embedded-processors-controllers

MS51FB9AE

Full part number: nuvoton-tech-ms51fb9ae-t-20ccf6ff2ecfc478

Key datasheet specifications and the closest alternatives, ranked by parametric similarity and grounded in the manufacturer datasheet.

01 — Overview

This NuMicro MS51 Series Product Brief covers the 8-bit high-performance 1T 8051-based microcontroller. It serves as an overview of the MCU's architecture, memory configuration, and peripheral capabilities. Key parameters include a voltage range of 2.4V to 5.5V, up to 32Kbytes of Flash memory with IAP support, and 2Kbytes of auxiliary RAM. The device features two full-duplex UARTs, SPI, I2C, up to 12 PWM channels, and a 12-bit ADC. It supports dual clock sources including a factory-trimmed 24MHz internal oscillator, consumes low power via Idle or Power-down modes, and operates across -40°C to +105°C.

02 — Key specifications

Datasheet parameters

ParameterMinTypMaxConditions
supply voltage range 2.4 V — 5.5 V
operating temperature -40 °C — 105 °C
clock frequency — 24 MHz —
cpu speed — 24 MHz —
program memory size — 16.4 kB —
ram size — 1.02 kB —
io count — 18 —
adc resolution — 12 bit —
core size — 8 bit —
03 — Alternatives

Closest matches to MS51FB9AE

ATmega168A 1.4× lower operating temperature, 1.2× lower adc resolution, 1.2× lower clock frequency
ATmega32A 2.0× higher program memory size, 1.5× lower clock frequency, 1.5× lower cpu speed
ATmega8A 2.0× lower program memory size, 1.5× lower clock frequency, 1.5× lower cpu speed
CH552G 1.5× lower adc resolution, 1.4× lower operating temperature, 1.2× higher ram size
ATmega328P 2.0× higher program memory size, 2.0× higher ram size, 1.5× lower cpu speed
ATmega328PB 2.0× higher program memory size, 2.0× higher ram size, 1.2× lower adc resolution
ATmega48PA 4.1× lower program memory size, 2.0× lower ram size, 1.2× lower adc resolution
ATtiny1616 9.6× lower clock frequency, 2.0× higher ram size, 1.3× lower supply voltage range
04 — FAQ

Frequently asked questions

What is the ADC resolution?

The ADC resolution is 12 bit.

What is the maximum clock frequency?

The maximum clock frequency is 24 MHz.

What is the core size of the nuvoton-tech-ms51fb9ae-t-20ccf6ff2ecfc478?

The core size is 8 bit.

What is the CPU speed?

The CPU speed is 24 MHz.

What is the I/O count for the nuvoton-tech-ms51fb9ae-t-20ccf6ff2ecfc478?

The I/O count is 18.

What is the maximum operating temperature?

The maximum operating temperature is 105 °C.

What is the program memory size?

The program memory size is 16.4 kB.

What is the RAM size of the Nuvoton MS51FB9AE?

The RAM size is 1.02 kB.

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