NUC029SEE - Cortex-M0 72MHz 128KB Flash MCU | Nuvoton
Référence : NUC029SEE ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $1.31 | $1,31 |
| 10 | $1.24 | $12,40 |
| 100 | $1.18 | $118,00 |
| 500 | $1.12 | $560,00 |
| 1 000 | $1.06 | $1 060,00 |
NUC029SEE Présentation
A microcontroller unit (MCU) is a single-chip computer that integrates a processor core, non-volatile program memory, SRAM, and peripherals on one die. MCUs sit at the device level of the embedded-system hierarchy (semiconductor -> integrated circuit -> microcontroller -> embedded control system), executing dedicated control tasks in appliances, industrial machines, and connected devices.
Key features of the NUC029SEE include the crystal-less USB 2.0 full-speed device controller, which eliminates an external crystal and reduces BOM cost and board area; a 22.1184 MHz high-precision internal oscillator with +/-1% accuracy at 25C and 5V (full-range +/-3%); and robust electromagnetic immunity with ESD tolerance up to HBM 7 kV and EFT 4.4 kV. Peripherals include RTC, CRC, and I2C among a rich peripheral set typical of the NuMicro NUC029 series.
Architecturally, the Arm Cortex-M0 core delivers 32-bit computing with a compact instruction set and low gate count, suited to cost-sensitive industrial control. The wide 2.5V-5.5V operating window allows direct connection to 3.3V or 5V logic domains without level shifting, a significant advantage in mixed-voltage legacy industrial designs. The NuMicro NUC029 series is specifically engineered for industrial control applications requiring robust immunity and strong anti-interference capability.
Typical applications include industrial control and automation, USB-connected devices and bridges, motor control front ends, and home appliances requiring wide-voltage, wide-temperature operation. The crystal-less USB device feature makes the part especially attractive for compact USB peripherals where board space and cost dominate.
When designing with the NUC029SEE, use the internal oscillator within its stated accuracy envelope, and add an external crystal only if USB or UART timing demands tighter tolerance than +/-1% (at 25C, 5V). Confirm Flash and SRAM sizing against code growth before selecting the 128 KB SEE variant over smaller family members.
This page synthesizes distributor pricing, verified drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
Alternatives de remplacement direct pour NUC029SEE — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
NUC029SGE
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
NUC029LEE
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
NUC029FAE
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
NUC029LGE
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
NUC029KGE
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
NUC029SEE Valeurs maximales et caractéristiques électriques
| Core Processor | ARM Cortex-M0 |
| Core Size | 32-bit single-core |
| Fréquence d'horloge maximale | 72 MHz |
| Flash Memory | 128 KB (128K x 8) |
| Supply Voltage Range | 2.5 V to 5.5 V |
| Température de fonctionnement | -40C to +105C |
| Boîtier | 64-LQFP (7x7 mm) |
| Internal Oscillator | 22.1184 MHz, +/-1% at 25C/5V; +/-3% full range |
| USB | USB 2.0 full-speed device (crystal-less) |
| Peripherals | RTC, CRC, I2C, USB, and others |
| ESD Immunity | HBM 7 kV |
| EFT Immunity | 4.4 kV |
| Type de montage | Surface Mount |
| Product Series | NuMicro NUC029 |
| Application Focus | Industrial control |
Guide de configuration des broches du NUC029SEE 64-lqfp (7x7 mm)
Configuration des broches du NUC029SEE (boîtier 64-lqfp (7x7 mm)). Ce circuit intégré numérique comprend des GPIO, des interfaces de communication (UART, SPI, I2C) et des broches d'alimentation. Consultez la fiche technique du fabricant pour les fonctions alternatives des broches et les options de configuration. Indispensable pour la conception de systèmes embarqués et la conception de circuits imprimés.
Aucune donnée de brochage détaillée disponible pour NUC029SEE.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
NUC029SEE convient pour 6 applications: Industrial Control and Automation, USB Peripherals and Bridges, Home Appliances, Motor Control Front Ends, Sensor Nodes and Data Loggers, Legacy 5V System Upgrades.
