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Epson Company

RTC-4701NB Datasheet Preview

RTC-4701NB Datasheet

SERIAL-INTERFACE REAL TIME CLOCK MODULE

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Real time clock module
Epson Toyocom
Built-in Temperature Sensor
SERIAL-INTERFACE REAL TIME CLOCK MODULE
RTC - 4701 JE / NB
Built in frequency adjusted 32.768 kHz crystal unit.
Interface Type
: 3-wire serial interface
Operating voltage range
: 1.6 V to 5.5 V
Wide Timekeeper voltage range : 1.6 V to 5.5 V
Built-in temperature sensor
: Detects temperature.
Converts output to analog voltage
32.768 kHz frequency output function: C-MOS output With Control Pin
Function of time and calendar, the various interrupt function etc.
Actual size
RTC-4701JE
Product Number (Please contact us)
RTC-4701JE : Q41470171000200
RTC-4701NB: Q41470191000200
RTC-4701NB
Block diagram
32.768 kHz
VT EMP
/ SOFF
OSC
Te mpe rat ure
Sensor
DI VIDE R
FOUT
FOE
/ AIRQ
/ TIRQ
DATA
CLK
CE
FOUT
CONTROLLER
I NTERRUP TS
CONTROLLER
BUS
I NTERFA CE
CI RCUIT
Control Line
CLOCK
and
CALENDAR
TIMER
REGISTER
ALARM
REGISTER
CONTROL
REGISTER
and
SYSTEM
CONTROLLER
Overview
Built-in temperature sensor
• Diode temperature sensor (analog voltage output)
temperature sensor operating voltage : 2.7 V to 5.5 V
temperature sensor tolerance : ± 5 °C ( Ta = +25 °C )
voltage output (analog): 7.6 mV / °C Typ.
32.768 kHz frequency output function
• FOUT pin output (C-MOS output), CL=30 pF
• FOE pin enables output on/off control.
The various interrupt function
• 12 bit additional counter. ( to 4095 count )
• Timer function can be set up between
1/4096 second and 255 minutes.
• Alarm function can be set to day of week, hour, or minute.
Pin Function
Signal
Input /
Name Output
Function
CE
Input
The chip enabled input pin.
(Built -in pull-down resistance)
CLK
Input The shift clock input pin for serial data transfer.
DATA
Bi-directional
The data input / output pin for serial data
transfer.
FOUT Output
FOE
Input
FOE input
HIGH
L OW
FOUT output
32.768 kHz output C-MOS output
output OFF
Hi - z
VTEMP
/SOFF
/ AIRQ
/ TIRQ
VDD
GND
Output
Input
Output
Output
-
-
The voltage output pin for the
temperature sensor ( analog ).
The input pin for the temperature sensor control.
Output 1 pin ( N-ch open drain )
Output 2 pin ( N-ch open drain )
Connected to a positive power supply.
Connected to a ground.
Terminal connection / External dimensions
(Unit:mm)
1. VDD
2. FOUT
3. CE
4. / AIRQ
5. / TIRQ
6. CLK
7. DATA
8. FOE
9. VTEMP
10. / SOFF
RTC 4701 JE
20. N.C.
19. N.C.
18. N.C.
17. N.C.
16. N.C.
15. N.C.
5.4
14. N.C.
1.5 Max. 13. N.C.
12. N.C.
6.0 ± 0.2
11. GND
VSOJ 20 pin
1. GND
2. / SOFF
3. VTEMP
4. FOE
5. DATA
6. CLK
7. / TIRQ
8. / AIRQ
9. CE
10. FOUT
11. VDD
RTC 4701 NB
4 .8
5.0 ± 0.2
22.
21.
20.
19.
18.
17.
16.
15.
1.3 ± 0.1
14.
13.
12.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
SON 22 pin
Metal may be exposed on the top or bottom of this product. This w ill not affect any quality, reliability or electrical spec.
Temperature sensor characteristics
Item
Temperature
output voltage
Output tolerance
Temperature
sensitivity
Linearity
Temperature
detection range
Output resistance
If not specifically indicated, GND = 0 V , VDD = 2.7 V to 5.5 V , Ta = 40 °C to +85 °C
Symbol
Condition
Min. Typ. Max. Unit
VTEMP
VTEMP pin, Ta = +25 °C
GND based output voltage
1.480
V
TACR Ta = +25 °C
± 5.0
°C
VSE -40 °C Ta +85 °C
-7.1 -7.6 -8.1 mV / °C
NL -40 °C Ta +85 °C
± 2.0
%
TSOP NL ≤ ± 2.0 %
40
+ 85
°C
RO
VTEMP pin, Ta = +25 °C
GND standard and VDD standard
1.0 3.0 k
Temperature sensitivity
Linearity
Output resistance ( Ro )
VSE = ( V ( +85 °C ) V ( 40 °C ) ) / 125 [ mV / °C ]
NL =
a
b
× 100 [ % ]
a : Maximum deviation between the measured value of
VTEMP and approximate straight line.
b : Difference between the measured values at
40 °C and +85 °C.
Ro =
V1
Ι1
[]
* Refer to application manual for details.
Output voltage
VTEMP[ V ]
a
V (40 °C )
Approximate
straight line
b
a
Measured
a
V(+85 °C )
Ta
40
0
Temperature
+85 [°C]
http://www.epsontoyocom.co.jp




