RTC-62421 Datasheet, PDF (1/2 Pages) Epson ToYoCom – 4-bit REAL TIME CLOCK MODULE

Real time clock module
4-bit REAL TIME CLOCK MODULE
RTC - 62421
RTC - 62423
•Built-in crystal unit allows adjustment-free efficient operation.
•24 h /12 h changeable and leap year automatically adjustable
(Gregorian calendar).
•Pins and functions are compatible with the MSM6242 series.
Actual size
RTC-62421
Epson Toyocom
Product Number (Please contact us)
RTC-62421 : Q42624211xxxx00
RTC-62423 : Q42624231xxxx00
RTC-62423
Block diagram
D3
D2
D1
D0
WR
RD
A3
A2
A1
A0
CS0
ALE
CS1
Ga t e
Ga t e
OSC
Co un t er
RE SE T
b it
3 0 s ec A DJ
b it
S TOP
b it
S1
HO L D ^{BUS Y}
b it
b it
S1 0
M I1 M I10
2 4/ 1 2
bi t
H 1 H10
W
L a tch
S1 t o CF
De co de r
D1 D10
MO1 MO10
Y1 Y10
O ut p ut
S e le cto r
VDD
64 Hz
1 S econd carry
CD
CE
CF
1 M in u te c a rry
1 Hour carry
S TD.P
Terminal connection/External dimensions ç
RTC-62421 (D IP 18-pin)
23.1 Max.
#18
#10
RTC62421 A
EPSO N 1234A
#1
#9
No. Pin
te rm in a l
1 STD.P
2 /C S0
3 ALE
4 A0
5 A1
6 A2
7 A3
8 /R D
9 GND
N o. Pin
te rm in a l
18 VDD
17 (VDD)
16 (VDD)
15 CS1
14 C0
13 D1
12 D2
11 D3
10 /W R
7 .62
R TC-62423 (SOP 24-pin)
16.3 Max.
# 24
#13
RT C6 24 2 3
EPSON 1234A
#1
#12
(Unit:mm)ç
No. Pin
t erm i na l
1 STD .P
2 /CS0
3 N .C .
4 ALE
5 A0
6 N .C .
7 A1
8 N .C .
9 A2
10 A3
11 /RD
12 GN D
No. Pin
te rm i na l
24 VDD
23 (VDD)
22 (VDD)
21 N .C .
20 CS1
19 D0
18 N .C .
17 N .C .
16 D1
15 D2
14 D3
13 /WR
1.52
0.46
2.54
0.2 4.2
Min. Max.
3.3
M in .
0° -15°
0.25
0.2
2.8 Max.
1.27
0.35
0.1 Min.
1.0
0° - 10°
M etal may be exposed on the top or bottom of th is product. This w ill not affect any quality, relia bility or electrical spec.
Specifications (characteristics)
Absolute Max. rating
Item
Sym bol
Condition
Min.
Supply voltage
Input voltage
Storage
temperature *
VDD
VI/ O
TSTG
Ta=+25 °C
Ta=+25 °C
RTC-62421
RTC-62423
-0.3
GND-0.3
-55
-55
*Stored as bare product after unpacking
Operating range
Item
Sym bol
Condition
Min.
Power voltage VDD
-
4.5
Clock voltage VCLK
-
2.0
Operating
tem perature
TOPR
Stored as bare product
after unpacking
-40
Frequency characteristics
Item
Sym bol
Condition
Frequency
precis ion
∆f /f
Frequency
temperature
TOP
ch a ra cte ri sti cs
Frequency voltage
ch a ra cte ri sti cs
f/V
Aging
fa
62421A
Ta=+25 °C
VDD=5.0 V
62421B
62423A
62423
-10 °C to +70 °C (+25 °C)
-40 °C to +85 °C(+25 °C)
Ta=+25 °C,VDD=4.5 V to 5.5 V
Ta=+25 °C,VDD=5.0 V,First year
Ma x.
+7.0
VDD+0.3
+85
+125
Ma x.
5.5
5.5
+85
Range
±10
±50
±20
±50
+10 / -120
+10 / -220
±5.0 Max.
±5.0 Max.
Unit
V
°C
Unit
V
°C
Unit
×10^-6
DC characteristics
Item
Sym bol
Current consumption ^IDD1
IDD2
HIGH input voltage (1) VIH1
LOW input voltage (1) VIL1
LOW output voltage (1) VOL1
HIGH output voltage VOH
*Refer to application manual for details.
Condition
Min. Typ. Ma x. Unit Applicable terminal
CS1= 0 V
VDD=5 V
VDD=2 V
-
15
1
30
1.8
µA
-
-
-
2.2
-
V ^{All inputs other than}
-
0.8
CS1
IOL=2.5 mA
IOH=-400 µA
-
0.4
2.4 ^-
-
V
D0 to D3
LOW output voltage (2) VOL2
IOL=2.5 mA
0.4
OFF leak current IOFFLK
V1=VDD/0 V
-
10/-10 µA
Input capacity
C1 Input frequency 1 MH z
5
pF
HIGH input voltage (2) VIH2
4/5 VDD
-
VDD=2.0 V to 5.5 V
-
V
LOW input voltage (2) VIL2
-
1/5 VDD
STD.P
Input Pins
CS1
Input leak current (1) ILK1
V1=VDD/0 V
-
Input leak current (2) ILK2
1/-1 _µA
10/-10
Input other than
D0 to D3
D0 to D3
×10^-6/V
×10^-6/year
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