Overview
The M48T512Y-70PM1 is a non-volatile static RAM (SRAM) and real-time clock (RTC) module produced by STMicroelectronics. This device is part of the TIMEKEEPER® series and is designed to provide a reliable and integrated solution for timekeeping and data storage. It combines a 512Kb x 8 SRAM, a real-time clock, power-fail control circuit, battery, and crystal in a single 32-pin DIP package. The M48T512Y-70PM1 operates at supply voltages between 4.5V and 5.5V and features automatic power-fail detection and write protection to ensure data integrity during power failures.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage (VCC) | 4.5 to 5.5 | V |
| Power-Fail Deselect Voltage (VPFD) | 4.2 to 4.5 | V |
| Memory Size | 512Kb x 8 | bits |
| Operating Temperature | 0 to 70 | °C |
| Storage Temperature | –40 to 85 | °C |
| Access Time | 70 ns | ns |
| Data Retention Time | 10 years | years |
| Package Type | 32-pin DIP |
Key Features
- Non-Volatile SRAM: Combines the benefits of SRAM with the non-volatility of Flash, eliminating the need for special write timing or limitations on the number of writes.
- Real-Time Clock: Includes a quartz-controlled clock oscillator with automatic corrections for months, leap years, and other date/time adjustments.
- Power-Fail Detection and Write Protection: Automatically switches to an internal battery during power failures, ensuring data integrity and clock operation.
- Software-Controlled Clock Calibration: Allows for high accuracy clock adjustments through software-controlled calibration bits.
- Low Power Consumption: Features low power dissipation in standby mode, making it suitable for battery-powered applications.
- Integrated Battery and Crystal: Houses a controller chip, SRAM, quartz crystal, and a long-life lithium button cell in a single package.
Applications
- Industrial Automation: Suitable for applications requiring precise timekeeping and data storage in industrial environments.
- Medical Devices: Used in medical devices that require reliable timekeeping and non-volatile data storage.
- Aerospace and Defense: Ideal for applications where data integrity and precise timekeeping are critical.
- Consumer Electronics: Can be used in various consumer electronic devices that need reliable timekeeping and data storage.
- Automotive Systems: Suitable for automotive systems requiring robust and reliable timekeeping and data storage.
Q & A
- What is the M48T512Y-70PM1?
The M48T512Y-70PM1 is a non-volatile SRAM and real-time clock module produced by STMicroelectronics.
- What is the operating voltage range of the M48T512Y-70PM1?
The operating voltage range is between 4.5V and 5.5V.
- What is the power-fail deselect voltage (VPFD) range for the M48T512Y-70PM1?
The VPFD range is between 4.2V and 4.5V.
- How much data can the M48T512Y-70PM1 store?
The device can store 512Kb x 8 bits of data.
- What is the access time of the M48T512Y-70PM1?
The access time is 70 ns.
- How long does the M48T512Y-70PM1 retain data in the absence of power?
The device retains data for at least 10 years in the absence of power.
- What type of package does the M48T512Y-70PM1 come in?
The device comes in a 32-pin DIP package.
- Does the M48T512Y-70PM1 have built-in clock calibration?
Yes, it features software-controlled clock calibration for high accuracy applications.
- How does the M48T512Y-70PM1 handle power failures?
The device automatically switches to an internal battery during power failures, ensuring data integrity and clock operation.
- What are some common applications of the M48T512Y-70PM1?
Common applications include industrial automation, medical devices, aerospace and defense, consumer electronics, and automotive systems.
