MR256DL08BMA45

MR256DL08BMA45 is a specific type of memory developed by STMicroelectronics. It is a 128-Mbit DDR SDRAM (Double Data Rate Synchronous Dynamic RAM) device specifically designed for the mass storage market. It is mainly used in consumer electronics such as digital set-top boxes and video game consoles.

The MR256DL08BMA45 uses a multi-chip package in which up to three DRAM devices are combined, each having a capacity of 64Mbits. This enables the user to select the desired memory capacity, with the three options being 256Mbits, 192Mbits and 128Mbits.

Features

The key features of the MR256DL08BMA45 are its low power consumption, high speed, low latency, small size and a wide range of operating temperatures.

• Low Power Consumption: The device uses a DDR2 DIMM voltage standard of 1.8V, allowing for reduced power requirements for operations.
• High Speed: It has anf i/o clock speed of 667 MHz.
• Low Latency: It has a latency of 2CAS cycles.
• Small Size: The MR256DL08BMA45 is small in size, measuring just 9×9.5mm.
• Wide Range of Operating Temperatures: It has an operating temperature range of -40°C to +85°C.

Applications

The MR256DL08BMA45 is used in a variety of applications, including but not limited to:

• Digital Set-top Boxes: This type of device requires high-capacity memory and the MR256DL08BMA45 provides an optimal solution.
• Video Game Consoles: Due to the high speed, low power and low latency requirements of today’s video game systems, this type of memory is the perfect choice.
• Embedded Systems: The small size and wide operating temperature range make it ideal for embedded systems.
• Networking Systems: The low latency and high speed are ideal for networking applications.

Working Principle

The MR256DL08BMA45 is made up of multiple DRAM devices, each containing multiple memory cells. These cells are addressed by a row and column address. During a read or write operation, the address is first decoded and all the cells in the row are read or written to.

The device is connected to a data bus which enables the data to be transferred between the memory and the rest of the system. The data bus is controlled by a number of signals from the device. These signals are to activate the row and column decoders, to read and write data, to change the row and column addresses and for refreshing the cells.

The device operates in synchronous mode, which means that it is clocked with an external clock. The external clock provides the timing for the various operations. The interface to the device is Compliance Interfaced, which ensures that the system is compatible with the memory device.