Datasheet Details
| Part number | DS1285Q |
|---|---|
| Manufacturer | Dallas Semiconductor |
| File Size | 50.99 KB |
| Description | Real Time Clock |
| Datasheet | DS1285Q DS1285 Datasheet (PDF) |
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Overview: DS1285/DS1285Q DS1285/DS1285Q Real Time Clock.
This datasheet includes multiple variants, all published together in a single manufacturer document.
| Part number | DS1285Q |
|---|---|
| Manufacturer | Dallas Semiconductor |
| File Size | 50.99 KB |
| Description | Real Time Clock |
| Datasheet | DS1285Q DS1285 Datasheet (PDF) |
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The DS1285 Real Time Chip is a direct replacement for the MC146818A in IBM AT computer clock/calendar and other applications.
For a complete description of operating conditions, electrical and mechanical characteristics, bus timing, and pin descriptions see the DS12885 data sheet.
PIN DESCRIPTION AD0-AD7 NC MOT CS AS R/W DS RESET IRQ SQW VCC GND X1,X2 VBAT RCLR – – – – – – – – – – – – – – – Multiplexed Address/Data Bus No Connection Bus Type Selection Chip Select Address Strobe Read/Write Input Data Strobe Reset Input Interrupt Request Output (open drain) Square Wave Output +5 Volt Supply Ground 32.768 KHz Crystal Connections +3 Volt
| Part Number | Description |
|---|---|
| DS1285 | Real Time Clock |
| DS1283 | Watchdog Timekeeper Chip |
| DS1284 | Watchdog Timekeepers |
| DS1284 | (DS1284 / DS1286) Watchdog Timekeepers |
| DS1284 | (DS1284 / DS1286) Watchdog Timekeepers |
| DS1286 | Watchdog Timekeepers |
| DS1287A | Real Time Clock |
| DS12885 | Real-Time Clock |
| DS12885Q | Real-Time Clock |
| DS12885T | Real-Time Clock |