Real time clock module
Built-in EEPROM
SERIAL-INTER FACE REA L TIME C LOCK MODULE
RTC - 9701 JE
•
Built in frequency adjusted 32.768
•
Interface Type
•
Operating voltage range
•
Wide Timekeeper voltage range
•
Include EEPROM
•
Various detection Functions
kHz crystal unit.
:
Serial interface in 4 lines form.
:
2.7 V to 3.6 V
:
1.8 V to 5.5 V
:
4 kbit ( 256
×
16 bit )
:
Ex.Power supply voltage
Actual size
monitoring function
•
32.768 kHz frequency output function
:
C-MOS output With Control Pin
•
The various functions include full calendar, alarm, timer.
•
Lead(Pb)-free : Contains high melting temperature type solder (Pb85 %)
exempted by RoHS directive.
Block diagram
Control Line
32.768 kHz
OSC
DIVIDER
CLOCK
and
CALENDAR
Overview
•
Include EEPROM
•4 kbit ( 256
×
16 bit ) User Memory.
FOUT
FOE
/ TIRQ
/ AIRQ
V
DD
V
DD2
VEX
GND
DO
DI
CLK
CE
BUS
INTERFACE
CIRCUIT
Vi
Vo
•
The various Power supply voltage monitoring function
•VEX input pin : Power supply voltage monitoring function
•VDD2 pin : Low voltage detection function
•Oscillation circuit : Low voltage detection function
FOUT
CONTROLLER
INTERRUPTS
CONTROLLER
TIMER
REGISTER
ALARM
REGISTER
CONTROL
REGISTER
•
Interface Type
VLF
•Serial interface in 4 lines form.
∗
It is possible to make it to 3 lines by
wired-OR connecting DI and DO pins.
•
32.768 kHz frequency output function
•FOUT pin output (C-MOS output)
•FOE pin enables output on/off control.
EEPROM
256
×
16 bit
•
The various interrupt function
•Alarm interrupt function,
Time-update interrupt function, timer function.
Pin Function
Signal Name Input / Output
V
DD
V
DD2
VEX
CE
CLK
DI
DO
FOUT
FOE
/ AIRQ
/ TIRQ
GND
-
-
-
Input
Input
Input
Output
Output
Input
Output
Output
-
Function
Connected to a positive power supply.
RTC power.
∗
Always supply the power irrespective of action situation to this terminal.
External voltage detection input pin
The chip enabled input pin. ( built -in pull-down resistance )
The shift clock input pin for serial data transfer.
The data input pin for serial data transfer.
The data output pin for serial data transfer.
This pin outputs the reference clock signal at 32.768 kHz ( CMOS output ).
High impedance at the time of output off.
The input pin for the FOUT output control.
Open drain output pin for alarm and time update interrupts.
Open drain output pin for timer interrpt.
Connected to a ground.
Terminal connection / External dimensions
RTC
−
9701 JE
2.
3.
4.
5.
6.
7.
8.
9.
10.
VEX
FOE
/ AIRQ
/ TIRQ
CE
CLK
DI
DO
V
DD
6.0
±
0.2
5.4
1.5
Max .
0.65
( Unit:mm )
1.
V
DD2
20.
19.
7.0
±
0.3
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
GND
GND
FOUT
18.
17.
16.
15.
14.
13.
12.
11.
VSOJ
−
20 pin
Metal m ay be exposed on the top or bottom of this product.
This will not affect any quality, reliability or electrical spec
∗
If not specifically indicated, V
DD
= 2.7 V to 3.6 V , V
DD2
= 1.8 V to 5.5 V , Ta =
−40 °C
to +85
°C
Specifications (characteristics)
Recommended Operating Conditions
Item
Symbol
V
DD
V
DD2
V
EX
T
OPR
Condition
V
DD
pin
V
DD2
pin
V
EX
pin
-
Min.
2.7
1.8
1.4
-40
∗
Refer to application manual for details.
EEPROM Memory characteristics
Typ.
3.0
3.0
+25
Max.
