FRAM - 256 K (32K × 8) Bit FRAM with SPI interface

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MFG Part #:

MB85RS256APNF-G-JNERE1

Part #:
MB85RS256APNF-G-JNERE1
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Product Information

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The following product is no recommended for new designs. Please use this updated/replacement part: 
The Fujitsu MB85RS256A is a 256K Bit FRAM (Ferroelectric Random Access Memory) chip in a configuration of 32,768 words × 8 bits, using the ferroelectric process and silicon gate CMOS process technologies for forming the nonvolatile memory cells. MB85RS256A adopts the Serial Peripheral Interface (SPI). The MB85RS256A is able to retain data without using a back-up battery, as is needed for SRAM. The memory cells used in the MB85RS256A 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. MB85RS256A does not take long time to write data unlike Flash memories nor E2PROM, and MB85RS256A takes no wait time.

 

Features

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Bit configuration : 256K Bit 32768 words 8 bits
Operating power supply voltage : 3.0 V to 3.6 V
Operating frequency : 25 MHz (Max)
Serial Peripheral Interface (SPI) - Correspondent to SPI mode 0 (0,0) and mode 3 (1,1)
Operating temperature range : − 40 C to + 85 C
Data retention : 10 years ( + 55 C)
High endurance : 10 billion read/writes
Package : 8-pin plastic SOP (FPT-8P-M02)
Operating power supply current 5mA (Typ@25MHz)
- Standby current 9μA (Typ)
 

Specifications

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Operating Temp
-40 to +85 °C
Package Details
8-pin SOP
RAM Size
256 KBytes
VDD Max
3.6 MAX V
VDD Min
3.0 MIN V
 

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