Overview
The AT45DB642D-CNU-SL954 is a 64-megabit, 2.7-volt dual-interface sequential access Flash memory produced by Adesto Technologies. This device is ideally suited for a wide variety of digital voice-, image-, program code-, and data-storage applications. It features a dual-interface architecture, supporting both RapidS serial interface and Rapid8 8-bit interface, allowing for flexible connectivity to different types of microcontrollers and DSPs.
Key Specifications
| Parameter | Value |
|---|---|
| Memory Size | 64 megabits (8,192 pages of 1,024/1,056 bytes each) |
| Supply Voltage | 2.7V to 3.6V |
| Interface | RapidS serial interface (SPI compatible up to 66 MHz), Rapid8 8-bit interface (up to 50 MHz) |
| SRAM Buffers | Two SRAM buffers of 1,024/1,056 bytes each |
| Erase Options | Page Erase (1 Kbyte), Block Erase (8 Kbytes), Sector Erase (256 Kbytes), Chip Erase (64 Mbits) |
| Power Consumption | 10 mA Active Read Current (typical), 25 µA Standby Current (typical), 15 µA Deep Power Down (typical) |
| Data Retention | 20 years |
| Temperature Range | Industrial: -40°C to +85°C |
| Package | 8-lead, 6 x 8 mm CASON |
| Program/Erase Cycles | 100,000 cycles per page minimum |
Key Features
- Dual-interface architecture supporting RapidS serial interface and Rapid8 8-bit interface.
- User configurable page size: 1024 bytes or 1056 bytes per page.
- Two SRAM data buffers allowing for continuous data stream writing 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 standby and deep power down modes.
- EEPROM emulation with a self-contained three-step read-modify-write operation.
- JEDEC standard manufacturer and device ID read.
- Green (Pb/Halide-free/RoHS compliant) packaging options.
Applications
- Digital voice storage and playback.
- Image storage and retrieval.
- Program code storage for embedded systems.
- Data storage for various industrial and consumer electronics.
- Code shadowing applications due to continuous read capability through the entire array.
Q & A
- What is the memory size of the AT45DB642D-CNU-SL954?
The memory size is 64 megabits, organized as 8,192 pages of 1,024 or 1,056 bytes each.
- What are the supported interfaces for the AT45DB642D-CNU-SL954?
The device supports RapidS serial interface (SPI compatible up to 66 MHz) and Rapid8 8-bit interface (up to 50 MHz).
- What are the power consumption characteristics of the AT45DB642D-CNU-SL954?
The device has a typical active read current of 10 mA, standby current of 25 µA, and deep power down current of 15 µA.
- How many program/erase cycles does the AT45DB642D-CNU-SL954 support per page?
The device supports a minimum of 100,000 program/erase cycles per page.
- What is the data retention period for the AT45DB642D-CNU-SL954?
The data retention period is 20 years.
- What are the temperature range and packaging options for the AT45DB642D-CNU-SL954?
The device operates in an industrial temperature range of -40°C to +85°C and is available in an 8-lead, 6 x 8 mm CASON package.
- Does the AT45DB642D-CNU-SL954 support EEPROM emulation?
Yes, it supports EEPROM emulation with a self-contained three-step read-modify-write operation.
- What security features are available on the AT45DB642D-CNU-SL954?
The device includes hardware and software data protection features such as individual sector lockdown, a 128-byte security register, and a 64-byte user programmable space.
- Can the page size of the AT45DB642D-CNU-SL954 be configured by the user?
Yes, the page size can be configured to either 1024 bytes or 1056 bytes per page.
- What is the purpose of the two SRAM buffers in the AT45DB642D-CNU-SL954?
The two SRAM buffers allow for receiving data while a page in the main memory is being reprogrammed and for writing a continuous data stream.