3.6
5.5
5.5
+85
Unit
V
V
V
°C
Item
Memory contents
Program/Erase cycle
Current consumption (write to EEPROM)
Access time
CLK clock cycle V
DD
= 3.0 V
±
0.3 V
CLK clock cycle V
DD
= 3.3 V
±
0.3 V
Min.
Typ.
Max.
Unit
-
times
mA
ms
ns
ns
Power voltage
Clock voltage
Analog voltage
Operating
temperature
Frequency characteristics
Item
Frequency
tolerance
Symbol
∆
f/f
Condition
Ta = +25 °C
V
DD
= 3.0 V
Rating
5
±
23
∗
Unit
×
10
−
6
4 kbit ( 256
×
16 bit )
5
10
1
3
5
10
1000
900
AC characteristics
Item
CLK clock cycle
Min.
500
Typ.
Max.
Unit
ns
∗
Please ask for tighter tolerance. (
Equivalent to 1 minute of monthly deviation)
110
http://www.epsontoyocom.co.jp
End to End EPSON TOYOCOM
The development of our ubiquitous network society has caused
a diversification of applications and has increased the demand for
high-level quartz devices in terms of quality, quantity, and
function.
The Quartz Device Operations Division of SEIKO EPSON
CORPORATION (EPSON)and TOYO COMMUNICATION
EQUIPMENT CO.,LTD.(TOYOCOM) were integrated on October
1,2005 to establish a new company, EPSON TOYOCOM
CORPORATION, to meet these market and customer demands.
Each company contributes its own strength; EPSON holds a
strong presence in consumer products and TOYOCOM is strong
in industrial products. The consolidation of these two companies
in a new company that provides advanced expertise with a wide
range of products for terminals and infrastructure to our
customers.
Quartz device have become crucial in the network environment
where products are increasingly intended for broadband,
ubiquitous applications and where various types of terminals can
transfer information almost immediately via LAN and WAN on a
global scale. EPSON TOYOCOM CORPORATION addresses
every single aspect within a network environment. The new
corporation offers “end-to-end” solutions to problems arising with
products for consumer use, such as core network systems and
automotive systems.
PROMOTION OF ENVIRONMENTAL MANAGEMENT SYSTEM
CONFORMING INTERNATIONAL STANDARD
At EPSON TOYOCOM, 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.
In May 2001, all of our major manufacturing and non-manufacturing sites, in Japan and overseas, completed the acquisition of ISO 14001 certification.
In the future, new group companies will be expected to acquire the certification around the third year of operations.
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.
WORKING FOR HIGH QUALITY
EPSON TOYOCOM quickly began working to aquire company-wide ISO 9000 series certification, and has acquired ISO 9001 or ISO 9002 certification
with all targeted products manufactured in Japanese and overseas plants.
The Quartz Device Operations Division (Ina Japan,EPM and SZE) have acquired QS-9000 certification, which are of higher Level.
Also QS-9000 and TS 16949 certification, which is of higher level, has been acquired.
QS-9000 is an enhanced standard for quality
assurance systems formulated by leading
U.S.automobile manufacturers based on
the international ISO 9000 series.
ISO/TS 16949 is a global standard based on
QS-9000, a severe standard corresponding to
the requirements from automobile industry.
Notice
●The
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 EPSON TOYOCOM.
●The
information, applied circuit, program, usage etc., written in this material is just for reference. EPSON TOYOCOM does not assume any liability for
the occurrence of infringing any patent or copyright of a third party. This material does not authorize the licensing for any patent or intellectual
copyrights.
●Any
product described in this material may contain technology or the subject relating to strategic products under the control of the Foreign
Exchange and Foreign Trade Law of Japan and may require an export licence from the Ministry of International Trade and industry or other
approval from another government agency.
●These
products are intended for general use in electronic equipment. When using them in specific applications that require extremely high reliability
such as applications stated below, it is required to obtain the permission from EPSON TOYOCOM 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.
●
In this new crystal master for EPSON TOYOCOM, product code and marking will still remain as previously identified prior to the merger.
Due to the on going strategy of gradual unification of part numbers, please review product code and marking as they will change during the course of
the coming months.
We apologize for the inconvenience, but we will eventually have a unified part numbering system for Epson Toyocom which will be user friendly.
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