Low Power RTC with Battery Backed SRAM The ISL1208IU8Z-TK is a real-time clock (RTC) module manufactured by INTERSIL (now part of Renesas Electronics). Below are its specifications, descriptions, and features based on factual information from Ic-phoenix technical data files:
### **Specifications:**
- **Manufacturer:** INTERSIL (Renesas Electronics)
- **Part Number:** ISL1208IU8Z-TK
- **Type:** Real-Time Clock (RTC) with Battery Backup
- **Package:** 8-Lead µSOP (Micro Small Outline Package)
- **Supply Voltage:** 2.7V to 5.5V
- **Operating Temperature Range:** -40°C to +85°C
- **Timekeeping Accuracy:** ±5ppm (at 25°C)
- **I²C Interface:** Supports up to 400kHz
- **Battery Backup Voltage:** 1.8V to 5.5V (supports rechargeable or non-rechargeable batteries)
- **Low Power Consumption:**
- Active Mode: 400µA (typical)
- Battery Backup Mode: 1.5µA (typical)
- **Clock Frequency:** 32.768kHz
- **EEPROM:** 128 bytes of non-volatile memory
### **Descriptions:**
The ISL1208IU8Z-TK is a low-power RTC with an integrated oscillator and battery backup support. It provides accurate timekeeping with automatic leap-year compensation and supports an I²C interface for communication with microcontrollers. The device includes a built-in power-fail detection circuit and can switch to battery backup when the main power is lost.
### **Features:**
- **Real-Time Clock with Calendar:** Tracks seconds, minutes, hours, day, date, month, and year (including leap year).
- **Battery Backup Support:** Operates from a backup battery when main power fails.
- **I²C Interface:** Allows easy integration with microcontrollers.
- **Low Power Consumption:** Optimized for battery-operated applications.
- **Automatic Power-Fail Detection:** Switches to backup power seamlessly.
- **128 Bytes of EEPROM:** For storing user data.
- **Programmable Alarm:** Can trigger an interrupt or wake-up signal.
- **Oscillator Compensation:** Adjustable for improved accuracy.
- **Small Form Factor:** 8-Lead µSOP package for space-constrained designs.
This information is strictly based on the manufacturer's datasheet and technical documentation.
