SEIKO EPSON CORPORATION
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4095 mrhut
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CE The plup enable rhpul pm, ' CE 5: e: .1: O
CLK The Shit] dock input pin tor senel data lranslen 2 cm 1: Z :
FOUT The pin outputs the relerence clock signal. 5 m, E a
( CMOS output ) x ==
TEST Use by the menulacture lpr |esling ‘ "C 5..
( Do not connect externaliy, RXJBDSSA pnly J 5 TEsl %
5
VDD , Connected to a posfllve power supply vm Q 3
FOE The input pm tor the FOUT pulput control 7 m n .1
[
EVIN External event inpul
/ INT Output Interrupt output (Nrch open drain). 5°" “9‘"
GND , Connected to a ground r». war when. ml"- Maudie
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”0”” ' (Do {ml connect exiemaH ,) 9
[)0 Output The data output pin lpr serial data lransler.
D i input The data input pin tor serrei da|a transler
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Real time clock module
Actual size
Block diagram Overview
High Stability
UA ± 3.4 x 10-6 / -40 ºC to +85 ºC
( Equivalent to ±9 seconds of month deviation )
UB ± 5.0 x 10-6 / -40 ºC to +85 ºC
( Equivalent to ±13 seconds of month deviation )
UC ± 5.0 x 10-6 / -30 ºC to +70 ºC
AA (+5 ± 5.0) x 10-6 / +25 ºC
High Resolution: 1/100s Time register with capture buffer
32.768 kHz frequency output function
FOUT pin output (C-MOS output), CL=30 pF
Output selectable: 32.768 kHz, 1024 Hz, 1 Hz
The various interrupt
Timer Function can be set between 1/ 4096 second and
4095 minutes.
Alarm Function can be set to day of week, day, hour, or minute.
EVIN input.
Time synchronize function with 1PPS signal input
Register compatibility: upper compatible with RX-4801.
*It is possible to use it by the terminal connection as
32.768 kHz-DTCXO.
Pin Function Terminal connection
/
External dimensions
(
Uni
t
:mm
)
RX4803SA
1. CE 14. DI
2. CLK 13. DO
3. FOUT 12. T2(VPP)
4. N.C. 11. GND
5. TEST 10. /INT
6. VDD 9. EVIN
7. FOE
10.1 0.2
5.0
7.40.2
3.20.1
1.27
8. N.C.
SOP14 pin
RX4803LC
1. N.C. 12. EVIN
2. FOE 11. /INT
3. VDD 10. GND
4. FOUT 9. T2(Vpp)
5. CLK 8. DO
6. CE
0.5
2.4
3.6
1.2Max.
2.8 7. DI
VSOJ12pin
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.
S
p
ecifications
(
characteristics
)
Refer to a
pp
lication manual for details.
REAL TIME CLOCK MODULE (SPI-Bus)
Built-in 32.768 kHz-DTCXO, High Stability
RX - 4803 SA/LC
Built in frequency adjusted 32.768 kHz crystal unit and DTCXO.
1/100s resolution Time register
Interface Type : 4-wire serial interface
Interface voltage range : 1.6 V to 5.5 V
Temp. compensated voltage range : 2.2 V to 5.5 V
Clock supply voltage range : 1.6 V to 5.5 V
Selectable clock output (32.768 kHz, 1024 Hz, 1 Hz)
The various functions include full calendar, alarm, timer, EVIN input.
Epson prepared Linux driver for development.
(http://www5.epsondevice.com/en/information/support/linux_rtc/)
The registered trademark Linux® is used pursuant to a sublicense from LMI(Linux Mark Institute)
Signal Name I / O Function
CE input The chip enable input pin.
CLK input The shift clock input pin for serial data transfer.
FOUT Output
The pin outputs the reference clock signal.
( CMOS output )
TEST input
Use by the manufacture for testing.
( Do not connect externally. RX-4803SA only.)
VDD - Connected to a positive power suppl
y
FOE input The input pin for the FOUT output control.
EVIN input External event input.
/ INT Output Interrupt output (N-ch. open drain).
GND - Connected to a ground
T2(VPP) -
Use by the manufacture for testing.
( Do not connect externally.)
DO Output The data output pin for serial data transfer.
D I input The data input pin for serial data transfe
r
.
