RX8900SA MODULE Datasheet

RX8900SA Datasheet PDF, Equivalent


Part Number

RX8900SA

Description

REAL TIME CLOCK MODULE

Manufacture

EPSON

Total Page 2 Pages
Datasheet
Download RX8900SA Datasheet


RX8900SA
Real time clock module
REAL TIME CLOCK MODULE (I2C-Bus)
Built-in 32.768 kHz-DTCXO, High Stability
and Power Switching
RX 8900 SA/CE
CE
Product Number (Please contact us)
RX8900SA : X1B000292xxxx00
RX8900CE UA : X1B000301000100
RX8900CE UB : X1B000301000200
RX8900CE UC : X1B000301000300
Built in frequency adjusted 32.768 kHz crystal unit and DTCXO.
Interface Type
: I2C-Bus interface (400kHz)
Interface voltage range
: 2.5 V to 5.5 V
Temp. compensated voltage range : 2.0 V to 5.5 V
Clock supply voltage range
: 1.6 V to 5.5 V
Selectable clock output (32.768 kHz, 1024 Hz, 1 Hz)
Actual size
The various functions include full calendar, alarm, timer, temp. sensor function.
.Epson prepared Linux driver for development.
RX8900SA
(http://www5.epsondevice.com/en/information/support/linux_rtc/)
The registered trademark Linux® is used pursuant to a sublicense from LMI(Linux Mark Institute)
The I2C-Bus is a trademark of NXP Semiconductors.
RX8900SA
(10.1 × 7.4 × 3.3 mm)
RX8900CE
RX8900CE
(3.2 × 2.5 × 1.0 mm)
Block diagram
VDD
VDD
Detector
Battery backup connection example (1)
VBAT
R
primary
battery
C
VBAT
Battery backup connection example (2)
VBAT
R
EDLC
or
secondary
battery
C
Register
Control
(System
Control)
DTCXO
Divider
Bus
Interface
Alarm
Register
Timer
Register
Interrupts
Controller
Clock
and
Calender
FOUT
Controller
GND
FOE
SCL
SDA
FOUT
/INT
Overview
•High Stability
UA ± 3.4 x 10-6 / -40 ºC to +85 ºC
( Equivalent to ±9 seconds of month deviation )
UB ± 5.0 x 10-6 / -40 ºC to +85 ºC
( Equivalent to ±13 seconds of month deviation )
UC ± 5.0 x 10-6 / -30 ºC to +70 ºC
( Equivalent to ±13 seconds of month deviation )
32.768 kHz frequency output function
FOUT pin output (C-MOS output), CL=30 pF
Output selectable: 32.768 kHz, 1024 Hz, 1 Hz
•Available automatic battery backup switch-over function
Charge from VDD to backup battery connected to VBAT is
possible. VDD voltage drop(VDET3) detection and automatically
switches to the backup battery.
This circuit is optimal to backup with a secondary battery and
a large capacitor.
•Timer function
Timer period is adjustable in 1/4096 second from 4095 minutes.
•Alarm function
Available dual-alarm, weekly and monthly.
•Temp. sensor function
Available readout temperature data from embedded temp
sensor. (Bank.2_Add17h)
Pin Function
Terminal connection/External dimensions
(Unit:mm)
Signal Name
T1(CE)
SCL
FOUT
VBAT
VDD
FOE
/ INT
GND
T2(VPP)
SDA
I/O
input
input
Output
-
-
input
Output
-
-
I/O
Function
Use by the manufacture for testing.
( Do not connect externally.)
Serial clock input pin.
The pin outputs the reference clock signal.
( CMOS output )
Battery supply.
This pin has charge capability to backup battery.
Connected to a positive power supply
The input pin for the FOUT output control.
Interrupt output (N-ch. open drain).
Connected to a ground
Use by the manufacture for testing.
( Do not connect externally.)
Data input and output pin.
RX8900SA
1. T1(CE)
2. SCL
3. FOUT
4. N.C.
5. VBAT
5.0
6. VDD
7. FOE
7.40.2
SOP14 pin
14. N.C.
13. SDA
12. T2(VPP)
11. GND
10. /INT
9. N.C.
8. N.C.
1. FOE
2. VDD
3. VBAT
4. FOUT
5. SCL
RX8900CE
2.5 ± 0.2
10. /INT
9. GND
8. T2(VPP)
7. SDA
6. T1(CE)
The metal case inside of the molding compound may be exposed on the top or bottom of this product.
This purely cosmetic and does not have any effect on quality, reliability or electrical specs.
Specifications (characteristics)
Electrical Characteristics
Item
Symb
ol
Conditions
Min. Typ. Max.
Operating voltage
Temp. compensated Voltage
Clock supply voltage
Operating temperature
Stability
VDD
VTEM
VCLK
TOPR
f/f
Interface voltage
Temp. compensated voltage
Internal clock
No condensation
UA Ta= -40 ºC to +85 ºC
UB Ta=-40 ºC to +85 ºC
UC Ta= -30 ºC to +70 ºC
2.5 3.0 5.5
2.0 3.0 5.5
1.6 3.0 5.5
-40 +25 +851
±3.42
±5.03
Current consumption (1)
Current consumption (2)
fSCL=0Hz, /INT=VDD,
IDD1 FOE =GND
VDD=VBAT
FOUT: OFF
IDD2 Temp. Compensation
interval 2.0 s.
VDD = 5V
VDD = 3V
-
-
0.72 1.5
0.70 1.4
1) Please contact us about +85 C < TOPR
2) Equivalent to ±9 seconds of month deviation.3)Equivalent to ±13 seconds of month deviation.
Unit
V
V
V
ºC
10-6
A
Refer to application manual for details.
32.768 kHz-DTCXO Frequency temperature characteristics (Example)
Frequency temperature characteristics
10
5
32.768 kHz DTCXO
0
-5
-10
-15
Tuning fork X'tal
-20
-25
-30
-45 -35 -25 -15 -5
5 15 25 35 45 55 65 75 85
Temperature (ºC)

