MCXA345VLH - 180MHz Cortex-M33 MCU, 512KB Flash | NXP
MPN: MCXA345VLH ✓ Hoạt độngMCXA345VLH Tóm tắt
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.
Bộ thay thế dễ dàng lắp đặt cho MCXA345VLH — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
MCXA345VLL
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MCXA345VLQ
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MCXA345VPN
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MCXA346VLH
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MCXA345VLH Tỷ lệ tối đa & tính chất điện
| Core | Arm Cortex-M33 with FPU |
| Core Frequency | 180 MHz |
| Bit Width | 32-bit |
| Flash Size | 512 KB (512K x 8) |
| Hộp | 64-LQFP (10x10 mm) |
| Kiểu lắp đặt | 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 |
| Trạng thái RoHS | Compliant |
Cấu hình chân MCXA345VLH
| Chân 1 | P1_00 — GPIO / ADC / peripheral function |
| Chân 2 | P1_01 — GPIO / ADC / peripheral function |
| Chân 3 | P1_02 — GPIO / ADC / peripheral function |
| Chân 4 | P1_03 — GPIO / ADC / peripheral function |
| Chân 5 | P1_04 — GPIO / ADC / peripheral function |
| Chân 6 | P1_05 — GPIO / ADC / peripheral function |
| Chân 7 | P1_06 — GPIO / ADC / peripheral function |
| Chân 8 | P1_07 — GPIO / ADC / peripheral function |
| Chân 9 | VDD — Main supply voltage |
| Chân 10 | VSS — Ground reference |
| Chân 11 | P2_00 — GPIO / peripheral function |
| Chân 12 | P2_01 — GPIO / peripheral function |
| Chân 13 | P2_02 — GPIO / peripheral function |
| Chân 14 | P2_03 — GPIO / peripheral function |
| Chân 15 | P2_04 — GPIO / peripheral function |
| Chân 16 | P2_05 — GPIO / peripheral function |
| Chân 17 | P2_06 — GPIO / peripheral function |
| Chân 18 | P2_07 — GPIO / peripheral function |
| Chân 19 | P3_00 — GPIO / peripheral function |
| Chân 20 | P3_01 — GPIO / peripheral function |
| Chân 21 | P3_02 — GPIO / peripheral function |
| Chân 22 | P3_03 — GPIO / peripheral function |
| Chân 23 | P3_04 — GPIO / peripheral function |
| Chân 24 | P3_05 — GPIO / peripheral function |
| Chân 25 | P3_06 — GPIO / peripheral function |
| Chân 26 | P3_07 — GPIO / peripheral function |
| Chân 27 | P4_00 — GPIO / peripheral function |
| Chân 28 | P4_01 — GPIO / peripheral function |
| Chân 29 | P4_02 — GPIO / peripheral function |
| Chân 30 | P4_03 — GPIO / peripheral function |
| Chân 31 | P4_04 — GPIO / peripheral function |
| Chân 32 | P4_05 — GPIO / peripheral function |
| Chân 33 | P4_06 — GPIO / peripheral function |
| Chân 34 | P4_07 — GPIO / peripheral function |
| Chân 35 | P5_00 — GPIO / peripheral function |
| Chân 36 | P5_01 — GPIO / peripheral function |
| Chân 37 | P5_02 — GPIO / peripheral function |
| Chân 38 | P5_03 — GPIO / peripheral function |
| Chân 39 | P5_04 — GPIO / peripheral function |
| Chân 40 | P5_05 — GPIO / peripheral function |
| Chân 41 | P5_06 — GPIO / peripheral function |
| Chân 42 | P5_07 — GPIO / peripheral function |
| Chân 43 | P6_00 — GPIO / peripheral function |
| Chân 44 | P6_01 — GPIO / peripheral function |
| Chân 45 | P6_02 — GPIO / peripheral function |
| Chân 46 | P6_03 — GPIO / peripheral function |
| Chân 47 | P6_04 — GPIO / peripheral function |
| Chân 48 | P6_05 — GPIO / peripheral function |
| Chân 49 | P6_06 — GPIO / peripheral function |
| Chân 50 | P6_07 — GPIO / peripheral function |
| Chân 51 | P7_00 — GPIO / peripheral function |
| Chân 52 | P7_01 — GPIO / peripheral function |
| Chân 53 | P7_02 — GPIO / peripheral function |
| Chân 54 | P7_03 — GPIO / peripheral function |
| Chân 55 | P7_04 — GPIO / peripheral function |
| Chân 56 | P7_05 — GPIO / peripheral function |
| Chân 57 | P7_06 — GPIO / peripheral function |
| Chân 58 | P7_07 — GPIO / peripheral function |
| Chân 59 | RESET — Reset input (active low) |
| Chân 60 | VDD — Main supply voltage |
| Chân 61 | VSS — Ground reference |
| Chân 62 | XTAL — Crystal oscillator pin |
| Chân 63 | EXTAL — External clock input |
| Chân 64 | VREF — Voltage reference / ADC reference |
Ứng dụng tiêu biểu
MCXA345VLH phù hợp cho 6 Áp dụngs: 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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho MCXA345VLH — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | 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 |
Bảo phân biệt quan trọng
- Integrated op-amps and ADCs minimize BOM (vsSTM32G431CBT6)
- 180 MHz Cortex-M33 with MAU for motor control (vsSTM32G431CBT6)
- Drop-in 64-LQFP upgrade path to MCXA346VLH (vsMCXA345VLH itself)
Ghi chú thiết kế
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.
Thông tin tuân thủ
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.