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M48Z58-70PC1 from STM,ST Microelectronics

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M48Z58-70PC1

Manufacturer: STM, DALLAS, ST

64 Kbit (8Kb X 8) ZEROPOWER SRAM

Partnumber Manufacturer Quantity Availability
M48Z58-70PC1,M48Z5870PC1 STM, DALLAS, ST 1346 In Stock

Description and Introduction

64 Kbit (8Kb X 8) ZEROPOWER SRAM The **M48Z58-70PC1** is a non-volatile SRAM (NVSRAM) manufactured by **DALLAS SEMICONDUCTOR (now part of Maxim Integrated)**. Below are its key specifications, descriptions, and features:

### **Specifications:**  
- **Memory Type:** Non-Volatile SRAM (NVSRAM)  
- **Density:** 64Kb (8K x 8)  
- **Access Time:** 70ns  
- **Supply Voltage:** 5V ±10%  
- **Operating Temperature Range:** 0°C to 70°C  
- **Package:** 28-pin PDIP (Plastic Dual In-line Package)  
- **Data Retention:** 10 years minimum (without power)  
- **Write Cycle Endurance:** Unlimited (SRAM), 1 million cycles (EEPROM backup)  

### **Descriptions:**  
- Combines **SRAM speed** with **non-volatile EEPROM backup**.  
- Automatically saves data to EEPROM on power loss and restores it when power returns.  
- No external battery required for data retention.  
- Ideal for applications requiring fast write speeds and non-volatility.  

### **Features:**  
- **Integrated EEPROM backup** for data retention.  
- **Self-timed write cycle** for EEPROM storage.  
- **Low-power CMOS technology**.  
- **Direct SRAM replacement** with no software changes needed.  
- **Automatic store on power-down** and recall on power-up.  
- **Industrial-grade reliability**.  

This NVSRAM is commonly used in **industrial control systems, networking equipment, medical devices, and embedded systems** where fast access and non-volatility are critical.  

(Note: DALLAS SEMICONDUCTOR was acquired by Maxim Integrated, which is now part of Analog Devices.)

Application Scenarios & Design Considerations

64 Kbit (8Kb X 8) ZEROPOWER SRAM

Alternative Part Number

  • DS1225AD-70+ --: Nonvolatile SRAM module with 8Kx8 organization and 70ns access time, functionally equivalent to the M48Z58 and widely used as a drop-in replacement in battery-backed SRAM sockets.
  • BQ4011YMA-70 --: Battery-backed nonvolatile SRAM in the same 8Kx8 density with 70ns speed, offering comparable pinout and timing for legacy designs.
  • M48Z58Y-70PC1 --: Same ZEROPOWER family device with identical 8Kx8 organization and 70ns timing but a different voltage/speed grade variant, suitable when the standard 5V version is unavailable.
  • CY14B101PA-SFXI --: nvSRAM with 8Kx8 organization and fast access, suitable as a modern alternative when the original through-hole module is unavailable.

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