N76E003AT20 - 8-bit 1T 8051 MCU 18KB Flash 20-TSSOP | Nuvoton
Teilenummer: N76E003AT20 ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $0.74 | $0,74 |
| 10 | $0.65 | $6,50 |
| 100 | $0.52 | $52,00 |
| 500 | $0.45 | $225,00 |
| 1.000 | $0.39 | $390,00 |
| 3.000 | $0.34 | $1.020,00 |
N76E003AT20 Übersicht
An 8051 microcontroller is a classic CISC 8-bit CPU architecture originally introduced by Intel in 1980. The N76E003 family is built on the '1T 8051' core in which most instructions execute in 1 clock cycle instead of the legacy 12T cycles, dramatically improving throughput at the same oscillator frequency. 8051 microcontrollers sit within the broader taxonomy of microcontrollers -> embedded processors -> semiconductors, and the N76E003 specifically belongs to the low-pin-count, low-power sub-segment that competes with Microchip PIC16 and STMicroelectronics STM8 families on cost and ease-of-use.
Key features include a 16 MHz maximum core clock, 18 KB single-voltage Flash supporting in-circuit programming (ICP) and in-application programming (IAP), a 12-bit ADC with up to 8 input channels, two 16-bit timers, one self-wake-up timer (WKT), a watchdog timer (WDT), an I2C bus, a single SPI port, one UART, an internal 10 kHz and 16 MHz high-speed oscillator, plus a built-in comparator and PWM channels. Brownout detection (4 levels) and a configurable on-chip voltage regulator minimise external component count.
Typical applications include LED lighting drivers, battery chargers, small household appliances, USB-to-UART bridges, sensor hubs, and low-cost motor controllers. The combination of wide voltage tolerance, dual internal oscillators and the built-in 12-bit ADC makes the part a strong fit for direct-mains-derived power supplies after a small pass regulator stage.
When designing with this device, follow NuMaker evaluation board schematics and Nuvoton Keil/IAR project templates to avoid clock-startup pitfalls. Reserve pin P3.0/RxD for ISP boot-loader entry by hardware or external programmer. Decouple VDD with at least a 0.1 µF ceramic capacitor placed within 3 mm of the IC.
This page synthesises manufacturer datasheet parameters, distributor pricing tiers, drop-in alternatives and design notes not gathered in a single place on the Nuvoton datasheet, helping engineers compare, replace or second-source the N76E003AT20 quickly.
Drop-in-Alternativen für N76E003AT20 – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Varianten dieser Serie
Modelle derselben Serie, die drop-in-kompatibel sind mit N76E003AT20 (gleiche Bauform und Footprint) – abweichend in Communication Interfaces, Flash Memory, Mounting Type, Operating Temperature, Package.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
MS51FB9AE
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
N76E003AQ20
✅ Drop-In ⚠️ Spezifikationen ungeprüft📋 Referenzalternative (nicht im Katalog)
N76E003AT20 Grenzwerte & elektrische Eigenschaften
| Core Architecture | 8-bit 1T 8051 (1 clock per instruction) |
| Maximum Core Clock | 16 MHz |
| Flash Memory | 18 KB (18K x 8) supporting ICP/IAP |
| SRAM | 1 KB plus 256-byte auxiliary RAM |
| Supply Voltage Range | 2.4 V to 5.5 V |
| Betriebstemperatur | -40 °C to +85 °C (industrial) |
| Gehäuse | 20-pin TSSOP (TSSOP-20, 4.4 mm x 6.5 mm) |
| I/O Pins (GPIO) | Up to 18 multi-function GPIOs |
| ADC | 12-bit, up to 8 input channels |
| Internal Oscillator | 10 kHz low-speed + 16 MHz high-speed |
| Communication Interfaces | 1x UART, 1x SPI, 1x I2C, 1x ISP |
| Timers | 2x 16-bit Timer/Counter, 1x WKT self-wake timer, WDT |
| PWM Channels | Multi-channel PWM (3 complementary pairs) |
| Comparators | 1 on-chip analog comparator |
| Brown-out Detector | 4-level BOD |
| Montageart | Surface Mount (SMD) |
| Lead-free / RoHS | Lead-free / RoHS compliant |
N76E003AT20 Pin-Konfiguration
| Pin 1 | P1.7/ADC7/T0 — GPIO P1.7 / ADC channel 7 / Timer 0 input |
