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RX8111CEA

型号:

RX8111CEA

品牌:

SEIKO[ SEIKO EPSON CORPORATION ]

页数:

3 页

PDF大小:

408 K

Real time clock module  
REAL TIME CLOCK MODULE (I2C-Bus)  
Product Number (2,000 pcs / Reel)  
RX8111CE A : X1B000421000115  
RX8111CE B : X1B000421000215  
Time stamp function and Low current consumption  
RX8111CE  
Built in frequency adjusted 32.768 kHz crystal unit  
Interface Type  
Low backup current  
I2C -Bus  
100 nA Typ. / 3 V  
Auto power switching function Automatically switches to backup power  
supply by monitoring the VDD voltage  
Time stamp function  
Interrupt output  
Alarm interruption  
8 times stamped from year to 1/256 seconds  
Wake up every minute or every second  
Day, date, hour, minute, second  
RX8111CE  
( 3.2 x 2.5 mm, t = 1.0 mm Max. )  
Auto repeat wakeup timer interruption  
Self-monitoring interruption Crystal oscillation stop, VBAT low, VDD low  
The I2C-Bus is a trademark of NXP Semiconductors  
Block diagram  
Overview  
Interface type  
I2C-Bus interface Fast-Mode 400 kHz  
Auto power switch function  
VOUT  
Battery backup connection example (1)  
The VDD voltage is monitored and it switches to the backup  
power supply by the automatic operation  
Backup power supply switching voltage 1.2 V Min.  
Clock output function  
Output frequency is selectable from 32.768 kHz, 1024 Hz, 1 Hz  
When the clock output is not used, the FOUT pin can be used as  
a timer output pin (CMOS)  
V
BAT  
VDD  
V
BAT  
Power  
Control  
V
DD  
V
BAT  
(VDET1  
)
V
IO  
Detector  
VCMP  
Detector  
VLOW  
R
I/O  
RTC Main Circuit  
SCL  
SDA  
C
primary  
battery  
32.768kHz  
Bus  
Interface  
Register  
Control  
Wakeup timer function  
Selectable from 244 µs to 32 years (24 bit x 1 ch.)  
Timer source clock selectable from 1/60 Hz, 1 Hz, 64 Hz, 4096 Hz  
Auto release after interrupt output from /INT pin at timer  
completes  
This operation is auto repeat with a selected cycle, it can be used  
like a watchdog timer  
OSC  
(System  
Control)  
Battery backup connection example (2)  
Timer  
Register  
V
BAT  
EVIN  
/INT  
Event  
Controller  
R
32kHz  
to  
1kHz  
Divider  
C
EDLC  
or  
Interrupts  
Controller  
Alarm,Timer,  
Update,Event  
Time stamp function  
secondary  
battery  
512Hz  
to  
1Hz  
Clock  
and  
Calendar  
8 times stamped from year to 1/256 seconds  
The time stamp trigger inputs from EVIN pin, self-monitoring and  
I2C software command  
EVIN pin has function of chattering-cancel  
Alarm function  
It is possible program from year to second  
Self-monitoring interruption  
Divider  
User RAM  
GND  
FOUT  
FOUT Controller  
FOUT,  
Timer  
Crystal oscillation stop, VBAT low, VDD low  
Pin Functin  
Terminal connection / External dimensionsUnit: mm)  
Signal Name  
I / O  
Function  
EVIN  
SCL  
SDA  
Input  
Input  
External event input pin (Pull up/down and polarity are selectable by software)  
Serial clock input pin  
Pin  
Connection  
1
2
3
4
5
6
7
8
9
V
DD  
OUT  
BAT  
Input / Output Serial data input and output pin  
V
V
Frequency output pin (CMOS)  
Output  
FOUT  
/INT  
(frequency selection: 32.768 kHz, 1024 Hz, 1 Hz)  
FOUT  
SCL  
EVIN  
SDA  
VIO  
GND  
/INT  
Output  
Interrupts output by Alarm and Timer events (N-ch. open drain)  
Power-supply pin  
Possible to supply different voltage from VIO  
VDD  
-
Interface power supply pin  
Input to supply the voltage same as a host  
VIO  
-
-
Internal voltage output pin  
Connect bypass capacitor of 1.0 mF  
VOUT  
10  
This is a power supply pin for backup battery  
V
BAT  
Connect an EDLC, a secondary battery, a primary battery  
In the backup voltage range, supplied to IC, from this pin  
-
-
GND  
Ground pin  
Specifications (characteristics)  
Refer to application manual for details  
Recommended Operating Conditions  
Current consumption characteristics  
T
a = -40 °C to +85 °C  
Item  
Symbol  
Conditions  
Min.  
1.6  
Typ.  
3.0  
Max.  
5.5  
Unit  
V
Item  
Symbol  
Conditions  
Min.  
-
Typ.  
Max.  
Unit  
Operating supply voltage  
VDD  
-
SCL = SDA = ” L”, FOUT = OFF,  
/INT = OFF,  
Clock supply voltage  
Operating temperature  
V
CLK  
-
-
1.1  
-40  
3.0  
+25  
1.40  
5.5  
+85  
1.60  
V
°C  
V
V
BAT = 3.0 V, VDD = VIO = 0.0 V,  
I
BAT  
100  
2.0  
450  
nA  
CHGEN = 0b, INIEN = 0b,  
SWSEL0 = 1, SWSEL1 = 0  
T
a
Current  
consumption  
VDD detect voltage  
-VDET1  
VDD, Fall  
1.20  
FOUT = 32.768 kHz, /INT = OFF,  
Frequency characteristics  
V
DD = VIO = 3.0 V,  
I
32k  
-
3.0  
mA  
Item  
Grade Symbol  
Conditions  
Min.  
Typ.  
-
Max.  
Unit  
FOUT pin CL = 15 pF  
A
B
-11.5  
+11.5  
T
V
a
= +25 °C  
D f / f  
x 10-6  
Frequency tolerance  
DD = 3.0 V  
-
-23  
-
+23  
1.0  
V
DD = 2.75 V  
to 5.5 V  
Oscillation start-up time  
t
STA  
0.3  
s
Real time clock module  
原寸大  
http://www.epsontoyocom.co.jp  
88  
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  
ISO 14000 is an international standard for environmental  
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.  
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, 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 IATF 16949 certification that is requested strongly by major  
automotive manufacturers as standard.  
IATF 16949 is the international standard that added the  
sector-specific supplemental requirements for automotive  
industry based on ISO9001.  
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 ).  
NOTICEPLEASE READ CAREFULLY BELOW BEFORE THE USE OF THIS DOCUMENT ©Seiko Epson Corporation 2020  
――――――――――――――――――――――――――――――――――――――――――――――――――――  
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Before purchasing or using Epson products, please contact with sales  
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Seiko Epson Corporation  
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