Wireless Sensor Network Application Solution Based on the FRAM GX85RS2MC Microcontroller

Wireless sensor networks collect real-time data through sensors and enable remote updates. However, conventional microcontroller technology, sensor power supply issues, and the limited number of write cycles for Flash storage often fail to meet the requirements of such applications. This paper primarily discusses the use of the FRAM GX85RS2MC to address sensor data storage and microcontroller technology challenges.

Conventional microcontrollers typically use Flash and EEPROM storage. The FRAM GX85RS2MC-based microcontroller ensures over 100 times faster data write speeds and a 250% reduction in power consumption. When executing code from ferroelectric memory, power consumption is further reduced. FRAM supports up to 1 million write cycles, which is virtually unlimited for many applications.

The core technology of the GXSC GX85RS2MC is the combination of ferroelectric process technology and silicon gate CMOS process technology to form non-volatile storage units. It operates within a voltage range of 2.7V to 3.6V, with a minimum standby power consumption of just 9 microamps. It reliably stores data without delay even at low current levels, preventing data loss after power failure. Additionally, the GX85RS2MC is a non-volatile memory that provides data retention capability in all power modes. With FRAM, there is no need for separate EEPROM or battery-powered SRAM.

GX85RS2MC performance parameters:

• Capacity: 2M bits, with SPI interface;

• Operating frequency: 25MHz;

• High-speed read capability: supports 40MHz high-speed read commands;  

• Operating temperature range: -40°C to 85°C;  

• Package type: 8-pin SOP package, RoHS compliant;  

• Performance compatible with MB85RS2MT (Fujitsu) and FM25V20A (Cypress);