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RX4111CEA

型号:

RX4111CEA

品牌:

SEIKO[ SEIKO EPSON CORPORATION ]

页数:

2 页

PDF大小:

411 K

Real time clock module  
Product Number (2,000 pcs / Reel)  
RX4111CE A : X1B000431000115  
RX4111CE B : X1B000431000215  
REAL TIME CLOCK MODULE (SPI-Bus)  
Time stamp function and Low current consumption  
RX4111CE  
Built in frequency adjusted 32.768 kHz crystal unit  
Interface Type  
Low backup current  
: SPI -Bus 4 wire  
: 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  
RX4111CE  
( 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  
Block diagram  
Overview  
Interface type  
SPI-Bus interface (4 wire, 1 MHz)  
Auto power switch function  
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 1.2V 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  
V
DD  
(VDET  
)
internal  
Detector  
VIO  
VDD  
R
I/O  
RTC Main Circuit  
CE  
CLK  
DI  
C
primary  
battery  
32.768kHz  
OSC  
Bus  
Interface  
Wakeup timer function  
Register  
Control  
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  
(System  
Control)  
Battery backup connection example (2)  
DO  
Timer  
Register  
V
BAT  
Event  
Controller  
R
32kHz  
to  
1kHz  
Divider  
/INT  
C
EDLC  
or  
Interrupts  
Controller  
Time stamp function  
secondary  
battery  
8 times stamped from year to 1/256 seconds  
The time stamp trigger inputs from self-monitoring and SPI  
command  
Alarm function  
It is possible program from year to second  
512Hz  
to  
1Hz  
Clock  
and  
Calendar  
Divider  
User RAM  
GND  
FOUT  
FOUT Controller  
Self-monitoring interruption  
Crystal oscillation stop, VBAT low, VDD low  
Pin Functin  
Terminal connection / External dimensionsUnit: mm)  
Signal Name  
I / O  
Input  
Input  
Input  
Output  
Function  
CE  
CLK  
DI  
Chip enables input pin  
Serial clock input pin  
Serial data input pin  
Pin  
Connection  
1
2
V
DD  
V
BAT  
DO  
Serial data output pin  
3
4
5
6
DI  
FOUT  
CLK  
DO  
Frequency output (CMOS)  
(frequency selection: 32.768 kHz, 1024 Hz, 1 Hz)  
FOUT  
/INT  
Output  
Output  
Interrupts output by Alarm and Timer events (N-ch. open drain)  
Power supply pin  
Possible to supply different voltage from VIO  
7
8
9
10  
CE  
VIO  
GND  
/INT  
V
DD  
-
-
Interface power supply pin  
Input to supply the voltage same as a host  
V
IO  
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)  
Recommended Operating Conditions  
Refer to application manual for details  
Current consumption characteristics  
Ta = -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  
-
Input pins = ”L”,  
FOUT = OFF, /INT = OFF,  
BAT = 3.0 V, VDD = VIO = 0.0 V,  
CHGEN = 0b, INIEN = 0b,  
SWSEL0 = 1, SWSEL1 = 0  
Clock supply voltage  
Operating temperature  
V
CLK  
-
-
1.1  
-40  
3.0  
+25  
1.40  
5.5  
+85  
1.60  
V
°C  
V
V
I
BAT  
-
100  
450  
nA  
T
a
Current  
consumption  
VDD detect voltage  
-VDET1  
V
DD, Fall  
1.20  
Input pins = ”L”,  
FOUT = 32.768 kHz, /INT = OFF,  
Frequency characteristics  
V
DD = VIO = 3.0 V,  
I
32k  
-
2.0  
3.0  
mA  
Item  
Grade Symbol  
Conditions  
Min.  
Typ.  
-
Max.  
Unit  
FOUT pin CL = 15 pF,  
CHGEN = 0b, INIEN = 1b  
A
B
-11.5  
+11.5  
T
V
a
= +25 °C  
DD = 3.0 V  
D f / f  
x 10-6  
Frequency tolerance  
-
-23  
-
+23  
1.0  
V
DD = 2.75 V  
to 5.5 V  
Oscillation start-up time  
t
STA  
0.3  
s
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  
――――――――――――――――――――――――――――――――――――――――――――――――――――  
1. The content of this document is subject to change without notice.  
Before purchasing or using Epson products, please contact with sales  
representative of Seiko Epson Corporation (“Epson”) for the latest information and be always sure to check the latest information  
published on Epsons official web sites and resources.  
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Seiko Epson Corporation  
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