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Philips Semiconductors
Preliminary User Manual
ARM-based Microcontroller
LPC2119/2129/2194/2292/2294
18. REAL TIME CLOCK
FEATURES
• Measures the passage of time to maintain a calendar and clock.
• Ultra Low Power design to support battery powered systems.
• Provides Seconds, Minutes, Hours, Day of Month, Month, Year, Day of Week, and Day of Year.
• Programmable Reference Clock Divider allows adjustment of the RTC to match various crystal frequencies.
DESCRIPTION
The Real Time Clock (RTC) is designed to provide a set of counters to measure time during system power on and off operation.
The RTC has been designed to use little power, making it suitable for battery powered systems where the CPU is not running
continuously (Idle mode).
Real Time Clock
242
May 03, 2004
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