| ISL12022MA | Intersil | Low Power RTC Module with Battery Backed SRAM, Integrated ±5ppm Temp Compensation and Crystal | 
| ISL12022MR5421 | Intersil | Low Power RTC Module with Battery Backed SRAM, Integrated Temp Comp and Auto Daylight Saving | 
| ISL12057 | Intersil | Low Cost and Low Power I2C RTC/Calendar with Alarm Function and Dual IRQ pins | 
| ISL12058 | Intersil | Low Cost, Low Power I2C-Bus™ Real Time Clock/Calendar Low Power and Low Cost RTC with Alarm Function | 
| ISL12022M | Intersil | Low Power RTC Module with Battery Backed SRAM, Integrated ±5ppm Temperature Sensor and Crystal | 
| ISL12026A | Intersil | Real Time Clock/Calendar with I2C Bus™ and EEPROM | 
| ISL12008 | Intersil | I2C Real Time Clock with Battery Backup Low Power RTC with Battery ReSeal™ Function | 
| ISL12082 | Intersil | Low Power RTC with Battery ReSeal™, 2 IRQs, Hundredths of a Second Time, and Crystal Compensation | 
| ISL12024IRTC | Intersil | Real-Time Clock/Calendar with Embedded Unique ID | 
| ISL12020M | Intersil | Real Time Clock with Embedded Crystal, ±5ppm Accuracy |