AT28HC256F-90FM/883

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

The AT28HC256F-90FM/883 is a high performance 128K x 8 bit static, non-volatile memory which is designed to provide battery backed up RAM capability. It is part of the Atmel family of static RAMs. This device is designed to provide an interface between an external ROM/EPROM and microcontroller/microprocessor. It offers a wide range of features like easy programming, low power consumption, and compatibility with most logic families.

The AT28HC256F-90FM/883 belongs to the Memory category, which is a type of computer memory that is used to store information, such as words, numbers, pictures and sounds. Memory can be broadly classified into two main types: RAM and ROM. RAM is a type of volatile memory, which means that it will lose all stored information if it loses electric power. ROM, on the other hand, is a type of non-volatile memory, which means that it will retain information even after losing power. Memory can also be classified into several distinct categories, such as DRAM, SRAM, and Flash Memory.

The AT28HC256F-90FM/883 is an SRAM, which stands for Static Random Access Memory. SRAM is a type of random access memory that uses transistors to store information. It is commonly used as a RAM in many microcontrollers, as well as in small embedded systems. SRAM is known for its high speed and low power consumption. SRAM is non-volatile, meaning that it retains its contents even when there is no power.

The AT28HC256F-90FM/883 is built with the ‘FM’ architecture, which stands for polysilicon-gate CMOS technology. This type of memory is characterized by having a low standby power consumption and a fast access speed. It also has an operating voltage range of 2.4V to 5.5V with an extended temperature range from -40°C to +125°C. This makes it suitable for a variety of applications, from automotive to industrial, which require high performance and wide temperature range.

The AT28HC256F-90FM/883 incorporates a battery-backed-up RAM (BBRAM) feature, which enables it to retain data while the system is powered down. This feature is especially useful in automotive systems and in industrial control applications. It also features an on-chip voltage regulator, which enables operation down to 1.8V. Furthermore, the device contains a write controller and write protection circuitry which reduces pin count and improves overall system performance.

To understand the working principle of the AT28HC256F-90FM/883, it is important to understand how SRAM works in general. All SRAM chips have a row of address pins, which can be used to select a given row in the memory array. The selected row is then connected to either an output or an input line depending on whether the data is being read from or written to the chip. This allows for data to be read or written in the same number of clock cycles, which makes the device very fast.

The AT28HC256F-90FM/883 is typically used in automotive applications, such as engine control systems, industrial control systems, and other applications that require battery-backed up RAM capabilities. It is also used in consumer electronic devices that require low power consumption and high speed. The device can be easily programmed and is compatible with most logic families.

In conclusion, the AT28HC256F-90FM/883 is a high performance 128K x 8 bit static non-volatile memory ideal for applications such as automotive and industrial control systems, as well as consumer electronic devices. It features low power consumption and a wide temperature range, and is capable of providing battery-backed up RAM capabilities. The device is built with polysilicon-gate CMOS technology and its working principle is based on static RAM technology.

The specific data is subject to PDF, and the above content is for reference