RV5C339A Datasheet, PDF (3/51 Pages) RICOH electronics devices division – 3-WIRE SERIAL INTERFACE REAL-TIME CLOCK ICs WITH VOLTAGE MONITORING FUNCTION

RV5C339A
APPLICATION MANUAL
CONTENTS
OUTLINE ^{......................................................................................................}1
FEATURES^{....................................................................................................}1
BLOCK DIAGRAM ^{.........................................................................................}2
APPLICATIONS ^{.............................................................................................}2
PIN CONFIGURATION ^{...................................................................................}2
PIN DESCRIPTIONS ^{......................................................................................}3
ABSOLUTE MAXIMUM RATINGS ^{...................................................................}4
RECOMMENDED OPERATING CONDITIONS ^{.................................................}4
DC ELECTRICAL CHARACTERISTICS ^{...........................................................}5
AC ELECTRICAL CHARACTERISTICS ^{...........................................................}6
GENERAL DESCRIPTION^{..............................................................................}7
FUNCTIONAL DESCRIPTIONS ^{......................................................................}9
1. Address Mapping ^{.........................................................................................}9
2. Register Settings ^{.......................................................................................}10
USAGES^{......................................................................................................}21
1. Data Transfer Formats ^{..................................................................................}21
2. Configuration of Oscillation Circuit and Correction of Time Count Deviations^{...................}27
3. Oscillation Halt Sensing and Supply Voltage Monitoring^{...........................................}32
4. Alarm and Periodic Interrupt ^{...........................................................................}34
5. 32-kHz Clock Output^{....................................................................................}37
6. Typical Applications ^{.....................................................................................}38
7. Typical Characteristics^{..................................................................................}41
8. Typical Software-based Operations ^{...................................................................}43
PACKAGE DIMENSIONS ^{..............................................................................}47
TAPING SPECIFICATION^{..............................................................................}47