HomedatasheetAT45DB642D-TU

AT45DB642D-TU Datasheet

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Description

The AT45DB642D-TU is a 2.7-volt, dual-interface sequential access Flash memory ideally suited for a wide variety of digital voice-, image-, program code- and data-storage applications. The AT45DB642D-TU supports RapidS serial interface and Rapid8 8-bit interface. RapidS serial interface is SPI compatible for frequencies up to 66 MHz. The dual-interface allows a dedicated serial interface to be connected to a DSP and a dedicated 8-bit interface to be connected to a microcontroller or vice versa. However, the use of either interface is purely optional. Its 69,206,016 bits of memory are organized as 8,192 pages of 1,024 bytes (binary page size) or 1,056 bytes (standard DataFlash page size) each. In addition to the main memory, the AT45DB642D-TU also contains two SRAM buffers of 1,024 (binary buffer size) bytes/1,056 bytes (standard DataFlash buffer size) 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. EEPROM emulation (bit or byte alterability) is easily handled with a self-contained three step read-modifywrite operation. Unlike conventional Flash memories that are accessed randomly with multiple address lines and a parallel interface, the DataFlash uses either a RapidS serial interface or a 8-bit Rapid8 interface to sequentially access its data. The simple sequential access dramatically reduces active pin count, facilitates hardware layout, increases system reliability, minimizes switching noise, and reduces package size. The device is optimized for use in many commercial and industrial applications where high-density, low-pin count, low-voltage and low-power are essential. AT45DB642D-TU Features • Single 2.7V - 3.6V Supply• Dual-interface Architecture – RapidS Serial Interface: 66 MHz Maximum Clock Frequency SPI Compatible Modes 0 and 3 – Rapid8 8-bit Interface: 50 MHz Maximum Clock Frequency• User Configurable Page Size – 1024 Bytes per Page – 1056 Bytes per Page – Page Size Can Be Factory Pre-configured for 1024 Bytes• Page Program Operation – Intelligent Programming Operation – 8192 Pages (1024/1056 Bytes/Page) Main Memory
Features

Parameters

[{"Name":"Data Bus Width","Value":"8 bit "},{"Name":"Memory Size","Value":"1056 K "},{"Name":"Architecture","Value":"Sectored "},{"Name":"Interface Type","Value":"SPI "},{"Name":"Supply Voltage - Max","Value":"3.6 V "},{"Name":"Supply Voltage - Min","Value":"2.7 V "},{"Name":"Maximum Operating Current","Value":"15 mA "},{"Name":"Operating Temperature","Value":"+ 85 C"},{"Name":"Mounting Style","Value":"SMD/SMT "},{"Name":"Package / Case","Value":"TSOP-28 "}]

Manufacturer information

ON SEMICONDUCTOR

ON Semiconductor - ON Semiconductor (Nasdaq: ON) is driving energy efficient innovations, empowering customers to reduce global energy use. The company offers a comprehensive portfolio of energy efficient power and signal management, logic, discrete and custom solutions to help design engineers solve their unique design challenges in automotive, communications, computing, consumer, industrial, LED lighting, medical, military/aerospace and power supply applications. ON Semiconductor operates a responsive, reliable, world-class supply chain and quality program, and a network of manufacturing facilities, sales offices and design centers in key markets throughout North America, Europe, and the Asia Pacific regions.

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