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RX-8564LC fiches techniques PDF

EPSON Electronics - REAL TIME CLOCK MODULE

Numéro de référence RX-8564LC
Description REAL TIME CLOCK MODULE
Fabricant EPSON Electronics 
Logo EPSON Electronics 





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RX-8564LC fiche technique
Real time clock module
Low current consumption /
Small size, low profile model package
I2C-Bus INTERFACE REAL TIME CLOCK MODULE
RX - 8564 LC
Built in frequency adjusted 32.768 kHz crystal unit.
Interface Type
: I2C-Bus Interface (400 kHz)
Operating voltage range
: 1.8 V to 5.5 V
Wide Timekeeper voltage range : 1.0 V to 5.5 V / Ta = +25 °C
Low backup current
: 275 nA / 3.0 V(Typ.)
32.768 kHz frequency output function: C-MOS output With Control Pin
The various functions include full calendar, alarm, timer, and
power supply voltage monitoring function.
* The I2C-Bus is a trademark of Philips Electronics N.V.
Actual size
Block diagram
32.768 kHz
CRYSTAL
OSC
Voltage Detector
CLKOUT
CLKOE
OUTPUT
CONTROL
DIVIDER
/ INT
SCL
SDA
I2C-BUS
INTERFACE
POR
CONTROL
LOGIC
ADDRESS
REGISTER
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
Overview
Interface Type
• I2C hi-speed bus specifications. ( 400 kHz )
I2C-Bus slave address : read A3h and write A2h
Low Timekeeper voltage
• 1.0 V to 5.5 V / Ta = +25 °C
• 1.3 V to 5.5 V / Ta = 40 °C to +85 °C
32.768 kHz frequency output function
• CLKOUT pin output (C-MOS output ), CL=30 pF
• CLKOE pin enables output on/off control.
• Output selectable <32.768 kHz, 1024 Hz, 32 Hz, 1 Hz>
The various interrupt function
• Timer function can be set up between 1/4096 second and 255 minutes.
• Alarm function can be set to any combination of day of
week, hour, or minute.
Functions are compatible with RTC-8564 JE / NB series.
Pin Function
Signal Name
SCL
SDA
CLKOUT
CLKOE
/INT
VDD
GND
Input / Output
Input
Bi-directional
Output
Input
Function
Serial clock input pin
Data input and output pin
32.768 kHz clock output pin with the output control function. (C-MOS)
CLKOE pin control the condition of CLKOUT pin with FE-bit, FD1-bit,
FD0-bit.
C LK O E pin
in p u t
H IG H
LOW
FE C LK O U T pin
b it o u tp ut
1 O utpu t ( C -M O S )
0
O FF
( LO W )
1
O FF
( LO W )
0
O FF
( LO W )
Output
-
-
Interrupt output ( N-ch open drain )
Connected to a positive power supply.
Connected to a ground.
Terminal connection / External dimensions
RX 8564 LC
(Unit:mm)
1. N.C.
12. N.C.
2. N.C.
11. CLKOE
3. N.C.
4. N.C.
10. VDD
2.4 9. CLKOUT
5. / INT
8. SCL
6. GND 2.8 7. SDA
VSOJ 12pin
Specifications (characteristics)
! Recommended Operating Conditions
Item
Power voltage
Clock voltage
Operating
temperature
Symbol
VDD
VCLK
TOPR
Condition
-
-
-
Min. Typ. Max. Unit
1.8 3.0 5.5 V
VLOW 3.0 5.5 V
-40 +25 +85 °C
! Low voltage detection
Item
Low voltage
detection
Symbol
Condition
Min. Typ. Max. Unit
VLOW
Ta = +25°C
Ta = -20 °C to +70 °C
Ta = -40 °C to +85 °C
0.9 1.0 V
0.9 1.2 V
0.9 1.3 V
! Frequency characteristics
Item
Frequency
tolerance
Symbol
Condition
f/f
Ta = +25 °C
VDD = 3.0 V
Rating
5 ± 23 *
* Please ask for tighter tolerance. (Equivalent to 1 minute of monthly deviation)
Unit
× 106
Refer to application manual for details.
! DC characteristics
Ta = -40 °C to +85 °C
Item Symbol
Condition
Min. Typ. Max. Unit
fSCL = 0 Hz
VDD
=5V
CLKOE = GND
IBK
CLKOUT ;
VDD
output OFF ( LOW ) = 3 V
Current
Consumption
fSCL = 0 Hz
VDD
CLKOE = VDD
=5V
330 800
nA
275 700
2.5 3.4
I32k CLKOUT ;
32.768 kHz Output ON VDD
(Output=OPEN ;
=3V
CL = 0 pF)
µA
1.5 2.2
98 http://www.epsontoyocom.co.jp

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