Overview
The M48T08-150PC1, produced by STMicroelectronics, is a highly integrated electronic component that combines an 8 K x 8 non-volatile static RAM (SRAM) with a real-time clock (RTC). This device is pin and function compatible with the DS1643, making it a versatile solution for various applications requiring both memory and timekeeping functions. The M48T08-150PC1 is part of the TIMEKEEPER® RAM family, known for its reliability and low power consumption.
Key Specifications
| Parameter | Value |
|---|---|
| Memory Size | 64 Kbit (8 K x 8) |
| Supply Voltage | 4.75 to 5.5 V |
| Power-Fail Deselect Voltage (VPFD) | 4.5 V ≤ VPFD ≤ 4.75 V |
| Clock Accuracy | ±1 minute per month at 25 °C |
| Package Types | 28-pin DIP CAPHAT™, 28-pin SOIC with SNAPHAT® housing |
| Battery Life | Long-life lithium button cell (48 mAh or 120 mAh options) |
| Compatibility | Pin and function compatible with DS1643 and JEDEC standard 8 K x 8 SRAMs |
Key Features
- Integrated ultra-low power SRAM and real-time clock
- BYTEWIDE™ RAM-like clock access
- BCD coded year, month, day, date, hours, minutes, and seconds
- Automatic power-fail chip deselect and WRITE protection
- Software controlled clock calibration for high accuracy applications
- Self-contained battery and crystal in CAPHAT™ or SNAPHAT® packages
- RoHS compliant – Lead-free second level interconnect
Applications
The M48T08-150PC1 is suitable for a wide range of applications that require both non-volatile memory and real-time clock functions. These include:
- Industrial control systems
- Medical devices
- Aerospace and defense systems
- Automotive systems
- Data loggers and recorders
- Any system requiring reliable timekeeping and non-volatile data storage
Q & A
- What is the memory size of the M48T08-150PC1?
The M48T08-150PC1 has a memory size of 64 Kbit (8 K x 8). - What is the typical clock accuracy of the M48T08-150PC1?
The typical clock accuracy is ±1 minute per month at 25 °C. - What are the package options for the M48T08-150PC1?
The device is available in 28-pin DIP CAPHAT™ and 28-pin SOIC with SNAPHAT® housing. - Is the M48T08-150PC1 compatible with other SRAMs?
Yes, it is pin and function compatible with DS1643 and JEDEC standard 8 K x 8 SRAMs. - How does the power-fail protection work?
The device features automatic power-fail chip deselect and WRITE protection. - Can the clock be calibrated for higher accuracy?
Yes, the clock can be calibrated using software for high accuracy applications. - What type of battery is used in the M48T08-150PC1?
The device uses a long-life lithium button cell (48 mAh or 120 mAh options). - Is the M48T08-150PC1 RoHS compliant?
Yes, it is RoHS compliant with lead-free second level interconnect. - What are some common applications for the M48T08-150PC1?
Common applications include industrial control systems, medical devices, aerospace and defense systems, automotive systems, and data loggers. - How is the SNAPHAT® housing used?
The SNAPHAT® housing contains the battery and crystal and can be mounted on top of the SOIC package after surface mount process completion to prevent damage from high temperatures.
