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Epson RX-8801SA/JE Distributor, ASIA, EUROPE, AMERICA, http://www.epsontoyocom.co.jp, Electronic devices information on WWW server

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Application Manual

AMERICA

EPSON ELECTRONICS AMERICA, INC.

HEADQUARTER	2580 Orchard Parkway, San Jose, CA 95131, U.S.A.
	Phone: (1)800-228-3964 (Toll free) : (1)408-922-0200 (Main)
	Fax: (1)408-922-0238
	http://www.eea.epson.com
Atlanta Office	One Crown Center 1895 Phoenix Blvd. Suite 348 Atlanta,GA 30349
	Phone: (1)800-228-3964 (Toll free) : (1)770-907-7667 (Main)
	Fax: (1)781-246-5443
Chicago Office	1827 Walden Office Square. Suite 450 Schaumburg, IL 60173
	Phone: (1)847-925-8350
	Fax: (1)847 925-8965
El Segundo Office	1960 E. Grand Ave., 2nd Floor, El Segundo, CA 90245, U.S.A.
	Phone: (1)800-249-7730 (Toll free) : (1)310-955-5300 (Main)
	Fax: (1)310-955-5400

EUROPE

EPSON EUROPE ELECTRONICS GmbH

HEADQUARTER	Riesstrasse 15, 80992 Munich, Germany
	Phone: (49)-(0)89-14005-0 Fax: (49)-(0)89-14005-110
	http://www.epson-electronics.de

ASIA

EPSON (China) CO., LTD.

7F, Jinbao Building No.89 Jinbao Street Dongcheng District, Beijing, China, 100005
Phone: (86) 10-8522-1199	Fax: (86) 10-8522-1120
http://www.epson.com.cn

	Shanghai Branch	High-Tech Building,900 Yishan Road Shanghai 200233,China
		Phone: (86) 21-5423-5577 Fax: (86) 21-5423-4677
	Shenzhen Branch	12/F, Dawning Mansion,#12 Keji South Road, Hi-Tech Park,Shenzhen, China
	EPSON HONG KONG LTD.	Phone: (86) 755-26993828 Fax: (86) 755-26993838
	EPSON HONG KONG LTD.	20/F., Harbour Centre, 25 Harbour Road, Wanchai,Hong kong
		20/F., Harbour Centre, 25 Harbour Road, Wanchai,Hong kong
		Phone: (852) 2585-4600 Fax: (852) 2827-2152
		http://www.epson.com.hk
	EPSON TAIWAN TECHNOLOGY & TRADING LTD.
		14F, No.7, Song Ren Road, Taipei 110
		Phone: (886) 2-8786-6688 Fax: (886)2-8786-6660
		http://www.epson.com.tw
	EPSON SINGAPORE PTE. LTD.
		No 1 HarbourFront Place, #03-02 HarbourFront Tower One, Singapore 098633.
		Phone: (65)- 6586-5500 Fax: (65) 6271-3182
		http://www.epson.com.sg
	SEIKO EPSON CORPORATION KOREA Office
		50F, KLI 63 Building,60 Yoido-dong, Youngdeungpo-Ku, Seoul, 150-763, Korea
		Phone: (82) 2-784-6027 Fax: (82) 2-767-3677
		http://www.epson-device.co.kr
	Gumi Branch Office	2F, Grand Bldg,457-4, Songjeong-dong Gumi-City,Gyongsangbuk-Do,
		730-090, Korea
		Phone: (82) 54-454-6027 Fax: (82) 54-454-6093

DistributorElectronic devices information on WWW serverhttp://www.epsontoyocom.co.jp

Contents

Page NOTICE RX - 8801 SA / JE Contents 2. Block Diagram 3. Terminal description 4. Absolute Maximum Ratings I2C-BusInterface Real-timeClock Module 1. Overview 2. Block Diagram 3. Terminal description RX − 8801 SA RX − 8801 JE 4. Absolute Maximum Ratings Item Symbol Condition Rating 7. Electrical Characteristics •Temperature compensation and consumption current Protocol SCL SDA 8. Use Methods 8.2. Description of Registers 8.2.1. Register table Address Remark SEC MIN 8.2.2. Control register (Reg F) Control Register CSEL1 1) CSEL0,1 ( Compensation interval Select 0, 1 ) bits CSEL0,1 3) AIE ( Alarm Interrupt Enable ) bit When an alarm interrupt event occurs, an interrupt signal is not generated or is canceled (/INT status changes from low to Hi-Z) When an alarm interrupt event occurs, an interrupt signal is generated (/INT status changes from Hi-Zto low) Flag register 1)UF ( Update Flag ) bit 2)TF ( Timer Flag ) bit 3)AF ( Alarm Flag ) bit 4)VLF ( Voltage Low Flag ) bit Extension Register USEL TSEL1 1)TEST bit This is the manufacturer's test bit. Its value should always be "0 8.2.6. Clock counter (Reg - 0 ∼ 2) •The clock counter counts seconds, minutes, and hours The data format is BCD format 1) Second counter 00 seconds Month Date update pattern 1, 3, 5, 7, 8, 10, or 4, 6, 9, or February in normal year 8.3. Fixed-cycleTimer Interrupt Function 8.3.1. Diagram of fixed-cycletimer interrupt function TE bit TIE bit /INT output TSEL1 TSEL0 Flag Register When the 1) TSEL0,1 bits (Timer Select 0, 1) SCL pin SDA pin /INT pin 8.4. Time Update Interrupt Function ∗When the RESET bit value is "1" time update interrupt events do not occur 1) USEL (Update Interrupt Select) bit Selects "second update" (once per second) as the timing for generation of interrupt events Selects "minute update" (once per minute) as the timing for generation of 8.5. Alarm Interrupt Function ∗When the RESET bit value is "1" alarm interrupt events do not occur 1) WADA (Week Alarm /Day Alarm) bit WADA Sets WEEK as target of alarm function (DAY setting is ignored) 3) AF (Alarm Flag) bit The AF bit is cleared to zero to prepare for the next status detection Alarm interrupt events are not detected Alarm interrupt events are detected 4) AIE (Alarm Interrupt Enable) bit 8.6. Reading/Writing Data via the I2C Bus Interface 0.95 s ( Max. ) 1) START condition, repeated START condition, and STOP condition (1)START condition The SDA level changes from high to low while SCL is at high level (2)STOP condition However, the transfer time must be no longer than 0.95 seconds After address Fh, incrementation goes to address 0h [0110 65 h 64 h Page Unit I2C-BUS Master RX-8801 9. External Dimensions / Marking Layout 9.1. RX − 8801 SA ( SOP − 14pin ) ( SOP 14pin ) 9.1.1. External dimensions 9.2.RX − 8801 JE ( VSOJ − 20pin ) 9.2.1. External dimensions RX − 8801 JE ( VSOJ − 20pin ) • External dimensions • Recommended soldering pattern 10.Application notes 1)Notes on handling 2) Notes on packaging AMERICA EUROPE Distributor Electronic devices information on WWW server http://www.epsontoyocom.co.jp