Embedded - Microcontrollers

MB9AF156NBBGL-GE1 is an 8-bit MCU which belongs to the Fx3 series of single-chip microcontrollers designed by Fujitsu Semiconductor. It is based on a high-performance 8-bit CPU core which supports various performance optimization instructions and an on-chip flash memory (of up to 32KB) for program and data storage. Additionally, it also includes a variety of enhanced peripheral modules, such as two 16-bit timer/counters, 3 UARTs, 176 12-bit A/D converters and serial communications interfaces.

Application fields

This MCU is typically used in operations where low power consumption, high performance, and good interoperability are essential. Given its reduced size, this chip is mainly used in small-sized and low-power devices, such as smart meters, I/O controllers, home automation, automotive systems, smart watches, cell phone peripheral devices, medical instrumentations, audio/video equipment, and security systems. MB9AF156NBBGL-GE1 was designed with safety features in mind and its operation complies with the EN 50598 specification. The chip supports various types of power-saving modes and wake-up operations, such as low power mode (LPM), sleep mode (Sm), wait mode (Wt), timer mode (Tm), and backup mode (B). Thus, it is suitable for battery-powered applications.

Working Principle

The MB9AF156NBBGL-GE1 has an internal ROM, RAM, and an 8-bit CPU core. This CPU is capable of fetching and executing instructions from the ROM at a speed of up to 16 MHz. The ROM is further equipped with an On-Chip Flash Memory (OCFM) which allows the user to store programs and data. Additionally, a Variety of Internal Registers enable the user to control the I/O and the execution of instructions on the chip. The Internal RAM provides a temporary workspace for the processor in the execution of the instructions.

The built-in peripheral modules include two 16-bit timer/counters, three UARTs, 176 12-bit A/D converters, and 3 10-bit A/D converters. The UARTs provide telecommunication between the MCU and other intelligent devices in the field. The A/D converters are used for analog to digital conversion and can measure a wide array of electrical parameters, such as temperature and optical signals. The two 16-bit timer/counters can be used for timing operations and generating pulses of certain frequency. Additionally, the chip also includes an I2C bus which enables simple and efficient communication between the chip and other devices.

Conclusion

The MB9AF156NBBGL-GE1 is a highly versatile and low power consumption 8-bit MCU which offers a wide range of features and benefits. With its various peripheral modules and powerful performance, the chip is suited for various types of operations and application fields, such as smart meters, I/O controllers, home automation, automotive systems, and medical instrumentations. Its on-chip flash memory allows the user to store their codes and data and its advanced features, such as its power-saving modes, provide the user with an efficient way of operating their system with minimal power consumption.