85
Real time clock module
86
Real time clock module
SERIAL-INTERFACE REAL TIME CLOCK MODULE
RTC-4543SA / SB
Product number (please refer to page 5)
Q4145435x000200 Q4145436x000200
• Built-in crystal unit allows adjustment-free efficient operation.
• Automatic leap year correction.
• Output selectable between 32.768 kHz / 1 Hz.
• Supply voltage detection voltage: 1.7 V ±0.3 V.
• Available for lead (Pb) - free soldering.
• Available for lead (Pb) - free terminal.
Specifications (characteristics)
Absolute Max. rating
Item Symbol Condition Min. Max. Unit
Supply voltage VDD VDD to GND
-0.3
7.0
VInput voltage VIN −VDD +0.3
Output voltage VOUT −
Storage temperature TSTG Stored as bare product
after unpacking -55 +125 °C
Operating range
Item Symbol Condition Min. Max. Unit
Power voltage VDD − 2.5 5.5 V
Clock voltage VCLK − 1.4
Operating temperature VOPR No condensation -40 +85 °C
Frequency characteristics
Item Symbol Condition Range Unit
Frequency tolerance Δf/f Ta = +25 °C, VDD = 5 V
B: 5 ±23∗
x 10-6
Oscillation start-up time
tSTA Ta = +25 °C, VDD = 2.5 3 Max. s
Frequency temperature
characteristics Top
Ta = -10 °C to +70 °C
Reference at +25 °C
+10 / -120
x 10-6
Frequency voltage
characteristics
f/V
Ta = +25 °C, VDD = 2.0 V to 5.5 V
±2.0
x 10-6 / V
Aging fa
First year Ta = +25 °C, VDD = 5 V
±5.0
x 10-6 / year
∗ Please ask tighter tolerance.
DC characteristics
(VDD = 5 V ±0.5 V, Ta = -40
°C
to +85
°C
)
Item
Symbol
Condition Min. Typ. Max.
Unit
Current
consumption
1 IDD1
VDD = 5.0 V
CE =”L”, FOE =”L”
FSEL =”H”
−
1.5 3.0
µA
2 IDD2
VDD = 3.0 V
1.0 2.0
3 IDD3
VDD = 2.0 V
0.5 1.0
4 IDD4
VDD = 5.0 V
CE =”L”, FOE =”H”
FSEL =”L”
No load on the FOUT pin
4.0 10.0
5 IDD5
VDD = 3.0 V
2.5 6.5
6 IDD6
VDD = 2.0 V
1.5 4.0
“H” input voltage VIH WR, DATA, CE, CLK,
FOE, FSEL pins
0.8 VDD
−V
“L” input voltage VIL −
0.2VDD
“H” output voltage VOH1
VDD = 5.0 V I
____
OH = -1.0 mA
DATA, FOUT pins
4.5 −
V
VOH2
VDD = 3.0 V
2.5
“L” output voltage VOL1
VDD = 5.0 V IOL = 1.0 mA
DATA, FOUT pins
−0.5
VOL2
VDD = 3.0 V
0.8
Supply detection voltage
VDT 1.4 1.7 2.0 V
Output load conditions
CLFOUT pin − − 30
pF
N 2LS-TTL
Terminal connection
#1 #7
#14 #8
#1
#18
#9
#10
No.
1
2
3
4
5
6
7
Pin terminal
GND
N.C
CE
FSEL
WR
FOE
N.C
No.
14
13
12
11
10
9
8
Pin terminal
FOUT
N.C
N.C
DATA
CLK
VDD
N.C
No.
1
2
3
4
5
6
7
8
9
Pin terminal
N.C
N.C
N.C
N.C
FOE
WR
FSEL
CE
GND
No.
18
17
16
15
14
13
12
11
10
Pin terminal
N.C
N.C
N.C
N.C
VDD
N.C
CLK
DATA
FOUT
External dimensions (Unit: mm)
7.4±0.2
3.2±0.1 5.0
3.1
10.1±0.2
0.15
0.6
1.27 0.35 0.05 Min.
0° to
10°
(SOP 14-pin)
Metal may be exposed on the top or bottom of this product. This won't affect any quality, reliability or electrical spec.
(SOP 18-pin)
0.4
1.27
7.8±0.2
2.0 Max.
5.4
1.8
11.4±0.2
0.15
0.6 0 Min.
0° to 10°
Actual size
RTC-4543SBRTC-4543SA
The details are mentioned in the application manual.
