rx-8581je Epson Electronics America, Inc., rx-8581je Datasheet
rx-8581je
Manufacturer Part Number
rx-8581je
Description
I2c-bus Interface Real Time Clock Module
Manufacturer
Epson Electronics America, Inc.
Datasheet
1.RX-8581JE.pdf
(1 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
rx-8581je:B3 ROHS
Manufacturer:
Epson
Quantity:
1 803
FOUT
FOE
/ INT
SCL
SDA
! ! ! !
Power voltage
Clock voltage
Operating
! ! ! !
Frequency
FOUT output Duty
I
RX - 8581 SA
Please ask for tighter tolerance. ( Equivalent to 1 minute of monthly deviation )
1.
2.
3.
4.
5.
6.
7.
2
temperature
tolerance
C-Bus INTERFACE REAL TIME CLOCK MODULE
Block diagram
Terminal connection / External dimensions
Specifications (characteristics)
* The I
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.
Recommended Operating Conditions
Frequency characteristics
Real time clock module
Real time clock module
Real time clock module
Real time clock module
N.C.
SCL
SDA
N.C.
GND
N.C.
/ INT
Item
Item
2
C-Bus is a trademark of NXP Semiconductors
32.768 kHz
OSC
RX
SOP
Symbol
Symbol
T
V
7.4
tw / t
V
OPR
8581 SA
CLK
5.0
DD
f / f
14 pin
0.2
T
V
T
V
FOUT
INTERRUPTS
I
a
a
DD
DD
2
C-BUS
= +25 C
= -40 C to +85 C
Condition
INTERFACE
CONTROLLER
CONTROLLER
= 3.0 V
= 2.4 V to 5.5 V
DIVIDER
-
-
-
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.
CIRCUIT
FOUT
N.C.
N.C.
V
FOE
N.C.
N.C.
DD
: I
: 1.8 V to 5.5 V
: 0.45 A / 3 V (Typ.)
2
/
C-Bus Interface (400 kHz)
Min.
1.8
1.6
-40
JE
Typ.
+25
3.0
3.0
/
Rating
5 23
http://www.epsontoyocom.co.jp
50
CLOCK
10.
NB
TIMER
ALARM
CONTROL
SYSTEM
1.
2.
3.
4.
5.
6.
7.
8.
9.
CONTROLLER
Max.
5
+85
5.5
5.5
and
N.C.
N.C.
FOE
V
FOUT
SCL
SDA
( V
GND
/ INT
DD
CALENDAR
REGISTER
REGISTER
REGISTER
and
DD
)
Unit
Unit
10
%
V
V
C
RX
6
VSOJ
6.0
8581 JE
5.4
20 pin
0.2
Actual size
RX-8581SA
! ! ! !
Current
Consumption
1.5
Current consumption characteristics
Max.
Item
20.
19.
18.
17.
16.
15.
14.
13.
12.
11.
Symbol
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
32.768 kHz frequency output function
Timer function
Interrupt function
I
I
32k
Interface Type
BK
Overview
RX-8581JE
• I
• FOUT pin output (C-MOS output ), CL=30 pF
• 32.768 kHz clock frequency output. (Duty 50 ±5 %)
• Timer interrupt function can be set up between
• It is recorded automatic to TF-bit at the time of event
• Alarm interrupt function, Time update interrupt function.
1/4096 second and 4095 minutes.
occurrence,and possible to output with /TIRQ pin output
(N-ch open-drain output).
f
FOE = GND
FOUT ;
output OFF ( LOW )
f
FOE = V
FOUT ;
32.768 kHz output ON
CL = 30 pF
2
C-Bus interface. ( Hi-speed bus specifications 400 kHz )
SCL
SCL
I
2
C-Bus slave address : read A3h and write A2h
= 0 Hz
= 0 Hz
DD
10.
11.
Condition
1.
2.
3.
4.
5.
6.
7.
8.
9.
Refer to application manual for details.
/ INT
GND
( V
N.C.
SDA
SCL
FOUT
V
FOE
N.C.
N.C.
DD
DD
RX-8581NB
)
V
V
V
V
Epson Toyocom
Epson Toyocom
Epson Toyocom
Epson Toyocom
DD
DD
DD
DD
= 5 V
= 3 V
= 5 V
= 3 V
RX
SON
5.0
8581 NB
Min.
4.8
22 pin
0.2
1.3
Typ.
0.65
0.45
T
8.0
5.0
a
= -40 C to +85 C
0.1
Max.
17.
22.
21.
20.
19.
18.
16.
15.
14.
13.
12.
20.0
12.0
1.2
0.8
(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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