N76E003AT20-T High-Speed 1T 8051 Core 8-bit MCU 18KB Flash 16MHz TSSOP-20

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.

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.

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