Overview
The AT45DB642D-CNU is a 64-megabit, 2.7-volt dual-interface sequential access Flash memory produced by Adesto Technologies Corporation. This device is ideally suited for a wide variety of digital voice, image, program code, and data-storage applications. It supports both RapidS serial interface and Rapid8 8-bit interface, allowing for flexible connectivity to different types of microcontrollers and DSPs. The AT45DB642D-CNU operates from a single power supply of 2.7V to 3.6V and is optimized for commercial and industrial applications where high-density, low-pin count, low-voltage, and low-power are essential.
Key Specifications
| Parameter | Value |
|---|---|
| Memory Size | 64 megabits (8,192 pages of 1,024 or 1,056 bytes each) |
| Memory Interface | RapidS serial interface (SPI compatible up to 66 MHz) and Rapid8 8-bit interface |
| Operating Voltage | 2.7V to 3.6V |
| Temperature Range | Industrial: -40°C to +85°C |
| Package Options | 8-lead, 6 x 8 mm CASON, RoHS Compliant |
| Program/Erase Cycles | Minimum 100,000 cycles per page |
| Data Retention | 20 years |
| Security Features | 128-byte Security Register, 64-byte User Programmable Space, Unique 64-byte Device Identifier |
| SRAM Buffers | Two SRAM buffers of 1,024 or 1,056 bytes each |
Key Features
- Dual-interface support: RapidS serial interface (SPI compatible up to 66 MHz) and Rapid8 8-bit interface.
- High-density memory with low-pin count, reducing active pin count and facilitating hardware layout.
- Low-voltage operation: 2.7V to 3.6V for both program and read operations.
- Self-timed programming and erase cycles.
- EEPROM emulation with a self-contained three-step read-modify-write operation.
- Hardware and software data protection features, including individual sector lockdown and permanent sector lockdown for secure code and data storage.
- Green (Pb/Halide-free/RoHS Compliant) packaging options.
Applications
The AT45DB642D-CNU is optimized for use in various commercial and industrial applications, including:
- Digital voice and image storage.
- Program code storage.
- Data storage in embedded systems.
- Applications requiring high-density, low-power, and low-pin count memory solutions.
Q & A
- What is the memory size of the AT45DB642D-CNU?
The AT45DB642D-CNU has a memory size of 64 megabits, organized into 8,192 pages of 1,024 or 1,056 bytes each.
- What interfaces does the AT45DB642D-CNU support?
The device supports both RapidS serial interface (SPI compatible up to 66 MHz) and Rapid8 8-bit interface.
- What is the operating voltage range of the AT45DB642D-CNU?
The operating voltage range is 2.7V to 3.6V.
- What is the temperature range for the AT45DB642D-CNU?
The device operates within an industrial temperature range of -40°C to +85°C.
- What are the package options for the AT45DB642D-CNU?
The device is available in an 8-lead, 6 x 8 mm CASON package, which is RoHS Compliant.
- How many program/erase cycles can the AT45DB642D-CNU handle?
The device can handle a minimum of 100,000 program/erase cycles per page.
- What is the data retention period for the AT45DB642D-CNU?
The data retention period is 20 years.
- Does the AT45DB642D-CNU have any security features?
Yes, it includes a 128-byte Security Register, 64-byte User Programmable Space, and a Unique 64-byte Device Identifier.
- How does the AT45DB642D-CNU handle EEPROM emulation?
The device handles EEPROM emulation with a self-contained three-step read-modify-write operation.
- What are the benefits of the dual-interface and sequential access of the AT45DB642D-CNU?
The dual-interface and sequential access reduce active pin count, facilitate hardware layout, increase system reliability, minimize switching noise, and reduce package size.
