RTC62421 EPSON | Alldatasheet

Document overview

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Technical content

Specifications (characteristics) Absolute Max. rating Operating range Frequency characteristics and current consumption characteristics

Electrical characteristics

(Unit: mm) 23.1 max. 3.3 min. 0.2 min. 6.8 2.8 max. 0.05 min. 4.2 max. (VDD) and VDD are to have the same level of voltage. Do not connect it to any external terminals. NC is not connected internally. RTC-62421 RTC-62423 RTC-62423 7.62 0.25 2.5 16.3 max. 7.9 12.2 max. 0.21.0 0.3 No. No. STD. P CS0 ALE RD GND WR CS1 (VDD) (VDD) VDD 62423 STD. P CS0 NC ALE NC NC RD GND WR NC NC D CS1 NC (VDD) (VDD) VDD 62421 90° to 105° 0° to 10° RTC62421 A EPSON 6053 C RTC62423 A EPSON 9220 4-bit REAL TIME CLOCK MODULE RTC-62421/62423

  • Builtin crystal unit allows adjustment-free efficient operation.
  • Low standby voltage and current consumption (1.8µA at 2V).
  • Wide range of operating temperature (from -40˚C to +85˚C).
  • 24H/12H changeable and leap year automatically adjustable (gregorian calendar).
  • Similar mounting method (RTC-62423) to that used for universal type SMD IC.
  • Pins and functions are compatible with the MSM6242 series. Item Power source voltage Input and output voltage Storage temperature Soldering condition Symbol V DD VI/O TSTG TSOL Condition Ta=25˚C RTC-62421 RTC-62423 RTC-62421 RTC-62423 Specifications -0.3 to 7.0 -0.3 to VDD+0.3 -55 to +85 -55 to +125 Under 260˚C within 10 sec. (lead part) (package should be less than 150˚C) Twice at under 260˚C within 10 sec. or under 230˚C within 3 min. Unit V Item Operating voltage Operating temperature Data holding voltage CS 1 data holding time Operation restoring time Symbol VDD TOPR VDH tCDR tR Condition Refer to the data holding timing Specifications 4.5 to 5.5 -40 to +85 2.0 to 5.5 2.0 min. Unit V V µs Item Frequency tolerance Frequency temperature characteristics Aging Shock resistance Current consumption Symbol Df/fo fa S.R. IDD1 IDD2 Ta=25˚C VDD=5V 62421 A 62421 B 62423 A 62423 Condition Three drops on a hard board from 75 cm or 3000G x 0.3ms x 1/2 sine wave x 3 directions CS1=0V VDD=5V VDD=2V Specifications ±10 ±50 ±20 ±50 +10/-120 +10/-220 ±5 max. ±10 max. 30 max. 1.8 max. Unit ppm ppm/Y ppm µA Item “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 V IH1 VIL1 ILK1 ILK2 VOL1 VOH VOL2 IOFFLK VIH2 VIL2 Condition V1=VDD/0V IOL=2.5mA IOH=-400µA IOL=2.5mA V1=VDD/0V Input frequency 1 MHz VDD=2 to 5.5V Min. 2.2 2.4 4/5 VDD Typ. Max. 0.8 1/-1 10/-10 0.4 0.4 1/5 VDD Unit V µA V µA pF V Applicable terminal All inputs other than CS1 Input other than D0 to D3 D0 to D3 STD.P CS1 -10 to +70˚C (25˚C reference temperature) -40 to +85˚C (25˚C reference temperature) VDD=5V, Ta=25˚C, first year Actual size

Data storage modeInterface possible with external terminals Interface possible with external terminals Data holding timing Register table 32.768 kHz WR RD CS0 ALE CS1 OCS G A T E G A T E G A T E L A T C H D E C O D E R SI to CF COUNTER 1 Hz RESET bit STOP bit HOLD bit BUSY bit 64Hz STD.P 1 sec carry 1 minute carry 1 hour carry 30s.ADJ bit 30s.ADJ bit 24 / 12 bit S1 S10 D1 D10 M10 H1 H10 Y1 Y10 WM1 MO10MO1 CD CE CF VDD Switching characteristics Read mode Write mode VIH2 VIH2 VIH1 VIH1 VIH1 VIH1 VIL1 VIL1 VIL1VIL1 VIH1 VIH1 VIH1 VIH1 VIL1 VIH1 VIL1CS0 ALE WR A3 to A0 D3 to D0 (Input ) tC1HtCIS tAS tRCV tAH tAW tWALtALW tWW tDS tDH CS1 VIH2 VIH2 VIH1 VIL1 VIH1 VIL1 VIL1 VIH1 VIH1 VOH VOL VIH1 VIH1 VIL1CS0 ALE RD A3 to A0 D3 to D0 (output ) tCIHtC1S tAS tRCV tRD tDR tAH tALR CS1 “Z” Block diagram Supplement 0=“L” level. 1=“H” level Note: Do not enter erroneous data for clock. This may result in time keeping error. (VDD = 5V – 0.5V, Ta = -40 to + 85˚C) (ALE = While in use ) tAW tRAL A B C D E F Name of register S10 MI1 MI10 H10 D10 MO1 MO10 Y10 W CD CE CF mi8 mo8 y80 30 sec. ADJ t 1 TEST s40 mi4 mi40 PM/AM mo4 y40 IRQ FLAG s20 mi2 mi20 h20 d20 mo2 y20 BUSY ITRPT /STND STOP s10 mi1 mi10 H10 d10 mo1 mo10 y10 HOLD MASK RESET Count 0 to 9 0 to 5 0 to 9 0 to 5 0 to 9 0 to 2 or 0 to 1 0 to 9 0 to 3 0 to 9 0 to 1 0 to 9 0 to 6 Note 1 - sec. digit register 10 - sec. digit register 1 - min. digit register 10 - min. digit register 1 - hour digit register 10 - hour digit register 1 - day digit register 10 - day digit register 1 - month digit register 10 - month digit register 1 - year digit register 10 - year digit register Week register Control register D Control register E Control register F PM/AM PM AM ITRPT/STND ITRPT STND Bit name * mark BUSY IRQ FLAG 24H/12H TEST

Description

Writable. Recognized as 0 while in read mode. Read only (effective only when HOLD=1) Enter “0” only when clearing interruption. Enter “1” otherwise. Set able only when RESET=1 For our company's testing. TEST should be “0” in normal use. Item CS1 setup time CS1 hold time Address setup time Address hold time ALE pulse width ALE before WRITE ALE before READ ALE after WRITE ALE after READ WRITE pulse width RD to data DATA hold DATA setup time DATA hold time RD /WR ___ recovery time Symbol tCIS tCIH tAS tAH tAW tALW tALR tWAL tRAL tWW tRD tDR tDS tDH tRCV Condition CL=150pF Min. 1000 1000 120 100 Max. 120 Unit ns Address