Real time clock module
Product Number (Please contact us)
RTC-7301SF : Q42730182000200
RTC-7301DG : Q42730112000200
REAL TIME CLOCK MODULE (4-bit)
RTC-7301SF DG
/
Built-in crystal unit 32.768 kHz with frequency adjusted
Frequency selectable clock output (32.768 kHz to 1/30 Hz)
Built-in 30 second adjustment function, digital pace adjustment function
(Max. adjustment: 192 10-6)
Built-in alarm and timer interrupt functions.
Built-in semiconductor temperature sensor
(Voltage output: -7.8 mV / C, RTC-7301SF)
Operating voltage range:2.4 V to 5.5 V,
Actual size
time keeping voltage range: 1.6 V to 5.5 V
Low current consumption (0.6 A / 3 V Typ.)
RTC-7301SF
RTC-7301DG
High speed parallel interface compatible with SRAM
Block diagram
32.768 kHz
Control Line
This is a block diagram for RTC-7301SF.
Digital Trimming
REGISTER
DIVIDER
OSC
1
Be aware that RTC-7301DG differs according to the following 2 points.
Temperature
Sensor
CLOCK
and
VTEMP
CALENDAR
1
FOUT
1) The VTEMP output is not connected to an external pin.
2) The FCON input pin is not connected to an external pin,
but is fixed at "H" internally.
TIMER
REGISTER
2
7301SF
7301DG
FOUT
CONTROLLER
FCON
/ IRQ
ALARM
REGISTER
INTERRUPTS
CONTROLLER
A0 A3
CONTROL
REGISTER
and
SYSTEM
CONTROLLER
D0 D3
BUS
INTERFACE
CIRCUIT
/ W R
/ RD
/ CS0
CS1
External dimensions/Terminal connection
(Unit:mm)
RTC-7301SF (SSOP 24-pin)
RTC-7301DG (DIP 18-pin)
No.
Pin
terminal
/CS0
FOUT
/IRQ
A0
A1
A2
A3
/RD
GND
No.
Pin
terminal
No.
Pin
terminal
No.
Pin
terminal
10.2
0.3
23.1 Max.
1
2
3
4
5
6
7
8
9
18
17
16
15
14
13
12
11
10
VDD
(VDD)
(VDD)
CS1
D0
D1
D2
D3
/WR
1
2
3
4
5
6
7
8
9
/CS0
FCON
FOUT
VTEMP
(VDD)
/IRQ
A0
A1
A2
A3
/RD
GND
24
23
22
21
20
19
18
17
16
15
14
13
VDD
(VDD)
(VDD)
(VDD)
(VDD)
(VDD)
CS1
D0
D1
D2
D3
/WR
#24
#13
#18
#10
RTC7301
R7301
E 123 4A
E
123 4A
5.4
#1
#9
10
11
12
#1
#12
7.62
0.2
Min.
4.2
0.15
2.0 Max.
Min.
Max.
1.52
0.46
2.54
Min.
0
0 - 10
0.5
0.8
0.36
2.54
0.25
0 -15
The metal case inside of the molding compound may be exposed on the top or bottom of this product.
This purely cosmetic and does not have any effect on quality, reliability or electrical specs.
Specifications (characteristics)
*Refer to application manual for details.
■Absolute Max. rating
GND=0 V
Unit
■DC characteristics
(GND=0 V,VDD=1.6 V to 5.5 V,Ta=-40 C to +85 C)
Item
Symbol
VDD
Conditions
VDD to GND
Input terminal,
D0 to D3 pins
/IRQ pin
Min.
-0.3
Max.
+7.0
Item
Symbol
Conditions
Min.
Typ. Max.
Unit
Supply voltage
/CS0,/RD,/WR=VDD
A0-A3,CS1=GND
D0-D3,/IRQ=Hi-z
FOUT=Hi-z(OFF)
VTEMP=Hi-z(OFF)
Current consumption
(When non-accessed)
FOUT =Output OFF
VTEMP=Output OFF
IDD1
VDD=5 V
VDD=3 V
1.0
0.6
2.0
1.0
Input voltage
VIN
VDD+0.3
V
A
GND-0.3
-55
Output voltage(1) VOUT1
Output voltage(2) VOUT2
+8.0
IDD2
FOUT,D0-D3,VTEMP pin
VDD+0.3
Storage
temperature
Note)There is no VTEMP pin on the RTC-7301DG so standards for
the VTEMP pin within the conditions described above do not apply.
TSTG
Stored as bare product.
+125
C
■Operating range
GND = 0 V
■Temperature sensor characteristics
GND=0 V,Ta=-40 C to +85 C
Item
Symbol
VDD
Conditions
Min.
2.4
1.6
Max.
5.5
Unit
V
Item
Symbol
Conditions
Min.
Typ. Max.
Unit
Power voltage
Clock voltage
Operating
Temperature
output voltage
Ta=+25 C,GND based output voltage
VTEMP pins,VDD=2.7 V to 5.5 V
VTEMP
-
1.470
-
-
V
VCLK
TOPR
No condensation
-40
+85
Output precision
TACR
VSE
Ta=+25 °C,VDD=2.7 V to 5.5 V
-
C
5.0
-8.3
C
temperature
Temperature
sensitivity
Linearity
Temperature
detection range
-7.3
-
-7.8
-40 CTa+85 C,VDD=2.7 V to 5.5 V
-40 CTa+85 C,VDD=2.7 V to 5.5 V
NL ±2.0 %,VDD=2.7 V to 5.5 V
mV/ C
%
■Frequency characteristics
-
-
Item
Frequency
Symbol
Conditions
Range
Unit
10-6
NL
2.0
1)
*
TSOP
-40
+85
f /f
Ta=+25 C,VDD=3.0 V
Ta=+25 C,VDD=2.4 V
B:523 (
C
precision
Oscillation
Start up time
Frequency
temperature
characteristics
Frequency
3.0 Max.
s
Ta=25 C,VTEMP pins,VDD=2.7 V to 5.5 V
t
STA
Output resistance
Load condition
Response time
R0
-
1.0
3.0
k
GND standard and VDD standard
Ta=-10 C to +70 C
VDD=3.0 V ,+25 C
10-6
TOP
+10 / -120
CL
RL
VDD=2.7 V to 5.5 V
VDD=2.7 V to 5.5 V
-
-
-
100
-
pF
Ta=+25 C,
VDD=1.6 V to 5.5 V
Ta=+25 C,
10-6/V
k
f/V
fa
500
2.0 Max.
5.0 Max.
voltage characteristics
10-6/year
VDD=3.3 V
CL=50 pF, RL=500 k, Max. 1 °C
Aging
VDD=3.0 V First year
-
-
200
s
t
RSP
(*1) Please ask tighter tolerance
Note)There is no temperature sensor function on the RTC-7301DG.
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