Overview
The M48T201V-85MH1E is a supervisory circuit with integrated SRAM and real-time clock (RTC) produced by STMicroelectronics. This device is part of the TIMEKEEPER® family and is designed to provide a highly integrated solution for battery-backed memory and real-time clock functions. Although the M48T201V-85MH1E is currently obsolete and no longer manufactured, it remains relevant for understanding the capabilities and features of similar devices in the TIMEKEEPER® series.
Key Specifications
| Parameter | Specification |
|---|---|
| Access Time | 85 ns |
| Case/Package | SOIC |
| Height | 2.69 mm |
| Memory Size | 256 Kbit (32 Kb x 8) |
| Supply Voltage | 4.5 V to 5.5 V |
| Power-Fail Deselect Voltage (VPFD) | 4.2 V to 4.5 V (for M48T35Y equivalent) |
| Battery and Crystal | Replaceable SNAPHAT® housing containing battery and crystal |
Key Features
- Integrated ultra-low power SRAM and real-time clock
- Programmable alarms and watchdog timer
- BCD coded year, month, day, date, hours, minutes, and seconds
- Frequency test output for real-time clock
- Automatic power-fail chip deselect and WRITE protection
- Pin and function compatible with JEDEC standard 32 Kb x 8 SRAMs
- RoHS compliant – Lead-free second level interconnect
- Replaceable SNAPHAT® housing containing the battery and crystal
Applications
The M48T201V-85MH1E is suitable for various applications requiring non-volatile memory and real-time clock functions, such as:
- Industrial control systems
- Medical devices
- Aerospace and defense systems
- Automotive systems
- Consumer electronics requiring precise timekeeping and data retention
Q & A
- What is the M48T201V-85MH1E?
The M48T201V-85MH1E is a supervisory circuit with integrated SRAM and real-time clock produced by STMicroelectronics.
- Why is the M48T201V-85MH1E obsolete?
The M48T201V-85MH1E is no longer manufactured by STMicroelectronics and has been replaced by newer models.
- What is the access time of the M48T201V-85MH1E?
The access time of the M48T201V-85MH1E is 85 ns.
- What type of package does the M48T201V-85MH1E use?
The M48T201V-85MH1E uses an SOIC package.
- Does the M48T201V-85MH1E have a replaceable battery and crystal?
- What are the key features of the M48T201V-85MH1E?
The key features include integrated ultra-low power SRAM and real-time clock, programmable alarms, watchdog timer, BCD coded time and date, and automatic power-fail protection.
- Is the M48T201V-85MH1E RoHS compliant?
- What are some common applications for the M48T201V-85MH1E?
- How does the power-fail protection work in the M48T201V-85MH1E?
The device features automatic power-fail chip deselect and WRITE protection to ensure data integrity during power failures.
- Is the M48T201V-85MH1E compatible with standard SRAMs?
