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參數(shù)資料
| 型號(hào)： | RA-8581SA |
| 元件分類(lèi)： | XO, clock |
| 英文描述： | 0 TIMER(S), REAL TIME CLOCK, PDSO14 |
| 封裝： | SOP-14 |
| 文件頁(yè)數(shù)： | 1/2頁(yè) |
| 文件大?。?/td> | 523K |
| 代理商： | RA-8581SA |
http://www.epsontoyocom.co.jp
Real time clock module
Epson Toyocom
Actual size
Block diagram
Overview
CLOCK
and
CALENDAR
TIMER
REGISTER
ALARM
REGISTER
FOUT
CONTROLLER
CONTROL
REGISTER
and
SYSTEM
CONTROLLER
DIVIDER
INTERRUPTS
CONTROLLER
I2C-BUS
INTERFACE
CIRCUIT
OSC
32.768 kHz
FOUT
FOE
/ INT
SCL
SDA
Interface Type
I
2C-Bus interface. ( Hi-speed bus specifications 400 kHz )
I2C-Bus slave address : read A3h and write A2h
32.768 kHz frequency output function
FOUT pin output (C-MOS output ), CL=30 pF
32.768 kHz clock frequency output. (Duty 50 ±5%)
Timer function
Timer interrupt function can be set up between
1/4096 second and 4095 minutes.
It is recorded automatic to TF-bit at the time of event
occurrence,and possible to output with /TIRQ pin output
(N-ch open-drain output).
Interrupt function
Alarm interrupt function, Time update interrupt function.
Pin Function
Terminal connection / External dimensions
(Unit:mm)
Signal Name
Input / Output
Function
SCL
Input
Serial clock input pin
SDA
Bi-directional
Data input and output pin
FOUT
Output
FOE
Input
FOUT pin outputs the reference clock signal at 32.768 kHz.
FOE pin inputs the FOUT output control.
FO E p in
inpu t
F O U T pi n
outp ut
HI G H
Ou t p u t
( C- M O S )
LO W
OF F
( LO W )
/INT
Output
Interrupt output
( N-ch open drain )
VDD
-
Connected to a positive power supply.
GND
-
Connected to a ground.
RA
8581 SA
1.
N.C.
14.
FOUT
2.
SCL
13.
N.C.
3.
SDA
12.
N.C.
4.
N.C.
11.
VDD
5.
GND
10.
FOE
6.
N.C.
9.
N.C.
7.
/ INT
10
.1
±
0.
2
5.0
7.4 ± 0.2
3.
2
±
0.
1
1.
27
8.
N.C.
SOP
14 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
-
1.8
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
FOUT output Duty
tw / t
Ta = -40
°C to +85 °C
VDD = 2.4 V to 5.5 V
50
± 5
%
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
0.65
1.2
IBK
fSCL = 0 Hz
FOE = GND
FOUT ;Output OFF
( LOW )
VDD
= 3 V
0.45
0.8
A
VDD
= 5 V
8.0
20.0
Current
Consumption
I32k
fSCL = 0 Hz
FOE = VDD
FOUT ;
32.768 kHz Output ON
CL = 30 pF
VDD
= 3 V
5.0
12.0
A
For Automotive
I
2C-Bus INTERFACE REAL TIME CLOCK MODULE
RA - 8581 SA
Built-in frequency adjusted 32.768 kHz crystal unit.
Interface Type
: I
2C-Bus Interface (400 kHz)
Operating voltage range
: 1.8 V to 5.5 V
Wide Timekeeper voltage range : 1.6 V to 5.5 V
Low backup current
: 0.45
A / 3 V (Typ.)
32.768 kHz frequency output function : C-MOS output With Control Pin
The various functions include full calendar, alarm, timer.
Conforms to AEC-Q200
* The I
2C-Bus is a trademark of NXP Semiconductors
Product Number (Please contact us)
RA-8581SA : Q41A88151xxxx00
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