Series:	--
Packaging:	Tube
Part Status:	Obsolete
Memory Type:	Non-Volatile
Memory Format:	NVSRAM
Technology:	NVSRAM (Non-Volatile SRAM)
Memory Size:	256Kb (32K x 8)
Write Cycle Time - Word, Page:	150ns
Access Time:	150ns
Memory Interface:	Parallel
Voltage - Supply:	4.75 V ~ 5.25 V
Operating Temperature:	0°C ~ 70°C (TA)
Mounting Type:	Through Hole
Package / Case:	28-DIP Module (0.600", 15.24mm)
Supplier Device Package:	28-EDIP
Base Part Number:	DS1230AB

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Memory - DS1230AB-150 Application Field and Working Principle

The DS1230AB-150 is a non-volatile, batteryless, write-protected CMOS static RAM device in a 28-pin package. It is designed for memory applications where the backup of data during power interruption is important. This document provides an overview of the features, applications, and working principle of the part.

Features of the DS1230AB-150

The DS1230AB-150 is a 2Kb CMOS static RAM that operates with a single 3V power supply. The device is available in two variants: the AB-150-02, which is secured with a write protection pin, and the AB-150-03, which is secured by a write protect pin and a self-address protect pin. Other features of the part include:• High Speed CMOS technology • Low power consumption (active mode <100µA @3V) • Automatic power-up clear (APUC) • Circuitry to prevent data corruption• TTL-level inputs and outputs for compatibility with standard TTL devices • Pin compatible with NMOS 64Kx1 devices

Applications of the DS1230AB-150

The DS1230AB-150 is most commonly used in volatile applications that are susceptible to power interruption, such as network nodes, medical devices, automation controls, point-of-sale systems, and game consoles. Its low power consumption and robust features make it well suited for these applications. It can also be used in non-volatile applications where the data needs to be retained even if the power supply is interrupted, such as in data logging systems, instrumentation systems, and programmable logic controllers. In addition, the part is available in a Surface Mount Technology (SMT) package, making it suitable for use in high-density applications, such as high-speed automated data processing systems, telecommunications systems, and advanced industrial controls.

Working Principle of the DS1230AB-150

The DS1230AB-150 is a bi-directional addressable CMOS static RAM that has a write protection pin (WP) and/or a self-address protect pin (SAP). The device is designed to read and write data from memory cells through an address bus. The WP pin, when set low, disables all write operations to the device, protecting against unintentional overwrites. The SAP pin ensures that the memory addresses are only written sequentially, avoiding any write conflicts. The DS1230AB-150 is designed to be powered by a single 3V power supply and is equipped with a built-in voltage monitor circuit and timer. This monitor circuit automatically initiates an APUC when the power supply drops below 3.2V resulting in data preservation. For improved system reliability, the part also provides an Intelligent Burn-in mode, where a special algorithm monitors the performance of the device and provides a report at the end of the burn-in period. The device also includes write protection and self-address protection features and functions to maintain data integrity.

Conclusion

The DS1230AB-150 is a low-power CMOS static RAM device that is designed for applications that need to protect data during power interruption. It features a write protection pin and a self-address protect pin, a special algorithm for Intelligent Burn-in mode, and is available in two variants, including a Surface Mount Package. This part is a reliable and robust solution for volatile and non-volatile applications such as data logging systems, instrumentation systems, automation controls, and point-of-sale systems.

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