Overview
The AT45DB321D-SU, manufactured by Adesto Technologies (formerly Atmel), is a 2.5V or 2.7V 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 supports the Atmel RapidS serial interface, which is SPI compatible for frequencies up to 66MHz, making it suitable for high-speed operations.
Key Specifications
| Parameter | Value |
|---|---|
| Memory Size | 32Mb (528 bytes x 8192 pages) |
| Memory Interface | SPI |
| Clock Frequency | Up to 66MHz |
| Page Size | 512 bytes or 528 bytes |
| Erase Options | Page (512 bytes), Block (4KB), Sector (64KB), Chip (32Mb) |
| SRAM Buffers | Two SRAM buffers of 512/528 bytes each |
| Voltage Supply | 2.7V to 3.6V |
| Operating Temperature | -40°C to +85°C |
| Package Type | 8-SOIC (0.209", 5.30mm Width) |
| Program/Erase Cycles | 100,000 cycles per page minimum |
| Data Retention | 20 years |
| Power Consumption | 7mA active read current, 25µA standby current, 15µA deep power down |
Key Features
- RapidS Serial Interface: SPI compatible for frequencies up to 66MHz, ideal for high-speed operations.
- Flexible Memory Architecture: Memory array divided into sectors, blocks, and pages for optimal flexibility.
- SRAM Buffers: Two SRAM buffers of 512/528 bytes each, allowing data reception while reprogramming the flash array and continuous data stream writing.
- Low Power Dissipation: Low active read current, standby current, and deep power down current.
- Security Features: Individual sector lockdown, 128-byte security register, 64-byte user programmable space, and unique 64-byte device identifier.
- Code Shadowing: Ideal for code shadowing applications due to its sequential access and continuous read capability.
- Green Packaging: Pb/halide-free/RoHS compliant packaging options.
Applications
The AT45DB321D-SU is suitable for a wide range of applications, including:
- Digital voice storage
- Image storage
- Program code storage
- Data storage
- Code shadowing applications
- Commercial and industrial applications where high-density, low-pin count, low-voltage, and low-power are essential.
Q & A
- What is the memory size of the AT45DB321D-SU?
The memory size is 32Mb, organized as 8,192 pages of 512 bytes or 528 bytes each.
- What is the maximum clock frequency of the RapidS serial interface?
The maximum clock frequency is 66MHz.
- What are the erase options available for the AT45DB321D-SU?
Erase operations can be performed at the chip, sector, block, or page level.
- How many SRAM buffers does the AT45DB321D-SU have, and what is their size?
The device has two SRAM buffers, each of 512/528 bytes.
- What is the operating voltage range of the AT45DB321D-SU?
The operating voltage range is 2.7V to 3.6V.
- What is the operating temperature range of the AT45DB321D-SU?
The operating temperature range is -40°C to +85°C.
- What are the power consumption characteristics of the AT45DB321D-SU?
The device has a typical active read current of 7mA, standby current of 25µA, and deep power down current of 15µA.
- Does the AT45DB321D-SU have any security features?
Yes, it includes individual sector lockdown, a 128-byte security register, 64-byte user programmable space, and a unique 64-byte device identifier.
- What is the data retention period of the AT45DB321D-SU?
The data retention period is 20 years.
- Is the AT45DB321D-SU RoHS compliant?
Yes, the device is Pb/halide-free and RoHS compliant.
