rtc-4574sa Epson Electronics America, Inc., rtc-4574sa Datasheet
rtc-4574sa
Manufacturer Part Number
rtc-4574sa
Description
Serial-interface Real Time Clock Module
Manufacturer
Epson Electronics America, Inc.
Datasheet
1.RTC-4574SA.pdf
(1 pages)
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! ! ! !
Power voltage
Clock voltage
Operating
! ! ! !
Frequency
Oscillation
SERIAL-INTERFACE REAL TIME CLOCK MODULE
RTC - 4574 SA
1.
2.
3.
4.
5.
6.
7.
FOUT
FCON
/ TIRQ
/ AIRQ
DATA
CLK
CE 1
CE 0
Please ask for tighter tolerance.(Equivalent to 1 minute of monthly deviation)
temperature
tolerance
start-up time
Specifications (characteristics)
Built in frequency adjusted 32.768 kHz crystal unit.
Interface Type
Operating voltage range
Wide Timekeeper voltage range : 1.6 V to 5.5 V
Low backup current
32.768 kHz frequency output function : C-MOS output With Control Pin
The various functions include full calendar, alarm, timer.
Frequency characteristics
Recommended Operating Conditions
Terminal connection / External dimensions
Real time clock module
Real time clock module
Real time clock module
Real time clock module
Block diagram
GND
FOUT
N.C.
N.C.
N.C.
N.C.
V
DD
Item
Item
RTC
SOP
Symbol
Symbol
T
V
7.4
V
t
STA
OPR
4574 SA
CLK
5.0
DD
f / f
14 pin
0.2
32.768 kHz
OUTPUT
INTERRUPTS
OSC
T
V
T
V
BUS
a
a
DD
DD
= +25 °C
= +25 °C
INTERFACE
Condition
CONTROLLER
CONTROLLER
= 3.0 V
= 1.6 V
CIRCUIT
-
-
-
14.
13.
12.
11.
10.
Condition
9.
8.
Metal may be exposed on the top or bottom of this product. This will not affect any quality, reliability or electrical spec.
DIVIDER
FCON
CE1
DATA
CLK
/ TIRQ
/ AIRQ
CE0
: 3-wire serial interface
: 1.6 V to 5.5 V
: 0.5 A / 3 V ( Typ. )
Min.
1.6
1.6
40
/
JE
Typ.
+25
3.0
3.0
CLOCK and
TIMER
ALARM
CONTROL
SHIFT REGISTER
3 Max.
Rating
5 23
http://www.epsontoyocom.co.jp
10.
1.
2.
3.
4.
5.
6.
7.
8.
9.
/
Max.
+85
CALENDAR
5.5
5.5
REGISTER
REGISTER
REGISTER
V
FOUT
CE0
/ AIRQ
/ TIRQ
CLK
DATA
CE1
FCON
GND
NB
DD
Unit
Unit
°C
10
V
V
s
RTC
CONTROL LINE
6
VSOJ
6.0
4574 JE
5.4
20 pin
0.2
Actual size
RTC-4574SA
! ! ! !
Current
Consumption
1.5
Current consumption characteristics
Max.
Item
20.
19.
18.
17.
16.
15.
14.
13.
12.
11.
Functions are compatible with RX - 4574 LC.
32.768 kHz frequency output function
Timer function
Alarm function
Overview
Symbol
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
• FOUT pin output (C-MOS output ), CL=30 pF
• Output frequency selectable from1/30 Hz to 32.768 kHz
• Timer function can be set up between 1/4096 second and
• It is recorded automatically to TF-bit at the time of event
• Selectable one time mode or repeat mode.
• Alarm function can be set to any combination of day of week,
• It is recorded automatically to AF-bit at the time of event
255 minutes.
occurrence, and it’s possible to output with /TIRQ pin output
(open-drain output).
hour, or minute.
occurrence, and it’s possible to output with /AIRQ pin
output (open-drain output).
I
I
32k
BK
RTC-4574JE
CE0, CE1 = GND
FOUT ;output OFF
CE0 = GND
CE1 = V
FOUT ;
32.768 kHzoutput ON
CL = 30 pF
(32 Values)
( Hi - z )
DD
Condition
10.
11.
1.
2.
3.
4.
5.
6.
7.
8.
9.
Refer to application manual for details.
GND
FCON
N.C.
CE1
DATA
CLK
/ TIRQ
/ AIRQ
CE0
FOUT
V
DD
RTC-4574NB
Epson Toyocom
Epson Toyocom
Epson Toyocom
Epson Toyocom
V
V
V
V
RTC
= 5 V
= 3 V
= 5 V
= 3 V
DD
DD
DD
DD
SON
5.0
Min.
4574 NB
4.8
22 pin
0.2
Typ.
1.3
T
1.0
0.5
8.0
5.0
a
= -40 C to +85 C
0.1
Max.
20.0
12.0
2.0
1.0
22.
21.
20.
19.
18.
17.
16.
15.
14.
13.
12.
(Unit:mm)
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
Unit
µA
µA
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