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The RS5C372 is a CMOS type real-time clock which is connected to the CPU via 2-wires and capable of serial transmission of clock and calendar data to the CPU. The RS5C372 can generate various periodic interrupt clock pulses lasting for long period (one month), and alarm interrupt can be made by days of the week, hours, and minutes by two incorporated systems. Since an oscillation circuit is driven at a constant voltage, it undergoes fluctuations of few voltage and consequently offers low current consumption (Typ. 0.5 µA at 3V). It also provides an oscillator halt sensing function applicable for data validation at power-on and other occasions and 32-kHz clock output for an external micro computer. (Ver. A: Nch. open drain output, Ver. B: CMOS output) The product also incorporates a time trimming circuit that adjusts the clock with higher precision by adjusting any errors in crystal oscillator frequencies based on signals from the CPU. The crystal oscillator may be selected from 32.768 kHz or 32.000 kHz types. Integrated into an ultra compact and ultra thin 8-pin SSOP package, the RS5C372 is the optimum choice for equipment requiring small sized and low power consuming products.
Specs & Datasheets
|Timekeeping Supply Voltage Range||RS5C372A: 1.3 V to 6.0 V
RS5C372B: 1.45 V to 6.0 V
|Supply Current||Typ. 0.5 µA|
|Connection to CPU||Two Signal Lines (I2C Bus Interface, MAX. 400 kHz, 7-bit address)|
|Clock Output||32.768 kHz or 32.000 kHz
RS5C372A: Nch Open Drain Output Controllable by Command
RS5C372B: CMOS Output Controllable by Command
|ECO||Clock Adjust||OSC Halt Sensing||Supply Voltage Monitoring Circuit||Automatic Identification of Leap Years||Selectable 12-hour and 24-hour||Backup Switch|
Quality & Packages
Refer to the datasheets for the details on the product.
The package file includes package dimensions, taping specifications, taping reels dimensions, power dissipations, and recommended land pattern.
Please contact us or our distributors for unpublished reliability information.
Sample / Buy
Please contact your local distributors for any sales-related inquiry such as price, stock, delivery, etc.
|Clock Adjust||Clock Adjust Function|
|OSC Halt Sensing||OSC Halt Sensing Function|
|Supply Voltage Monitoring Circuit||Supply Voltage Monitoring Function|
|Automatic Identification of Leap Years||Automatic Identification of Leap Years|
|Selectable 12-hour and 24-hour||Selectable 12-hour and 24-hour|
|Built-in VD with Delay Time||Built-in VD with Delay Time|