Real time clock module Product Number REAL TIME CLOCK MODULE (4-bit) RTC-72423A : Q42724232000600 RTC-72423B : Q42724232000700 RTC-72423 Built-in crystal unit allows adjustment-free efficient operation. 24 h /12 h changeable and leap year automatically adjustable (Gregorian calendar). Note 7242series does not have complete compatibility ability for theold product RTC-6242 series. when replace to 7242series from 6242 series, confirm the technical information of RTC7242 latest manual by all means. Block diagram RTC-72423 OSC Counter D3 RESET STOP HOLD BUSY D2 Gate bit bit bit bit 24/12 D1 bit 30 sec ADJ D0 bit S1 S10 MI1 MI10 H1 H10 W WR Gate RD S1 to A3 CF A2 D1 D10 MO1 MO10 Y1 Y10 Decoder A1 Latch A0 CS0 Output Selector ALE STD.P 64 Hz CS1 1 Second carry 1 Minute carry CD CE CF 1 Hour carry Terminal connection/External dimensions (Unit:mm) RTC-72423 (SOP 24-pin) No. Pin No. Pin 16.3 terminal terminal 24 24 13 13 1 STD.P 24 VDD 2 /CS0 23 (VDD) 3 N.C. 22 (VDD) 4 ALE 21 N.C. RRTTCC7242362423 5 A0 20 CS1 6 N.C. 19 D0 EPSOEPSONN 1 1223344AA 7 A1 18 N.C. 8 N.C. 17 N.C. 9 A2 16 D1 1 1 12 12 10 A3 15 D2 11 /RD 14 D3 12 GND 13 /WR 0.0.22 2.8 0.1 00 -- 1010 1.0 0.35 1.27 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) *Refer to application manual for details. Absolute Max. rating DC characteristics Item Symbol Conditions Min. Max. Unit Item Symbol Conditions Min. Typ. Max. Unit Applicable terminal CS1= 0 V Supply voltage VDD Ta=+25 C -0.3 +7.0 IDD1 VDD=5 V 1 10 - V Current consumption Exclude input/ - A Input voltage VI/O Ta=+25 C GND-0.3 VDD+0.3 IDD2 VDD=2 V 0.9 5 - output current HIGH input voltage (1) VIH1 2.2 - Storage All inputs other than TSTG - -55 +125 C - V temperature * LOW input voltage (1) VIL1 - 0.8 CS1 LOW output voltage (1) VOL1 IOL=2.5 mA - 0.4 *Stored as bare product after unpacking - D0 to D3 HIGH output voltage VOH IOH=-400 A 2.4 - V Operating range LOW output voltage (2) VOL2 IOL=2.5 mA 0.4 Item Symbol Conditions Min. Max. Unit STD.P Power voltage VDD - 4.5 5.5 OFF leak current IOFFLK V1=VDD/0 V 10/-10 A V - Input other than Clock voltage VCLK - 2.0 5.5 10 Input frequency D0 to D3 Input capacity C1 pF 1 MHz - 20 D0 to D3, STD.P Operating TOPR - -40 +85 C temperature HIGH input voltage (2) VIH2 4/5 VDD VDD=2.0 V to 5.5 V V CS1 LOW input voltage (2) VIL2 - 1/5 VDD No condensation - Input other than Input leak current (1) ILK1 1/-1 A Frequency characteristics D0 to D3 V1=VDD/0 V - Item Symbol Conditions Range Unit Input leak current (2) ILK2 10/-10 D0 to D3 72423A 20 Frequency Ta=+25 C f /f precision VDD=5.0 V 72423B 50 -6 10 Frequency temperature TOP -40 C to +85 C(+25 C) +10 / -220 characteristics Frequency voltage -6 f/V Ta=+25 C,VDD=2.0 V to 5.5 V 5.0 Max. 10 /V characteristics -6 Aging fa Ta=+25 C,VDD=5.0 V,First year 5.0 Max. 10 /year Discontinued product 7.7.99 12.2 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) management that was established by the International operates under the ISO 14001 environmental management standard. Standards Organization in 1996 against the background of All of our major manufacturing and non-manufacturing sites, in growing concern regarding global warming, destruction of the ozone layer, and global deforestation. Japan and overseas, completed the acquisition of ISO 14001 certification. WORKING FOR HIGH QUALITY In order provide high quality and reliable products and services IATF 16949 is the international standard that added the than meet customer needs, Seiko Epson made early efforts towards sector-specific supplemental requirements for automotive obtaining ISO9000 series certification and has acquired ISO9001 for industry based on ISO9001. all business establishments in Japan and abroad. We have also acquired IATF 16949 certification that is requested strongly by major automotive manufacturers as standard. 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. 2. 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