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M48T201Y-70MH1 from ST,ST Microelectronics

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M48T201Y-70MH1

Manufacturer: ST

3.3V-5V TIMEKEEPER CONTROLLER

Partnumber Manufacturer Quantity Availability
M48T201Y-70MH1,M48T201Y70MH1 ST 16 In Stock

Description and Introduction

3.3V-5V TIMEKEEPER CONTROLLER The **M48T201Y-70MH1** is a Timekeeper SRAM manufactured by **STMicroelectronics (ST)**. Below are its key specifications, descriptions, and features:

### **Specifications:**
- **Type:** Non-volatile SRAM (NVSRAM) with a built-in real-time clock (RTC)
- **Density:** 128 Kb (16 K × 8)
- **Access Time:** 70 ns
- **Supply Voltage:** 4.5V to 5.5V
- **Operating Temperature Range:** -40°C to +85°C
- **Package:** 28-pin PDIP (Plastic Dual In-line Package)
- **Data Retention:** Minimum 10 years with power applied
- **Clock Accuracy:** ±1 minute per month at 25°C
- **Battery Backup:** Built-in lithium energy source

### **Descriptions:**
- The **M48T201Y-70MH1** combines a **16 KB SRAM** with a **real-time clock (RTC)** in a single chip.
- It includes an **integrated lithium battery** for **non-volatile data retention** when power is lost.
- The RTC provides **seconds, minutes, hours, day, date, month, and year** information with **leap-year compensation** up to 2100.
- It is designed for applications requiring **battery-backed memory and timekeeping**, such as industrial controls, medical devices, and embedded systems.

### **Features:**
- **Non-volatile SRAM with RTC**
- **Automatic battery switchover** during power loss
- **Low-power CMOS technology**
- **Industrial temperature range** (-40°C to +85°C)
- **28-pin PDIP package** for easy integration
- **Self-contained timekeeping** with no external components required
- **Write protection** for critical memory areas

This device is ideal for systems requiring **reliable data storage and accurate timekeeping** without external battery management.

Application Scenarios & Design Considerations

3.3V-5V TIMEKEEPER CONTROLLER

Alternative Part Number

  • DS1556W-70 --: Nonvolatile timekeeping RAM with integrated crystal and battery, 70 ns access, functionally similar to the M48T201Y timekeeper module.
  • BQ4847Y-70 --: Timekeeper SRAM with embedded battery and crystal, 70 ns speed grade, comparable watchdog and RTC features for replacement.
  • M48T58Y-70PC1 --: Same ST TIMEKEEPER family with 70 ns access and battery-backed SRAM, though different package and capacity, usable as a close functional substitute.

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