AS7C256A-10JCN

Series:	--
Packaging:	Tube
Part Status:	Active
Memory Type:	Volatile
Memory Format:	SRAM
Technology:	SRAM - Asynchronous
Memory Size:	256Kb (32K x 8)
Write Cycle Time - Word, Page:	10ns
Access Time:	10ns
Memory Interface:	Parallel
Voltage - Supply:	4.5 V ~ 5.5 V
Operating Temperature:	0°C ~ 70°C (TA)
Mounting Type:	Surface Mount
Package / Case:	28-BSOJ (0.300", 7.62mm Width)
Supplier Device Package:	28-SOJ

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Introduction

AS7C256A-10JCN is a 256K-word x 10-bit Static RAM device, with an access time of 12ns. It is built using high performance CMOS technology with low power consumption and is part of the Asahi Kasei family of integrated circuits. It is an ideal memory for narrow-bus applications, providing high speed, compactness and low power consumption.

Application Field

The AS7C256A-10JCN is commonly used as an embedded static RAM (SRAM) in numerous applications. Some of the most common applications are embedded computing and automotive. In embedded computing, AS7C256A-10JCN is a common candidate for memory systems in implementation of field programmable gate array (FPGA) and digital signal processor (DSP) based control systems. Its high speed, low power consumption and proven reliability make it an ideal choice for embedded systems.In the automotive industry, AS7C256A-10JCN can be used for storing various automotive data, such as driver assistance information, engine control information and navigation data, as well as audio and video applications. Additionally, with its extended temperature range and high speed operation, AS7C256A-10JCN is suitable for applications related to engine control and navigation systems. Other applications that utilize AS7C256A-10JCN include medical systems, wireless communication and consumer applications.

Working Principle

The working principle of the AS7C256A-10JCN static RAM is based on the existence of two separate types of transistors; those used to store a 0 bit and those used to store a 1 bit. When a 0 bit is written to the memory, one of the cell transistors is switched on and the other is switched off. When a 1 bit is written to the memory, the opposite transistors are switched on and off. When the AS7C256A-10JCN is actively accessed, it is actuated by a set of specific commands programmed into the chip, known as an address. This address is a unique sequence of address lines that are used to identify the location of the data in the memory. Once the address is entered, the data can be written and read from the memory. When the AS7C256A-10JCN is powered-off, it can maintain the stored data for a long period of time without power, thanks to its static operation. Whenever the device is powered-on again, the data stored in it remains intact.

Conclusion

The AS7C256A-10JCN is a Static RAM device designed for high performance applications with a wide range of temperature and power requirements. It is suitable for a variety of embedded systems and applications, such as automotive, medical, wireless communication and consumer electronics. Its working principle is based on two types of transistors that are switched on and off depending on the data stored in the memory. No voltage is required in order to maintain data when the device is powered off, making it an ideal choice for applications requiring long operational periods without power.

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