ISL12023IVZ Low Power RTC with Battery-Backed SRAM and Embedded Temp Compensation ±5ppm with Auto Day Light Saving; Temperature Range: -40°C to 85°C; Package: 14-TSSOP
ISL12022IBZ-T Low Power RTC with Battery-Backed SRAM and Embedded Temp Compensation ±5ppm with Auto Day Light Saving; Temperature Range: -40°C to 85°C; Package: 8-SOIC T&R