Real time clock module
Epson Toyocom
For Automotive
I
2
C-Bus INTERFACE REAL TIME CLOCK MODULE
RA - 8565 SA
•Built
in frequency adjusted 32.768 kHz crystal unit.
•Interface
Type
:
I
2
C-Bus Interface (400 kHz)
•Wide
operating voltage range
:
1.8 V to 5.5 V
•Wide
Timekeeper voltage range
:
1.7 V to 5.5 V
T
a
=
−40 °C
to +125
°C
•
Extended operating temperature range:
−40 °C
to +125
°C
•32.768
kHz frequency output function
:
N-ch Open drain output
With Control Pin
•The
various functions include full calendar, alarm, timer,etc
*
The I
2
C-Bus is a trademark of NXP Semiconductors
Actual size
Block diagram
32.768 kHz
CRYSTAL
OSC
Voltage Detector
Overview
•
Wide operating temperature range for automotive
!
−40 °C
to +125
°C
•
Clocking-status detection function
!
It can judge the validity of data after backup
operation return by a status of VL-bit.
•
32.768kHz frequency output function
!
CLKOUT pin output (N-ch Open Drain output )
!
Output frequency can be selected
as 32.768kHz, 1024Hz, 32Hz, or 1Hz.
•
The various interrupt function
!
Timer function can be set up between
1/4096 second and 255 minutes.
!
Alarm function can be set to day of week,
day, hour, or minute.
Control 1
Control 2
Seconds
Minutes
00
CLKOUT
CLKOE
Hours
OUTPUT
CONTROL
DIVIDER
Days
Weekdays
Month
Years
/ INT
SCL
SDA
I C-BUS
INTERFACE
2
CONTROL
LOGIC
Minutes Alarm
Hour Alarm
Day Alarm
Weekday Alarm
CLKOUT frequency
ADDRESS
REGISTER
POR
Timer Control
Timer
0F
Pin Function
Terminal connection / External dimensions
(Unit:mm)
RA
−
8565 SA
Terminal
SCL
SDA
CLKOUT
Directions
Input
Bi-directional
Output
Functions
Serial clock input.
Data input and output.
The CLKOUT pin is a clock output ( open drain output ) pin
with control output. ( Output frequency can be selected
as 32.768 kHz, 1024 Hz, 32 Hz, or 1 Hz. )
The CLKOE pin is an input pin used to control the output
mode of the CLKOUT output pin.
During the initial power-on ( when power is applied from 0 V ) ,
if the CLKOE input pin is at high level ( = H ) ,
the power-on reset function selects 32.768 kHz as the frequency.
Interrupts output by Alarm and Timer events. ( Open drain output )
Connected to a positive power supply.
Connected to a ground.
1.
2.
3.
4.
5.
6.
7.
N.C.
SCL
SDA
N.C.
1.27
14.
0.2
CLKOUT
N.C.
N.C.
V
DD
CLKOE
N.C.
N.C.
13.
12.
11.
5.0
GND
N.C.
/ INT
7.4
±
0.2
3.2
±
0.1
10.1
±
10.
9.
8.
CLKOE
/INT
V
DD
GND
Input
Output
−
−
SOP - 14 pin
Metal may be exposed on the top or bottom of this product.
This will not affect any quality, reliability or electrical spec.
Specifications (characteristics)
"
Recommended Operating Conditions
Item
Operating
voltage
Timekeeper
voltage
Operating
temperature
Symbol
V
DD
V
CLK
T
OPR
Conditions
−
−
−
Min.
1.8
1.7
−40
Typ.
3.0
3.0
+25
Max.
5.5
5.5
+125
unit
V
V
°C
Standby
current.
Item
Symbol
∗
Refer to application manual for details.
"
Current consumption under backup mode.
Conditions
Min.
Typ. Max.
unit
f
SCL
= 0 Hz
CLKOE = LOW
+125
°C
0.95
1.80
µA
V
DD
= 5 V
-40
°C
to
+85
°C
0.60
1.2
"
Frequency characteristics
Item
Frequency
stability
Oscilation
start up time
∗1
)
Symbol
∆
f/f
Conditions
T
a
= +25
°C
V
DD
= 3.0 V
T
a
= +25
°C
V
DD
= 1.8 V
T
a
=
−40 °C
to +125
°C
V
DD
= 3.0 V
Rating
5
±
23
∗1
1.5 Max.
3 Max.
unit
×
10
−6
s
I
BK
f
SCL
= 0 Hz
CLKOE = LOW
+125
°C
0.80
1.6
µA
t
STA
V
DD
= 3 V
s
-40
°C
to
+85
°C
0.55
1.0
Equivalent to 1 minutes of monthly deviation.
http://www.epsontoyocom.co.jp
“Quartz + MEMS” 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.
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
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.
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 on 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.
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