79
Real time clock module
Absolute Max. rating
Specifications (characteristics)
Operating range
Frequency characteristics
DC characteristics
(Unit: mm)
External dimensions/Terminal connection
No.
1
2
3
4
5
6
7
8
9
10
Pin terminal
V
DD
F
OUT
CE
AIRQ
TIRQ
CLK
DATA
FOE
VTEMP
SOFF
No.
20
19
18
17
16
15
14
13
12
11
Pin terminal
N.C
N.C
N.C
N.C
N.C
N.C
N.C
N.C
N.C
GND
Temperature sensor characteristics
GND=0 V,Ta=-40
C to +85
C
R4701
1234A
E
1.5 Max.
5.4
1.3
(0.75)
(0.75)
7.0
0.3
6.2 Max
0.65
0.22
No.
1
2
3
4
5
6
7
8
9
10
11
Pin terminal
GND
SOFF
VTEMP
FOE
DATA
CLK
TIRQ
AIRQ
CE
F
OUT
V
DD
No.
22
21
20
19
18
17
16
15
14
13
12
Pin terminal
N.C
N.C
N.C
N.C
N.C
N.C
N.C
N.C
N.C
--
--
No.
1
2
3
4
5
Pin terminal
CE
CLK
DATA
SOFF
GND
No.
10
9
8
7
6
Pin terminal
V
DD
VTEMP
IRQ
FOE
FOUT
E4702
123A
5.0
0.2
1.0
0.26
0.4
3.2
0.2
#10
#6
#1
#5
1.2 Max.
0.6
0.35
(GND=0 V, V
DD
=1.6 V to 5.5 V,Ta=-40
C to +85
C)
Please ask tighter tolerance.
RTC-4701JE
(VSOJ 20-pin)
RTC-4701NB
(SON 22-pin)
RX-4702CF
(SON 10-pin)
Metal may be exposed on the top or bottom of this product. This won't affect any quality, reliability or electrical spec.
6.3 Max.
4.8
5.0
0.2
1.3
0.5
0.2
0.1
R4701
1234A
E
SERIAL REAL TIME CLOCK MODULE WITH TEMPERATURE SENSOR
RTC-4701JE/NB RX- 4702CF
Item
Power voltage
Clock voltage
Operating temperature
Symbol
V
DD
V
CLK
V
OPR
Condition
--
--
No condensation
Min.
1.6
-40
Max.
5.5
+85
Unit
V
C
Item
Frequency tolerance
Oscillation start up time
Frequency temperature
characteristics
Frequency voltage characteristics
Aging
Symbol
f/fo
t
STA
T
op
f/V
fa
Condition
Ta=+25 C, V
DD
=3 V
Ta=+25 C,V
DD
=3.0 V
Ta=-10 to +70 C,
Reference at +25 C
Ta=+25 C,V
DD
=1.6 to 5.5 V
Ta=+25 C, V
DD
=3 V
Range
3 Max.
+10
-120
2 Max.
5 Max.
Unit
x 10
-6
s
x 10
-6
x 10
-6
/V
x 10
-6
/year
Item
Standby current 1
Standby current 2
Input voltage
Input leakage current
Pulldown R1
Pulldown R2
Output voltage 1
Output voltage 2
Leakage current
Symbol
I
DD1
I
DD2
V
IH
V
IL
I
LK
R
DWN1
R
DWN2
V
OH1
V
OH2
V
OH3
V
OL1
V
OL2
V
OL3
V
OL4
V
OL5
I
OZ
V
DD
=5 V
V
DD
=3 V
V
DD
=5 V
V
DD
=3 V
V
DD
=5 V
V
DD
=3 V
V
DD
=5 V
V
DD
=3 V
V
DD
=5 V
V
DD
=3 V
CE,FOE,SOFF=GND
AIRQ,TIRQ,IRQ=V
DD
32.768 kHz output is OFF.
Sensor output is OFF.
Condition
I
OH
=-
1 mA
DATA,F
OUT
pins
I
OL
=
1 mA
AIRQ, TIRQ, IRQ pins
I
OL
=
1 mA
DATA,F
OUT
pins
Min.
