RTC62421 Datasheet, PDF (1/2 Pages) Epson Company – 4-bit REAL TIME CLOCK MODULE

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 (1.8µA at 2V).
• Wide range of operating temperature (from -40˚C to +85˚C).
• 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
Soldering condition
TSOL
Condition
Ta=25˚C
RTC-62421
RTC-62423
RTC-62421
RTC-62423
Specifications
-0.3 to 7.0
-0.3 to VDD+0.3
-55 to +85
-55 to +125
Under 260˚C within 10 sec.
(lead part) (package should
be less than 150˚C)
Twice at under 260˚C within
10 sec. or under 230˚C
within 3 min.
Unit
V
˚C
Operating range
Item
Operating voltage
Symbol
VDD
Condition
Specifications Unit
4.5 to 5.5
V
Operating temperature
TOPR
-40 to +85
˚C
Data holding voltage
VDH
2.0 to 5.5
V
CS1 data holding time
tCDR _{Refer to the data}
Operation restoring time tR
holding timing
2.0 min.
µs
Frequency characteristics and current consumption
characteristics
Item
Symbol
Condition
Specifications Unit
62421 A
±10
Frequency tolerance
Frequency temperature
characteristics
Aging
Shock resistance
∆f/fo
fa
S.R.
Ta=25˚C 62421 B
VDD=5V _{62423 A}
62423
-10 to +70˚C
(25˚C reference temperature)
-40 to +85˚C
(25˚C reference temperature)
VDD=5V, Ta=25˚C,
first year
Three drops on a
hard board from 75 cm
or 3000G x 0.3ms x 1/2 sine
wave x 3 directions
±50
±20
±50
+10/-120
+10/-220
±5 max.
±10 max.
ppm
ppm/Y
ppm
Current consumption
IDD1
CS1=0V ^VDD=5V
30 max.
µA
IDD2
VDD=2V
1.8 max.
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
Symbol Condition
VIH1
—
VIL1
Min. Typ. Max.
2.2
—
0.8
Unit
V
Applicable
terminal
All inputs
other than
CS1
ILK1 _{V1=VDD/0V —}
1/-1
Input other
µA ^{than D0 to D3}
ILK2
— 10/-10
VOL1 IOL=2.5mA
0.4
D0 to D3
VOH IOH=-400µA 2.4
—V
“L” output voltage (2)
OFF leak current
Input capacity
“H” input voltage (2)
“L” input voltage (2)
VOL2 IOL=2.5mA
0.4
IOFFLK V1=VDD/0V —
10 µA
C1
VIH2
VIL2
Input
frequency 1 MHz
5
VDD=2 to 5.5V ^{4/5 VDD} —
—
—
1/5 VDD
pF
V
STD.P
CS1
63
Terminal connection
RTC-62421
No. 62421 No.
1
STD. P 1
18 17 16 15 14 13 12 11 10
2
CS0
2
3
ALE
3
4
A0
4
5
A1
5
6
A2
6
7
A3
7
8
RD
8
9
GND
9
1 2 3 4 56 7 8 9
10
WR
10
11
D3
11
RTC-62423
12
D2
12
13
D1
13
24 23 22 21 20 19 18 17 16 15 14 13
14
D0
14
15
CS1
15
16
(VDD) 16
17
(VDD) 17
18
VDD
18
19
20
21
22
23
24
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.
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
External dimensions
RTC- 62421
23.1 max.
(Unit: mm)
RTC62421 A
EPSON 6053 C
7.62
0.25
90° to
105°
RTC- 62423
16.3 max.
RTC62423 A
EPSON 9220
0° to
10°
1.0