Description
The AT45D041 is a 5-volt only, serial interface Flash memory suitable for in-system reprogramming. Its 4,325,376 bits of memory are organized as 2048 pages of 264-bytes each. In addition to the main memory, the AT45D041 also contains two data buffers of 264-bytes each. The buffers allow receiving of data while a page in the main memory is being reprogrammed. Unlike conventional Flash memories that are accessed randomly with multiple address lines and a parallel interface, the DataFlash uses a serial interface to sequentially access its data. The simple serial interface facilitates hardware layout, increases system reliability, minimizes switching noise, and reduces package size and active pin count.

Features
• Single 4.5V - 5.5V Supply
• Serial Interface Architecture
• Page Program Operation
   - Single Cycle Reprogram (Erase and Program)
   - 2048 Pages (264 Bytes/Page) Main Memory
• Two 264-Byte Data Buffers - Allows Receiving of Data while Reprogramming of
   Non-Volatile Memory
• Internal Program and Control Timer
• Fast Page Program Time - 7 ms Typical
• 80 µs Typical Page to Buffer Transfer Time
• Low Power Dissipation
   - 15 mA Active Read Current Typical
   - 20 µA CMOS Standby Current Typical
• 10 MHz Max Clock Frequency
• Hardware Data Protection Feature
• Serial Peripheral Interface (SPI) Compatible – Modes 0 and 3
• CMOS and TTL Compatible Inputs and Outputs
• Commercial and Industrial Temperature Ranges