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| Part Number | ISL12028IBZ | ISL12028IVZ | ISL12058IBZ | ISL12029IBZ | ISL12022IBZ | ISL12024IBZ | ISL12025IBZ | ISL12026IBZ | ISL12027IBZ | ISL12028IBAZ |
|---|---|---|---|---|---|---|---|---|---|---|
| Manufacturer | Intersil | Intersil | Renesas Electronics America Inc | Renesas Electronics America Inc | Renesas Electronics America Inc | Renesas Electronics America Inc | Intersil | Renesas Electronics America Inc | Intersil | Renesas Electronics America Inc |
| Product Status | Obsolete | Obsolete | Active | Obsolete | Active | Obsolete | Obsolete | Active | Obsolete | Obsolete |
| Type | Clock/Calendar | Clock/Calendar | Clock/Calendar | Clock/Calendar | Clock/Calendar | Clock/Calendar | Clock/Calendar | Clock/Calendar | Clock/Calendar | Clock/Calendar |
| Features | Alarm, Leap Year, Supervisor, Watchdog Timer | Alarm, Leap Year, Supervisor, Watchdog Timer | Alarm, Leap Year | Alarm, Leap Year, Supervisor, Watchdog Timer | Alarm, Daylight Savings, Leap Year, SRAM | Alarm, Leap Year, Unique ID | Alarm, Leap Year, Supervisor, Unique ID, Watchdog Timer | Alarm, Leap Year | Alarm, Leap Year, Supervisor, Watchdog Timer | Alarm, Leap Year, Supervisor, Watchdog Timer |
| Memory Size | - | - | - | - | 128B | - | - | - | - | - |
| 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) | HH:MM:SS (12/24 hr) | HH:MM:SS (12/24 hr) | 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 | YY-MM-DD-dd | YY-MM-DD-dd | 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 | I²C, 2-Wire Serial | I²C, 2-Wire Serial | I²C, 2-Wire Serial | I²C, 2-Wire Serial | I²C, 2-Wire Serial | I²C, 2-Wire Serial |
| Voltage - Supply | 2.7V ~ 5.5V | 2.7V ~ 5.5V | 1.8V ~ 3.6V | 2.7V ~ 5.5V | 2.7V ~ 5.5V | 2.7V ~ 5.5V | 2.7V ~ 5.5V | 2.7V ~ 5.5V | 2.7V ~ 5.5V | 2.7V ~ 5.5V |
| Voltage - Supply, Battery | 1.8V ~ 5.5V | 1.8V ~ 5.5V | - | 1.8V ~ 5.5V | 1.8V ~ 5.5V | 1.8V ~ 5.5V | 1.8V ~ 5.5V | 1.8V ~ 5.5V | 1.8V ~ 5.5V | 1.8V ~ 5.5V |
| Current - Timekeeping (Max) | 10µA ~ 20µA @ 2.7V ~ 5.5V | 10µA ~ 20µA @ 2.7V ~ 5.5V | 0.65µA @ 1.8V | 10µA ~ 20µA @ 2.7V ~ 5.5V | 14µA ~ 15µA @ 3V ~ 5V | 10µA ~ 20µA @ 2.7V ~ 5.5V | 10µA ~ 20µA @ 2.7V ~ 5.5V | 10µA ~ 20µA @ 2.7V ~ 5.5V | 10µA ~ 20µA @ 2.7V ~ 5.5V | 10µA ~ 20µA @ 2.7V ~ 5.5V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C | -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 | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Package / Case | 14-SOIC (0.154", 3.90mm Width) | 14-TSSOP (0.173", 4.40mm Width) | 8-SOIC (0.154", 3.90mm Width) | 14-SOIC (0.154", 3.90mm Width) | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC (0.154", 3.90mm Width) | 14-SOIC (0.154", 3.90mm Width) |
| Supplier Device Package | 14-SOIC | 14-TSSOP | 8-SOIC | 14-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 14-SOIC |