| Pin 2 | P1.6/ADC6/T1 — GPIO P1.6 / ADC channel 6 / Timer 1 input |
| Pin 3 | P1.5/ADC5 — GPIO P1.5 / ADC channel 5 |
| Pin 4 | P1.4/ADC4 — GPIO P1.4 / ADC channel 4 |
| Pin 5 | P1.3/ADC3/Vref+ — GPIO P1.3 / ADC channel 3 / ADC Vref+ input |
| Pin 6 | P1.2/ADC2/Vref- — GPIO P1.2 / ADC channel 2 / ADC Vref- input |
| Pin 7 | P1.1/ADC1 — GPIO P1.1 / ADC channel 1 |
| Pin 8 | P1.0/ADC0 — GPIO P1.0 / ADC channel 0 |
| Pin 9 | P3.0/RxD — GPIO P3.0 / UART receiver / ISP RxD |
| Pin 10 | P3.1/TxD — GPIO P3.1 / UART transmitter / ISP TxD |
| Pin 11 | P3.2/INT0 — GPIO P3.2 / External interrupt 0 |
| Pin 12 | P3.3/INT1 — GPIO P3.3 / External interrupt 1 |
| Pin 13 | P3.4/T0/SDA — GPIO P3.4 / Timer 0 / I2C SDA |
| Pin 14 | P3.5/T1/SCL — GPIO P3.5 / Timer 1 / I2C SCL |
| Pin 15 | RST — Active-low reset input (with internal pull-up) |
| Pin 16 | VSS — Ground (0 V) |
| Pin 17 | P2.0 — GPIO P2.0 / PWM0 output |
| Pin 18 | P2.1 — GPIO P2.1 / PWM1 output |
| Pin 19 | P2.2 — GPIO P2.2 / PWM2 output |
| Pin 20 | VDD — Positive supply voltage (2.4 V to 5.5 V) |
Typische Anwendungen
N76E003AT20 ist geeignet für 6 Anwendungs: LED Lighting Drivers, Battery Chargers / Power Banks, USB-to-UART Bridges and IoT Hubs, Small Home Appliances (Rice Cooker / Induction Plate), Brushed-DC Motor Controllers, Sensor Hubs for Industrial Nodes.
LED Lighting Drivers
The N76E003AT20's 3 complementary PWM pairs and 16 MHz 8051 core make it well suited to dimmable LED driver designs where the MCU produces 8-bit to 16-bit PWM duty at frequencies up to ~1 MHz. The 12-bit ADC samples thermistor or photo-feedback loops for constant-luminaire output, while the wide 2.4 V-5.5 V supply lets the part run directly from a 5 V or 12 V-derived rail after a linear drop. Compared with the popular STM8S003F3P6, the N76E003AT20 offers deeper Flash (18 KB vs 8 KB) and an in-house two-oscillator architecture that eliminates an external crystal on most driver boards, reducing BOM cost by roughly $0.08 USD per node.
Empfohlen
Battery Chargers / Power Banks
Charging IC front-ends need a small MCU that can monitor Vbat via its 12-bit ADC, drive a TFT status display over SPI, and toggle charge-enable MOSFETs via PWM. The N76E003AT20's 18 KB of Flash comfortably hosts CC-CV state-machine code, while 1 KB of SRAM plus 256-byte XRAM holds telemetry buffers. The internal 10 kHz low-power oscillator keeps the self-wake timer running in Power-down mode at microamp-level Iq, extending standby time on a lithium pack. A typical 5 V/2 A power-bank reference design runs the part at 3.3 V from an LDO fed by Vbat, with UART exposed for production-line trim.
Empfohlen
USB-to-UART Bridges and IoT Hubs
With one full UART, one I2C and one SPI, the N76E003AT20 can act as a low-cost bridge between a USB-serial CP2102-class controller and downstream sensor I2C/SPI slaves. The dual internal oscillators (10 kHz + 16 MHz) eliminate an external crystal on 5 V IoT hubs, while the 12-bit ADC supports analogue-side housekeeping such as rail-current sense. At ~$0.39 USD per 1k-piece, the part competes effectively with low-end PIC16 and STM8S003 bridges in BT/BLE/WiFi module carrier boards, and ISP over UART simplifies factory provisioning with the NuLink tool.
Empfohlen
Small Home Appliances (Rice Cooker / Induction Plate)
White-goods control panels require reliable -40 °C to +85 °C operation and enough Flash to hold a multi-stage cooking profile plus keypad debounce and triac-fire firmware. The N76E003AT20's 18 KB of Flash holds the full state machine plus display fonts in C with library overhead. The brown-out detector prevents corruption during half-cycle mains dips, while the on-chip analog comparator enables zero-cross detection for triac timing. Designers replacing older 12T 8051 parts benefit from the 1T core's 16 MHz throughput that often allows the part to run from the internal oscillator without a 2.4576 MHz UART-friendly crystal.
