Electronic Components Datasheet Search |
|
RTC-72421 Datasheet(PDF) 1 Page - Epson Company |
|
RTC-72421 Datasheet(HTML) 1 Page - Epson Company |
1 / 2 page Actual size Real time clock module Block diagram Terminal connection/External dimensions (Unit:mm) 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 Supply voltage VDD Ta=+25 C -0.3 +7.0 V Current consumption IDD1 CS1= 0 V Exclude input/ output current VDD=5 V - 1 10 A - Input voltage VI/O Ta=+25 C GND-0.3 VDD+0.3 IDD2 VDD=2 V 0.9 5 - Storage temperature * TSTG RTC-72421 -55 +85 C HIGH input voltage (1) VIH1 - 2.2 - - V All inputs other than CS1 RTC-72423 -55 +125 LOW input voltage (1) VIL1 - 0.8 *Stored as bare product after unpacking LOW output voltage (1) VOL1 IOL=2.5 mA - 0.4 V D0 to D3 Operating range HIGH output voltage VOH IOH=-400 µA 2.4 - Item Symbol Conditions Min. Max. Unit LOW output voltage (2) VOL2 IOL=2.5 mA - 0.4 STD.P Power voltage VDD - 4.5 5.5 V OFF leak current IOFFLK V1=VDD/0 V 10/-10 A Clock voltage VCLK - 2.0 5.5 Input capacity C1 Input frequency 1 MHz 10 - pF Input other than D0 to D3 Operating temperature TOPR RTC-72421 -10 +70 C 20 D0 to D3, STD.P RTC-72423 -40 +85 HIGH input voltage (2) VIH2 VDD=2.0 V to 5.5 V 4/5 VDD - V CS1 Stored as bare produc after unpacking LOW input voltage (2) VIL2 - 1/5 VDD Frequency characteristics Input leak current (1) ILK1 V1=VDD/0 V - 1/-1 A Input other than D0 to D3 Item Symbol Conditions Range Unit Input leak current (2) ILK2 10/-10 D0 to D3 Frequency precision f /f Ta=+25 °C VDD=5.0 V 72421A 10 10-6 72421B 50 72423A 20 72423B 50 Frequency temperature characteristics TOP -10 C to +70 C (+25 C) +10 / -120 -40 C to +85 C(+25 C) +10 / -220 Frequency voltage characteristics f/V Ta=+25 C,VDD=2.0 V to 5.5 V 5.0 Max. 10-6/V Aging fa Ta=+25 C,VDD=5.0 V,First year 5.0 Max. 10-6/year OS C R ESET bit STOP bit 30 sec A D J bit C ounter HO LD bit BU SY bit D3 D2 D1 D0 WR RD A3 A2 A1 A0 CS 0 ALE CS 1 S 1 S 10 M I1 M I10 H1 H10 W D1 D10 M O1 M O 10 Y1 Y10 64 H z 1 S ec ond c arry 1 M inute c arry 1 H our c arry S 1 to CF CD CE CF Gate Gate Latc h Decoder 24/12 bit R T C -72421/72423 STD .P O utput Selec tor RTC-72421 RTC-72423 REAL TIME CLOCK MODULE (4-bit) RTC - 72421 RTC - 72423 Built-in crystal unit allows adjustment-free efficient operation. 24 h /12 h changeable and leap year automatically adjustable (Gregorian calendar). The metal cas e inside of the molding c ompound m ay be exposed on the top or bottom of this product. This purely cos metic and does not have any eff ect on quality, reliability or electric al specs. RTC-72421 (DIP 18-pin) 7.62 0 -15 0.25 0.46 4.2 Max. 3.3 Min. 0.2 Min. 2.54 1.52 23.1 Max. #1 #18 #10 #9 RTC72421 A EPSON 1234A No. Pin terminal No. Pin terminal 1 STD.P 18 VDD 2 /CS0 17 (VDD) 3 ALE 16 (VDD) 4 A0 15 CS1 5 A1 14 C0 6 A2 13 D1 7 A3 12 D2 8 /RD 11 D3 9 GND 10 /W R RTC-72423 (SOP 24-pin) 1.0 0.2 0 - 10 0.2 0 - 10 1.27 0.35 2.8 Max. 0.1 M in. 2.8 Max. 0.1 M in. #12 #1 16.3 Max. #24 #13 RTC62423 EPSON 1234A #12 #1 16.3 Max. #24 #13 RTC72423 EPSON 1234A No. Pin terminal No. Pin terminal 1 STD.P 24 VDD 2 /CS0 23 (VDD) 3 N.C. 22 (VDD) 4 ALE 21 N.C. 5 A0 20 CS1 6 N.C. 19 D0 7 A1 18 N.C. 8 N.C. 17 N.C. 9 A2 16 D1 10 A3 15 D2 11 /RD 14 D3 12 GND 13 /W R Product Number (Please contact us) RTC-72421 : Q42724212xxxx00 RTC-72423 : Q42724232xxxx00 |
Similar Part No. - RTC-72421 |
|
Similar Description - RTC-72421 |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.COM |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |