Overview
The M48T35AV-10PC1, produced by STMicroelectronics, is a 32 Kbit x 8 non-volatile static RAM and real-time clock. This monolithic chip is designed to provide a highly integrated battery-backed memory and real-time clock solution. It is pin and function equivalent to any JEDEC standard 32 Kbit x 8 SRAM and can easily fit into many ROM, EPROM, and EEPROM sockets, offering the non-volatility of PROMs without special WRITE timing or limitations on the number of WRITEs.
Key Specifications
| Operating Range | Commercial |
|---|---|
| Supply Voltage Min (Volt) | 3.0 |
| Supply Voltage Max (Volt) | 3.6 |
| Operating Temp Min (Celsius) | 0.0 |
| Operating Temp Max (Celsius) | 70.0 |
| ECCN US | EAR99 |
| ECCN EU | NEC |
| Packing Type | Tube |
| RoHs compliant | Ecopack2 |
| Grade | Industrial |
| Package Name | PDIP 28 .7 |
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.
- Battery low flag (BOK).
- Frequency test output for real-time clock.
- Automatic power-fail chip deselect and WRITE protection.
- WRITE protect voltage (VPFD = power-fail deselect voltage): 2.7 V ≤ VPFD ≤ 3.0 V.
- Self-contained battery and crystal in the CAPHAT™ DIP package.
- SOIC package provides direct connection for a SNAPHAT® housing containing the battery and crystal.
- SNAPHAT® housing (battery and crystal) is replaceable.
- Pin and function compatible with JEDEC standard 32 Kbit x 8 SRAMs.
- RoHS compliant – Lead-free second level interconnect.
Applications
The M48T35AV-10PC1 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
- Consumer electronics requiring data logging and timekeeping
- Any system needing battery-backed SRAM and real-time clock capabilities
Q & A
- What is the M48T35AV-10PC1?
The M48T35AV-10PC1 is a 32 Kbit x 8 non-volatile static RAM and real-time clock produced by STMicroelectronics.
- What are the key features of the M48T35AV-10PC1?
Key features include integrated SRAM, real-time clock, power-fail control circuit, battery low flag, and automatic power-fail chip deselect and WRITE protection.
- What are the operating voltage and temperature ranges for the M48T35AV-10PC1?
The operating voltage range is 3.0 to 3.6 volts, and the operating temperature range is 0 to 70 degrees Celsius.
- Is the M48T35AV-10PC1 RoHS compliant?
- What types of packages are available for the M48T35AV-10PC1?
The chip is available in 28-pin DIP CAPHAT™ and 28-pin SOIC packages.
- How does the SNAPHAT® housing work with the SOIC package?
The SNAPHAT® housing containing the battery and crystal can be mounted on top of the SOIC package after the surface mount process, preventing potential damage due to high temperatures.
- What is the purpose of the power-fail control circuit?
The power-fail control circuit monitors the supply voltage and write-protects the SRAM when the voltage falls below a certain threshold, ensuring data security.
- Can the M48T35AV-10PC1 be used in place of standard SRAMs?
- How is the real-time clock information accessed?
The real-time clock information is stored in memory locations and can be accessed in the same manner as any other location in the static memory array.
- What is the significance of the BCD coded year, month, day, date, hours, minutes, and seconds?
This feature allows for automatic corrections for 28, 29 (leap year), 30, and 31 day months, providing accurate timekeeping.
