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RX
8564 LC
Low power consumption / Small size thin model package
2
I
C-Bus Interface Real Time Clock Module
RX
8564 LC
Built in frequency adjusted 32.768 kHz crystal unit.
Interface type
Wide operating voltage range
Wide timekeeper voltage range
Low backup current
32.768-kHz clock frequency output
Real-time clock function
Clock/calendar function, auto leap year correction function, alarm interrupt function, etc.
1. Overview
This module is an I
In addition to a calendar (year, month, day, weekday, hour, minute, second) function and a clock counter
function, this module's real-time clock functions include an alarm function and a fixed-cycle timer interrupt
function.
The devices in this module are fabricated via a C-MOS process for low current consumption, which enables
long-term battery back-up.
All of these many functions are implemented in a compact package, which makes it suitable for various
kinds of mobile telephones, handy terminals and other small electronic devices.
2. Block diagram
CLKOUT
CLKOE
/ INT
SCL
SDA
: 400 kHz two-wire I
: 1.8 V to 5.5 V
: 1.0 V to 5.5 V ( at Ta = +25 C )
( Typ. )
: 275 nA
: C-MOS output with output control
2
C bus interface real-time clock that has bult-in 32.768-kHz crystal oscillator.
32.768 kHz
CRYSTAL
OSC
OUTPUT
CONTROL
2
I
C-BUS
INTERFACE
POR
2
C-bus interface
/ 3 V
2
The I
C-BUS is a trademark of PHILIPS ELECTRONICS N.V.
Voltage Detector
DIVIDER
CONTROL
LOGIC
ADDRESS
REGISTER
Page
1
Control 1
00
Control 2
Seconds
Minutes
Hours
Days
Weekdays
Month / Century
Years
Minutes Alarm
Hour Alarm
Day Alarm
Weekday Alarm
CLKOUT frequency
Timer Control
Timer
0F
ETM12E-01
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