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DS1222 from DALLAS,MAXIM - Dallas Semiconductor

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DS1222

Manufacturer: DALLAS

BankSwitch Chip

Partnumber Manufacturer Quantity Availability
DS1222 DALLAS 73 In Stock

Description and Introduction

BankSwitch Chip The DS1222 is a nonvolatile static RAM (NV SRAM) manufactured by Dallas Semiconductor (now part of Maxim Integrated). Here are its key specifications:

- **Memory Size**: 2Kb (256 x 8-bit)  
- **Technology**: Combines SRAM with an embedded lithium energy source and control circuitry for nonvolatile operation.  
- **Data Retention**: Minimum 10 years without power.  
- **Access Time**: 150 ns (max).  
- **Operating Voltage**: 4.5V to 5.5V.  
- **Package**: 24-pin DIP (Dual In-line Package).  
- **Operating Temperature Range**: 0°C to 70°C (commercial).  
- **Write Cycles**: Unlimited (like standard SRAM).  
- **Pin Compatibility**: Directly replaces 2Kb EPROMs or EEPROMs with no circuit modifications.  

The DS1222 ensures data preservation during power loss by automatically switching to the internal battery.

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