Epson Company

RTC-4701NB Datasheet Preview

RTC-4701NB Datasheet

SERIAL-INTERFACE REAL TIME CLOCK MODULE

No Preview Available !

“QMEMS” EPSON TOYOCOM
In order to meet customer needs in a rapidly advancing digital,
broadband and ubiquitous society, we are committed to offering products
that are one step ahead of the market and a rank above the rest in quality.
To achieve our goals, we follow a “3D (three device) strategy” designed to
drive both horizontal and vertical growth. We will to grow our three device
categories of “Timing Devices”, ”Sensing Devices” and “Optical Devices”,
and expand vertical growth through a combination of products from these
categories.
A Quartz MEMS is any high added value quartz device that exploits the
characteristics of quartz crystal material but that is produced using MEMS
(micro-electro-mechanical system) processing technology.
Market needs are advancing faster than previously imagined toward
smaller, more stable crystal products, but we will stay ahead of the curve
by rolling out products that exceed market speed and quality
requirements. We want to further accelerate the 3D strategy by QMEMS.
Quartz devices 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 “Digital Convergence” solutions to problems
arising with products for consumer use, such as, core network systems
and automotive systems.
PROMOTION OF ENVIRONMENTAL MANAGEMENT SYSTEM
CONFORMING TO INTERNATIONAL STANDARDS
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.
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
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.
WORKING FOR HIGH QUALITY
In order provide high quality and reliable products and services than meet customer needs,
Epson Toyocom 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.
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 the automobile industry.
Explanation of the mark that are using it for the catalog
Pb free.
Complies with EU RoHS directive.
Pb free terminal designed. Contains Pb in products exempted by RoHS directive.
(Contains Pb in sealing glass, high melting temperature type solder or other.)
Complies with EU RoHS directive.
The products have been designed for high reliability applications such as Automotive.
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 Epson Toyocom.
The information, applied circuitry, programming, usage, etc., written in this material is intended for reference only. Epson Toyocom does not
assume any liability for the occurrence of infringing on 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 license from the Ministry of International Trade and Industry or other
approval from another government agency.
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 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 codes and markings will remain as previously identified prior to the merger.
Due to the on-going strategy of gradual unification of part numbers, please review product codes and markings, 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 that will be user friendly.


Part Number RTC-4701NB
Description SERIAL-INTERFACE REAL TIME CLOCK MODULE
Maker Epson Company
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