Industrial Control and Automation
The NUC029SEE is purpose-built for industrial control, per Nuvoton's positioning of the NUC029 series. Its -40C to +105C operating range covers control cabinets near motors, drives, and power supplies where ambient temperatures exceed the commercial 85C ceiling, and its 2.5V-5.5V supply window allows direct interfacing with legacy 5V PLC I/O without level shifters. Electromagnetic robustness is a headline parameter: ESD tolerance up to HBM 7 kV and EFT immunity of 4.4 kV keep the MCU reliable in electrically noisy factory environments with contactors and switched inductive loads. Onboard RTC, CRC, and I2C peripherals support real-time logging, communication integrity checking, and sensor buses. Typical deployment places the MCU as a 72 MHz supervisory controller handling button/encoder inputs, relay or PWM outputs, and RS-485 or I2C expansion.
Recommandé
USB Peripherals and Bridges
The crystal-less USB 2.0 full-speed device controller is the NUC029SEE's defining advantage for USB-connected products. Because the internal 22.1184 MHz oscillator meets USB timing with +/-1% accuracy (25C, 5V), the design omits the USB crystal and load capacitors, saving roughly 20-30 mm2 of board area and the associated BOM cost per unit. Typical uses include USB-to-UART/I2C/SPI bridges, custom HID devices, sensor dongles, and configuration interfaces for industrial equipment. Placing the MCU directly on the USB bus removes an external USB-interface chip that would otherwise be needed with base-series MCUs. The 128 KB Flash accommodates USB stack plus application firmware comfortably, and the 64-LQFP 7x7 mm package provides enough GPIO for both USB functions and parallel device-side logic. Firmware timing margin should be validated at 3.3V operation where the full-range +/-3% oscillator tolerance applies.
Recommandé
Home Appliances
White goods and small appliances demand wide-voltage MCUs tolerant of mains-borne transients, and the NUC029SEE matches both needs: 2.5V-5.5V operation supports transformer-derived or linearly regulated supplies without precision regulation, and ESD HBM 7 kV / EFT 4.4 kV immunity addresses switching noise from compressors, fans, and relays. The -40C to +105C range suits oven-adjacent or compressor-bay mounting locations where ambient temperatures spike. The RTC peripheral enables clock and delay-timer functions, while the 72 MHz Cortex-M0 core handles touch-key scanning, encoder input, and display multiplexing simultaneously. The 128 KB Flash leaves headroom for localized UI firmware and OTA-style update payloads. Using the crystal-less USB variant in appliance service ports also enables factory programming and diagnostics without an external oscillator, reducing total board cost in high-volume consumer production.
Recommandé
Motor Control Front Ends
In fan, pump, and small motor systems, the NUC029SEE serves as the supervisory controller handling speed commands, fault monitoring, and communication while a driver stage handles power. Its 72 MHz Cortex-M0 core generates PWM with sufficient resolution for brushed-DC and stepper control, and the -40C to +105C rating survives enclosures mounted near motor windings. The 2.5V-5.5V supply range lets the MCU share the 5V control rail used by Hall sensors and optocouplers directly. EFT 4.4 kV immunity matters here because PWM switching couples fast transients into control ground; Nuvoton's series-level anti-interference design targets exactly this environment. I2C connects current/voltage monitor ICs, and the RTC supports run-hour metering for predictive maintenance. Designers should route PWM and analog sense traces separately and verify ADC reference stability under the full-range oscillator tolerance before committing to production.
Recommandé
Sensor Nodes and Data Loggers
The NUC029SEE's RTC, I2C, and CRC peripherals make it a natural host for sensor acquisition nodes and data loggers. The CRC engine validates data packets written to external EEPROM or transmitted over UART/RS-485, offloading the Cortex-M0 core. The RTC maintains timestamps through power cycles with a backup domain, essential for compliance-oriented logging in cold-chain, environmental, and energy-monitoring applications. Its 2.5V-5.5V operation allows direct battery-backed or single-cell-supplied designs, and 128 KB Flash stores protocol stacks plus ring-buffered logging code, with the SEE's extended temperature range supporting outdoor and freezer deployments down to -40C. I2C connects temperature, pressure, and humidity sensors; the 22.1184 MHz internal oscillator eliminates timing crystals for cost-sensitive nodes. Sample rate and sleep-current budgeting should be modeled early, since peripheral clock gating behavior in the NUC029 family governs standby draw.
