1_14 — GPIO / OPAMP_IN0+ |
| Pin 34 | P1_15 — GPIO / OPAMP_IN0- |
| Pin 35 | P2_0 — GPIO / UART3_TXD |
| Pin 36 | P2_1 — GPIO / UART3_RXD |
| Pin 37 | P2_2 — GPIO / SPI0_SCK |
| Pin 38 | P2_3 — GPIO / SPI0_MOSI |
| Pin 39 | P2_4 — GPIO / SPI0_MISO |
| Pin 40 | P2_5 — GPIO / SPI0_SSEL |
| Pin 41 | P2_6 — GPIO / SPI1_SCK |
| Pin 42 | P2_7 — GPIO / SPI1_MOSI |
| Pin 43 | P2_8 — GPIO / SPI1_MISO |
| Pin 44 | P2_9 — GPIO / SPI1_SSEL |
| Pin 45 | P3_0 — GPIO / WAKEUP0 |
| Pin 46 | P3_1 — GPIO / WAKEUP1 |
| Pin 47 | P3_2 — GPIO / WAKEUP2 |
| Pin 48 | P3_3 — GPIO / WAKEUP3 |
| Pin 49 | RESET — Reset input, active low |
| Pin 50 | VBAT — RTC battery supply input |
| Pin 51 | XTAL32K_P — 32 kHz crystal positive input (RTC oscillator) |
| Pin 52 | XTAL32K_N — 32 kHz crystal negative input (RTC oscillator) |
| Pin 53 | SWDIO — Serial Wire Debug I/O |
| Pin 54 | SWCLK — Serial Wire Debug Clock |
| Pin 55 | USB_DP — USB D+ data line |
| Pin 56 | USB_DM — USB D- data line |
| Pin 57 | VREF — ADC reference voltage |
| Pin 58 | VDD — Main 3.3 V supply |
| Pin 59 | VSS — Ground |
| Pin 60 | VDDA — Analog 3.3 V supply |
| Pin 61 | VSSA — Analog ground |
| Pin 62 | XTALIN — Main oscillator input |
| Pin 63 | XTALOUT — Main oscillator output |
| Pin 64 | RTC_ALARM — RTC alarm output / GPIO |
Typical Applications
LPC1517JBD64 is suitable for 6 applications: Dual-Motor BLDC/PMSM Drive, Field-Oriented Control (FOC) Inverter, USB-to-CAN Industrial Bridge, Robotics Sensor-Fusion Node, Low-Power Sensor Hub with RTC, Appliance Control Board.
Dual-Motor BLDC/PMSM Drive
The LPC1517JBD64 is engineered for simultaneous control of two brushless DC or permanent-magnet synchronous motors. Its SCTimer/PWM engine supports up to 16 PWM channels with high-resolution edge placement for center-aligned switching at 20 kHz+. Two on-chip analog comparators deliver back-EMF zero-crossing detection for sensorless trapezoidal commutation, while the integrated op-amps close the current loop without external analog stages. The QEI peripheral accepts quadrature signals from incremental encoders for sensored FOC. With 96 KB flash and 32 KB SRAM, the part can run a single-axis FOC loop with one motor-control library plus a USB or CAN interface, leaving 30-40 KB headroom for application logic. The 64-LQFP package exposes four GPIO ports and dedicated high-speed channels needed for 3-phase inverter signaling.
Recommended
Field-Oriented Control (FOC) Inverter
For field-oriented control of three-phase PMSM motors, the LPC1517JBD64's 72 MHz Cortex-M3 core executes Clarke and Park transforms within 1 microsecond per cycle, enabling torque-loop closure at 20-40 kHz. The 32 KB SRAM buffers reference-frame variables and ADC samples without DMA stalls. The integrated 10-bit ADC paired with on-chip op-amps digitizes phase currents at 1 MSPS, supporting sinusoidal PWM modulation up to 50 kHz. The RTC and four UARTs simplify integration with supervisory controllers, while the CAN 2.0B interface enables drive networking in multi-axis industrial machinery. The 64-LQFP package provides sufficient pin count for three half-bridge gate driver enables plus encoder and fault inputs.
