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MCP79400-I/MS, MSOP-8 Real-tIme Clocks (RTC)
Clock/Timing\Real Time Clocks\Clock/Timing\Real Time ClocksMCP7940N Real-Time Clock/Calendar (RTCC)
Microchip Technology MCP7940N Real-Time Clock/Calendar (RTCC) uses digital timing compensation for an accurate clock/calendar, a programmable output control for versatility, and a power sense circuit that automatically switches to the backup supply. Using a low-cost 32.768kHz crystal, it tracks time using several internal registers. For communication, the MCP7940N uses the I 2 C bus. The clock/calendar automatically adjusts for months with fewer than 31 days, including corrections for leap years. The clock operates in either the 24-hour or 12-hour format with an AM/PM indicator and settable alarm(s) to the second, minute, hour, or day of the week, date, or month. Using the programmable CLKOUT, frequencies of 32.768kHz, 8.192kHz and 4.096kHz and 1Hz can be generated from the external crystal. The device is fully accessible through the serial interface while V CC is between 1.8V and 5.5V, but can operate down to 1.3V for timekeeping and SRAM retention only.
| Interface | I2C |
| Operating Voltage | 1.8V~5.5V |
| Battery Backup Switching | Backup Switching |
| Brand | Microchip Technology |
| Date Format | YY-MM-DD-dd |
| Factory Pack Quantity: Factory Pack Quantity | 100 |
| Function | Calendar, Clock |
| Manufacturer | Microchip |
| Maximum Operating Temperature | +85 C |
| Minimum Operating Temperature | -40 C |
| Moisture Sensitive | Yes |
| Mounting Style | SMD/SMT |
| Package / Case | MSOP-8 |
| Packaging | Tube |
| Product Category | Real Time Clock |
| Product Type | Real Time Clocks |
| RTC Bus Interface | Serial, 2-Wire, I2C |
| RTC Memory Size | 64 B |
| Subcategory | Clock & Timer ICs |
| Supply Voltage - Max | 5.5 V |
| Supply Voltage - Min | 1.8 V |
| Time Format | HH:MM:SS(12 hr, 24 hr) |
| Bus Type | Serial(2-Wire, I2C) |
| Date Format | DW |
| Mounting | Surface Mount |
| Operating Supply Voltage (Max) | 5.5(V) |
| Operating Supply Voltage (Min) | 1.8(V) |
| Operating Supply Voltage (Typ) | 2.5/3.3/5(V) |
| Operating Temperature (Max) | 85C |
| Operating Temperature (Min) | -40C |
| Operating Temperature Classification | Industrial |
| Package Type | MSOP |
| Packaging | Rail/Tube |
| Pin Count | 8 |
| Rad Hardened | No |
| Time Format | HH |
| User RAM | 64(B) |
| Вес, г | 0.27 |
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