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M48T12-200PC1 from SGS-THOMSON

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M48T12-200PC1

Manufacturer: SGS-THOMSON, ST

16 KBIT (2KB X8) TIMEKEEPER SRAM

Partnumber Manufacturer Quantity Availability
M48T12-200PC1,M48T12200PC1 SGS-THOMSON, ST 182 In Stock

Description and Introduction

16 KBIT (2KB X8) TIMEKEEPER SRAM The M48T12-200PC1 is a Timekeeping RAM (TKRAM) manufactured by SGS-THOMSON (now STMicroelectronics). Below are its key specifications, descriptions, and features:  

### **Specifications:**  
- **Type:** Non-volatile SRAM with integrated real-time clock (RTC)  
- **Density:** 8Kb (1K x 8)  
- **Access Time:** 200ns  
- **Supply Voltage:** 4.5V to 5.5V  
- **Operating Temperature Range:** 0°C to +70°C  
- **Package:** 28-pin DIP (Dual In-line Package)  
- **Battery Backup:** Integrated lithium energy source  
- **Data Retention:** Minimum 10 years in the absence of power  

### **Descriptions and Features:**  
- Combines SRAM with a real-time clock/calendar in a single chip.  
- **Non-volatile operation:** Maintains data and timekeeping during power loss.  
- **Automatic power-fail chip deselect:** Protects data during power transitions.  
- **Clock/Calendar Functions:** Tracks seconds, minutes, hours, day, date, month, and year (including leap year compensation).  
- **Battery Life:** The integrated lithium cell ensures long-term data retention.  
- **Industrial Standard Pinout:** Compatible with JEDEC-standard 8K SRAMs.  
- **Low Power Consumption:** Optimized for battery-backed applications.  

This device is commonly used in systems requiring reliable timekeeping and non-volatile memory, such as embedded controllers, industrial systems, and data loggers.

Application Scenarios & Design Considerations

16 KBIT (2KB X8) TIMEKEEPER SRAM

Alternative Part Number

  • DS1216E --: Phantom clock smartwatch controller that provides nonvolatile timekeeping with an external SRAM, functionally similar to the M48T12 timekeeper role and widely available.
  • BQ4845 --: Real-time clock with embedded battery backup and nonvolatile RAM control, offering comparable timekeeping and power-fail protection in a similar DIP package.
  • M48T08-150PC1 --: Same TIMEKEEPER family from the successor of SGS-Thomson, with equivalent pinout and function; different series suffix makes it a distinguishable drop-in style alternative.
  • M48T02 --: TIMEKEEPER device from a related but distinct series with similar parallel RTC and battery-backed SRAM architecture, suitable as a functional substitute after pinout and timing verification.

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