ML51OB9AE

Introduction
The NuMicro® ML51OB9AE microcontroller is a part of Nuvoton's innovative Lower Power 8051 Series that features the classic 1T 8051 core, augmented with modern low-power technologies and rich peripheral support. With an operating frequency of up to 24 MHz and with power consumption as low as 80µA/MHz during normal operation, this microcontroller is designed for applications that require energy efficiency without sacrificing performance. This device also boasts an array of peripherals and supports a wide voltage range of 1.8V to 5.5V, making it exceptionally versatile for numerous applications.

Function & Applications
The ML51OB9AE targets a diverse array of applications including wearable devices, home appliances, Internet of Things (IoT) devices, auto-alarm systems, battery management systems, and remote controllers. With its robust feature set, which includes numerous I/O options, multiple communication interfaces, and a high-speed ADC, this microcontroller can handle complex tasks in sophisticated electronic products.

Performance Parameters
Featuring a 24 MHz 8051-based core and supportive of a vast voltage range from 1.8V to 5.5V, the ML51OB9AE is tailored for high performance in energy-conscious applications. The device includes 16 KB of Flash memory and 1 KB of SRAM, combined with additional 4 KB loader ROM for ISP use. Clock stability is maintained across temperature extremes with its HIRC oscillator, and ample power management features ensure minimal current draw in various states, including a power-down current of less than 1 µA.

Package Types, Interface & Pin Configuration
The ML51OB9AE is delivered in a compact SOP20 package, containing up to 16 GPIO pins. Interface options include UART, SPI, and I²C, providing flexibility for communication duties, along with a Smart Card interface for ISO7816 support. The pin configuration is designed for easy integration into system designs with varying requirements.

Reliability & Lifespan
This microcontroller is designed to operate within a wide temperature range, from -40 ℃ to 105 ℃, ensuring reliable performance in extreme conditions. The longevity of the device is backed by Nuvoton's reputation for producing dependable and rugged components suitable for a wide array of industrial applications.

Standards & Certifications
Nuvoton's commitment to quality ensures that the ML51OB9AE complies with industry standards and certifications, providing assurance of its safety, reliability, and environmental friendliness for user applications.

Application Cases & Reference Designs
The ML51OB9AE's low-power attributes and rich feature set are ideally suited for use in smoke detectors, IoT sensor nodes, smart appliances, and data loggers. Reference designs and application notes are available from Nuvoton to support developers in incorporating the ML51OB9AE into their designs efficiently and effectively, thereby reducing time-to-market and ensuring optimized performance.