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参数资料
| 型号： | RTC-4574SA |
| 元件分类： | 时钟/数据恢复及定时提取 |
| 英文描述： | 0 TIMER(S), REAL TIME CLOCK, PDSO14 |
| 封装： | SOP-14 |
| 文件页数： | 1/2页 |
| 文件大小： | 673K |
| 代理商： | RTC-4574SA |
Actual size
http://www.epsontoyocom.co.jp
Real time clock module
Epson Toyocom
Block diagram
Overview
BUS
INTERFACE
CIRCUIT
CE 1
CLK
DATA
32.768 kHz
CE 0
CONTROL
REGISTER
SHIFT REGISTER
ALARM
REGISTER
TIMER
REGISTER
CLOCK and
CALENDAR
INTERRUPTS
CONTROLLER
OUTPUT
CONTROLLER
DIVIDER
CONTROL LINE
FOUT
/ TIRQ
/ AIRQ
OSC
FCON
32.768 kHz frequency output function
FOUT pin output (C-MOS output ), CL=30 pF
Output frequency selectable from1/30 Hz to 32.768 kHz
(32 Values)
Timer function
Timer function can be set up between 1/4096 second and
255 minutes.
It is recorded automatically to TF-bit at the time of event
occurrence, and it’s possible to output with /TIRQ pin
output
(open-drain output).
Selectable one time mode or repeat mode.
Alarm function
Alarm function can be set to any combination of day of week,
hour, or minute.
It is recorded automatically to AF-bit at the time of event
occurrence, and it’s possible to output with /AIRQ pin
output (open-drain output).
Functions are compatible with RX - 4574 LC.
Terminal connection / External dimensions
(Unit:mm)
RTC
4574 SA
1.
GND
14.
FCON
2.
FOUT
13.
CE1
3.
N.C.
12.
DATA
4.
N.C.
11.
CLK
5.
N.C.
10.
/ TIRQ
6.
N.C.
9.
/ AIRQ
7.
VDD
10
.1
±
0.
2
5.0
7.4 ± 0.2
3.
2
±
0.
1
1.
27
8.
CE0
SOP
14 pin
RTC
4574 JE
1.
VDD
20.
N.C.
2.
FOUT
19.
N.C.
3.
CE0
18.
N.C.
4.
/ AIRQ
17.
N.C.
5.
/ TIRQ
16.
N.C.
6.
CLK
15.
N.C.
7.
DATA
14.
N.C.
8.
CE1
13.
N.C.
9.
FCON
12.
N.C.
10.
GND
7.
0
±
0.
3
5.4
6.0
± 0.2
1.5 Max.
0.
65
11.
N.C.
VSOJ
20 pin
RTC
4574 NB
1.
GND
22.
N.C.
2.
FCON
21.
N.C.
3.
N.C.
20.
N.C.
4.
CE1
19.
N.C.
5.
DATA
18.
N.C.
6.
CLK
17.
N.C.
7.
/ TIRQ
16.
N.C.
8.
/ AIRQ
15.
N.C.
9.
CE0
14.
N.C.
10.
FOUT
13.
11.
VDD
4.8
6.
3
Ma
x
.
5.0 ± 0.2
0.
5
1.3 ± 0.1
12.
SON
22 pin
Metal may be exposed on the top or bottom of this product. This will not affect any quality, reliability or electrical spec.
Specifications (characteristics)
Refer to application manual for details.
Recommended Operating Conditions
Item
Symbol
Condition
Min.
Typ.
Max.
Unit
Power voltage
VDD
-
1.6
3.0
5.5
V
Clock voltage
VCLK
-
1.6
3.0
5.5
V
Operating
temperature
TOPR
-
40
+25
+85
°C
Frequency characteristics
Item
Symbol
Condition
Rating
Unit
Frequency
tolerance
f / f
Ta = +25 °C
VDD = 3.0 V
5
± 23
× 106
Oscillation
start-up time
tSTA
Ta = +25 °C
VDD = 1.6 V
3 Max.
s
Please ask for tighter tolerance.(Equivalent to 1 minute of monthly deviation)
Current consumption characteristics
Ta = -40
°C to +85 °C
Item
Symbol
Condition
Min.
Typ.
Max.
Unit
VDD
= 5 V
1.0
2.0
IBK
CE0, CE1 = GND
FOUT ;output OFF
( Hi - z )
VDD
= 3 V
0.5
1.0
A
VDD
= 5 V
8.0
20.0
Current
Consumption
I32k
CE0 = GND
CE1 = VDD
FOUT ;
32.768 kHzoutput ON
CL = 30 pF
VDD
= 3 V
5.0
12.0
A
SERIAL-INTERFACE REAL TIME CLOCK MODULE
RTC - 4574 SA / JE / NB
Built in frequency adjusted 32.768 kHz crystal unit.
Interface Type
: 3-wire serial interface
Operating voltage range
: 1.6 V to 5.5 V
Wide Timekeeper voltage range
: 1.6 V to 5.5 V
Low backup current
: 0.5
A / 3 V ( Typ. )
32.768 kHz frequency output function : C-MOS output With Control Pin
The various functions include full calendar, alarm, timer.
RTC-4574JE
RTC-4574NB
RTC-4574SA
Product Number (Please contact us)
RTC-4574SA : Q41457451000200
RTC-4574JE : Q41457471000100
RTC-4574NB : Q41457491000100
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| RTC-4574JE | 0 TIMER(S), REAL TIME CLOCK, PDSO20 |
| RTC-4574NBB-0 | REAL TIME CLOCK, PDSO22 |
| RTC-4574SAB-0 | 0 TIMER(S), REAL TIME CLOCK, PDSO14 |
| RTC-4574NBB-3 | REAL TIME CLOCK, PDSO22 |
| RTC-4574NBB-3 | REAL TIME CLOCK, PDSO22 |
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