RP5C62 Datasheet, PDF (3/48 Pages) RICOH electronics devices division – REAL-TIME CLOCK

RP/RF/RS5C62
APPLICATION MANUAL
CONTENTS
OUTLINE ^{......................................................................................................}1
FEATURES^{....................................................................................................}1
BLOCK DIAGRAM ^{.........................................................................................}1
PIN CONFIGURATION ^{...................................................................................}2
PIN DESCRIPTION ^{........................................................................................}2
ABSOLUTE MAXIMUM RATINGS ^{...................................................................}3
RECOMMENDED OPERATING CONDITION^{....................................................}3
DC ELECTRICAL CHARACTERISTICS ^{...........................................................}4
AC ELECTRICAL CHARACTERISTICS ^{...........................................................}5
TIMING CHART ^{.............................................................................................}5
FUNCTIONAL DESCRIPTION^{.........................................................................}6
1. Addressing^{.................................................................................................}6
2. Functions of Registers ^{...................................................................................}7
3. Functions of Counters ^{..................................................................................}15
USAGE^{........................................................................................................}17
1. Reading and Writing Operations ^{......................................................................}17
2. Handling of CE Pin^{......................................................................................}18
3. Configuration of Oscillatory Circuit^{....................................................................}19
4. Adjustment of Oscillation Frequencies ^{...............................................................}20
5. Interrupts ^{.................................................................................................}22
6. Timer^{......................................................................................................}23
7. Detection of Stop of Oscillation^{........................................................................}24
8. Typical Power Supply Circuit^{...........................................................................}25
9. Typical Connection between RP/RF/RS5C62 and CPU ^{...........................................}26
10. Typical Characteristics^{..................................................................................}27
11. Typical Software-controlled Processes ^{...............................................................}29