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900 pcs
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900 pcs | On Request | 1 | On Request | On Request | 08+ | On Request | On Request |
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The Texas Instruments BQ4285P-SB2 is a low-power CMOS real-time clock (RTC) peripheral that provides a time-of-day clock and 100-year calendar with alarm features. It includes 114 bytes of general nonvolatile static RAM (NVSRAM) for data storage. The device supports both 12-hour and 24-hour time formats with optional daylight saving adjustment and automatic leap-year compensation.
Key features include three individually maskable interrupt sources (periodic rates, time-of-day alarm, and end-of-clock update cycle), a programmable square wave output, and automatic backup and write-protect control for external SRAM during power failure. The RTC communicates via a parallel interface and operates from a supply voltage range of 4.5V to 5.5V, with a separate battery backup supply of 2.5V to 4V.
The BQ4285P-SB2 is housed in a 24-pin DIP (0.600 inch, 15.24mm) package with through-hole mounting, making it suitable for legacy and industrial applications requiring a reliable RTC solution. It is designed for direct replacement in IBM AT-compatible computers and other systems requiring accurate timekeeping.
The supply voltage range is 4.5V to 5.5V.
The operating temperature range is 0°C to 70°C.
It comes in a 24-DIP (0.600 inch, 15.24mm) through-hole package, also known as 24-PDIP.
The part is listed as RoHS3 compliant, but this information is unverified.
It has 114 bytes of nonvolatile SRAM.
It uses a parallel interface.
It includes alarm, daylight savings, leap year adjustment, NVSRAM, and square wave output.