--
0.8V
DD
GND-0.3
-0.5
75
150
4.5
2.0
2.9
GND
-0.5
Typ.
1.0
0.5
--
150
300
--
Max.
2.0
1.0
V
DD
+0.3
0.2V
DD
0.5
300
600
5.0
3.0
GND+0.5
GND+0.8
GND+0.1
GND+0.25
GND+0.4
0.5
Unit
A
V
A
k
V
A
Built-in crystal unit allows adjustment-free efficient operation.
Serial interface which can be controlled by three signal lines.
Alarm interrupt function for day of week, day, hour, and minute.
Timer interrupt function which can be set up between 1/4096 second and
255 minutes . (Except for RX-4702CF)
OVF interrupt function based on 12-bit additional counter.
Ability to detect stopping of oscillation and time update.
Automatic adjustment for leap year.
Built-in temperature sensor.(voltage output RTC-4701JE/NB :-7.6 mV/ C Typ. RX-4702CF :-7.8 mV/ C Typ.)
Wide range of voltage between 1.6 V and 5.5 V.
Low power consumption at 0.5 A/3 V. (Typ.)
Actual size
V
OUT
=GND or V
DD
,
FOUT,DATA
, AIRQ, TIRQ, IRQ pins
Item
Supply voltage
Input voltage
Output voltage
Storage temperature
Symbol
V
DD
V
IN
V
OUT1
V
OUT2
T
STG
Condition
V
DD
to GND
Input Pin
TIRQ, AIRQ, IRQ
F
OUT,
DATA
Stored as bare product
after unpacking
Min.
-0.3
GND-0.3
-55
Max.
+7.0
V
DD
+0.3
+8.0
V
DD
+0.3
+125
Unit
V
C
CE pins
V
IN
=V
DD
I
OL
=
100
A
DATA,F
OUT
pins
I
OH
=-
100
A
DATA,F
OUT
pins
523
CE,CLK,DATA,
FOE,SOFF
CLK,DATA,FOE,SOFF
V
IN
=V
DD
or GND
Temperature output
voltage
Output precision
Temperature
sensitivity
Linearity
Output resistance
Parameter
Symbol
V
TEMP
T
ACR
V
SE
NL
Ro
Condition
Min.
-7.1
-7.3
RTC-4701JE/NB
RX-4702CF
Typ.
1.48
-7.6
-7.8
1.0
Max.
5.0
-8.1
-8.3
2.0
3.0
Unit
V
C
mV/C
%
k
Ta=+25 C, GND based
output voltage VTEMP
pin, V
DD
=2.7 V to 5.5 V
Ta=+25 C, VTEMP pin,
V
DD
=2.7 V to 5.5 V GND
standard and V
DD
standard
-40 C Ta +85 C,
V
DD
=2.7 V to 5.5 V
-40 C Ta +85 C,VDD=2.7 to 5.5 V
Ta=+25 C, V
DD
=2.7 V to 5.5 V
The details are mentioned in the application manual.
http://www.epsondevice.com
Product number (please refer to page 2)
Q4 1 4 7 0 1 7 x 0 0 0 2 0 0
Q4 1 4 7 0 2Ax x x x x 0 0
Q 4 1 4 7 0 1 9 x 0 0 0 2 0 0
RTC-4701JE
RTC-4701NB
RX-4702CF
V
TEMP
SOFF
Block diagram
Bus interface circuit
Fout controller
Divider
Temperature
Sensor
F
OUT
DATA
CLK
F
OE
CE
TIRQ
IRQ
AIRQ
Clock and Calendar
Timer register
Alarm register
Control register
and
System Controller
Degital Trimming register
Interrupts controller
OSC
32.768 kHz
Control line
4701JE/NB
4701JE/NB
4702CF
80
Real time clock module
RX-4702CF : BANK0
RTC-4701 JE/NB : BANK0
Register table
AC characteristics
RTC-4701 JE/NB : BANK1
Timing chart
t
CH
t
RF
t
RF
t
WL
t
CLK
t
DS
t
DH
D0
D1
D6
D7
D0
D6
D7
D0
D1
D6
D7
D0
D6
D7
t
WZ
t
RZ
t
RD
t
WH
t
CS
t
CR
CE
CLK
DATA
Data Read
DATA
Data Write
50 %
50 %
10 %
90 %
90 %
(Write data)
(Read data)
From here the DATA pin turns into the output mode.
