Fujitsu Semiconductor 128K serial interface FRAM MB85RS128B

Fujitsu FRAM (Ferroelectric RAM) is a new generation of non-volatile memory, superior to existing memory such as E2PROM and flash memory, lower power consumption, faster speed and multiple read and write operations. FRAM is non-volatile, but runs on other aspects such as RAM. This breakthrough storage medium is used in a variety of applications, including smart cards, RFID, security and many other applications that require high-performance non-volatile memory. Fujitsu agent Yingshang micro Fujitsu Semiconductor 128K serial interface FRAM MB85RS128B.

The MB85RS128B is a 16,384-word × 8-bit FRAM (Ferroelectric Random Access Memory) chip that uses a ferroelectric process and a silicon gate CMOS process to form a non-volatile memory cell. MB85RS128B adopts serial peripheral interface (SPI). The MB85RS128B is able to retain data without using a backup battery, which is required by the SRAM.

MB85RS128B uses a memory unit that can carry out 1012 read and write operations, which is significantly higher than the number of read and write operations supported by Flash memory and E2PROM. MB85RS128B does not need to write data as long as Flash memory or E2PROM, and MB85RS128B does not need to wait time.

■ Features • Bit configuration: 16,384 words x 8 bits •SPI corresponds to SPI mode 0(0,0) and mode 3(1,1) • Operating frequency: all commands except read33MHz (Max)READ command 25MHz(Max) • High durability: 1012 times/byte • Data retention: 10 years (+85 ° C), 95 years (+55 ° C), over 200 years (+35 ° C) • Operating power supply voltage: 2.7V to 3.6V • Low power consumption: Operating power current: 6mA(Typ@33MHz) Standby current: 9μA(TYP) • Operating ambient temperature range: −40 ° C to +85 ° C • Packaging: 8-pin plastic SOP(FPT-8P-M02) complies with RoHS

■ Pin distribution

■ Serial Peripheral Interface (SPI) Fujitsu Ferroelectric Memory MB85RS128B works as SPI slave. Two or more devices can be connected using a microcontroller equipped with an SPI port. By using a microcontroller without an SPI port, SI and SO can be used over a bus connection.