75 real time clock module specifications (characteristics) absolute max. rating operating range frequency characteristics and current consumption characteristics dc characteristics external dimensions terminal connection rtc-62421 (unit: mm) 23.1 max. 3.3 min. 0.2 min. 6.3 2.54 0.65 max. 1.27 0.35 2.8 max. 0.05 min. 4.2 max. 1 18 2 17 3 16 4 15 5 14 6 13 7 12 8 11 9 10 (v dd ) and v dd are to have the same level of voltage . do not connect it to any external terminals. nc is not connected internally. 1 24 2 23 3 22 4 21 5 20 6 19 7 18 8 17 9 16 10 15 11 14 12 13 rtc-62421 RTC-62423 RTC-62423 7.62 0.25 2.5 16.3 max. 7.9 12.2 max. 0.2 1.0 0.3 no. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 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 std. p cs 0 ale a 0 a 1 a 2 a 3 rd gnd wr d 3 d 2 d 1 d 0 cs 1 ( v dd ) ( v dd ) v dd 62423 std. p cs 0 nc ale a 0 nc a 1 nc a 2 a 3 rd gnd wr d 3 d 2 d 1 nc nc d 0 cs 1 nc ( v dd ) ( v dd ) v dd 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 built-in crystal unit allows adjustment-free efficient operation. low standby voltage and current consumption (1.8 a at 2 v). wide range of operating temperature (from -40 ? c to +85 ? c). 24 h/12 h 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 v i/o t stg t sol condition ta=+25 c rtc-62421 RTC-62423 rtc-62421 RTC-62423 specifications -0.3 to 7.0 -0.3 to v dd +0.3 -55 to +85 -55 to +125 under +260 c within 10 s (lead part) (package should be less than +150 c) twice at under +260 c within 10 s or under +230 c within 3 min. unit v c item operating voltage operating temperature data holding voltage cs 1 data holding time operation restoring time symbol v dd t opr v dh t cdr t r 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 c v s item frequency tolerance frequency temperature characteristics aging shock resistance current consumption symbol ? f/fo fa s.r. i dd1 i dd2 ta=+25 c v dd =5 v 62421 a 62421 b 62423 a 62423 condition three drops on a hard board from 750 mm or 29400 m/s 2 x 0.3 ms x 1/2 sine wave x 3 directions cs 1 =0 v v dd =5 v v dd =2 v specifications 10 50 20 50 +10/-120 +10/-220 5 max. 10 max. 30 max. 1.8 max. unit x 10 -6 x 10 -6 /year x 10 -6 a 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 v il1 i lk1 i lk2 v ol1 v oh v ol2 i offlk c 1 v ih2 v il2 condition v 1 =v dd /0 v i ol =2.5 ma i oh = -400 a i ol =2.5 ma v 1 =v dd /0 v input frequency 1 mhz v dd =2 to 5.5 v min. 2.2 2.4 4/5 v dd typ. 5 max. 0.8 1/-1 10/- 10 0.4 0.4 10 1/5 v dd unit v a v a pf v applicable terminal all inputs other than cs 1 input other than d 0 to d 3 d 0 to d 3 std.p cs 1 -10 c to +70 c (+25 c reference temperature) -40 c to +85 c (+25 c reference temperature) v dd =5 v, ta=+25 c, first year actual size
76 real time clock module cs 1 cs 0 or wr not occurred cs 1 1/5v dd v dd 4 v 4 v v ih 2 v ih 2 v il 2 v il 2 t cdr t r 2 to 4 v data storage mode interface possible with external terminals interface possible with external terminals data holding timing register table 32.768 khz wr rd d 3 d 2 d 1 d 0 a 3 a 2 a 1 a 0 cs 0 ale cs 1 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 s i to c f counter 1 hz reset bit stop bit hold bit busy bit 64 hz std.p 1 sec carry 1 minute carry 1 hour carry 30sec.adj bit 30sec. adj bit 24 / 12 bit s 1 s 10 d 1 d 10 m 10 h 1 h 10 y 1 y 10 w m 1 mo 10 mo 1 c d c e c f v dd switching characteristics read mode write mode v ih2 v ih2 v ih 1 v ih 1 v ih 1 v ih 1 v il 1 v il 1 v il 1 v il 1 v ih 1 v ih 1 v ih 1 v ih 1 v il 1 v ih 1 v il 1 cs 0 ale wr a 3 to a 0 d 3 to d 0 ( input ) t c1h t cis t as t rcv t ah t aw t wal t alw t ww t ds t dh cs 1 v ih2 v ih2 v ih 1 v il 1 v ih 1 v il 1 v il 1 v ih 1 v ih 1 v oh v ol v ih 1 v ih 1 v il 1 cs 0 ale rd a 3 to a 0 d 3 to d 0 ( output ) t cih t c1s t as t rcv t rd t dr t ah t alr cs 1 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. ( v dd = 5 v 0.5 v, ta = -40 c to + 85 c ) ( ale = while in use ) t aw t ral 0 1 2 3 4 5 6 7 8 9 a b c d e f a 3 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 a 2 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 a 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 a 0 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 name of register s 1 s 10 mi 1 mi 10 h 1 h 10 d 1 d 10 mo 1 mo 10 y 1 y 10 w c d c e c f d 3 s 8 ? mi 8 ? h 8 ? d 8 mo 8 y 8 y 80 ? 30 sec. adj t 1 test d 2 s 4 s 40 mi 4 mi 40 h 4 pm/am d 4 mo 4 ? y 4 y 40 w 4 irq flag t 0 24/12 d 1 s 2 s 20 mi 2 mi 20 h 2 h 20 d 2 d 20 mo 2 y 2 y 20 w 2 busy itrpt /stnd stop d 0 s 1 s 10 mi 1 mi 10 h 1 h 10 d 1 d 10 mo 1 mo 10 y 1 y 10 w 1 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 1 0 pm/am pm am 24/12 24 12 itrpt/stnd itrpt stnd bit name ? mark busy irq flag 24/12 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 cs 1 setup time cs 1 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 t cis t cih t as t ah t aw t alw t alr t wal t ral t ww t rd t dr t ds t dh t rcv condition c l =150 pf min. 1000 1000 25 25 40 10 10 20 10 120 0 100 10 60 max. 120 45 unit ns address ?
|
