ISL12058

DATASHEET ISL12058 Low Cost and Low Power I2C-Bus Real Time Clock/Calendar Low Power and Low Cost RTC with Alarm Function The ISL12058 device is a low power real time clock with clock/calendar, and alarm function. The oscillator uses an external, low-cost 32.768kHz crystal. The real time clock tracks time with separate registers for hours, minutes, and seconds. The device has calendar registers for date, month, year and day of the week. The calendar is accurate through 2099, with automatic leap year correction. 3.3V 0.1µ 3 x 4.7k 0.1µ 1 X1 2 X2 3 NC 4 GND VDD 8 IRQ/FOUT 7 SCL 6 SDA 5 ISL12058 VDD INT SCL MCU SDA GND FIGURE 1. TYPICAL APPLICATION CIRCUIT 3.3V BAT54C VBAT (3V) 0.1µ 3 x 4.7k 0.1µ 1 X1 2 X2 3 NC 4 GND VDD 8 IRQ/FOUT 7 SCL 6 SDA 5 ISL12058 VDD INT SCL MCU SDA GND FIGURE 2. TYPICAL APPLICATION WITH BACKUP SUPPLY Features Real Time Clock/Calendar - Tracks Time in Hours, Minutes, and Seconds - Day of the Week, Date, Month, and Year 4 Selectable Frequency Outputs 2 Alarms - Settable to the Second, Minute, Hour, Day of the Week, Date, or Month I2C Interface - 400kHz Data Transfer Rate Small Package Options - 8 Ld 3mmx3mm TDFN Package - 8 Ld MSOP Package - 8 Ld SOIC Package - Pb-Free (RoHS Compliant) Low Cost 3V Alternative to ISL1208 and ISL12082 Applications Utility Meters HVAC Equipment Audio/Video Components Set-Top Box/Television Modems Network Routers, Hubs, Switches, Bridges Cellular Infrastructure Equipment Fixed...