77
Real time clock module
Absolute Max. rating
Specifications (characteristics)
Operating range
Frequency characteristics
DC characteristics
External dimensions
(Unit: mm)
Metal may be exposed on the top or bottom of this product. This won't affect any quality, reliability or electrical spec.
Terminal connection
No.
1
2
3
4
5
6
7
8
9
10
Pin terminal
V
DD2
VEX
FOE
AIRQ
TIRQ
CE
CLK
DI
DO
V
DD
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
GND
GND
FOUT
EEPROM Memory characteristics
R9701
1234A
E
1.5 Max.
5.4
1.3
(0.75)
(0.75)
7.0
0.3
6.2 Max.
0.65
0.22
0 Min
#20
#11
#1
#10
GND=0 V,V
DD
=2.7 V to 3.6 V,V
DD2
=1.8 V to 5.5 V,Ta=-40
C to +85
C
GND=0V,V
DD
=2.7 V to 3.6 V, V
DD2
=1.8 V to 5.5 V,Ta=-40
C to +85
C
RTC-9701JE
(VSOJ 20-pin)
RTC-9701JE
SERIAL REAL TIME CLOCK MODULE WITH EEPROM
RTC-9701JE
Item
Power voltage
Clock voltage
Analog voltage
Operating temperature
Symbol
V
DD
V
DD2
V
EX
T
OPR
Condition
V
DD
V
DD2
VEX
No condensation
Min.
2.7
1.8
1.4
-40
Max.
3.6
5.5
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
DD2
=3.0 V
Ta=+25 C, V
DD
=3.0 V
Ta=-10 C to +70 C, V
DD
=3.0 V,+25 C
Ta=+25 C,V
DD
=1.8 V to 5.5 V
Ta=+25 C,V
DD
=3.0 V, first year
Range
5 23
3 Max.
+10/-120
2.0
5.0
Unit
x 10
-6
s
x 10
-6
x 10
-6
/V
x 10
-6
/year
Item
V
DD
current
consumption
V
DD2
current
consumption
Input voltage
Input leakage
current
Pulldown
"H" Output voltage
"L" Output voltage
Leakage current
Symbol
I
DD1
I
DD2
I
BK1
I
BK2
V
IH
V
IL
I
LK
R
DWN
V
OH1
V
OH2
V
OL1
V
OL2
V
OL3
I
OZ
Condition
Min.
0.8V
DD
0
-0.5
75
V
DD
-0.4
V
DD
-0.4
GND
GND
GND
-0.5
Typ.
0.2
1.0
0.8
0.8
Max.
3.0
3.5
1.0
1.0
V
DD
0.2V
DD
0.5
600
GND+0.4
GND+0.4
GND+0.4
0.5
Unit
A
V
A
k
V
A
Built-in frequency adjusted 32.768 kHz crystal unit.
Include EEPROM 4 kbit (256 x 16 bit)User Memory.
Include High Precision Voltage Detector. (2.5 V 0.1 V)
Serial Interface which can be controlled by 4 or 3 signal lines.
Timer IRQ and Alarm IRQ function available.
32.768 kHz clock frequency Output. (CMOS OUTPUT)
Automatic adjustment for leap year.
Wide range of clock voltage between 1.8 V and 5.5 V.
Low backup current : 0.8 A / 3.0 V. (Typ.)
Actual size
Item
Supply voltage
Input voltage
Output voltage
Storage temperature
Symbol
V
DD,
V
DD2
V
IN
V
AIN
V
OUT
T
STG
Condition
V
DD
, V
DD2
to GND
Input Pin
VEX pin
AIRQ,TIRQ,FOUT,DO pins
Stored as bare proeduct after unpacking
Min.
-0.3
GND-0.3
-0.3
GND-0.3
-55
Max.
+6.0
V
DD
+0.3
+6.0
V
DD
+0.3
+125
Unit
V
C
V
DD
=3.0 V,F
OUT
output off
V
DD
=3.0 V,CL=0 pF,
F
OUT
=32.768 kHz output
V
DD2
=3.0 V,F
OUT
output off
V
DD2
=3.0 V,CL=0 pF,
F
OUT
=32.768 kHz output
CE,CLK,DI,FOE
CE,CLK,DI,FOE
V
IN
=V
DD
or GND
CE,FOE
I
OH
=-1 mA
I
OH
=-1 mA
I
OL
=1 mA
I
OL
=1 mA
AIRQ,TIRQ
I
OL
=2 mA
DO,AIRQ,TIRQ ,F
OUT
V
OUT
=V
DD
or GND
Memory contents
Program/Erase Cycle
Current consumption
Access time
Item
Symbol
I
DD3
t
WNV
Condition
EEPROM write
Min.
