94
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"! #$%&%' (unit: mm) 23.1 max. 3.3 min. 0.2 min. 6.3 4.2 #1 #18 #9 #10 "! $%&%' () '%*& "! $%&%* () '%*& (v dd ) and v dd are to have the same level of voltage . do not connect it to any external terminals. nc is not connected internally. #1 #24 #12 #13 "! #$%&%' "! #$%&%* "! #$%&%* 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. 1 2 3 4 5 6 7 8 9 pin terminal std. p cs 0 ale a 0 a 1 a 2 a 3 rd gnd no. 18 17 16 15 14 13 12 11 10 pin terminal v dd ( v dd ) ( v dd ) cs 1 d 0 d 1 d 2 d 3 wr no. 1 2 3 4 5 6 7 8 9 10 11 12 pin terminal std. p cs 0 nc ale a 0 nc a 1 nc a 2 a 3 rd gnd no. 24 23 22 21 20 19 18 17 16 15 14 13 pin terminal v dd ( v dd ) ( v dd ) nc cs 1 d 0 nc nc d 1 d 2 d 3 wr item frequency tolerance frequency temperature characteristics frequency voltage characteristics aging item current consumption ??input voltage (1) ??input voltage (1) input leak current (1) input leak current (2) ??output voltage (1) ??output voltage ??output voltage (2) off leak current input capacity ??input voltage (2) ??input voltage (2) symbol ? f/fo t op f/v fa symbol i dd1 i dd2 v ih1 v il1 i lk1 i lk2 v ol1 v oh v ol2 i offlk c 1 v ih2 v il2 min. 2.2 2.4 4/5 v dd typ. 1 0.9 10 20 max. 10 5 0.8 1 10 0.4 0.4 10 1/5 v dd unit a v a v a pf v d 0 to d 3 std.p d 0 to d 3 cs 1 input other than d 0 to d 3 input other than d 0 to d 3 all inputs other than cs 1 applicable terminal 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 condition range 10 50 20 50 +10/-120 +10/-220 5 max. 5 max. unit x 10 -6 x 10 -6 /v x 10 -6 /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 cs 1 =0 v exclude input/ output current v dd =5 v v dd =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 v dd v i/o t stg condition ta=+25 ? ta=+25 ? 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 v dd v clk t opr 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) q4272 4 21xxxxx00 q4272 4 23xxxxx00 real time clock module ? stored as bare product after unpacking ? no condensation rtc-72423 rtc-72421
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