Using FRAM GX85RS2MC (FM25V20A) in Hearing Aids Reduces Circuit Noise

Conventional hearing aids typically use EEPROM to record information, but FRAM can write data faster and uses less energy. For example, FRAM can write 64 bytes of data at the same frequency 20 times faster than EEPROM and consumes 1/140th of the power of FRAM, which means less frequent battery changes.

Another unique advantage of FRAM is the ability to reduce noise when writing data to the memory; EEPROMs use a high internal voltage of 10V to erase and write data to the memory. This high supply voltage creates noise in the circuitry when writing, a problem that is solved by using FRAM, which does not require a high voltage to erase and write data.

The application characteristics of the FRAM GX85RS2MC are as follows:

1, GX85RS2MC is configured as 16,384 × 8 bits, forming a non-volatile memory cell through ferroelectric process and silicon gate CMOS process technology. Unlike SRAM, the chip does not require a battery to maintain data, effectively improving data security.

2, GX85RS2MC adopts SOP8 small package, which can save the space of hearing aid PCB board design and facilitate the layout;

3, GX85RS2MC any sector programming erase cycle typical value of up to 1 million times, data retention years typical value of 25 years, can fully meet the product reliability requirements;

4, GX85RS2MC maximum power consumption of 5mA, the maximum standby current is only 10μA, can effectively reduce power consumption, extend the detector battery life;

5, GX85RS2MC support SPI serial interface, maximum 25MHz operating frequency, can meet the master chip fast communication needs;

6, GX85RS2MC operating voltage of 2.7V to 3.6V, standby power consumption of only 7μA, fully meet the system‘s low-power requirements, and the operating temperature range is -40 ℃ to 85 ℃, in more scenarios can also ensure the stability of data reading and writing.

7,GX85RS2MC is compatible with MB85RS2MT (Fujitsu) and FM25V20A (Cypress), and the price of GX85RS2MC has certain advantages, GXSC can provide stable supply and technical support.