10
5
Typ.
1
5
Max.
3
10
Unit
bit
Times
mA
ms
4 k (256 x 16)
Product number (please refer to page 1)
Q 4 1 9 7 0 1 7 x 0 0 0 1 0 0
http://www.epsondevice.com
The details are mentioned in the application manual.
Please ask tighter tolerance.
78
Real time clock module
AC characteristics
Block diagram
RC Register table
EEPROM Table
Timing chart
BUS
INTERFACE
CIRCUIT
E
2
PROM
256 x 16 bit
FOUT CONTROLLER
INTERRUPTS
CONTROLLER
DIVIDER
FOUT
TIRQ
AIRQ
CLK
GND
VEX
V
DD
FOE
VLF
CE
DO
DI
TIMER REGISTER
ALARM REGISTER
CONTROL REGISTER
CLOCK and CALENDER
OSC
RTC
32.768 kHz
Control Line
t
CS
t
CR
t
CH
t
WH
t
WL
t
DH
t
DS
t
RZ
t
ZZ
t
ZZ
t
ZR
t
RD
t
RZ
Hi-
Z
Hi-
Z
t
RDY
m
3
m
3
m
2
m
2
a
0
a
0
d
7
d
6
d
5
d
0
d
7
d
6
d
5
d
0
t
ZR
Busy
Busy
Ready
Ready
t
r
t
f
t
CLK
V
TH
CE
CLK
DI
DO
Read
Write
DI
DO
V
DD2
V
I
V
O
80%
20%
Item
CLK clock cycle
CLK H Pulse Width
CLK L Pulse Width
CE setup time
CE hold time
Write data setup time
Write data hold time
Read data delay time
DO output mode switching time
DO output disable time
Ready setup time
Rise and fall time
Carry busy
FOUT duty ratio
Symbol
t
CLK
t
WH
t
WL
t
CS
t
CH
t
DS
t
DH
t
RD
t
ZR
t
RZ
t
RDY
t
RF
t
carry
t
W/t
Condition
Vth=0.5 V
DD
Vth=0.5 V
DD
Vth=0.5 V
DD
C
L
=65pF
10pF
C
L
=65pF
10pF
C
L
=65 pF
10pF R
L
=10 k
V
DD
:20% to 80 %
Xtal=32.768kHz
Vth=1/2 V
DD
V
DD
=3.0 V
Min.
500
230
230
110
170
150
150
170
40
Typ.
50
Max.
240
240
65
30
7.8125
60
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ms
%
Address
Function
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
SEC
MIN
HOUR
WEEK
DAY
MONTH
YEAR
Y100
MIN Alarm
HOUR Alarm
WEEK Alarm
DAY Alarm
Reserved
Interval Timer
Extension Register
Flag Register
Control Register
bit 7
--
--
--
--
--
--
Y 80
0
AE
AE
AE
TDUTY
TEST
VLF2
--
bit 6
S 40
M 40
--
W 6
--
--
Y 40
0
MA 40
--
WA 6
--
CT6
WADA
--
--
bit 5
S 20
M 20
H 20
W 5
D 20
--
Y 20
1
MA 20
HA 20
WA 5
DA 20
CT 5
UDUTY
UF
UIE
bit 4
S 10
M 10
H 10
W 4
D 10
C 10
Y 10
0
MA 10
HA 10
WA 4
DA 10
CT 4
USEL
TF
TIE
bit 3
S 8
M 8
H 8
W 3
D 8
C 8
Y 8
0
MA 8
HA 8
WA 3
DA 8
CT3
--
AF
AIE
bit 2
S 4
M 4
H 4
W 2
D 4
C 4
Y 4
0
MA 4
HA 4
WA 2
DA 4
CT 2
--
EXF
EXIE
bit 1
S 2
M 2
H 2
W 1
D 2
C 2
Y 2
0
MA 2
HA 2
WA 1
DA 2
CT 1
TSEL 1
VLF
VLIE
bit 0
S 1
M 1
H 1
W 0
D 1
C 1
Y 1
0
MA 1
HA 1
WA 0
DA 1
CT 0
TSEL 0
--
--
Segment
Address
0
00
FF
dF
dE
dD
dC
dB
dA
d9
d8
d7
d6
d5
d4
d3
d2
d1
d0
(GND=0 V, V
DD
=2.7 V to 3.6 V,V
DD2
=1.8 V to 5.5 V, Ta=-40 C to +85 C)
Data
User Memory
4 kbit (256 x 16 bit)
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