 |  | | |
| PartNumber | R2221L-E2 | R2221RX4 | R2221T-E2 |
| Description | Real Time Clock 2-Wire Real Time Clock IC | ||
| Manufacturer | Ricoh Electronics | - | - |
| Product Category | Real Time Clock | - | - |
| RoHS | Y | - | - |
| Mounting Style | SMD/SMT | - | - |
| Package / Case | QFN018018-12 | - | - |
| RTC Bus Interface | Serial, 2-Wire, I2C | - | - |
| Date Format | BCD format | - | - |
| Time Format | BCD format | - | - |
| Battery Backup Switching | No Backup Switching | - | - |
| Supply Voltage Max | 5.5 V | - | - |
| Supply Voltage Min | 1.5 V | - | - |
| Minimum Operating Temperature | - 40 C | - | - |
| Maximum Operating Temperature | + 85 C | - | - |
| Packaging | Reel | - | - |
| Function | Alarm, Calendar, Clock, Timer Interrupt | - | - |
| Product | Real Time Clocks | - | - |
| Series | R2221L | - | - |
| Type | CMOS Real-Time Clock and Calendar | - | - |
| Brand | Ricoh Electronic Devices Company | - | - |
| Product Type | Real Time Clock | - | - |
| Factory Pack Quantity | 3000 | - | - |
| Subcategory | Clock & Timer ICs | - | - |