AT45DB321D-TU

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NOR Flash memory with 32M storage capacity

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AT45DB321D-TU DataSheet

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AT45DB321D-TU Details

The AT45DB321D-TU is a high-speed, SPI-compatible flash memory from Adesto Technologies, offering 32 megabits of storage capacity. This reliable and robust memory device is suitable for data storage and program execution in various embedded systems. It features a serial interface for easy integration and provides a flexible storage solution for applications requiring non-volatile memory.

Pinout

  • 1 (CS): Chip Select
  • 2 (DI): Data Input
  • 3 (DO): Data Output
  • 4 (SCK): Serial Clock
  • 5 (RESET#): Reset
  • 6 (VCC): Positive Power Supply
  • 7 (GND): Ground

(Tip: For detailed pinout information, please refer to the corresponding datasheet.)

Key Features

  • High-Speed Operation: Offers fast read and write speeds for efficient data access.
  • SPI-Compatible Interface: Uses a standard SPI interface for easy communication with microcontrollers.
  • Extended Storage Capacity: Provides 32 megabits of non-volatile storage space.
  • Low Power Consumption: Designed for energy-efficient operation in battery-powered devices.
  • Flexible Sector Architecture: Supports flexible sector erase and program operations for data management.

Application

  • Embedded Systems: Ideal for storing program code and data in embedded systems.
  • Consumer Electronics: Used in consumer devices for data storage and firmware updates.
  • Industrial Automation: Suitable for industrial applications requiring non-volatile memory storage.

Where to Use

The AT45DB321D-TU is a versatile flash memory solution suitable for various applications, including embedded systems, consumer electronics, and industrial automation. It offers reliable data storage and program execution capabilities, making it a valuable component in electronic devices.

How to Use

Connect the AT45DB321D-TU to your microcontroller using the SPI interface pins for data communication. Ensure proper power supply connections to VCC and GND. Utilize the Chip Select (CS) pin to enable communication with the memory device. Refer to the datasheet for detailed instructions on writing and reading data from the flash memory.

Application Circuit

The application circuit for the AT45DB321D-TU demonstrates how to connect the flash memory to a microcontroller using the SPI interface. It includes connections for power, ground, data input/output, and the serial clock, ensuring correct interfacing and data transfer.

(Tip: For detailed circuit connections and operational guidelines, refer to the datasheet.)

Equivalents

  • MX25L3206E: A similar flash memory device with comparable features and performance.
  • SST25VF032B: An alternative flash memory solution offering equivalent storage capacity and functionality.

Complementary

The AT45DB321D-TU can be complemented by the AT25DF321A, which offers additional features such as sector protection and faster erase/write operations, suitable for advanced data storage applications.

When selecting complementary flash memory devices, ensure compatibility and consider specific application requirements for optimal performance.

Frequently Asked Questions

Q: What is the maximum read/write speed of the AT45DB321D-TU?

A: The AT45DB321D-TU offers high-speed operation with read and write speeds optimized for efficient data access. Refer to the datasheet for specific speed specifications under different conditions.

Q: Can the AT45DB321D-TU be used in battery-powered devices?

A: Yes, the AT45DB321D-TU features low power consumption, making it suitable for energy-efficient operation in battery-powered devices, extending battery life during data operations.

AT45DB321D-TU

Specifications

The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.

Product Category ! NOR Flash RoHS Details
Mounting Style SMD/SMT Package / Case TSOP-28
Series AT45DB321D Memory Size ! 32 Mbit
Supply Voltage - Min 2.7 V Supply Voltage - Max 3.6 V
Active Read Current - Max 15 mA Interface Type SPI
Maximum Clock Frequency 66 MHz Organization 4 M x 8
Data Bus Width 8 bit Timing Type Synchronous
Minimum Operating Temperature - 40 C Maximum Operating Temperature ! + 85 C
Architecture Chip Erase Brand Renesas / Dialog
Memory Type ! NOR Moisture Sensitive Yes
Product Type ! NOR Flash Speed 66 MHz
Standard Not Supported Factory Pack Quantity 234
Subcategory Memory & Data Storage Unit Weight 0.007055 oz

Datasheet PDF

Datasheets record the features, absolute maximum ratings, applications and more of the device, which benefit a lot as an overall guide to the specific application of the part.

Preliminary Specification AT45DB321D-TU PDF Download

FAQs

What is AT45DB321D-TU?

The AT45DB321D-TU is a 32-megabit (4-megabyte) serial interface Flash memory device designed by Adesto Technologies (formerly Atmel). It is ideal for applications requiring non-volatile data storage, such as consumer electronics, industrial control systems, and automotive applications.

How Does AT45DB321D-TU Work?

The AT45DB321D-TU works by storing data in non-volatile Flash memory cells, allowing for the retention of data even when power is removed. It features a serial interface for easy integration with microcontrollers and other digital systems. The device also supports in-system programming and sector erase operations.

How Many Pins does AT45DB321D-TU have and What are the Functions of the Pinout Configuration?

The AT45DB321D-TU is housed in an 8-lead SOIC (Small Outline Integrated Circuit) package. The pinout configuration includes:

  • CS: Chip select pin for device activation.
  • SI: Serial data input for communication with the device.
  • SO: Serial data output for communication with the device.
  • SCK: Serial clock input for synchronization of data transfer.
  • VCC: Power supply pin.
  • GND: Ground pin.

What are the Pros and Cons of AT45DB321D-TU?

Pros:

  • High Storage Capacity: Offers 32-megabit storage capacity for data-intensive applications.
  • Serial Interface: Provides easy integration with microcontrollers and digital systems.
  • Low Power Consumption: Operates with low power, suitable for battery-powered devices.
  • Non-volatile Storage: Retains data even when power is removed, ensuring data integrity.
  • In-System Programming: Allows for easy reprogramming of the device while in the system.

Cons:

  • Write Endurance: Limited endurance for write/erase cycles compared to some other memory technologies.
  • Read Latency: May have higher read latency compared to alternative memory types.

Are There Any Equivalents/Alternatives to AT45DB321D-TU for Recommendation?

  • The AT25DF321A from Adesto Technologies is a similar 32-megabit serial Flash device with additional features.
  • Alternatives to the AT45DB321D-TU include the W25Q32JV from Winbond and the M25P32 from Micron Technology.

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