Recommandé
Legacy 5V System Upgrades
Many industrial boards still run 5V logic from the HC908/HCS08 era, and the NUC029SEE is a pragmatic upgrade host: its 2.5V-5.5V input range accepts the existing 5V rail directly, and its 64-LQFP footprint offers dense GPIO comparable to legacy 64-pin MCUs. The 32-bit Cortex-M0 at 72 MHz delivers an order-of-magnitude performance uplift over 8-bit predecessors while retaining low migration risk thanks to industrial temperature (-40C to +105C) and EFT 4.4 kV immunity matching the original design's noise environment. Crystal-less USB can be added to upgraded systems for field firmware updates without touching the existing oscillator budget. Engineers migrating from NXP/Freescale 8-bit parts (such as the MC9S08 family) should map peripheral registers one-to-one and re-verify interrupt latency, but the electrical envelope requires no power-supply redesign, keeping the retrofit cost focused on firmware.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour NUC029SEE — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | NUC029SGE | NUC029LEE | NUC029FAE | NUC029LGE |
|---|---|---|---|---|---|
| Package | 64-LQFP (7x7 mm) | 64-LQFP (7x7 mm) - same | 64-LQFP (7x7 mm) - same | 64-LQFP (7x7 mm) - same | 64-LQFP (7x7 mm) - same |
| Brand | Nuvoton Technology Corporation | Nuvoton Technology Corporation | Nuvoton Technology Corporation | Nuvoton Technology Corporation | Nuvoton Technology Corporation |
| Core | ARM Cortex-M0, 32-bit | ARM Cortex-M0, 32-bit | ARM Cortex-M0, 32-bit | ARM Cortex-M0, 32-bit | ARM Cortex-M0, 32-bit |
| Supply Voltage | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 2.5 V to 5.5 V |
| Operating Temperature | -40C to +105C | -40C to +105C | -40C to +105C | -40C to +105C | -40C to +105C |
Principaux différenciateurs
- Crystal-less USB 2.0 full-speed device (vs NUC029FAE)
- Balanced 128 KB Flash density (vs NUC029LEE)
- Cost-effective mid-tier memory option (vs NUC029SGE)
Notes de conception
The crystal-less USB interface depends on the internal 22.1184 MHz oscillator meeting USB full-speed tolerance. Nuvoton specifies +/-1% accuracy only at 25C and 5V; across the full voltage (2.5V-5.5V) and temperature (-40C to +105C) range the tolerance widens to +/-3%. If your product must pass USB compliance across the whole environmental envelope, validate eye diagrams at the corners, or add an external crystal for production margin.
The 2.5V-5.5V supply range tolerates unregulated or coarsely regulated rails, but decouple with at least a 100 nF ceramic at each VDD pin plus a 4.7-10 uF bulk capacitor near the 64-LQFP package. On 5V industrial rails subject to EFT bursts, add a series ferrite bead and local TVS to protect the supply pin - the part tolerates HBM 7 kV / EFT 4.4 kV at the pins, but board-level surge on long cables still needs external clamping.
The 64-LQFP 7x7 mm package has 0.5 mm pitch; use the standard LQFP-64 land pattern and keep the USB D+/D- pair routed as a 90-ohm differential pair with length matching within 1-2 mm. Because the internal oscillator removes the crystal, reserve routing space for an optional crystal footprint at OSC pins - this lets a single PCB serve both the SEE (crystal-less) and cost-reduced or timing-critical variants without respin.
Informations de conformité
Compliance status not stated in the provided verified web data; consult the Nuvoton product page or distributor RoHS certificates before export-controlled designs.
