Click to expand full text
FUJITSU SEMICONDUCTOR DATA SHEET
Memory FRAM
DS501-00043-2v0-E
4 M (512 K × 8) Bit Quad SPI
MB85RQ4ML
■ DESCRIPTION
MB85RQ4ML is a FRAM (Ferroelectric Random Access Memory) chip in a configuration of 524,288 words × 8 bits, using the ferroelectric process and silicon gate CMOS process technologies for forming the nonvolatile memory cells. MB85RQ4ML adopts the Quad Serial Peripheral Interface (QSPI) which can realize a high bandwidth such as Read and Write at 54 MB/s using four bi-directional pins (Quad I/O). The MB85RQ4ML is able to retain data without using a back-up battery, as is needed for SRAM.