Real time clock module
Epson Toyocom
Product Number (Please contact us)
RTC-8564JE : Q41856471000100
RTC-8564NB : Q41856491000200
RX-8564LC : Q418564C2xxxx00
Low current consumption
I2C-Bus INTERFACE REAL TIME CLOCK MODULE
RTC - 8564 JE / NB
RX - 8564 LC
•Built in frequency adjusted 32.768 kHz crystal unit.
•Interface Type
׃I2C-Bus Interface (400 kHz)
•Operating voltage range
8.1 ׃V to 5.5 V
•Timekeeper voltage range
0.1 ׃V to 5.5 V / -20 °C to +70 °C
•Low backup current
572 ׃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
Actual size
RTC-8564JE
RX-8564LC
RTC-8564NB
* The I2C-Bus is a trademark of NXP Semiconductors
Block diagram
Overview
• Interface Type
32.768 kHz
CRYSTAL
OSC
Voltage Detector
•I2C-Bus Interface. ( Hi-speed bus specifications 400 kHz )
2
∗ I C-Bus slave address : read A3h and write A2h
00
Control 1
Control 2
• Low Timekeeper voltage range
Seconds
•1.0 V to 5.5 V / Ta = -20 °C to +70 °C
•1.1 V to 5.5 V / Ta = -40 °C to +85 °C
Minutes
Hours
CLKOUT
CLKOE
OUTPUT
Days
DIVIDER
CONTROL
• 32.768 kHz frequency output function
Weekdays
•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>
Month / Century
Years
/ INT
Minutes Alarm
CONTROL
Hour Alarm
LOGIC
2
SCL
SDA
• The various interrupt function
Day Alarm
I C-BUS
•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.
Weekday Alarm
INTERFACE
CLKOUT frequency
ADDRESS
Timer Control
REGISTER
Terminal connection / External dimensions
Output
CLKOE pin
input
CLKOE
HIGH
Input
LOW
FE
bit
1
0
1
0
VDD
-
GND
18.
N.C.
3.
( GND )
17.
N.C.
4.
N.C.
5.
SDA
CLKOUT
16.
N.C.
15.
N.C.
( GND )
9.
5.4
SDA
8.
GND
10.
14.
6.0 ± 0.2
/ INT
N.C.
11.
N.C.
17.
CLKOUT
8.
VDD
9.
1.3 ± 0.1
CLKOE
10.
11.
N.C.
5.0 ± 0.2
VSOJ − 20 pin
Connected to a ground.
( N-ch open drain )
/ INT
6.
N.C.
−
GND
Low voltage
detection
JE,NB
VLOW
LC
CLKOE
VDD
2.4
9.
SCL
7.
2.8
CLKOUT
8.
SDA
VSOJ − 12pin
Metal may be exposed on the top or bottom of this product. This will not affect any quality , reliability or electrical spec.
∗ Refer to application manual for details.
Current consumption characteristics
Min. Typ.
1.8
3.0
VLOW 3.0
-40
+25
Max.
5.5
5.5
Unit
V
V
+85
°C
Item
Symbol
Condition
Condition
Ta = -20 °C ∼ +70 °C
Ta = -40 °C ∼ +85 °C
Ta = -20 °C ∼ +70 °C
Ta = -40 °C ∼ +85 °C
Typ.
0.9
0.9
0.9
0.9
Max.
1.0
1.1
1.2
1.3
Unit
V
V
V
V
Ta = −40 °C to +85 °C
Typ.
Max.
VDD
=5V
330
800
VDD
output OFF ( LOW )
=3V
275
700
VDD
=5V
2.5
3.4
32.768 kHz output ON VDD
(Output=OPEN ;
=3V
CL = 0 pF)
1.5
2.2
fSCL = 0 Hz
IBK
CLKOE = GND
Min.
Current
Consumtion
fSCL = 0 Hz
CLKOE = VDD
I32k
Frequency characteristics
Item
Symbol
Condition
Rating
Unit
Ta = +25 °C
Frequency
× 10−6
Δf/f
5 ± 23 *
tolerance
VDD = 3.0 V
* Please ask for tighter tolerance. (Equivalent to 1 minute of monthly deviation)
http://www.epsontoyocom.co.jp
Unit
nA
CLKOUT ;
Low voltage detection
Item
Symbol
N.C.
11.
10.
−
SON − 22 pin
Specifications (characteristics)
Recommended Operating Conditions
Item
Symbol
Condition
Power voltage
VDD
Clock voltage
VCLK
Operating
TOPR
temperature
14.
13.
12.
N.C.
N.C.
5.
N.C.
N.C.
4.
N.C.
15.
3.
12.
N.C.
16.
4.8
N.C.
N.C.
N.C.
N.C.
2.
N.C.
19.
1.
N.C.
20.
SCL
7.
N.C.
N.C.
21.
18.
6.
N.C.
13.
12.
1.5 Max.
22.
3.6
/ INT
2.
SCL
7.
Connected to a positive power supply.
GND
Interrupt output
1.
N.C.
6.
CLKOUT pin
output
( C-MOS )
( LOW )
( LOW )
( LOW )
Output
VDD
N.C.
19.
5.
Output
OFF
OFF
OFF
/INT
CLKOE
4.
20.
1.2 Max.
CLKOUT
N.C.
3.
32.768 kHz clock output pin with the
output control function. (C-MOS)
CLKOE pin control the condition of
CLKOUT with FE-bit, etc.
N.C.
2.
6.3 Max.
1.
Bi-directional Data input and output pin.
(Unit׃mm)
RX − 8564 LC
RTC − 8564 NB
0.5
Function
Serial clock input pin.
7.0 ± 0.3
SDA
Input
0.65
Signal Name Input/Output
RTC − 8564 JE
0.5
Pin Function
SCL
0F
Timer
POR
μA
CLKOUT ;
