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RTC72421

Part Number	RTC72421
Manufacturer	ETC
Description	4-bit REAL TIME CLOCK MODULE
Published	Apr 16, 2005
Detailed Description	REAL TIME CLOCK MODULE RTC72421 The RTC72421 module is a Real Time Clock designed for use with microprocessors. The buil...
Datasheet	RTC72421 PDF File

Overview

REAL TIME CLOCK MODULE RTC72421 The RTC72421 module is a Real Time Clock designed for use with microprocessors.
The built-in 32.
768 kHz standard clock quartz oscillator eliminates the need for regulation.
The RTC72421 uses little or no external hardware (depending on application), and greatly enhances ease of incorporation into circuit designs.
FEATURES • Built-in quartz crystal • Time and date functions • 12/24 hour clock switchover and automatic leap year setting • Faster access time @ 120 nS • CMOS circuitry • 18 pin dual in line package • 4 bit parallel data string • Application notes available * • ELECTRICAL CHARACTERISTICS PARAMETERS Frequency Tolerance RTC 72421A RTC 72421B Frequenc...

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