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| Part Number | PCF2127AT/1,512 | PCF2129AT/1,512 | PCF2127AT/1,518 |
|---|---|---|---|
| Manufacturer | NXP USA Inc. | NXP USA Inc. | NXP USA Inc. |
| Product Status | Obsolete | Obsolete | Obsolete |
| Type | Clock/Calendar | Clock/Calendar | Clock/Calendar |
| Features | Alarm, Leap Year, Square Wave Output, SRAM, TCXO/Crystal, Watchdog Timer | Alarm, Leap Year, Square Wave Output, TCXO/Crystal, Watchdog Timer | Alarm, Leap Year, Square Wave Output, SRAM, TCXO/Crystal, Watchdog Timer |
| Memory Size | 512B | - | 512B |
| Time Format | HH:MM:SS (12/24 hr) | HH:MM:SS (12/24 hr) | HH:MM:SS (12/24 hr) |
| Date Format | YY-MM-DD-dd | YY-MM-DD-dd | YY-MM-DD-dd |
| Interface | I²C, 2-Wire Serial | I²C, 2-Wire Serial | I²C, 2-Wire Serial |
| Voltage - Supply | 1.8V ~ 4.2V | 1.8V ~ 4.2V | 1.8V ~ 4.2V |
| Voltage - Supply, Battery | 1.8V ~ 4.2V | 1.8V ~ 4.2V | 1.8V ~ 4.2V |
| Current - Timekeeping (Max) | 1.5µA @ 3.3V | 1.5µA @ 3.3V | 1.5µA @ 3.3V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount |
| Package / Case | 20-SOIC (0.295", 7.50mm Width) | 20-SOIC (0.295", 7.50mm Width) | 20-SOIC (0.295", 7.50mm Width) |
| Supplier Device Package | 20-SO | 20-SO | 20-SO |
