BQ4845P IC Real Time Clock (RTC) IC Clock/Calendar Parallel DIP28 BQ4845P

Product Overview: The Texas Instruments bq4845P is a low-power parallel Real-Time Clock (RTC) with an integrated CPU supervisor housed in a 28-pin plastic Dual In-line Package (DIP). It integrates a time-of-day clock, a 100-year calendar counting in BCD format, and an intelligent microprocessor monitor. Designed to protect external static RAM (SRAM) and ensure system stability, the device automatically triggers microprocessor resets, switches over to battery backup, and handles external RAM write-protection during power-fail scenarios. It is widely used in fax machines, copiers, data loggers, point-of-sale terminals, and industrial control systems.