MB85RS64A

FUJITSU SEMICONDUCTOR DATA SHEET DS501-00009-0v01-E Memory FRAM 64 K (8 K × 8) Bit SPI MB85RS64A ■ DESCRIPTION MB85RS64A is a FRAM (Ferroelectric Random Access Memory) chip in a configuration of 8,192 words × 8 bits, using the ferroelectric process and silicon gate CMOS process technologies for forming the nonvolatile memory cells. MB85RS64A adopts the Serial Peripheral Interface (SPI). The MB85RS64A is able to retain data without using a back-up battery, as is needed for SRAM. The memory cells used in the MB85RS64A can be used for 1010 read/write operations, which is a significant improvement over the number of read and write operations supported by Flash memory and E2PROM. MB85RS64A does not take long time to write data unlike Flash memories nor E2PROM, and MB85RS64A takes no wait time. ■ FEATURES Bit configuration Operating power supply voltage Operating frequency Serial Peripheral Interface Operating temperature range Data retention High endurance Package : : : : : : : : 8,192 words × 8 bits 3.0 V to 3.6 V 20 MHz (Max) SPI (Serial Peripheral Interface) Correspondent to SPI mode 0 (0, 0) and mode 3 (1, 1) −40 °C to +85 °C 10 years (+55 °C) 10 Billion Read/writes 8-pin plastic SOP (FPT-8P-M02) Copyright©2011 FUJITSU SEMICONDUCTOR LIMITED All rights reserved 2011.6 www.DataSheet4U.net MB85RS64A ■ PIN ASSIGNMENT (TOP VIEW) CS 1 8 VCC SO 2 7 HOLD WP 3 6 SCK GND 4 5 SI (FPT-8P-M02) ■ PIN FUNCTIONAL DESCRIPTIONS Pin No. Pin Name Functiona...