(Setup code, setup address)
(Setup code, setup address)
10 %
t
DO
0 : Always set this bit to
"0".
Registers 0 to A are the same in BANK0 and BANK1.
Address
Register symbol
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
Sec
Min
Hour
Day of Week
Day
Month
Year
Minutes Alarm
Hours Alarm
Day of week Alarm
Day Alarm
Timer setup
Timer Couner
Control 1
Control 2
bit 7
fos
fr
fr
fr
fr
fr
Year 80
AE
AE
AE
AE
TE
128
0
0
bit 6
S 40
Min 40
0
W 6
0
C
Year 40
A-Min 40
A-W 6
64
0
TEST
bit 5
S 20
Min 20
Hour 20
W 5
Day 20
0
Year 20
A-Min 20
A-Hr 20
A-W 5
A-Day 20
TD
1
32
0
STOP
bit 4
S 10
Min 10
Hour 10
W 4
Day 10
Month 10
Year 10
A-Min 10
A-Hr 10
A-W 4
A-Day 10
TD
0
16
TI/TP
RESET
bit 3
S 8
Min 8
Hour 8
W 3
Day 8
Month 8
Year 8
A-Min 8
A-Hr 8
A-W 3
A-Day 8
8
AF
HOLD
bit 2
S 4
Min4
Hour4
W 2
Day 4
Month 4
Year 4
A-Min 4
A-Hr 4
A-W 2
A-Day 4
4
TF
0
bit 1
S 2
Min 2
Hour 2
W 1
Day 2
Month 2
Year 2
A-Min 2
A-Hr 2
A-W 1
A-Day 2
2
AIE
0
bit 0
S 1
Min 1
Hour 1
W 0
Day 1
Month 1
Year 1
A-Min 1
A-Hr 1
A-W 0
A-Day 1
1
TIE
0
Address
Register symbol
B
C
D
E
F
Additional counter 1
Additional counter 2
Control 3
Control 1
Control 2
bit 7
128
fr
FOES
0
0
bit 6
64
AC1
TEST1
0
TEST0
bit 5
32
AC0
0
0
STOP
bit 4
16
OVF
0
0
RESET
bit 3
8
2048
AF
HOLD
bit 2
4
1024
ACIE
0
0
bit 1
2
512
ACE
AIE
0
bit 0
1
256
SON
0
0
Address
Register symbol
B
C
D
E
F
Additional counter 1
Additional counter 2
Control 3
bit 7
128
fr
FOES
bit 6
64
AC1
TEST
bit 5
32
AC0
bit 4
16
OVF
bit 3
8
2048
bit 2
4
1024
ACIE
bit 1
2
512
ACE
bit 0
1
256
SON
Item
CLK clock cycle
CLK H Pulse Width
CLK L Pulse Width
CE setup time
CE hold time
CE recovery time
Write data setup time
Write data hold time
Write data disable delay time
Output mode switching time
Read data delay time
Output disable time
Rise and fall time
FOUT duty ratio
(32.768 kHz output)
Symbol
t
CLK
t
WH
t
WL
t
CS
t
CH
t
CR
t
DS
t
DH
t
WZ
t
DO
t
RD
t
RZ
t
RF
Duty
Control
--
C
L
=50 pF
C
L
=50 pF
R
L
=10 k
--
Min.
600
300
400
75
0
--
40
Max.
--
300
200
100
60
Min.
350
175
300
50
0
--
40
Max.
--
120
100
50
60
Unit
ns
%
(GND=0 V,Ta=-40 C to +85 C)
V
DD
=3.0 V10 % V
DD
=5.0 V10 %
PDF 
ZIP