MCXA345VLH - 180MHz Cortex-M33 MCU, 512KB Flash | NXP
料号： MCXA345VLH ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 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 概述
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.
直接替换替代料： MCXA345VLH ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
快速对比工具——选择替代料号进行并排对比：
MCXA345VLL
✅ 直接替换📋 参考替代料（不在目录中）
MCXA345VLQ
✅ 直接替换📋 参考替代料（不在目录中）
MCXA345VPN
✅ 直接替换📋 参考替代料（不在目录中）
MCXA346VLH
✅ 直接替换📋 参考替代料（不在目录中）
MCXA345VLH 最大额定值与电气特性
| Core | Arm Cortex-M33 with FPU |
| Core Frequency | 180 MHz |
| Bit Width | 32-bit |
| Flash Size | 512 KB (512K x 8) |
| 封装 | 64-LQFP (10x10 mm) |
| 安装类型 | 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 状态 | Compliant |
MCXA345VLH 引脚配置
| 引脚 1 | P1_00 — GPIO / ADC / peripheral function |
| 引脚 2 | P1_01 — GPIO / ADC / peripheral function |
| 引脚 3 | P1_02 — GPIO / ADC / peripheral function |
| 引脚 4 | P1_03 — GPIO / ADC / peripheral function |
| 引脚 5 | P1_04 — GPIO / ADC / peripheral function |
| 引脚 6 | P1_05 — GPIO / ADC / peripheral function |
| 引脚 7 | P1_06 — GPIO / ADC / peripheral function |
| 引脚 8 | P1_07 — GPIO / ADC / peripheral function |
| 引脚 9 | VDD — Main supply voltage |
| 引脚 10 | VSS — Ground reference |
| 引脚 11 | P2_00 — GPIO / peripheral function |
| 引脚 12 | P2_01 — GPIO / peripheral function |
| 引脚 13 | P2_02 — GPIO / peripheral function |
| 引脚 14 | P2_03 — GPIO / peripheral function |
| 引脚 15 | P2_04 — GPIO / peripheral function |
| 引脚 16 | P2_05 — GPIO / peripheral function |
| 引脚 17 | P2_06 — GPIO / peripheral function |
| 引脚 18 | P2_07 — GPIO / peripheral function |
| 引脚 19 | P3_00 — GPIO / peripheral function |
| 引脚 20 | P3_01 — GPIO / peripheral function |
| 引脚 21 | P3_02 — GPIO / peripheral function |
| 引脚 22 | P3_03 — GPIO / peripheral function |
| 引脚 23 | P3_04 — GPIO / peripheral function |
| 引脚 24 | P3_05 — GPIO / peripheral function |
| 引脚 25 | P3_06 — GPIO / peripheral function |
| 引脚 26 | P3_07 — GPIO / peripheral function |
| 引脚 27 | P4_00 — GPIO / peripheral function |
| 引脚 28 | P4_01 — GPIO / peripheral function |
| 引脚 29 | P4_02 — GPIO / peripheral function |
| 引脚 30 | P4_03 — GPIO / peripheral function |
| 引脚 31 | P4_04 — GPIO / peripheral function |
| 引脚 32 | P4_05 — GPIO / peripheral function |
| 引脚 33 | P4_06 — GPIO / peripheral function |
| 引脚 34 | P4_07 — GPIO / peripheral function |
| 引脚 35 | P5_00 — GPIO / peripheral function |
| 引脚 36 | P5_01 — GPIO / peripheral function |
| 引脚 37 | P5_02 — GPIO / peripheral function |
| 引脚 38 | P5_03 — GPIO / peripheral function |
| 引脚 39 | P5_04 — GPIO / peripheral function |
| 引脚 40 | P5_05 — GPIO / peripheral function |
| 引脚 41 | P5_06 — GPIO / peripheral function |
| 引脚 42 | P5_07 — GPIO / peripheral function |
| 引脚 43 | P6_00 — GPIO / peripheral function |
| 引脚 44 | P6_01 — GPIO / peripheral function |
| 引脚 45 | P6_02 — GPIO / peripheral function |
| 引脚 46 | P6_03 — GPIO / peripheral function |
| 引脚 47 | P6_04 — GPIO / peripheral function |
| 引脚 48 | P6_05 — GPIO / peripheral function |
| 引脚 49 | P6_06 — GPIO / peripheral function |
| 引脚 50 | P6_07 — GPIO / peripheral function |
| 引脚 51 | P7_00 — GPIO / peripheral function |
| 引脚 52 | P7_01 — GPIO / peripheral function |
| 引脚 53 | P7_02 — GPIO / peripheral function |
| 引脚 54 | P7_03 — GPIO / peripheral function |
| 引脚 55 | P7_04 — GPIO / peripheral function |
| 引脚 56 | P7_05 — GPIO / peripheral function |
| 引脚 57 | P7_06 — GPIO / peripheral function |
| 引脚 58 | P7_07 — GPIO / peripheral function |
| 引脚 59 | RESET — Reset input (active low) |
| 引脚 60 | VDD — Main supply voltage |
| 引脚 61 | VSS — Ground reference |
| 引脚 62 | XTAL — Crystal oscillator pin |
| 引脚 63 | EXTAL — External clock input |
| 引脚 64 | VREF — Voltage reference / ADC reference |
典型应用
MCXA345VLH 适用于 6 应用s: 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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
推荐产品汇总
工程参考数据： MCXA345VLH ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | 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 |
关键差异点
- Integrated op-amps and ADCs minimize BOM （对比 STM32G431CBT6)
- 180 MHz Cortex-M33 with MAU for motor control （对比 STM32G431CBT6)
- Drop-in 64-LQFP upgrade path to MCXA346VLH （对比 MCXA345VLH itself)
设计说明
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.
合规信息
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.