MB85RS16NPN-G-AMEWE1

Memory IC Overview

The MB85RS16NPN-G-AMEWE1 is a 16 Kbit (2 K x 8) Ferroelectric Random Access Memory (FeRAM) integrated circuit manufactured by RAMXEED. It utilizes a Serial Peripheral Interface (SPI) compatible with Mode 0 and Mode 3, supporting a maximum operating frequency of 20 MHz. The device operates within a supply voltage range of 2.7 V to 3.6 V and functions across an ambient temperature range of -40°C to +95°C. It is housed in an 8-pin plastic Small Outline No-leads (SON) package.

Memory IC Feature Summary

• Nonvolatile memory architecture utilizing ferroelectric process technology for data retention without backup batteries.
• High endurance capability offering up to 10^12 read/write operations per byte at +85°C.
• Direct SPI interface compatibility allowing connection to microcontrollers equipped with standard SPI ports.
• Integrated status register with nonvolatile write protect bits and block protection features.

Memory IC Applications

• Industrial control systems requiring frequent parameter storage
• IoT terminals needing battery-free data logging
• Embedded devices demanding high-speed nonvolatile data recording

Memory IC Procurement Notes

Verify the specific ordering suffix AMEWE1 corresponds to the 8-pin SON package and embossed carrier tape shipping form. Confirm that the manufacturer designation RAMXEED aligns with current Fujitsu Semiconductor Memory Solutions Limited product lines. Ensure environmental compliance requirements match REACH and RoHS directives before finalizing procurement specifications.

Memory IC Selection Notes

Select this component when applications require high endurance exceeding Flash or EEPROM limits. The 20 MHz SPI interface supports fast data throughput without write wait times. Verify that the system power supply remains within the 2.7 V to 3.6 V range. Consider the 8-pin SON package dimensions for PCB layout constraints and thermal management requirements during operation.

Memory IC Part Context

This part belongs to the MB85RS16N series of FeRAM devices. RAMXEED Limited continues to offer and support existing products while maintaining original part numbers following its name change from Fujitsu Semiconductor Memory Solutions Limited. The series provides nonvolatile memory solutions designed for reliability and speed in embedded environments.

Memory IC Replacement Considerations

FM25L16B-G is listed as a similar substitute part number available from Infineon Technologies.

Memory IC FAQ

How does the HOLD pin function during serial communication?

The HOLD pin interrupts serial input/output without deselecting the chip. When held low, SO becomes High-Z and SCK/SI inputs are ignored until the pin returns high.

What is the mechanism for protecting the status register?

Writing to the status register is protected by the WPEN bit combined with the WP pin level. The WPEN bit itself is stored in nonvolatile memory.

Does the device support automatic address increment?

Yes, both READ and WRITE commands support automatic address increment if clock signals continue on the SCK pin before the CS signal rises.