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| PartNumber | ISL1209IU10Z | ISL1209IU10 | ISL1209IU10E-TK |
| Description | Real Time Clock I2CAL TIME CLK/CLNDR W/EVENT DETCT 10LD | IC RTC EVENT REC I2C 10-MSOP | |
| Manufacturer | Renesas Electronics | Intersil | - |
| Product Category | Real Time Clock | Clock/Timing - Real Time Clocks | - |
| RoHS | Y | - | - |
| Mounting Style | SMD/SMT | - | - |
| Package / Case | MSOP-10 | - | - |
| RTC Bus Interface | Serial, I2C | - | - |
| Date Format | DW:DM:M:Y | YY-MM-DD-dd | - |
| Time Format | HH:MM:SS | HH:MM:SS (12/24 hr) | - |
| Battery Backup Switching | Backup Switching | - | - |
| RTC Memory Size | 2 B | - | - |
| Supply Voltage Max | 5.5 V | - | - |
| Supply Voltage Min | 2.7 V | - | - |
| Minimum Operating Temperature | - 40 C | - | - |
| Maximum Operating Temperature | + 85 C | - | - |
| Packaging | Tube | Tube | - |
| Function | Alarm, Calendar, Clock | - | - |
| Height | 0.95 mm | - | - |
| Length | 3.05 mm | - | - |
| Series | ISL1209 | - | - |
| Width | 3.05 mm | - | - |
| Brand | Renesas / Intersil | - | - |
| Moisture Sensitive | Yes | - | - |
| Product Type | Real Time Clocks | - | - |
| Factory Pack Quantity | 80 | - | - |
| Subcategory | Clock & Timer ICs | - | - |
| Unit Weight | 0.000917 oz | - | - |
| Type | - | Time Event Recorder | - |
| Package Case | - | 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) | - |
| Operating Temperature | - | -40°C ~ 85°C | - |
| Mounting Type | - | Surface Mount | - |
| Features | - | Alarm, Leap Year, SRAM | - |
| Interface | - | I2C, 2-Wire Serial | - |
| Voltage Supply | - | 2.7 V ~ 5.5 V | - |
| Supplier Device Package | - | 10-MSOP | - |
| Memory Size | - | 2B | - |
| Voltage Supply Battery | - | 1.8 V ~ 5.5 V | - |
| Current Timekeeping Max | - | 4μA ~ 6μA @ 3V ~ 5V | - |