Key facts
- Brand
- Intersil
- Model
- ISL1208
- Industry
- Industrial
- Documents
- 3
- Languages
- EN
- Last added
- 2026-10-04
Start here
Intersil ISL1208 I2C Real Time Clock/Calendar Datasheet
The ISL1208 is a low‑power real‑time clock with crystal compensation, calendar registers, power‑fail detection, a single alarm, and 2 bytes of battery‑backed SRAM. It operates from 2.0 V to 5.5 V and supports a 400 kHz I²C interface.
The device offers 15 selectable frequency outputs, automatic backup switching to a battery or super‑capacitor, and is available in 8‑lead MSOP, SOIC and TDFN packages. Applications include utility meters, HVAC equipment, audio/video components, and other industrial or automotive systems.
All Intersil ISL1208 documents by type
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the I²C data rate supported by the ISL1208?
The device supports a 400 kHz I²C data transfer rate.
From: Intersil ISL1208 I2C Real Time Clock/Calendar Datasheet
How many bytes of user SRAM are available?
The device provides 2 bytes of battery‑backed user SRAM.
From: Intersil ISL1208 I2C Real Time Clock/Calendar Datasheet