71V2556S133PFG8

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The 71V2556S133PFG8 memory is a high-speed, low-power 64Mx8 synchronous dual-port RAM and is mainly used for the devices that require low power, high input and output frequency, various devices data buffering and other related operations. It is equipped with error correction and detection devices, which can help reduce the bit error rate of the system and greatly improve the reliability of device operation. Because of its low power consumption, it can significantly reduce the total power consumption of the system.

Application Field

71V2556S133PFG8 memory is mainly used in the field of data buffering, storage, and transmission. Specifically, it can be applied to those below:

• Byte and word data buffering.
• Cache buffering.
• Large-capacity hard disk buffering.
• Data exchange and process between digital camera and PC host.
• Data exchange and process between set-top box and demodulator.
• Network and communication systems for exchange, process and buffering.
• Computer peripherals, such as home gateways and digital entertainment terminals.
• DDR3 buffer.
• Gigabit Ethernet receiver and transmitter buffers.

Working Principle

71V2556S133PFG8 memory uses dual-port architecture to achieve synchronous operation. It contains two independent byte-wide input/output registers that can fully use the resources of each port as long as they are operated at the same clock speed. By using variable clocks and asynchronous burst transfers, the device can achieve high speed and low latency between ports. Moreover, by using independent write and read clocks, each device can achieve high operating frequency and improve system performance.

71V2556S133PFG8 integrates error correction and detection logic for each port. The system can detect and correct single-bit errors in an 8-bit data field. When an error occurs, an "error signal" bit is output to the system through an inspection signal. The ECC signal is also used to detect multiple-bit error, or indicate that a one-bit error has occurred and has been corrected. This effectively improves the reliability and accuracy of the system.

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