Electrical Characteristics
Item Symbol Conditions Min. Typ. Max. Unit
Interface voltage VDD Interface voltage 1.6 3.0 5.5 V
Temp. compensated Voltage VTEM Temp. compensated voltage 2.2 3.0 5.5 V
Clock supply voltage VCLK - 1.6 3.0 5.5 V
Operating temperature TOPR No condensation -40 +25 +85 ºC
Stability f/f
UA Ta= -40 ºC to +85 ºC ±3.41
10-6
UB Ta=-40 ºC to +85 ºC
±5.02
UC Ta= -30 ºC to +70 ºC
AA Ta =+25 ºC 5 ± 5.03
Current consumption (1) IDD1 Backup Mode
FOE = GND,
/INT = VDD
FOUT output : OFF
VDD = 5V - 0.75 3.4
A
Current consumption (2) IDD2 VDD = 3V - 0.75 2.1
1) Equivalent to ±9 seconds of month deviation. 2)Equivalent to ±13 seconds of month deviation.
3)Equivalent to ±13 seconds of month deviation. ( excluding offset )
Product Number (Please contact us)
RX-4803SA : X1B000131xxxx00
RX-4803LC : X1B000122xxxx00
RX
-
4803LC UB :
X1B0001
220002
00
RX-4803SA RX-4803LC
32.768 kHz-DTCXO Frequency temperature characteristics (Example)
Frequency temperature characteristics
-30
-25
-20
-15
-10
-5
0
5
10
-45 -35 -25 -15 -5 5 15 25 35 45 55 65 75 85
Temperature (ºC)
Frequency tolerance ( ×10-
6
)
Tuning fork X'tal
32.768 kHz DTCXO
32kHz
DTCXO
32.768 kHz
EVIN
CLOCK
and
CALENDAR
TIMER
REGISTER
ALARM
REGISTER
FOUT
CONTROLLER
SYSTEM
CONTROLLER
and
CONTROL
REGISTER
DIVIDER
INTERRUPT
CONTROLLER
INTERFACE
CIRCUIT
FOUT
FOE
/ INT
CLK
DO
D I
CE
*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
> Explanation ol the mark that are usiml it for the Catalan
nous
fimw:
fi
(E
PROMOTION OF ENVIRONMENTAL MANAGEMENT SYSTEM
CONFORMING TO INTERNATIONAL STANDARDS
At Seiko Epson, all environmental initiatives operate under the
Plan-Do-Check-Action (PDCA) cycle designed to achieve continuous
improvements. The environmental management system (EMS)
operates under the ISO 14001 environmental management standard.
All of our major manufacturing and non-manufacturing sites, in
Japan and overseas, completed the acquisition of ISO 14001
certification.
WORKING FOR HIGH QUALITY
In order provide high quality and reliable products and services
than meet customer needs,
Seiko Epson made early efforts towards obtaining ISO9000 series
certification and has acquired ISO9001 for all business
establishments in Japan and abroad. We have also acquired ISO/TS
16949 certification that is requested strongly by major automotive
manufacturers as standard.
►Explanation of the mark that are using it for the catalog
►Pb free.
►Complies with EU RoHS directive.
*About the products without the Pb-free mark.
Contains Pb in products exempted by EU RoHS directive.
(Contains Pb in sealing glass, high melting temperature type solder or other.)
►Designed for automotive applications such as Car Multimedia, Body Electronics, Remote Keyless Entry etc.
►Designed for automotive applications related to driving safety (Engine Control Unit, Air Bag, ESC etc ).
Seiko Epson Corporation
Notice
• This material is subject to change without notice.
• Any part of this material may not be reproduced or duplicated in any form or any means without the written permission of Seiko Epson.
• The information about applied data, circuitry, software, usage, etc. written in this material is intended for reference only. Seiko Epson
does not assume any liability for the occurrence of customer damage or infringing on any patent or copyright of a third party. This
material does not authorize the licensing for any patent or intellectual copyrights.
• When exporting the products or technology described in this material, you should comply with the applicable export control laws and
regulations and follow the procedures required by such laws and regulations.
• You are requested not to use the products (and any technical information furnished, if any) for the development and/or manufacture of
weapon of mass destruction or for other military purposes. You are also requested that you would not make the products available to
any third party who may use the products for such prohibited purposes.
• These products are intended for general use in electronic equipment. When using them in specific applications that require extremely
high reliability, such as the applications stated below, you must obtain permission from Seiko Epson in advance.
/ Space equipment (artificial satellites, rockets, etc.) / Transportation vehicles and related (automobiles, aircraft, trains,
vessels, etc.) / Medical instruments to sustain life / Submarine transmitters / Power stations and related / Fire work equipment
and security equipment / traffic control equipment / and others requiring equivalent reliability.
• All brands or product names mentioned herein are trademarks and/or registered trademarks of their respective.
ISO 14000 is an international standard for environmental
management that was established by the International
Standards Organization in 1996 against the background of
growing concern regarding global warming, destruction of
the ozone layer, and global deforestation.
ISO/TS16949 is the international standard that added the
sector-specific supplemental requirements for automotive
industry based on ISO9001.
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