Overview
The M48T58Y-70MH1F, produced by STMicroelectronics, is a highly integrated 8 Kb x 8 non-volatile static RAM and real-time clock solution. This monolithic chip is designed to provide a battery-backed memory and real-time clock, making it an ideal component for applications requiring reliable data storage and timekeeping. The device is available in two special packages, including a 28-lead SOIC and a CAPHAT™ DIP package, which houses the silicon with a quartz crystal and a long-life lithium button cell in a single package.
Key Specifications
| Parameter | Value |
|---|---|
| Supply Voltage Min | 4.5 V |
| Supply Voltage Max | 5.5 V |
| Operating Temperature Min | 0.0 °C |
| Operating Temperature Max | 70.0 °C |
| Memory Size | 64 Kbit (8 Kb x 8) |
| Packing Type | Tape And Reel |
| RoHS Compliance | Ecopack2 (**) |
| Grade | Industrial |
| Package Name | SOH28 |
Key Features
- Integrated ultra-low power SRAM, real-time clock, power-fail control circuit, and battery.
- BYTEWIDE™ RAM-like clock access.
- 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.
- Self-contained battery and crystal in the CAPHAT™ DIP package.
- Pin and function compatible with JEDEC standard 8 Kb x 8 SRAMs.
- RoHS compliant with lead-free second level interconnect.
Applications
The M48T58Y-70MH1F is suitable for a variety of applications that require non-volatile memory and real-time clock functionality. These include industrial control systems, medical devices, automotive systems, and any other system where reliable timekeeping and data storage are critical. The device's ability to fit into many ROM, EPROM, and EEPROM sockets makes it a versatile choice for upgrading existing systems.
Q & A
- What is the M48T58Y-70MH1F?
The M48T58Y-70MH1F is a 8 Kb x 8 non-volatile static RAM and real-time clock produced by STMicroelectronics. - What are the key features of the M48T58Y-70MH1F?
Key features include integrated ultra-low power SRAM, real-time clock, power-fail control circuit, and battery. It also has BYTEWIDE™ RAM-like clock access and BCD coded time and date. - What are the operating temperature ranges for the M48T58Y-70MH1F?
The operating temperature range is from 0.0 °C to 70.0 °C. - Is the M48T58Y-70MH1F RoHS compliant?
Yes, the M48T58Y-70MH1F is RoHS compliant with lead-free second level interconnect. - What types of packages are available for the M48T58Y-70MH1F?
The device is available in a 28-lead SOIC and a CAPHAT™ DIP package. - How does the power-fail protection work on the M48T58Y-70MH1F?
The device has an automatic power-fail chip deselect and WRITE protection mechanism. When VCC falls below the battery backup switchover voltage, the control circuitry connects the battery to maintain data and clock operation. - Is the M48T58Y-70MH1F compatible with JEDEC standard SRAMs?
Yes, it is pin and function compatible with JEDEC standard 8 Kb x 8 SRAMs. - What is the memory size of the M48T58Y-70MH1F?
The memory size is 64 Kbit (8 Kb x 8). - How does the real-time clock function in the M48T58Y-70MH1F?
The real-time clock updates the clock bytes with current information once per second and stores the century, year, month, date, day, hour, minute, and second in 24-hour BCD format. - Can the M48T58Y-70MH1F be used in existing ROM, EPROM, and EEPROM sockets?
Yes, it can easily fit into many ROM, EPROM, and EEPROM sockets, providing non-volatility without special WRITE timing or limitations on the number of WRITEs).
