AT45DB321D-TU The Microchip Technology AT45DB321D-TU is a 32Mbit serial access flash memory. It features an SPI compatible interface with a maximum clock frequency of 66MHz and operates from a 2.7V to 3.6V supply.
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AT45DB321D-TU

Available from 1 distributors
Mfr Name: Microchip Technology
Microchip Technology
The Microchip Technology AT45DB321D-TU is a 32Mbit serial access flash memory. It features an SPI compatible interface with a maximum clock frequency of 66MHz and operates from a 2.7V to 3.6V supply.
✓ Total Stock: 2 pcs
$ Price Range: $1.28

AT45DB321D-TU Available from 1 distributor

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AT45DB321D-TU Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Clock Frequency
Memory Format
Memory Interface
Memory Organization
Memory Size
Memory Type
Mounting Type
Operating Temperature
Supplier Device Package
Technology
Voltage
Write Cycle Time

AT45DB321D-TU Description

Short technical summary and product information.

The AT45DB321D-TU from Microchip Technology is a 32Mbit serial interface flash memory designed for various digital storage applications. It utilizes the Atmel RapidS serial interface, which is SPI compatible, supporting clock frequencies up to 66MHz. The memory is organized into 8,192 pages, each with 512 or 528 bytes, and includes two SRAM data buffers for efficient data handling during reprogramming.

 

This flash memory operates within a supply voltage range of 2.7V to 3.6V and an industrial temperature range of -40°C to 85°C. Key electrical characteristics include a typical active read current of 7mA, a typical standby current of 25µA, and a deep power-down current of 15µA. It offers hardware and software data protection features, including sector lockdown and a 128-byte security register.

 

The AT45DB321D-TU is supplied in a 28-TSOP package suitable for surface mounting. It boasts a minimum of 100,000 program/erase cycles per page and a data retention of 20 years at 25°C. Its design is optimized for applications requiring high density, low pin count, low voltage, and low power consumption, making it ideal for code shadowing and data storage in commercial and industrial environments.

AT45DB321D-TU Quick Information

Product Type: Serial Flash Memory
Canonical Name: AT45DB321D-TU Serial Flash Memory
Subcategory: Serial Access Flash

AT45DB321D-TU Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

AT45DB321D-TU Estimated Pricing

Qty Low High
1+ $1.28 $1.28

Estimated market price range - modelled values for guidance only, not live distributor offers.

AT45DB321D-TU Features

  • 32Mbit serial access flash memory.
  • SPI compatible interface up to 66MHz.
  • Operates from 2.7V to 3.6V supply.
  • Industrial temperature range: -40°C to 85°C.
  • Packaged in a 28-TSOP for surface mounting.

AT45DB321D-TU Applications

  • Used in embedded systems for code storage.
  • Ideal for data logging applications.
  • Suitable for industrial control modules.
  • Applicable in networking equipment firmware.
  • Used in consumer electronics for firmware storage.

AT45DB321D-TU FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating voltage range of the AT45DB321D-TU?

The AT45DB321D-TU operates from either 2.5V to 3.6V or 2.7V to 3.6V.

What is the operating temperature range?

-40°C to 85°C.

What is the package type for the AT45DB321D-TU?

28-TSOP (0.465", 11.80mm Width) surface mount package.

What is the memory size of the AT45DB321D-TU?

32 Mbit (4 MB).

What is the maximum clock frequency?

66 MHz.

What is the program/erase endurance?

100,000 cycles per page minimum.

What is the data retention of the AT45DB321D-TU?

20 years at 25°C.

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