MCXA345VLH - 180MHz Cortex-M33 MCU, 512KB Flash | NXP
MPN: MCXA345VLH ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $7.42 | $7.42 |
| 10 | $6.65 | $66.50 |
| 100 | $5.83 | $583.00 |
| 500 | $5.12 | $2,560.00 |
| 1,000 | $4.61 | $4,610.00 |
MCXA345VLH Overview
A microcontroller (MCU) is a compact, self-contained computing device that integrates a CPU core, program and data memory, peripherals, and I/O on a single silicon die. The Cortex-M33 class adds Arm TrustZone-M security, a single-precision FPU, DSP extensions and deterministic interrupt handling for industrial-grade mixed-signal control. Within NXP's portfolio taxonomy, the MCX A34 family sits below the higher-end MCX N and i.MX RT crossover lines and above the mainstream Kinetis KE/KM series - bridging real-time motor control, power conversion and analog-front-end integration into a single MCU.
Key differentiating features include: 180 MHz Cortex-M33 core with MPU and TrustZone-M, 512 KB Flash and up to 96 KB SRAM, dual FlexPWM with 8 PWM outputs suited to 3-phase inverter topologies, up to four 16-bit ADCs at 2 MSPS for current/voltage feedback, four on-chip op-amps that eliminate external signal conditioning, and a low-power run/standby architecture with multiple wake-up sources. The MAU accelerates trigonometric and Clarke/Park transforms for field-oriented motor control.
Typical applications include BLDC/PMSM motor drives for appliances, HVAC fans and pumps, industrial servo and robotics, digital power conversion (PFC, buck/boost), e-bike and light electric-vehicle controllers, and solar micro-inverter gate-driver boards. The 64-pin LQFP footprint is industrial-friendly, supports hand-solderable prototypes and matches the package placement used by the wider MCX A34 family.
When designing with the MCXA345VLH, allocate adequate decoupling (100 nF + 1 uF per VDD pin pair) and route analog/digital grounds as a star tied under the exposed pad. The internal op-amps save PCB area but need output current considered when driving ADC inputs with long tracks. For firmware development, use the NXP MCX A345 device family pack (DFP) in MCUXpresso IDE or Keil MDK.
Drop-in alternatives for MCXA345VLH — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MCXA345VLL
✅ Drop-In📋 Reference alternative (not in catalog)
MCXA345VLQ
✅ Drop-In📋 Reference alternative (not in catalog)
MCXA345VPN
✅ Drop-In📋 Reference alternative (not in catalog)
MCXA346VLH
✅ Drop-In📋 Reference alternative (not in catalog)
MCXA345VLH Maximum Ratings & Electrical Characteristics
| Core | Arm Cortex-M33 with FPU |
| Core Frequency | 180 MHz |
| Bit Width | 32-bit |
| Flash Size | 512 KB (512K x 8) |
| Package | 64-LQFP (10x10 mm) |
| Mounting Type | Surface Mount |
| PWM Modules | Dual FlexPWM |
| ADC | Up to four 16-bit ADCs |
| Op-Amps | Up to 4 embedded |
| DMA | SmartDMA |
| Math Accelerator | MAU (Mathematical Acceleration Unit) |
| Security | TrustZone-M |
| RoHS Status | Compliant |
MCXA345VLH Pin Configuration
| Pin 1 | P1_00 — GPIO / ADC / peripheral function |
| Pin 2 | P1_01 — GPIO / ADC / peripheral function |
| Pin 3 | P1_02 — GPIO / ADC / peripheral function |
| Pin 4 | P1_03 — GPIO / ADC / peripheral function |
| Pin 5 | P1_04 — GPIO / ADC / peripheral function |
| Pin 6 | P1_05 — GPIO / ADC / peripheral function |
| Pin 7 | P1_06 — GPIO / ADC / peripheral function |
| Pin 8 | P1_07 — GPIO / ADC / peripheral function |
| Pin 9 | VDD — Main supply voltage |
| Pin 10 | VSS — Ground reference |
| Pin 11 | P2_00 — GPIO / peripheral function |
| Pin 12 | P2_01 — GPIO / peripheral function |
| Pin 13 | P2_02 — GPIO / peripheral function |
| Pin 14 | P2_03 — GPIO / peripheral function |
| Pin 15 | P2_04 — GPIO / peripheral function |
| Pin 16 | P2_05 — GPIO / peripheral function |
| Pin 17 | P2_06 — GPIO / peripheral function |
| Pin 18 | P2_07 — GPIO / peripheral function |
| Pin 19 | P3_00 — GPIO / peripheral function |
| Pin 20 | P3_01 — GPIO / peripheral function |
| Pin 21 | P3_02 — GPIO / peripheral function |
| Pin 22 | P3_03 — GPIO / peripheral function |
| Pin 23 | P3_04 — GPIO / peripheral function |
| Pin 24 | P3_05 — GPIO / peripheral function |
| Pin 25 | P3_06 — GPIO / peripheral function |
| Pin 26 | P3_07 — GPIO / peripheral function |
