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AT45DB641E-MHN2B-T

AT45DB641E-MHN2B-T

Renesas / Dialog
NOR Flash 64 Mbit, Wide Vcc (1.7V to 3.6V), -40C to 85C, 256 Byte Binary Page Mode, DFN 5x6 (Tape & Reel), Single SPI DataFlash
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Overview

The AT45DB641E-MHN2B-T is a 64 Mbit DataFlash memory featuring a flexible wide voltage range of 1.7V to 3.6V. It utilizes a page-oriented architecture with two internal SRAM buffers for simultaneous read and write operations, allowing for efficient data management in embedded systems. This specific variant is configured for binary page sizes of 256 bytes and is housed in a compact 5x6mm UDFN package.

Why Choose This Part

The part offers an Ultra-Deep Power-Down mode with a typical consumption of 0.3uA, making it ideal for energy-constrained designs. Its dual-SRAM buffer architecture enables continuous data throughput and the ability to perform 'Read-Modify-Write' operations with ease. Additionally, the wide operating voltage of 1.7V to 3.6V ensures compatibility with both legacy 3.3V systems and modern low-voltage logic.

Applications

Firmware and Program Code Storage
Storing bootloaders and application code for microcontrollers with fast 85MHz SPI access.
Data Logging
Recording sensor data using the dual-buffer architecture to minimize write latency and CPU overhead.
Digital Voice and Image Storage
Buffering and storing media files in battery-powered portable electronics where low power consumption is critical.

Key Specifications

Technology FLASH
Memory Size 64Mbit
Memory Type Non-Volatile
Memory Format FLASH
Mounting Type Surface Mount
Package / Case 8-UDFN Exposed Pad
Clock Frequency 85 MHz
Memory Interface SPI
Voltage - Supply 1.7V ~ 3.6V
Memory Organization 256 Bytes x 32K pages
Operating Temperature -40degC ~ 85degC (TC)
Supplier Device Package 8-UDFN (5x6)
Write Cycle Time - Word, Page 8us, 5ms

Getting Started

To interface with this device, use a standard SPI controller supporting Mode 0 or Mode 3. Engineers should utilize the built-in SRAM buffers to streamline page programming and minimize the impact of the 5ms page write cycle time. Logic level translation is not required if the host MCU operates within the supported 1.7V to 3.6V range.

Also Consider

W25Q64JVSSIQ Winbond - Offers a standard NOR Flash interface with higher clock speeds up to 133MHz for faster data transfer.
MX25L6433FM2I-08G Macronix - Provides a 64 Mbit SPI Flash alternative in an 8-SOP package for designs where UDFN footprinting is not required.
S25FL064LABNFI043 Infineon/Cypress - A high-performance 64 Mbit Flash option with advanced security features and robust data integrity.

Categories

Memory & Storage > NOR Flash