rtc-4574 Epson Electronics America, Inc., rtc-4574 Datasheet
rtc-4574
Manufacturer Part Number
rtc-4574
Description
Serial-interface Real Time Clock Module
Manufacturer
Epson Electronics America, Inc.
Datasheet
1.RTC-4574.pdf
(2 pages)
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Part Number
Manufacturer
Quantity
Price
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Part Number:
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Part Number:
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REAL
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! ! ! !
Power voltage
Clock voltage
Operating
! ! ! !
Frequency
Oscillation
SERIAL-INTERFACE REAL TIME CLOCK MODULE
RTC - 4574 SA
FOUT
FCON
/ TIRQ
/ AIRQ
DATA
CLK
CE 1
CE 0
1.
2.
3.
4.
5.
6.
7.
Please ask for tighter tolerance.(Equivalent to 1 minute of monthly deviation)
temperature
tolerance
start-up time
Specifications (characteristics)
Frequency characteristics
Built in frequency adjusted 32.768 kHz crystal unit.
Interface Type
Operating voltage range
Wide Timekeeper voltage range
Low backup current
32.768 kHz frequency output function : C-MOS output With Control Pin
The various functions include full calendar, alarm, timer.
Terminal connection / External dimensions
Recommended Operating Conditions
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 14 pin
Symbol
Symbol
V
T
7.4
V
t
OPR
STA
4574 SA
CLK
5.0
DD
f / f
0 .2
32.768 kHz
OUTPUT
INTERRUPTS
OSC
T
V
T
V
BUS
a
DD
a
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 w ill 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
: 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
NB
V
FOUT
CE0
/ AIRQ
/ TIRQ
CLK
DATA
CE1
FCON
GND
DD
Unit
Unit
°C
10
V
V
s
CONTROL LINE
RTC
6
VSOJ 20 pin
6.0
4574 JE
5.4
0.2
Actual size
RTC-4574SA
! ! ! !
Current
Consumption
1.5
Current consumption characteristics
Max.
Item
Functions are compatible with RX - 4574 LC.
20.
19.
18.
17.
16.
15.
14.
13.
12.
11.
Timer function
32.768 kHz frequency output 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.
Product Number (Please contact us)
RTC-4574SA : Q41457451000200
RTC-4574JE : Q41457471000100
RTC-4574NB : Q41457491000100
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.
T
1.0
0.5
8.0
5.0
1.3
a
= -40 C to +85 C
0.1
Max. Unit
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.
µA
µA
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rtc-4574 Summary of contents
Page 1
... Epson Toyocom Epson Toyocom Epson Toyocom Epson Toyocom Product Number (Please contact us) RTC-4574SA : Q41457451000200 RTC-4574JE : Q41457471000100 RTC-4574NB : Q41457491000100 RTC-4574JE RTC-4574NB Overview • FOUT pin output (C-MOS output ), CL=30 pF • Output frequency selectable from1/ 32.768 kHz (32 Values) • Timer function can be set up between 1/4096 second and 255 minutes. • ...
Page 2
EPSON TOYOCOM In order to meet customer needs in a rapidly advancing digital, broadband and ubiquitous society, we are committed to offering products that are one step ahead of the market and a rank above the rest in quality. ...