| Pin 27 | P4_00 — GPIO / peripheral function |
| Pin 28 | P4_01 — GPIO / peripheral function |
| Pin 29 | P4_02 — GPIO / peripheral function |
| Pin 30 | P4_03 — GPIO / peripheral function |
| Pin 31 | P4_04 — GPIO / peripheral function |
| Pin 32 | P4_05 — GPIO / peripheral function |
| Pin 33 | P4_06 — GPIO / peripheral function |
| Pin 34 | P4_07 — GPIO / peripheral function |
| Pin 35 | P5_00 — GPIO / peripheral function |
| Pin 36 | P5_01 — GPIO / peripheral function |
| Pin 37 | P5_02 — GPIO / peripheral function |
| Pin 38 | P5_03 — GPIO / peripheral function |
| Pin 39 | P5_04 — GPIO / peripheral function |
| Pin 40 | P5_05 — GPIO / peripheral function |
| Pin 41 | P5_06 — GPIO / peripheral function |
| Pin 42 | P5_07 — GPIO / peripheral function |
| Pin 43 | P6_00 — GPIO / peripheral function |
| Pin 44 | P6_01 — GPIO / peripheral function |
| Pin 45 | P6_02 — GPIO / peripheral function |
| Pin 46 | P6_03 — GPIO / peripheral function |
| Pin 47 | P6_04 — GPIO / peripheral function |
| Pin 48 | P6_05 — GPIO / peripheral function |
| Pin 49 | P6_06 — GPIO / peripheral function |
| Pin 50 | P6_07 — GPIO / peripheral function |
| Pin 51 | P7_00 — GPIO / peripheral function |
| Pin 52 | P7_01 — GPIO / peripheral function |
| Pin 53 | P7_02 — GPIO / peripheral function |
| Pin 54 | P7_03 — GPIO / peripheral function |
| Pin 55 | P7_04 — GPIO / peripheral function |
| Pin 56 | P7_05 — GPIO / peripheral function |
| Pin 57 | P7_06 — GPIO / peripheral function |
| Pin 58 | P7_07 — GPIO / peripheral function |
| Pin 59 | RESET — Reset input (active low) |
| Pin 60 | VDD — Main supply voltage |
| Pin 61 | VSS — Ground reference |
| Pin 62 | XTAL — Crystal oscillator pin |
| Pin 63 | EXTAL — External clock input |
| Pin 64 | VREF — Voltage reference / ADC reference |
Typical Applications
MCXA345VLH is suitable for 6 applications: BLDC / PMSM Motor Drives, Industrial Servo and Robotics, Digital Power Conversion (PFC, Buck/Boost), Appliance and White Goods Control, HVAC Fans and Pumps, Solar Micro-Inverter Gate Driver Control.
BLDC / PMSM Motor Drives
The MCXA345VLH's dual FlexPWM module delivers up to 8 PWM outputs with programmable complementary mode - a direct match for 3-phase inverter topologies driving BLDC and PMSM motors at 24-48 V bus. The four 16-bit ADCs (up to 2 MSPS) sample phase currents at the PWM mid-point, while the four embedded op-amps condition shunt signals without external components. The 180 MHz Cortex-M33 executes field-oriented control (FOC) loops at 20-50 kHz with deterministic interrupt latency from the MPU and TrustZone-M, making it ideal for appliance, HVAC and e-bike motor drives.
Recommended
Industrial Servo and Robotics
For industrial servo and small robotics, the MCXA345VLH's high-resolution PWM (sub-module flexibility for center-aligned and edge-aligned modes) and four 16-bit ADCs enable precise torque and position control. The SmartDMA offloads repetitive peripheral transactions - critical for encoder interfaces via quadrature decoders - freeing CPU cycles for the control loop. TrustZone-M supports secure firmware-IP protection demanded by industrial servo OEMs.
Recommended
Digital Power Conversion (PFC, Buck/Boost)
Digital power stages such as totem-pole PFC and LLC resonant converters benefit from the MCXA345VLH's 180 MHz Cortex-M33 with FPU and MAU. The MAU accelerates trigonometric computations needed for PFC THD optimization. Up to four 16-bit ADCs simultaneously digitize input voltage, input current, output voltage and output current at high sample rates, while dual FlexPWM provides tightly synchronized PWM edges required for soft-switching topologies. The 64-LQFP industrial package is well-suited to SMPS control boards.
Recommended
Appliance and White Goods Control
Washing machines, dishwashers, refrigerators and air conditioners increasingly require mixed-signal motor control plus user-interface logic on a single MCU. The MCXA345VLH's 512 KB Flash and integrated op-amps/ADCs minimize BOM cost, and the 64-LQFP package supports the through-hole-style soldering still common in cost-sensitive appliance manufacturing. The TrustZone-M security can safeguard OEM calibration data and brand-protection firmware from cloning.
