M48T35AV-10PC1
Overview
The M48T35AV-10PC1 is a 3.3V Timekeeper NVRAM that integrates a real-time clock (RTC), an ultra-low power SRAM, and a long-life lithium battery within a single 28-pin CAPHAT DIP package. It provides 32 Kbit x 8 of non-volatile storage and allows for BYTEWIDE clock access with an interface that is pin-compatible with standard JEDEC SRAMs. The module includes automatic power-fail chip deselect and write protection circuitry to ensure data integrity during power fluctuations.
Why Choose This Part
The integrated crystal and battery simplify board layout by eliminating the need for external timing components and complex battery management circuits. Its BYTEWIDE interface allows the RTC to be treated like standard memory, reducing software complexity for CPU-based data access. The CAPHAT package ensures that the battery and crystal are shielded from environmental factors while maintaining a standard through-hole footprint.
Applications
Key Specifications
Getting Started
Integration requires mapping the device into the processor's memory space as a standard 32 KB SRAM. Engineers should verify that the system power supply stays within the 3.0V to 3.6V range and implement a standard parallel bus interface for reading and writing BCD-coded time data. Because the battery is integrated into the package, avoid exposing the module to high-temperature reflow processes that exceed the 70 degrees Celsius operating limit.
