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RA-8565SA:B3:ROHS

更新时间： 2024-11-26 06:38:59
品牌 Logo 应用领域
精工 - SEIKO /
页数 文件大小 规格书
1页 447K
描述
MEMORY REFRESH TIMER

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中文翻译

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RA-8565SA:B3:ROHS 数据手册

  
Real time clock module  
Epson Toyocom  
For Automotive  
I2C-Bus INTERFACE REAL TIME CLOCK MODULE  
RA- 8565 SA  
•Built in frequency adjusted 32.768 kHz crystal unit.  
•Interface Type  
•Wide operating voltage range  
: I2C-Bus Interface (400 kHz)  
: 1.8 V to 5.5 V  
•Wide Timekeeper voltage range  
: 1.7 V to 5.5 V  
T
a
= −40 °C to +125 °C  
•
Extended operating temperature range: −40 °C to +125 °C  
•32.768 kHz frequency output function: N-ch Open drain output  
With Control Pin  
Actual size  
•The various functions include full calendar, alarm, timer,etc  
* The I2C-Bus is a trademark of NXP Semiconductors  
Block diagram  
Overview  
• Wide operating temperature range for automotive  
! −40 °C to +125 °C  
32.768 kHz  
CRYSTAL  
Control 1  
Control 2  
00  
OSC  
Voltage Detector  
DIVIDER  
Seconds  
• Clocking-status detection function  
Minutes  
! It can judge the validity of data after backup  
operation return by a status of VL-bit.  
Hours  
CLKOUT  
CLKOE  
OUTPUT  
Days  
CONTROL  
Weekdays  
Month  
• 32.768kHz frequency output function  
! CLKOUT pin output (N-ch Open Drain output )  
! Output frequency can be selected  
Years  
/ INT  
Minutes Alarm  
Hour Alarm  
Day Alarm  
Weekday Alarm  
CLKOUT frequency  
Timer Control  
Timer  
CONTROL  
LOGIC  
as 32.768kHz, 1024Hz, 32Hz, or 1Hz.  
I2C-BUS  
SCL  
SDA  
• The various interrupt function  
! Timer function can be set up between  
1/4096 second and 255 minutes.  
! Alarm function can be set to day of week,  
day, hour, or minute.  
INTERFACE  
ADDRESS  
REGISTER  
0F  
POR  
Pin Function  
Terminal connection / External dimensions  
(Unit:mm)  
−
RA 8565 SA  
1. N.C.  
2. SCL  
3. SDA  
4. N.C.  
5. GND  
6. N.C.  
7. / INT  
14. CLKOUT  
Terminal  
Directions  
Input  
Functions  
SCL  
SDA  
Serial clock input.  
13. N.C.  
12. N.C.  
DD  
Bi-directional Data input and output.  
The CLKOUT pin is a clock output ( open drain output ) pin  
with control output. ( Output frequency can be selected  
as 32.768 kHz, 1024 Hz, 32 Hz, or 1 Hz. )  
The CLKOE pin is an input pin used to control the output  
mode of the CLKOUT output pin.  
During the initial power-on ( when power is applied from 0 V ) ,  
if the CLKOE input pin is at high level ( = H ) ,  
the power-on reset function selects 32.768 kHz as the frequency.  
CLKOUT  
CLKOE  
Output  
Input  
11.  
V
5.0  
10. CLKOE  
9. N.C.  
/INT  
VDD  
Output  
−
−
Interrupts output by Alarm and Timer events. ( Open drain output )  
Connected to a positive power supply.  
± 0.2  
7.4  
8. N.C.  
GND  
Connected to a ground.  
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.  
"
"
Current consumption under backup mode.  
Recommended Operating Conditions  
Item  
Symbol  
Conditions  
Min.  
1.8  
Typ.  
3.0  
Max.  
5.5  
unit  
V
Item  
Symbol  
Conditions  
Min.  
Typ.  
0.95  
Max.  
1.80  
unit  
Operating  
voltage  
Timekeeper  
voltage  
Operating  
temperature  
DD  
V
−
−
−
a
T
T
T
T
=
SCL  
f
= 0 Hz  
°
+125 C  
CLK  
V
1.7  
3.0  
5.5  
V
CLKOE = LOW  
µ
A
A
OPR  
T
−
40  
°
+25  
+125  
C
DD  
V
= 5 V  
a
a
a
=
0.60  
0.80  
0.55  
°
+25  
C
"
Frequency characteristics  
Standby  
current.  
BK  
I
Item  
Symbol  
Conditions  
Rating  
unit  
=
a
°
C
T
= +25  
Frequency  
stability  
SCL  
f
1
−6  
= 0 Hz  
CLKOE = LOW  
1.60  
∆
±
×
f / f  
5
23  
10  
s
°
+125 C  
DD  
V
a
= 3.0 V  
°
T
= +25  
C
µ
1.5 Max.  
3 Max.  
DD  
Oscilation  
start up time  
V
= 1.8 V  
DD  
V
= 3 V  
STA  
t
=
a
−
°
°
C
T
V
=
40 C to +125  
s
°
+25  
C
DD  
= 3.0 V  
1 )  
Equivalent to 1 minutes of monthly deviation.  
http://www.epsontoyocom.co.jp  
1

中文翻译

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 		I2C-Bus INTERFACE REAL TIME CLOCK MODULE
RA-8581SA:B:PURESN SEIKO

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 		REAL TIME CLOCK, PDSO14, ROHS COMPLIANT, SOP-14
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 		REAL TIME CLOCK, PDSO14, ROHS COMPLIANT, SOP-14
RA-8581SA:B3 SEIKO

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 		Real Time Clock, Volatile, CMOS, PDSO14, ROHS COMPLIANT, SOP-14
RA-8581SA:B3:PURESN SEIKO

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 		REAL TIME CLOCK, PDSO14, ROHS COMPLIANT, SOP-14
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