FUJITSU SEMICONDUCTORDATA SHEETDS501-00060-1v0-E Memory ReRAM 8M (1024 K 8) Bit SPIMB85AS8MT ■ DESCRIPTION MB85AS8MT is a ReRAM (Resistive Random Access Memory) chip in a configuration of 1,048,576 words 8 bits, using the resistance-variable memory process and silicon gate CMOS process technologies for forming the nonvolatile memory cells. MB85AS8MT adopts the Serial Peripheral Interface (SPI). MB85AS8MT is able to retain data without using a back-up battery, as is needed for SRAM. The memory cells used in the MB85AS8MT can be used for 1 106 rewrite operations. ■ FEATURES • Bit configuration : 8 Mbits (1,048,576 words 8 bits) • Serial Peripheral Interface : SPI (Serial Peripheral Interface) Correspondent to SPI mode 0 (0, 0) and mode 3 (1, 1) • Write buffer size : 256 bytes • Operating frequency : 10 MHz (Max) • Data endurance : 1 106 times / 4bytes* *4 bytes are selected by A1 to A0. • Data retention : 10 years (+85 C) • Operating power supply voltage : 1.6 V to 3.6 V • Operating power supply current : Write current 1.5 mA (Typ) Read current 0.15 mA (Typ@5 MHz) Standby current 60 A (Typ) Sleep current 6 A (Typ) • Operation ambient temperature range : -40 C to +85 C • Package : 8-pin plastic SOP, 11-pin plastic WLP RoHS compliant Copyright 2019 FUJITSU SEMICONDUCTOR LIMITED 2019.7 Document Outline DESCRIPTION FEATURES PIN ASSIGNMENT PIN FUNCTIONAL DESCRIPTIONS BLOCK DIAGRAM SPI MODE SERIAL PERIPHERAL INTERFACE (SPI) STATUS REGISTER OP-CODE COMMAND WRITING OPERATION OF NONVOLATILE MEMORY 1. Address counter control 2. WIP polling BLOCK PROTECT WRITING PROTECT HOLD OPERATION (available only for SOP package) ABSOLUTE MAXIMUM RATINGS RECOMMENDED OPERATING CONDITIONS ELECTRICAL CHARACTERISTICS 1. DC Characteristics 2. AC Characteristics 3. Pin Capacitance TIMING DIAGRAM POWER ON/OFF SEQUENCE ReRAM CHARACTERISTICS ESD AND LATCH-UP MB85AS8MTPF (8-pin plastic SOP) REFLOW CONDITIONS AND FLOOR LIFE CURRENT STATUS ON CONTAINED RESTRICTED SUBSTANCES ORDERING INFORMATION PACKAGE DIMENSION MARKING (11-pin WLP) MARKING (8-pin SOP) PACKING FIGURE 1. Emboss carrier tape and package direction of storage 2. Reel EMBOSS CARRIER TAPE DRAWING
