RTC-72421A EPSON | Alldatasheet

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Technical content

/K53/K70/K65/K63/K69/K66/K69/K63/K61/K74/K69/K6F/K6E/K73 /K28/K63/K68/K61/K72/K61/K63/K74/K65/K72/K69/K73/K74/K69/K63/K73/K29 /K41/K62/K73/K6F/K6C/K75/K74/K65 /K4D/K61/K78/K2E /K72/K61/K74/K69/K6E/K67 /K4F/K70/K65/K72/K61/K74/K69/K6E/K67 /K72/K61/K6E/K67/K65 /K46/K72/K65/K71/K75/K65/K6E/K63/K79 /K63/K68/K61/K72/K61/K63/K74/K65/K72/K69/K73/K74/K69/K63/K73 /K44/K43 /K63/K68/K61/K72/K61/K63/K74/K65/K72/K69/K73/K74/K69/K63/K73 /K45/K78/K74/K65/K72/K6E/K61/K6C /K64/K69/K6D/K65/K6E/K73/K69/K6F/K6E/K73 /K54/K65/K72/K6D/K69/K6E/K61/K6C /K63/K6F/K6E/K6E/K65/K63/K74/K69/K6F/K6E /K52/K54/K43/K2D/K37/K32/K34/K32/K31 (Unit: mm) 23.1 Max. 3.3 Min. 0.2 Min. 6.34.2 #18 #10 /K52/K54/K43/K37/K32/K34/K32/K31 /K41 /K45/K50/K53/K4F/K4E /K31/K32/K33/K34/K41 /K52/K54/K43/K37/K32/K34/K32/K33 /K41 /K45/K50/K53/K4F/K4E /K31/K32/K33/K34/K41 (VDD) and VDD are to have the same level of voltage. Do not connect it to any external terminals. NC is not connected internally. #24 #12 #13 /K52/K54/K43/K2D/K37/K32/K34/K32/K31 /K52/K54/K43/K2D/K37/K32/K34/K32/K33 /K52/K54/K43/K2D/K37/K32/K34/K32/K33 0.1 Min. 2.8 Max. 7.62 0.25 16.3 Max. 7.9 12.2 Max. 0.2 1.0 90° to 105° 0° to 10° 1.27 0.35 2.54 0.65 Max. (DIP 18-pin) (SOP 24-pin) No. Pin terminal STD. P CS0 ALE RD GND No. Pin terminal VDD (VDD) (VDD) CS1 WR No. Pin terminal STD. P CS0 NC ALE NC NC RD GND No. Pin terminal VDD (VDD) (VDD) NC CS1 NC NC WRItem Frequency tolerance Frequency temperature characteristics Frequency voltage characteristics Aging Item Current consumption “H” input voltage (1) “L” input voltage (1) Input leak current (1) Input leak current (2) “L” output voltage (1) “H” output voltage “L” output voltage (2) Off leak current Input capacity “H” input voltage (2) “L” input voltage (2) Symbol ∆f/fo TOP f/V fa Symbol IDD1 IDD2 VIH1 VIL1 ILK1 ILK2 VOL1 VOH VOL2 IOFFLK VIH2 VIL2 Min. 2.2 2.4 4/5 VDD Typ. 0.9 Max. 0.8 ±10 0.4 0.4 1/5 VDD Unit µA V µA V µA pF V D0 to D3 STD.P D0 to D3 CS1 Input other than D0 to D3 Input other than D 0 to D3 All inputs other than CS Applicable terminalCondition V1=VDD/0 V IOL=2.5 mA IOH=-400 µA IOL=2.5 mA V1=VDD/0 V Input frequency 1 MHz VDD=2 to 5.5 V Condition Range ±10 ±50 ±20 ±50 +10/-120 +10/-220 ±5 Max. ±5 Max. Unit x 10 x 10-6/V x 10 /year -10 °C to +70 °C (Reference at +25 °C) -40 °C to +85 °C (Reference at +25 °C) Ta=+25 °C VDD=2.0 V to 5.5 V VDD=5 V, Ta=+25 °C, first year 72421 A 72421 B 72423 A 72423 Ta=+25 °C VDD=5 V CS1=0 V Exclude input/ output current VDD=5 V VDD=2 V 4-bit REAL TIME CLOCK MODULE RTC-72421/72423

  • Built-in crystal unit allows adjustment-free efficient operation.
  • 12/24 h clock switchover function and automatic leap year setting.
  • Interrupt masking. Item Supply voltage Input and output voltage Storage temperature Symbol VDD VI/O TSTG Condition Ta=+25 °C Ta=+25 °C RTC-72421 RTC-72423 Min. Max. -0.3 7.0 GND -0.3 V DD+0.3 -55 +85 -55 +125 Unit V Item Power voltage Supply voltage Operating temperature Symbol VDD VCLK TOPR Condition RTC-72421 RTC-72423 Min. Max. 4.5 5.5 2.0 5.5 -10 70 -40 85 Unit V V Actual size The details are mentioned in the application manual. http://www.epson device.com Product number (please refer to page 2) Q42724 21xxxxx00 Q42724 23xxxxx00 Real time clock module ∗Stored as bare product after unpacking ∗No condensation RTC-72423RTC-72421