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M48T86-MH1 from ST,ST Microelectronics

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M48T86-MH1

Manufacturer: ST, STM, SGS Thomson

5 VOLT PC REAL TIME CLOCK

Partnumber Manufacturer Quantity Availability
M48T86-MH1,M48T86MH1 ST, STM, SGS Thomson 1882 In Stock

Description and Introduction

5 VOLT PC REAL TIME CLOCK The M48T86-MH1 is a real-time clock (RTC) manufactured by STMicroelectronics (STM). Below are the factual specifications, descriptions, and features based on available data:  

### **Manufacturer:**  
- **STM (STMicroelectronics)**  

### **Specifications:**  
- **Type:** Real-Time Clock (RTC) with NVRAM  
- **Package:** 28-pin SOIC (MH1 suffix may indicate a specific package variant)  
- **Timekeeping Accuracy:** Typically ±1 minute per month at 25°C  
- **Operating Voltage:** 4.5V to 5.5V  
- **Battery Backup Voltage:** 2.5V to 3.5V (supports lithium or supercapacitor backup)  
- **NVRAM Capacity:** 114 bytes (user-accessible)  
- **Interface:** Parallel (8-bit)  
- **Clock Frequency:** 32.768 kHz (crystal-controlled)  
- **Temperature Range:** Commercial (0°C to +70°C) or Industrial (-40°C to +85°C), depending on variant  

### **Descriptions:**  
- The M48T86-MH1 is a non-volatile RAM (NVRAM) with an integrated real-time clock.  
- It maintains timekeeping functions (seconds, minutes, hours, day, date, month, year) even during power loss.  
- Includes leap year compensation up to 2100.  
- Features automatic power-fail detection and switchover to battery backup.  

### **Features:**  
- **Integrated RTC & NVRAM:** Combines timekeeping with non-volatile memory storage.  
- **Battery Backup Support:** Ensures continuous operation during power interruptions.  
- **Low Power Consumption:** Optimized for battery-backed applications.  
- **Programmable Alarm & Watchdog Timer:** Supports system wake-up or reset functions.  
- **Century Byte:** Handles year 2000 and beyond.  
- **Industrial-Grade Options:** Available for extended temperature ranges.  

This information is based on the manufacturer's datasheet and technical documentation for the M48T86-MH1. For precise details, refer to STMicroelectronics' official resources.

Application Scenarios & Design Considerations

5 VOLT PC REAL TIME CLOCK

Alternative Part Number

  • DS12887A+ --: Industry-standard real-time clock with integrated battery and 128-byte RAM, functionally equivalent to the M48T86 timekeeper and widely used as a drop-in replacement in similar sockets.
  • BQ3285S --: Real-time clock module with embedded crystal and battery backup, comparable register set and parallel interface, suitable alternative for timekeeping applications.
  • M48T58Y-70PC1 --: Same TIMEKEEPER family from ST with similar parallel interface and battery-backed SRAM, offering compatible timing functions though with different memory density.
  • DS12885+ --: Industry-standard RTC with parallel bus and compatible register set; requires external crystal and battery but offers equivalent timing functions.
  • M48T58Y --: Same TIMEKEEPER family from the successor of SGS Thomson, offering comparable parallel RTC functionality and pin-compatible module options.

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