RX8900SA
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
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
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.
certification.
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 ISO/TS
16949 certification that is requested strongly by major automotive
manufacturers as standard.
ISO/TS16949 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 ).
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 Seiko Epson.
The information about applied data, circuitry, software, usage, etc. written in this material is intended for reference only. Seiko Epson
does not assume any liability for the occurrence of customer damage or infringing on any patent or copyright of a third party. This
material does not authorize the licensing for any patent or intellectual copyrights.
When exporting the products or technology described in this material, you should comply with the applicable export control laws and
regulations and follow the procedures required by such laws and regulations.
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 Seiko Epson 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.
All brands or product names mentioned herein are trademarks and/or registered trademarks of their respective.
Seiko Epson Corporation


Features Real time clock module REAL TIME CLOCK M ODULE (I2C-Bus) Built-in 32.768 kHz-DTC XO, High Stability and Power Switching RX 8900 SA/CE CE Product Num ber (Please contact us) RX8900SA : X1B0 00292xxxx00 RX8900CE UA : X1B0003010001 00 RX8900CE UB : X1B000301000200 RX8900 CE UC : X1B000301000300 •Built in fr equency adjusted 32.768 kHz crystal uni t and DTCXO. •Interface Type : I2C- Bus interface (400kHz) •Interface vo ltage range : 2.5 V to 5.5 V •Temp. compensated voltage range : 2.0 V to 5 .5 V •Clock supply voltage range : 1.6 V to 5.5 V •Selectable clock out put (32.768 kHz, 1024 Hz, 1 Hz) Actual size •The various functions include full calendar, alarm, timer, temp. sen sor function. .Epson prepared Linux dr iver for development. RX8900SA (http: //www5.epsondevice.com/en/information/s upport/linux_rtc/) The registered trad emark Linux® is used pursuant to a sub license from LMI(Linux Mark Institute) The I2C-Bus is a trademark of NXP Semiconductors. RX8900SA (10.1 × 7.4 × 3.3 mm) R.
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