FRAM GX85RS2MC (FM25V20A) Application in Multi-MCU System

FRAM‘s core technology is ferroelectric crystal material, the chip can be at room temperature, there is no electric field, the data to maintain this state for more than 100 years, FRAM does not need to be refreshed regularly, can be in the case of power outages to save the data, is particularly suitable for those who have a high demand for the write time and number of applications, and with its MCU interface circuitry is simple, easy to apply, this paper introduces the GXSC This paper introduces the application of GXSC GX85RS2MC in its multi-MCU system.

GX85RS2MC (FM25V20A) compared to SRAM, FLASH and EEPROM have many advantages: non-volatile, fast write speed, the key is to use a ferroelectric memory can be replaced by the original MCU needs to be configured with two to three different memories, a unified memory architecture so that the user in the cost and flexibility to benefit.

For example, in the design of the carbon control instrument system, due to the control of carbon potential timing requirements, and the system consists of two subsystems, each subsystem has to frequently read and write the memory, so the original memory is replaced with FRAM in order to meet the system requirements.

FRAM GX85RS2MC Performance Characteristics:

- Capacity: 2M bit, Interface type: SPI interface (Mode 0 and Mode 3)

- Operating voltage: 2.7V to 3.6V, operating frequency: 25MHz

- Power consumption: 4.8 mA (25MHz), standby power consumption 9 µA

- High-speed read characteristics: support for 40MHz high-speed read command

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

- Package: 8-pin SOP wide-body 208 mil package, RoHS compliant