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Real time clock module 4-bit MULTIFUNCTIONAL REAL TIME CLOCK MODULE
RTC-63421/63421M/63423
* * * * * *
Builtin crystal unit allows adjustment-free efficient operation. Alarm interruption of sec. to month and day of week possible. Provided with microcomputer compatible bus interface. Standard signal output selectable in a range of 10min. to 1024 Hz. Either sec. to hour and day of week or sec. to year and day of week is selectable. Reference area of time /alarm register is setabil. Provided with RAM bits. (marked on "" which is shown resister table) * Provided with START/STOP 30 second adjusting function. * Similar mounting method (RTC-63423) to the used for normal type SMD IC.
Actual size
Terminal connection
Model RTC-63421 RTC-63421M RTC-63423 Applicable CPU Intel bus system Motorola bus system "MOTEL" bus system
RTC-63421/63421M
18 17 16 15 14 13 12 11 10
Specifications (characteristics) Absolute Max. rating
Item Power source voltage Input voltage storage temperature Symbol Condition Ta=25C VDD VIN Ta=25C TSTG
RTC-63421 RTC-63421M
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.
Unit
1 2 3 4 5 6 7 8 9
V C
RTC-63423 RTC-63421 RTC-63421M RTC-63423
RTC-63423
24 23 22 21 20 19 18 17 16 15 14 13
Soldering condition
TSOL
Operating range
Item Operating voltage Operating temperature Data holding voltage CS 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
1 2 3 4 5 6 7 8 9 10 11 12
63423 No. 63421/63421M No. INTERRUPT 1 1 INTERRUPT CS0 2 2 CS0 ALE 3 3 ALARM A0 4 4 ALE A1 5 5 A0 A2 6 6 30sec.Adj A3 7 7 A1 RD (E 1) 8 8 68/80 GND 9 9 A2 10 WR (R/W 1) 10 A3 D3 11 11 RD (E 2) D2 12 12 GND D1 13 13 WR(R/W 2) D0 14 14 D3 CS1 15 15 D2 (VDD) 16 16 D1 (VDD) 17 17 1HZ VDD 18 18 D0 19 CS1 20 STOP/ START 21 NC (VDD) 22 (VDD) 23 24 VDD
1=63421M 2=Motorola bus system
(VDD) is to be same level as VDD. Do not connect it to any external terminals. NC is not connected internally.
Frequency characteristics and current consumption characteristics
Item Symbol Condition
63421A/63421MA
Specifications +15/-5 (510) +55/-45 (550) +55/-45 (550) +10/-120 +10/-220 5 max. 10 max. 30max. 1.8 max.
Unit
External dimensions RTC-63421/63421M
23.1 max.
(Unit: mm)
Frequency tolerance
f/fo
63423 Frequency temperature characteristics Aging Shock resistance Current consumption fa S.R. IDD 1 IDD 2
(25C reference temperature)
-10 to +70C
6.8
Ta=25C 63421B/63421MB VDD=5V 63423 A
+25/-15 (520) ppm
RTC63421 A EPSON 6051A
7.62 0.2 min.
-30 to +85C (25C reference temperature)
VDD=5V, Ta=25C, 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 A
4.2 max.
0.25 90 to 105
CS 1=0V
VDD=5V VDD=2V
RTC-63423
16.3 max.
Unless otherwise stated, characteristics (specifications) shown in the above table are based on the rated operating temperature and voltage condition.
RTC63423 A EPSON 6100
12.2 max.
7.9
3.3 min.
2.5
0.05 min.
2.8 max.
57
0.3
0 to 10
0.2
1.0
Real time clock module
Data hoiding timing
VDD 4V 2 to 4V CS1 VIL2 VIL Interface possible with external terminals CS1 1/5VDD Data holding mode VIL Interface possible with the external terminals 4V
Switching characteristics
Motorola bus system
Item
tR
VIH
( VDD = 5V 0.5V, Ta = 0 to + 70C )
Symbol tRWE tEHW tERW tELW tEC tDS tDH tRD tED Min. 100 220 20 220 500 180 20 -- 10 120 -- -- ns Max. Unit
tCDR
__ R/W, address setup time E "H" pulse width __ R/W, address hold time E "L" pulse width E cycle time
CS0 or WR not occurred
Register table
Symbol of register
R-S1 R-S10 R-MI1 R-MI10 R-H1 R-H10 R-D1 R-D10
Address
DATA setup time BANK 0 DATA hold time D0 r-S1 r-S10 r-mi1 r-mi10 r-h1 r-h10 r-d1 r-d10 r-mo1 r-mo10 r-y1 r-y10 r-w1
0 1 2 3 4 5 6 7 8 9 A B C D E F
D3 r-S8 r-mi8 r-h8 r-d8 r-mo8 r-y8 r-y80
D2 r-S4 r-S40 r-mi4 r-mi40 r-h4
D1 r-S2 r-S20 r-mi2 r-mi20 r-h2 r-h20 r-d2 r-d20 r-mo2 r-y2 r-y20 r-w2
Real time register name 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
E to data (CL=150pF) Data hold
Switching characteristics on the Intel bus system are the same as those for the RTC-6242 series.
___
r-PM/AM r-d4 r-mo4 r-y4 r-y40 r-w4
Write mode
R/W VIL1 VIL1
R-MO1 R-MO10
R-Y1 R-Y10 R-W CD CE CF
VIH1 A0 to A3 VIL1
VIH1
VIL1
IT/PLS2 IRQ FLAG0 BANK1 BANK0
IT/PLS1 RESET STOP
MASK2 IRQ FLAG2 30 sec. ADJ
MASK1 IRQ FLAG1 READ FLAG
tRWE
VIL1 VIH
tEHW
VIH1
tERW t ELW
VIL1 VIL
E
t DS
D0 to D3 VIH1 VIL1
t DH
VIH1 VIL1
Symbol of register
A-S1 A-S10 A-MI1 A-MI10 A-H1 A-H10 A-D1 A-D10
BANK 1 D3 a-S8 a-mi8 a-h8 a-d8 a-mo8 ae8 a-mo4 r-w4 ae4 D2 a-S4 a-S40 a-mi4 a-mi40 a-h4 D1 a-S2 a-S20 a-mi2 a-mi20 a-h2 a-h20 a-d2 a-d20 a-mo2 a-w2 ae2 TEST2 D0 a-S1 a-S10 a-mi1 a-mi10 a-h1 a-h10 a-d1 a-d10 a-mo1 a-mo10 a-w1 ae1 TEST1
t EC
Alarm register name 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 Week register Area define register Test register Control register D
Read mode
R/W VIH1 VIH1
___
a-PM/AM a-d4
A0 to A3
VIH1 VIL1
VIH1 VIL1
A-MO1 A-MO10
A-W
tRWE
VIL1 VIH1
tEHW
VIH1 VIL1
tERW t ELW
VIL
A-EMB
CC CD CE CF
E
HD/SFT
t RD
t ED
VOH1 VOL1 VOH1 VOL1
CY2 _ _ 24/12
CY1 CAL
CY0 DP
D0 to D3
Control register E Control register F
Same as BANK 0
t EC
58

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