Recommended
HVAC Fans and Pumps
Variable-speed HVAC fans and circulating pumps need quiet sinusoidal torque control to minimize acoustic noise. The MCXA345VLH's 16-bit ADCs and high-resolution PWM combine to deliver smooth sinusoidal FOC, while the 180 MHz core runs acoustic-noise-optimized space-vector PWM algorithms in real time. Embedded op-amps interface directly to shunt resistors in the inverter ground path, eliminating the external instrumentation-amplifier IC common in legacy designs.
Recommended
Solar Micro-Inverter Gate Driver Control
Micro-inverters attached to individual solar panels require a control MCU capable of running MPPT algorithms at sub-millisecond cadence while also generating the grid-synchronization PWM. The MCXA345VLH provides the 180 MHz performance and FlexPWM synchronization needed, and the 64-LQFP industrial temperature grade suits outdoor inverter enclosures. Embedded op-amps sense DC-bus current and AC output current for islanding detection per IEEE 1547 safety requirements.
Recommended
Recommended Products Summary
Engineering reference data for MCXA345VLH — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MCXA345VLL | MCXA345VLQ | MCXA345VPN | MCXA346VLH | STM32G431CBT6 |
|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | STMicroelectronics |
| Package | 64-LQFP (10x10 mm) | LQFP (smaller) | LQFP (different) | HVQFN (different) | 64-LQFP (10x10) - same | 48-LQFP (7x7) |
| Core | Cortex-M33F 180 MHz | Cortex-M33F 180 MHz | Cortex-M33F 180 MHz | Cortex-M33F 180 MHz | Cortex-M33F 180 MHz | Cortex-M4F 170 MHz |
| Flash | 512 KB | 512 KB | 512 KB | 512 KB | Up to 1024 KB | 128 KB |
| ADC | Up to 4x 16-bit | Up to 4x 16-bit | Up to 4x 16-bit | Up to 4x 16-bit | Up to 4x 16-bit | Up to 5x 12-bit (5 MSPS) |
| Embedded Op-Amps | Up to 4 | Up to 4 | Up to 4 | Up to 4 | Up to 4 | Up to 6 internal (4x 12-bit + 2x DAC op-amps) |
| PWM Modules | Dual FlexPWM (8 outputs) | Dual FlexPWM (8 outputs) | Dual FlexPWM (8 outputs) | Dual FlexPWM (8 outputs) | Dual FlexPWM (8 outputs) | Advanced timer (up to 12 channels) |
| Footprint Compatibility | 64-LQFP (10x10) | Different LQFP - PCB rework required | Different LQFP - PCB rework required | Different HVQFN - PCB rework required | 64-LQFP (10x10) - drop-in | 48-LQFP (7x7) - PCB rework required |
Key Differentiators
- Integrated op-amps and ADCs minimize BOM (vs STM32G431CBT6)
- 180 MHz Cortex-M33 with MAU for motor control (vs STM32G431CBT6)
- Drop-in 64-LQFP upgrade path to MCXA346VLH (vs MCXA345VLH itself)
Design Notes
Place 100 nF and 1 uF X7R ceramic decoupling capacitors within 5 mm of every VDD/VSS pin pair on the MCXA345VLH. Star-ground the analog and digital VSS pins at a single point under the exposed die flag to minimize ADC reference noise. Use a ferrite bead between digital and analog VDD rails if analog supply current exceeds 20 mA.
Do not enable more than four embedded op-amps simultaneously on the MCXA345VLH - the analog supply rail limits total current. Ensure the op-amp output stages are not back-powered by an external ADC input that exceeds VDD+0.3 V during fault events, or use series resistors for protection. The SmartDMA engine must be configured before use or peripheral DMA requests will stall.
Estimated: At maximum ambient 85 C industrial environment, the 64-LQFP package (theta_JA approximately 45 C/W) dissipates up to 1.5 W continuous without requiring a heatsink. For motor-control firmware running the Cortex-M33 at 180 MHz with both FlexPWM modules active, expect 0.6-0.8 W internal dissipation - well within the package rating for proper PCB copper area of at least 4 sq cm.
Keep ADC input traces shorter than 50 mm and surround them with a ground pour to maintain signal integrity on the MCXA345VLH. Route the FlexPWM outputs as differential pairs (PWMxH/PWMxL) with matched lengths to within 2 mm to avoid shoot-through. Place the 8 MHz or 16 MHz crystal within 5 mm of the XTAL/EXTAL pins with a guard ring tied to analog ground.
Compliance Information
RoHS and REACH compliant per NXP product page. Not AEC-Q100 qualified - for automotive motor control applications, evaluate MCX A34 automotive-grade variants from NXP. Industrial temperature grade LQFP package.