Item specifics
Description
N76E003AT20-T Product Overview
The N76E003AT20-T is a high-speed 1T 8051-core microcontroller from Nuvoton Technology, part of the NuMicro® N76E003 series. Featuring an instruction set fully compatible with standard 80C51 while delivering significantly enhanced performance, the N76E003AT20-T is housed in a TSSOP-20 (4.4×6.5mm) package. The N76E003AT20-T operates at up to 16MHz across a wide 2.4V to 5.5V voltage range with an industrial temperature range of -40°C to +105°C, and offers high noise immunity of 7kV ESD / 4kV EFT. The N76E003AT20-T integrates 18KB Flash (APROM), 1KB SRAM, and configurable Data Flash. With rich peripherals including 18 GPIO, 8-channel 12-bit ADC (500KSPS), 6-channel 16-bit PWM, 2 UART, 1 SPI, and 1 I2C, the N76E003AT20-T provides a cost-effective embedded control solution for access control systems, thermostats, Bluetooth speakers, electric meters, data collectors, battery chargers, beauty equipment, and small home appliances.
| Model | N76E003AT20-T |
| Series | NuMicro® N76E003 |
| CPU Core | 1T 8051 (Standard 80C51 compatible) |
| Max Frequency | 16 MHz |
| Program Memory | 18KB Flash (APROM, shared with Data Flash) |
| LDROM | Configurable 4K/3K/2K/1K/0K Bytes |
| RAM | 1KB SRAM + 768 Bytes XRAM |
| Operating Voltage | 2.4V ~ 5.5V |
| Operating Temp | -40°C ~ +105°C |
| ESD Immunity | 7 kV (HBM) |
| EFT Immunity | 4 kV |
| I/O Pins | Up to 18 GPIO + 1 Input-only |
| ADC | 8 channels × 12-bit, up to 500 KSPS |
| PWM | 6× 16-bit with Dead-Zone & Fault Brake |
| Connectivity | 2×UART (115200bps), 1×SPI (8MHz), 1×I2C (400kHz) |
| Timers | 4×16-bit (Timer0/1/2/3), WDT, WKT |
| Clock System | 16MHz HS internal OSC (±2%), 10kHz LS internal OSC |
| Power Management | BOD (4-level), POR |
| Low-Power Modes | Idle Mode, Power-Down Mode |
| Programming | ICP, ISP, IAP |
| Package | TSSOP-20 (4.4 × 6.5 × 0.65 mm) |
N76E003AT20-T Typical Applications
Battery chargers and wireless chargers using the N76E003AT20-T
LED lighting control and dimming drivers based on the N76E003AT20-T
Small home appliance control (rice cookers, induction cookers, soy milk makers) with the N76E003AT20-T
Temperature sensing devices and thermostats featuring the N76E003AT20-T
Smoke detectors and gas detectors built with the N76E003AT20-T
Access control systems/alarms powered by the N76E003AT20-T
Digital voltmeters and data loggers using the N76E003AT20-T
Bluetooth speakers and beauty devices integrating the N76E003AT20-T
FAQ
Q: What advantage does the 1T architecture offer over traditional 8051?
A: Conventional 80C51 requires 12 clocks per machine cycle, while the N76E003AT20-T's 1T architecture needs only one clock, delivering 12× faster instruction execution. At the same 16MHz frequency, actual computing performance far exceeds traditional 8051.
Q: Does it support ISP in-system upgrade?
A: Yes. The N76E003AT20-T includes configurable LDROM (up to 4KB) for ISP boot code. It supports ICP and ISP via UART for field firmware updates.
Q: Can MS51FB9AE directly replace N76E003AT20-T?
A: Yes. The MS51FB9AE is fully pin-compatible with the N76E003AT20-T in TSSOP-20, allowing direct replacement without schematic changes. The N76E003AT20-T enables smooth migration with enhanced performance.
Q: What are the clock system features?
A: The N76E003AT20-T supports 3 clock sources: external clock input, 16MHz high-speed internal oscillator (factory-calibrated, ±2% over all conditions, ±1% at VDD=5.0V), and 10kHz low-speed internal oscillator. All clock sources support on-the-fly software switching without reset for flexible power-performance balance.
Q: What are the PWM output features?
A: The N76E003AT20-T includes a 16-bit PWM generator outputting 6× 16-bit PWM channels with configurable dead-time and Fault Brake function - ideal for motor control and power management applications.
Q: Is an evaluation board available?
A: Yes. For the N76E003AT20-T, Nuvoton offers the NT-N76E003 evaluation board with 100% emulation and on-board debugging, paired with the Nu-Link debugger and Keil/IAR development environments for rapid evaluation and embedded application development. The open-source community also provides tools like nuvoprog for programming support.
Why Choose QIXINWEI
Years of experience in the electronics industry. Trusted by global customers.
Massive In-Stock Inventory - Ready to ship promptly
BOM Matching Service - One-stop solution, save time
PCBA Customization - Professional engineering team creates tailor-made solutions based on your needs
Cost-Effective & Efficient - Better channel, better cost
A dedicated team makes your procurement smoother.
Contact us for BOM quotes or PCBA inquiries