Actual size

Real time clock module

Block diagram

Overview

Control 1

Seconds

Minutes

Hours

Days

Month / Century

Control 2

Weekdays

Years

Minutes Alarm

Hour Alarm

Day Alarm

Weekday Alarm

Timer Control

CLKOUT frequency

Timer

00

0F

OUTPUT

CONTROL

CONTROL

LOGIC

POR

OSC

32.768 kHz

CRYSTAL

CLKOUT

CLKOE

DIVIDER

Voltage Detector

ADDRESS

REGISTER

I

INTERFACE

/ INT

SCL

SDA

Interface Type

•I

 Low Timekeeper voltage range

•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

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.

Pin Function

Terminal connection

/External dimensions

(Unit

׃

mm)



Signal Name Input/Output

Function

SCL

Input

Serial clock input pin.

SDA

Bi-directional Data input and output pin.

CLKOUT

Output

CLKOE

Input

32.768

kHzclock output pin with the

output control function. (C-MOS)

CLKOE pin control the condition of

CLKOUT with FE-bit, etc.

CLKOE pin

input

FE

bit

CLKOUT pin

output

1

Output

(C-MOS)

HIGH

0

OFF

(LOW)

1

OFF

(LOW)

LOW

0

OFF

(LOW)

/INT

Output

Interrupt output (

N-ch open drain)

-

Connected to a positive power supply.

GND

-

Connected to a ground.



RTC

8564JE

1. N.C.

20. N.C.

2. N.C.

19. N.C.

3. CLKOE

18. N.C.

17. N.C.

5. CLKOUT

16. N.C.

6. SCL

15. N.C.

7. SDA

14. N.C.

8. (

GND)

13. N.C.

9. GND

12. N.C.

10. /

INT

5.4

11. N.C.

VSOJ20 pin



RTC

8564NB

1. /

INT

22.

N.C.

2. GND

21.

N.C.

3. (

GND)

20.

N.C.

4. N.C.

19.

N.C.

5. SDA

18.

N.C.

6. SCL

17.

N.C.

7. CLKOUT

16.

N.C.

15.

N.C.

9. CLKOE

14.

N.C.

10. N.C.

13.



11. N.C.

4.8

12.



SON22 pin

RX8564LC

1. N.C.

12.

N.C.

2. N.C.

11.

CLKOE

3. N.C.

10.

4. N.C.

9. CLKOUT

5. /

INT

8. SCL

6. GND

2.4

2.8

7. SDA

VSOJ

12pin

The metal case inside of the molding compound may be exposed on the top or bottom of this product.

This purely cosmetic and does not have any effect on quality, reliability or electrical specs.

Specifications (characteristics)

 Refer to application manual for details.

Item

Symbol

Conditions

Min.

Typ. Max. Unit

Current

Consumtion

CLKOE

=GND

CLKOUT

;

output OFF

(LOW)



=

5V

-

330

800

nA



=

3V

-

275

700

CLKOE

CLKOUT

;

32.768

kHz output ON

(Output=OPEN ;

CL

=0pF)



=

5V

-

2.5

3.4

A



=

3V

-

1.5

2.2

RTC-8564JE

RTC-8564NB

Low current consumption

RX - 8564 LC

Built in frequency adjusted 32.768 kHz crystal unit.

Interface Type

׃

kHz)

Operating voltage range

׃

1.8

Vto5.5V

Timekeeper voltage range

׃

1.0

Vto5.5V/-20C to +70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 I

Product Number (Please contact us)

RTC-8564JE : Q41856471000100

RTC-8564NB : Q41856492000200

RX-8564LC : Q418564C2xxxx00

RX-8564LC



Recommended Operating Conditions

Item

Symbol

Conditions

Min.

Typ. Max. Unit

Power voltage

-

1.8

3.0

5.5

V

Clock voltage

-

3.0

5.5

V

Operating

temperature

-

-40

+25

+85

°C



Low voltage detection

Item

Symbol

Conditions

Typ. Max. Unit

Low voltage

detection

JE,NB

Ta

=-20C+70C

0.9

1.0

V

Ta

=-40C+85C

0.9

1.1

V

LC

Ta

=-20C+70C

0.9

1.2

V

Ta

=-40C+85C

0.9

1.3

V



Frequency characteristics

Item

Symbol

Conditions

Rating

Unit

Frequency

tolerance

f/f

Ta

=+25°C

=3.0V

B: 523*

* Please ask for tighter tolerance. (Equivalent to 1 minute of monthly deviation)

*Stop using the glue

Any glue must never use it after soldering LC-package to a circuit board.This product has glass on the back side of a package.When glue invasions

between circuit board side and glass side, then glass cracks by thermal expansion of glue.In this case a crystal oscillation stops.Consider glue

abolition or glue do not touch to LC-package