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See Product Specifications
| Part Number: | RX-8581JE:B I2C-BUS | 
| Category: | Integrated Circuits (ICs) | 
| Subcategory: | Clock/Timing - Real Time Clocks | 
| Manufacturer: | EPSON | 
| Packaging: | Strip | 
| Product Status: | Obsolete | 
| Type: | Clock/Calendar | 
| Features: | Alarm | 
| Memory Size: | - | 
| Time Format: | - | 
| Date Format: | - | 
| Interface: | I²C | 
| Voltage - Supply: | 1.8V ~ 5.5V | 
| Voltage - Supply, Battery: | - | 
| Current - Timekeeping (Max): | 0.8µA ~ 1.2µA @ 3V ~ 5V | 
| Operating Temperature: | -40°C ~ 85°C | 
| Mounting Type: | Surface Mount | 
| Package / Case: | 20-LSSOJ (0.213", 5.40mm Width) | 
| Supplier Device Package: | 20-VSOJ |