81
Real time clock module
  
 
 
 
 
(Unit: mm)
  !"  
No.
1
2
3
4
5
6
7
Pin terminal
GND
FOUT
N.C
N.C
N.C
N.C
VDD
No.
14
13
12
11
10
9
8
Pin terminal
FCON
CE1
DATA
CLK
TIRQ
AIRQ
CE0
No.
1
2
3
4
5
6
7
8
9
10
Pin terminal
VDD
FOUT
CE0
AIRQ
TIRQ
CLK
DATA
CE1
FCON
GND
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
N.C
#1 #7
#20 #11
#1 #10
#22 #14
#1 #11
#8#14
#"$%&'%
(SOP 14-pin)
#"$%&'%(
(VSOJ 20-pin)
#%&'%
)*+ %
7.4±0.2
3.2±0.1
1.2
1.270.35
5.03.1
10.1±0.2
0.15
0.6 0.05 Min.
0° to 10°
Metal may be exposed on the top or bottom of this product. This won't affect any quality, reliability or electrical spec.
#%&'%
)*+%,
1.5 Max.
5.4
1.3
(0.75) (0.75)
7.0±0.3
6.2 Max.
0.65 0.22 0 Min.
No.
1
2
3
4
5
6
7
8
9
10
11
Pin terminal
GND
FCON
N.C
CE1
DATA
CLK
TIRQ
AIRQ
CE0
FOUT
VDD
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
-
-
#"$%&'%-,
(SON 22-pin)
6.3 Max.
4.8
5.0±0.2
1.3
0.5 0.2
±0.1
#%&'%
)*+%
(GND=0 V, VDD=1.6 V to 5.5 V,Ta=-40 °C to +85 °C)
SERIAL REAL TIME CLOCK MODULE
RTC-4574SA/JE/NB
Item
Power voltage
Clock voltage
Operating temperature
Symbol
VDD
VCLK
VOPR
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
tSTA
Top
f/V
fa
Condition
Ta=+25 °C, VDD=3 V
Ta=+25 °C,VDD=1.6
V
Ta=-10 °C to +70 °C,
Reference at +25 °C
Ta=+25 °C,VDD=1.6 to 5.5 V
Ta=+25
°C
, VDD=3 V
Range
3 Max.
+10
-120
±2
±5
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
Output leakage current
Symbol
IDD1
IDD2
VIH
VIL
ILK
RDWN1
RDWN2
VOH1
VOH2
VOH3
VOL1
VOL2
VOL3
VOL4
VOL5
IOZ
VDD=5 V
VDD=3 V
VDD=5 V
VDD=3 V
VDD=5 V
VDD=3 V
VDD=5 V
VDD=3 V
VDD=5 V
VDD=3 V
CE0,CE1=GND
CE0,CE1,CLK,
DATA,FCON pins
VIN=GND or VDD
CE1, CLK FCON pins
IOH=-1 mA
DATA,FOUT pins
IOL=1 mA
AIRQ, TIRQ pins
IOL=1 mA
DATA,FOUT pins
Min.
—
0.8VDD
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
VDD+0.3
0.2VDD
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
µA
V
µA
kΩ
V
µA
• 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 .
•
Dedicated interrupt output of the two systems (alarm and regular cycle) which allows software masking.
• Ability to detect stopping of oscillation and time update.
• Automatic adjustment for leap year.
•
Wide range of interface voltage and clock voltage between 1.6 V and 5.5 V
.
• Low power consumption at 0.5 µA/3 V. (Typ.)
Actual size
V
OUT
=GND or V
DD
,
DATA
, AIRQ, TIRQ pins
Item
Supply voltage
Input voltage
Output voltage
Storage temperature
Symbol
VDD
VIN
VOUT1
VOUT2
TSTG
Condition
VDD to GND
Input Pin
TIRQ
____
,AIRQ
____
FOUT,DATA
Stored as bare product
after unpacking
Min.
-0.3
GND-0.3
-55
Max.
+7.0
VDD+0.3
+8.0
VDD+0.3
+125
Unit
V
°C
∗Please ask tighter tolerance.
CE0 pins
VIN=VDD
IOL=100 µA
DATA,FOUT pins
IOH=-100 µA
DATA,FOUT pins
DATA
, AIRQ, TIRQ V
DD
5±23∗
The details are mentioned in the application manual.
http://www.epsondevice.com
Product number (please refer to page 2)
Q4145745x000200 Q4145747x000100
Q4145749xxxxx00
RTC-4574SA RTC-4574JE RTC-4574NB
Condition
82
Real time clock module
AC characteristics
Register table
Timing chart
tCH
tRF
tRF
tWL
tCLK
tDS tDH
D0 D1 D6 D7 D0 D6 D7
D0 D1 D6 D7 D0 D6 D7
tWZ tRD tRZ
tWHtCS tCR
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 %
0 : Always set this bit to
“0”.
Block diagram
Bus interface circuit
Output controller
Divider
FOUT
TIRQ
AIRQ
DATA
CLK
FCON
CE1
CE0
Clock and Calendar
Timer register
Alarm register
Control register
Shift register
Interrupts controller
OSC
32.768 kHz Control line
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
Week Alarm
Day Alarm
FOUT control
Timer interrupt control
Count Down Timer
Control 1
Control 2
bit 7
fos
fr
fr
fr
fr
fr
Year80
AE
AE
AE
AE
FE
TE
Timer128
0
0
bit 6
S40
Min40
0
W6
0
0
Year40
A-Min40
∗
A-W6
∗
∗
∗
Timer64
0
TEST
bit 5
S20
Min20
Hour20
W5
Day20
0
Year20
A-Min20
A-Hr20
A-W5
A-Day20
FD4
TD1
Timer32
0
STOP
bit 4
S10
Min10
Hour10
W4
Day10
Month10
Year10
A-Min10
A-Hr10
A-W4
A-Day10
FD3
TD0
Timer16
TI/TP
RESET
bit 3
S8
Min8
Hour8
W3
Day8
Month8
Year8
A-Min8
A-Hr8
A-W3
A-Day8
∗
∗
Timer8
AF
HOLD
bit 2
S4
Min4
Hour4
W2
Day4
Month4
Year4
A-Min4
A-Hr4
A-W2
A-Day4
FD2
∗
Timer4
TF
0
bit 1
S2
Min2
Hour2
W1
Day2
Month2
Year2
A-Min2
A-Hr2
A-W1
A-Day2
FD1
∗
Timer2
AIE
0
bit 0
S1
Min1
Hour1
W0
Day1
Month1
Year1
A-Min1
A-Hr1
A-W0
A-Day1
FD0
∗
Timer1
TIE
0
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
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
RD
t
RZ
t
RF
Duty
Control
—
CL=50 pF
CL=50 pF
RL=10 kΩ
—
Min.
800
400
600
100
80
0
—
35
Max.
—
300
200
100
65
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 V±10 %
V
DD
=5.0 V±10 %