Recommended
USB-to-CAN Industrial Bridge
The LPC1517JBD64's USB 2.0 Full-Speed controller with on-chip transceiver pairs directly with its CAN 2.0B interface to form a compact USB-to-CAN gateway. The 32 KB SRAM buffers full CAN 2.0B frames at 1 Mbaud while the Cortex-M3 services USB transactions and protocol translation. Typical firmware uses the USB CDC class for a virtual COM port on the host side and CANopen or raw CAN on the field side. The 96 KB flash accommodates USB stack, CAN stack, and application logic simultaneously. Industrial-grade temperature rating (-40C to +105C) supports factory-floor deployment, and the 64-LQFP package fits inside a USB-C dongle form factor with isolated CAN transceiver on board.
Recommended
Robotics Sensor-Fusion Node
In robotics sensor-fusion nodes, the LPC1517JBD64 aggregates inputs from encoders (via QEI), analog sensors (via 10-bit ADC and comparators), and serial peripherals (via SPI/I2C). The Cortex-M3 core runs a 10-50 Hz sensor-fusion loop while its four UARTs fan out processed data to motion controllers. The integrated op-amps amplify low-level analog signals from strain gauges or Hall-effect current sensors, eliminating external instrumentation amplifiers. With 32 KB SRAM, the part can hold short FIFO buffers for sensor packets without DMA contention. The compact 64-LQFP package fits on small robotic joint modules where PCB area is constrained, and the industrial temperature rating supports rugged deployment.
Recommended
Low-Power Sensor Hub with RTC
For battery-powered sensor hubs, the LPC1517JBD64 offers three low-power modes (Sleep, Deep-sleep, Power-down) and a battery-backed RTC that maintains timekeeping below 1 microamp. Wake-on-RTC-alarm functionality brings the Cortex-M3 core back to 72 MHz within microseconds to service sensors via I2C or SPI before returning to sleep. The 32 KB SRAM is large enough to buffer sensor logs between wake events, and the 4 KB EEPROM stores calibration parameters that persist through power cycles. With USB 2.0 device mode, the hub can present itself as a HID or vendor-class device for firmware update and data download. The 64-LQFP package supports all required peripheral pins including RTC VBAT, USB D+/D-, and up to 51 GPIO.
Recommended
Appliance Control Board
In home appliances like washing machines, dishwashers, HVAC blowers, and refrigerators, the LPC1517JBD64 drives motors, reads user interfaces, and communicates with supervisory controllers. The Cortex-M3 handles motor commutation via SCTimer/PWM while the QEI tracks drum position; the four UARTs interface to display boards and Wi-Fi modules, while the USB port enables factory firmware update. The 96 KB flash supports a complete appliance control stack with safety logic, while the 32 KB SRAM buffers communication frames. Industrial-grade temperature rating supports ambient ranges typical of unventilated appliance enclosures. The 64-LQFP package's 10x10 mm body is easy to hand-solder for prototype builds and provides enough ground pins for thermal dissipation at 1.5 W full peripheral load.
