Description

The AT45DB161B is a 2.5-volt or 2.7-volt only, serial interface Flash memory ideally suited for a wide variety of digital voice-, image-, program code- and data-storage applications. Its 17,301,504 bits of memory are organized as 4096 pages of 528 bytes each. In addition to the main memory, the AT45DB161B also contains two SRAM data buffers of 528 bytes each. The buffers allow receiving of data while a page in the main memory is being reprogrammed, as well as writing a continuous data stream.

Specifications and features

• Single 2.5V - 3.6V or 2.7V - 3.6V Supply
• Serial Peripheral Interface (SPI) Compatible
• 20 MHz Max Clock Frequency
• Page Program Operation
– Single Cycle Reprogram (Erase and Program)
– 4096 Pages (528 Bytes/Page) Main Memory
• Supports Page and Block Erase Operations
• Two 528-byte SRAM Data Buffers – Allows Receiving of Data while Reprogramming of Nonvolatile Memory
• Continuous Read Capability through Entire Array
– Ideal for Code Shadowing Applications
• Low Power Dissipation
– 4 mA Active Read Current Typical
– 2 µA CMOS Standby Current Typical
• Hardware Data Protection Feature
• 100% Compatible to AT45DB161
• 5.0V-tolerant Inputs: SI, SCK, CS, RESET and WP Pins
• Commercial and Industrial Temperature Ranges
• Green (Pb/Halide-free) Packaging Options

Application Scenarios

The AT45DB161B is suitable for a wide range of digital storage applications such as digital voice recording, image storage, program code storage, and data storage.

Comparison

Advantages:

• 2.5V or 2.7V supply voltage
• Serial Peripheral Interface (SPI) Compatible
• 20 MHz Max Clock Frequency
• 4096 Pages Main Memory
• Supports Page and Block Erase Operations
• Two 528-byte SRAM Data Buffers
• Continuous Read Capability through Entire Array
• Low Power Dissipation
• Hardware Data Protection Feature
• Completely compatible with AT45DB161
• 5.0V-tolerant Inputs: SI, SCK, CS, RESET and WP Pins
• Commercial and Industrial Temperature Ranges
• Green (Pb/Halide-free) Packaging Options

Disadvantages:

• None identified