DS1249AB-85

Series:	--
Packaging:	Tube
Part Status:	Obsolete
Memory Type:	Non-Volatile
Memory Format:	NVSRAM
Technology:	NVSRAM (Non-Volatile SRAM)
Memory Size:	2Mb (256K x 8)
Write Cycle Time - Word, Page:	85ns
Access Time:	85ns
Memory Interface:	Parallel
Voltage - Supply:	4.75 V ~ 5.25 V
Operating Temperature:	0°C ~ 70°C (TA)
Mounting Type:	Through Hole
Package / Case:	32-DIP Module (0.600", 15.24mm)
Supplier Device Package:	32-EDIP
Base Part Number:	DS1249AB

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Introduction to DS1249AB-85 Memory

DS1249AB-85 is a type of memory chip designed and manufactured by Dallas Semiconductor. It is a non-volatile memory chip, meaning it can retain data even without power. It\'s an 8 pin, 500 kbits CMOS non-volatile memory chip. It is of 4x 128 bits in size and operates at a supply voltage of 5.0V.

Application Fields and Working Principle of DS1249AB-85

DS1249AB-85 memory chip is primarily used for data storage in various applications. These include embedded systems, automotive, medical, industrial and networking applications where data storage is necessary for long durations with minimal power consumption.The working principle of DS1249AB-85 involves the use of a CMOS memory cell. This memory cell consists of p-type and n-type transistors, a capacitor and an electrode. When power is applied, the voltage across the capacitor changes. This stored voltage represents the stored data. When power is removed, the stored voltage will remain, thus preserving the data.The chip also contains a built-in read/write controller that enables the chip to communicate with a microprocessor, allowing data to be written to or read from the chip. Data is written to the chip using a serial interface. The data is split into 3-bit words, and the write controller writes them to the memory cells in a sequence. When the data is read, it is retrieved from the memory cells and read out the same way.

Advantages

The use of a non-volatile memory chip such as the DS1249AB-85 offers a number of advantages over alternative memory solutions. The most notable of these benefits include reliable data storage, low power consumption, and ease of implementation.As mentioned, the chip is able to retain data even when power is removed, meaning it can provide long-term data storage with no need for power supply. This makes it ideal for embedded systems and for applications where power is difficult to provide or unreliable.The chip also consumes minimal power, making it suitable for applications where power conservation is important, such as in medical and automotive applications.Finally, the DS1249AB-85 memory chip is easy to integrate into existing systems and applications. With its simple interface and built-in controller, the chip can be quickly and easily implemented.

Conclusion

DS1249AB-85 is a non-volatile memory chip produced by Dallas Semiconductor. It is used primarily in embedded systems, automotive, medical, industrial and networking applications where data must be stored for long duration with minimal power consumption. The chip operates by using a CMOS memory cell with a built-in read/write controller. Advantages of the chip include reliable data storage, low power consumption, and ease of implementation.

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