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| Real time clock module 4-bit REAL TIME CLOCK MODULE RTC-62421/62423 * * * * Builtin crystal unit allows adjustment-free efficient operation. Low standby voltage and current consumption (1.8A at 2V). Wide range of operating temperature (from -40C to +85C). 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. Actual size Specifications (characteristics) Absolute Max. rating Item Symbol Power source voltage VDD Input and output voltage VI/O Storage temperature TSTG Condition Ta=25C RTC-62421 RTC-62423 RTC-62421 Soldering condition TSOL RTC-62423 Specifications -0.3 to 7.0 -0.3 to VDD+0.3 -55 to +85 -55 to +125 Under 260C within 10 sec. (lead part) (package should be less than 150C) Twice at under 260C within 10 sec. or under 230C within 3 min. Terminal connection Unit V C RTC-62421 18 17 16 15 14 13 12 11 10 1 2 3 4 5 6 7 8 9 RTC-62423 24 23 22 21 20 19 18 17 16 15 14 13 Operating range Item Operating voltage Operating temperature Data holding voltage CS1 data holding time Operation restoring time Symbol VDD TOPR VDH tCDR tR Refer to the data holding timing Condition Specifications 4.5 to 5.5 -40 to +85 2.0 to 5.5 2.0 min. Unit V C V s No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 62421 STD. P CS0 ALE A0 A1 A2 A3 RD GND WR D3 D2 D1 D0 CS1 (VDD) (VDD) VDD 1 2 3 4 5 6 7 8 9 10 11 12 (VDD) and VDD are to have the same level of voltage. Do not connect it to any external terminals. NC is not connected internally. No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 62423 STD. P CS0 NC ALE A0 NC A1 NC A2 A3 RD GND WR D3 D2 D1 NC NC D0 CS1 NC (VDD) (VDD) VDD Frequency characteristics and current consumption characteristics Item Symbol Condition 62421 A Frequency tolerance f/fo Ta=25C 62421 B VDD=5V 62423 A 62423 Frequency temperature characteristics Aging Shock resistance Current consumption fa S.R. IDD1 IDD2 -10 to +70C (25C reference temperature) -40 to +85C (25C reference temperature) VDD=5V, Ta=25C, Specifications 10 50 20 50 +10/-120 +10/-220 5 max. 10 max. 30 max. 1.8 max. Unit External dimensions RTC-62421 23.1 max. (Unit: mm) ppm 6.8 RTC62421 A EPSON 6053 C 7.62 0.2 min. first year Three drops on a hard board from 75 cm or 3000G x 0.3ms x 1/2 sine wave x 3 directions ppm/Y ppm 4.2 max. 0.25 90 to 105 3.3 min. CS1=0V VDD=5V VDD=2V A Electrical characteristics 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 Condition VIH1 VIL1 ILK1 ILK2 VOL1 VOH VOL2 IOFFLK C1 VIH2 VIL2 IOL=2.5mA IOH=-400A IOL=2.5mA V1=VDD/0V frequency 1 MHz Input RTC-62423 Min. Typ. Max. 2.2 -- 0.8 -- 1/-1 -- 10/-10 0.4 2.4 -- 5 -- -- 0.4 10 A pF 0.05 min. 2.8 max. Unit V A Applicable terminal 16.3 max. -- V1=VDD/0V All inputs other than CS1 Input other than D0 to D3 D0 to D3 V STD.P RTC62423 A EPSON 9220 12.2 max. 7.9 2.5 4/5 VDD VDD=2 to 5.5V -- -- 1/5 VDD V CS1 63 0.3 0 to 10 0.2 1.0 Real time clock module Data holding timing VDD 4V 2 to 4V CS1 VIH2 VIL2 Interface possible with external terminals CS1 1/5VDD Data storage mode VIL2 Interface possible with external terminals 4V Switching characteristics ( ALE = While in use ) Item ( VDD = 5V 0.5V, Ta = -40 to + 85C ) CS1 setup time tR VIH2 Symbol Condition Min. Max. Unit tCIS 1000 tCIH tAS tAH tAW tALW tALR tWAL tRAL tWW tRD tDR tDS tDH tRCV -- CL=150pF 0 100 10 60 -- -- 1000 25 25 40 10 10 20 10 120 120 45 ns -- tCDR 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 CS0 or WR not occurred Register table Address Name of A3 A2 A1 A0 register 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 00 01 10 11 00 01 10 11 00 01 10 11 00 01 10 11 D3 s8 mi8 h8 d8 mo8 y8 y80 D2 s4 s40 mi4 mi40 h4 D1 s2 s20 mi2 mi20 h2 h20 d2 d20 mo2 y2 y20 w2 D0 s1 s10 mi1 mi10 h1 H10 d1 d10 mo1 mo10 y1 y10 w1 Count 0 to 9 0 to 5 0 to 9 0 to 5 0 to 9 0 to 2 or 0 to 1 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 __ RD to data DATA hold DATA setup time DATA hold time 0 1 2 3 4 5 6 7 8 9 A B C D E F S1 S10 MI1 MI10 H1 H10 D1 D10 MO1 MO10 Y1 Y10 W CD CE CF __ ___ RD/WR recovery time Write mode VIH2 CS1 A3 to A0 CS0 VIH1 PM/AM d4 mo4 y4 y40 w4 0 to 9 0 to 3 0 to 9 0 to 1 0 to 9 0 to 6 VIH2 tCIS t AS VIH1 VIL1 tAH VIH1 VIL1 tC1H tAW VIH1 ALE WR VIH1 VIH1 30 sec. IRQ BUSY HOLD ADJ FLAG ITRPT t0 /STND MASK t1 TEST 24/12 STOP RESET tALW VIL1 tWW VIH1 tWAL tRCV VIL1 tDS D3 to D0 (Input ) tDH VIL1 VIH1 VIL1 VIH1 Control register F Supplement 0="L" level. 1="H" level PM/AM 1 0 PM AM 24/12 24 12 ITRPT/STND ITRPT Read mode VIH2 CS1 VIH2 STND tC1S tAS VIH1 VIH1 tAH VIH1 VIL1 tCIH A3 to A0 CS0 tAW VIL1 VIH1 VIH1 VIH1 Description Bit name Writable. Recognized as 0 while in read mode. mark Read only (effective only when HOLD=1) BUSY Enter "0" only when clearing interruption. Enter "1" otherwise. IRQ FLAG Set able only when RESET=1 24H/12H For our company's testing. TEST should be "0" in normal use. TEST Note: Do not enter erroneous data for clock. This may result in time keeping error. ALE RD tALR VIL1 tRAL tRCV tDR VOH VOL "Z" VIL1 tRD D3 to D0 (output ) Block diagram 32.768 kHz OCS COUNTER RESET STOP 30s.ADJ bit bit bit 30s.ADJ bit S1 S10 M1 M10 1 Hz D3 D2 D1 D0 HOLD BUSY bit bit 24 / 12 bit H1 H10 W G A T E WR RD G A T E A3 A2 A1 A0 CS0 G A T E & L A T C H VDD D E C O D E R D1 D10 MO1 MO10 Y1 Y10 64Hz 1 sec carry 1 minute carry 1 hour carry STD.P SI to CF CD CE CF ALE CS1 64 |
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