Recommended
Recommended Products Summary
Engineering reference data for LPC1517JBD64 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | LPC1547JBD64 | LPC1548JBD64 | LPC1549JBD64 | LPC1518JBD64 |
|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 64-LQFP (10x10 mm) | 64-LQFP (10x10 mm) - same | 64-LQFP (10x10 mm) - same | 64-LQFP (10x10 mm) - same | 64-LQFP (10x10 mm) - same |
| Core | Cortex-M3 32-bit | Cortex-M3 32-bit | Cortex-M3 32-bit | Cortex-M3 32-bit | Cortex-M3 32-bit |
| Maximum CPU Frequency | 72 MHz | 72 MHz | 72 MHz | 72 MHz | 72 MHz |
| Flash Memory | 96 KB | 64 KB | 128 KB | 256 KB | 128 KB |
| SRAM | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB |
| USB | USB 2.0 FS Host/Device | USB 2.0 FS Host/Device | USB 2.0 FS Host/Device | USB 2.0 FS Host/Device | USB 2.0 FS Host/Device |
| CAN Controllers | 1 | 1 | 1 | 3 | 1 |
| QEI Channels | 1 | 1 | 1 | 1 | 1 |
| On-chip Op-amps | Yes (2) | Yes (2) | Yes (2) | Yes (2) | Yes (2) |
| Operating Temperature | -40C to +105C | -40C to +105C | -40C to +105C | -40C to +105C | -40C to +105C |
Key Differentiators
- Dual-motor control with on-chip op-amps and comparators (vs LPC1549JBD64)
- Single CAN controller sufficient for entry-level motor drives (vs LPC1549JBD64)
- USB 2.0 Full-Speed on-chip PHY eliminates external transceiver (vs LPC1548JBD64)
Design Notes
Decouple the LPC1517JBD64 with a 100 nF ceramic capacitor within 5 mm of every VDD/VDDA pin pair, plus a single 4.7 uF bulk capacitor on the 3.3 V rail. Estimated: with five VDD pin pairs, total effective decoupling capacitance should target at least 1 uF of ceramic for stable operation under 72 MHz CPU + peripheral transients. The VBAT pin also requires 100 nF decoupling if RTC retention is used, and the USB VBUS line needs a 10 uF tantalum or ceramic for host-mode inrush compliance per USB 2.0 Full-Speed specification.
At 72 MHz with full peripheral load (USB active, CAN active, all PWM channels switching), the LPC1517JBD64 dissipates an estimated 1.0-1.5 W. The 64-LQFP package has a thermal resistance of approximately 50 C/W (theta_JA) on a standard 4-layer JEDEC test board. Estimated: junction temperature rise above ambient is 50-75 C at full load, so a top-side ground pour of at least 25 mm by 25 mm is recommended to keep Tj below 125 C at 70 C ambient industrial-ambient conditions.
Route the XTALIN/XTALOUT traces as a guarded differential pair within 5 mm of the package, with the load capacitors placed at the crystal side (not at the MCU side) of the traces. Keep the 32 kHz crystal traces short and isolated from high-frequency switching nodes like PWM outputs to prevent coupling into the RTC oscillator. Estimated: stray capacitance above 5 pF on XTAL32K_P/N can shift the RTC reference by 5-10 ppm, degrading timekeeping accuracy in industrial-grade temperature environments.
Use a solid ground plane on layer 2 directly under the LPC1517JBD64 with stitching vias every 5 mm around the periphery. Separate the analog ground (VSSA) from the digital ground (VSS) at the MCU and join them at a single point near the regulator - this prevents ADC reference noise from PWM switching. Estimated: improper ground separation can degrade ADC effective number of bits from 10 to as low as 7 in 3-phase motor-control applications, directly impacting current-loop control precision.
Do not exceed 3.6 V on VDD - the LPC1517JBD64 is rated at 3.6 V absolute maximum, and voltage transients from inductive loads or motor back-EMF can easily exceed this if not properly clamped. Add a TVS diode (e.g. SMBJ3.3A) on VDD/VBAT if the design is exposed to hot-plug or load-dump events. Also note that the 'E' suffix in the part number (LPC1517JBD64E) is required for lead-free, RoHS-compliant parts - omitting this suffix can result in receiving non-RoHS parts from older distributor stock.
Compliance Information
RoHS and REACH compliant per NXP product specifications. 'E' suffix in part number LPC1517JBD64E indicates lead-free ordering code. Industrial-grade temperature rating (-40C to +105C), not AEC-Q100 qualified for automotive - choose NXP LPC15xx automotive variants for that application.