Empfohlen
Brushed-DC Motor Controllers
For low-power brushed DC motor drives (fans, pumps, small valves), the N76E003AT20's PWM channels provide a pair of complementary 8-bit outputs to gate an H-bridge driver, and the 12-bit ADC samples shunt current for closed-loop torque limiting. Code footprint for an FOC-free V/Hz style drive fits easily into the 18 KB Flash. Operating from a wide 2.4 V-5.5 V supply means the same MCU can power 3 V micro-motors or 5 V gear-motors from a single board variant. Pairing the MCU with a VIPER26LD primary-side controller yields a compact BLDC/Fan combo reference design.
Empfohlen
Sensor Hubs for Industrial Nodes
The N76E003AT20 reads a mixture of I2C sensors (temperature, humidity) and analogue signals via its 12-bit ADC, aggregates packets, and forwards them over UART or SPI to a higher-tier radio. Low-power modes - Power-down current in the microamp range with the WKT wake timer ticking on the internal 10 kHz oscillator - allow years of battery life on duty-cycled wireless nodes. The wide 2.4 V-5.5 V supply lets the same SKU run on a 3 V CR2032 coin cell or a 5 V rail fed by USB.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für N76E003AT20 – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | MS51FB9AE | N76E003AQ20 |
|---|---|---|---|
| Brand | Nuvoton Technology | Nuvoton Technology | Nuvoton Technology |
| Package | 20-pin TSSOP (4.4x6.5 mm) | 20-pin TSSOP - same | QFN-20 (3x3 mm) - smaller footprint |
| Core Architecture | 8-bit 1T 8051 | 8-bit 1T 8051 | 8-bit 1T 8051 |
| Maximum Clock | 16 MHz | ~16.6 MHz | 16 MHz |
| Flash Memory | 18 KB | 16 KB + 4 KB LDROM | 18 KB |
| SRAM | 1 KB + 256-byte XRAM | 1 KB + 256-byte XRAM | 1 KB + 256-byte XRAM |
| Supply Voltage Range | 2.4 V to 5.5 V | 2.4 V to 5.5 V | 2.4 V to 5.5 V |
| Operating Temperature | -40 °C to +85 °C | -40 °C to +105 °C (industrial+) | -40 °C to +85 °C |
| ADC | 12-bit, 8 channels | 12-bit, 15 channels | 12-bit, 8 channels |
| Status | Active, original N76E003 part | Active, recommended pin-compatible upgrade | Active, package-shrink variant |
Wichtigste Unterscheidungsmerkmale
- Only Nuvoton original N76 family in TSSOP-20 footprint (vs. MS51FB9AE)
- Standard TSSOP-20 for breadboarding and hand-rework (vs. N76E003AQ20)
Designhinweise
Place a 0.1 µF ceramic decoupling capacitor within 3 mm of the VDD pin (20) and a bulk 1-10 µF tantalum or ceramic near the IC. The internal 10 kHz + 16 MHz oscillators reduce idle current draw to microamp levels in Power-down mode, allowing the part to coexist with 2x AA cells for years. For 5 V rails, a simple LDO such as the Nuvoton LD68-5.0 saves BOM count over a switching pre-regulator.
The 'AT20' suffix denotes the narrow-body 4.4 mm x 6.5 mm TSSOP-20 land pattern, which fits most standard JLCPCB and PCB-Pool libraries. Use a 0.95 mm pitch pad set; standard hand-soldering iron with 1 mm chisel tip works well. Route reset (pin 15) away from PWM and ADC traces to avoid false resets during triac commutation. Keep the analog (P1.x) and digital (P3.x) port clusters separated by a ground-guard ring for best ADC SNR.
The N76E003 I/O ports are NOT 5 V tolerant on the analog-capable pins (P1.0-P1.7) when VDD is at 3.3 V; do not drive these pins above VDD. For ISP entry from a 5 V host use a series resistor of 100-470 Ω to P3.0/RxD and P3.1/TxD, and configure the N76E003 firmware to use an internal oscillator before blank-chip ISP. Without the correct CONFIG byte setting, ISP over UART may fail silently - always verify with the Nuvoton Keil-N76E003 flash template.
Compliance-Informationen
RoHS and lead-free status confirmed by Nuvoton product page and Digi-Key listing. REACH SVHC up to 211-substance list is manufacturer-declared but specific letter not provided in data. AEC-Q100 not applicable (consumer/industrial MCU, not automotive). For automotive designs evaluate MS51FB9AE for higher industrial -40 °C to +105 °C spec.
