Overview
The AT45DB321D-SU-SL954, produced by Adesto Technologies, is a 32-megabit serial interface, sequential access flash memory. This device is ideally suited for a wide variety of digital voice, image, program code, and data-storage applications. It operates on a single 2.5V to 3.6V or 2.7V to 3.6V supply and supports the Atmel RapidS serial interface, which is SPI compatible up to 66MHz. The memory is organized into 8,192 pages, each with a configurable size of 512 or 528 bytes.
Key Specifications
| Parameter | Value |
|---|---|
| Supply Voltage | 2.5V to 3.6V or 2.7V to 3.6V |
| Interface Type | SPI, RapidS |
| Maximum Clock Frequency | 66MHz |
| Memory Size | 32Mb (8,192 pages of 512/528 bytes each) |
| Page Size | Configurable: 512 bytes or 528 bytes |
| Erase Options | Page erase (512 bytes), Block erase (4KB), Sector erase (64KB), Chip erase (32Mb) |
| SRAM Data Buffers | Two SRAM buffers of 512/528 bytes each |
| Active Read Current | Typical 7mA |
| Standby Current | Typical 25µA |
| Deep Power Down Current | Typical 15µA |
| Operating Temperature | -40°C to +85°C |
| Package Options | 8-pad MLF VDFN, 8-lead wide SOIC, 28-lead TSOP, etc. |
| Data Retention | 20 years |
| Program/Erase Cycles | Minimum 100,000 cycles per page |
Key Features
- Supports Atmel RapidS serial interface and SPI compatible modes 0 and 3 up to 66MHz.
- User configurable page size (512 bytes or 528 bytes).
- Two SRAM data buffers allowing for continuous read capability and receiving data while reprogramming the flash array.
- Flexible erase options: page, block, sector, and chip erase.
- Hardware and software data protection features including individual sector lockdown and a 128-byte security register.
- Low power dissipation with typical active read current of 7mA and standby current of 25µA.
- Industrial temperature range (-40°C to +85°C) and green Pb/halide-free/RoHS compliant packaging options.
Applications
The AT45DB321D-SU-SL954 is suitable for various applications including:
- Digital voice and image storage.
- Program code storage.
- Data storage in industrial and consumer electronics.
- Code shadowing applications.
- Secure code and data storage due to sector lockdown and security register features.
Q & A
- What is the operating voltage range of the AT45DB321D-SU-SL954?
The operating voltage range is 2.5V to 3.6V or 2.7V to 3.6V.
- What is the maximum clock frequency supported by the AT45DB321D-SU-SL954?
The maximum clock frequency is 66MHz.
- How is the memory organized in the AT45DB321D-SU-SL954?
The memory is organized into 8,192 pages, each with a configurable size of 512 or 528 bytes.
- What are the erase options available for the AT45DB321D-SU-SL954?
Erase options include page erase (512 bytes), block erase (4KB), sector erase (64KB), and chip erase (32Mb).
- Does the AT45DB321D-SU-SL954 support continuous read capability?
Yes, it supports continuous read capability through the entire array using two SRAM data buffers.
- What are the typical current consumption values for the AT45DB321D-SU-SL954?
Typical active read current is 7mA, standby current is 25µA, and deep power down current is 15µA.
- What is the data retention period for the AT45DB321D-SU-SL954?
The data retention period is 20 years.
- How many program/erase cycles does the AT45DB321D-SU-SL954 support per page?
It supports a minimum of 100,000 program/erase cycles per page.
- Is the AT45DB321D-SU-SL954 RoHS compliant?
Yes, it is green Pb/halide-free/RoHS compliant.
- What are the security features of the AT45DB321D-SU-SL954?
It includes hardware and software data protection features such as individual sector lockdown and a 128-byte security register.
