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| Part Number | BU9873FVT-GE2 | BU9873F-GTE2 | BU9873FVM-GTTR | BU9873FJ-GTE2 |
| Manufacturer | Rohm Semiconductor | Rohm Semiconductor | Rohm Semiconductor | Rohm Semiconductor |
| Series | - | - | - | - |
| Package/Case | 8-TSSOP (0.173", 4.40mm Width) | 8-SOIC (0.173", 4.40mm Width) | 8-VSSOP, 8-MSOP (0.110", 2.80mm Width) | 8-SOIC (0.154", 3.90mm Width) |
| Packaging | Tape & Reel (TR) | Tape & Reel (TR) | Tape & Reel (TR) | Tape & Reel (TR) |
| Product Status | Not For New Designs | Not For New Designs | Not For New Designs | Not For New Designs |
| Programmable | Not Verified | Not Verified | Not Verified | Not Verified |
| Type | Clock/Calendar | Clock/Calendar | Clock/Calendar | Clock/Calendar |
| Features | Alarm, Leap Year | Alarm, Leap Year | Alarm, Leap Year | Alarm, Leap Year |
| Memory Size | - | - | - | - |
| Time Format | HH:MM:SS (12/24 hr) | 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 | YY-MM-DD-dd |
| Interface | I2C, 2-Wire Serial | I2C, 2-Wire Serial | I2C, 2-Wire Serial | I2C, 2-Wire Serial |
| Voltage - Supply | 1.8V ~ 5.5V | 1.8V ~ 5.5V | 1.8V ~ 5.5V | 1.8V ~ 5.5V |
| Voltage - Supply, Battery | - | - | - | - |
| Current - Timekeeping (Max) | 1µA ~ 1.35µA @ 3V ~ 5.5V | 1µA ~ 1.35µA @ 3V ~ 5.5V | 1µA ~ 1.35µA @ 3V ~ 5.5V | 1µA ~ 1.35µA @ 3V ~ 5.5V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Grade | - | - | - | - |
| Qualification | - | - | - | - |
| Supplier Device Package | 8-TSSOP-B | 8-SOP | 8-MSOP | 8-SOP-J |
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