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參數(shù)資料
| 型號(hào)： | RA-8565SA |
| 廠商： | EPSON TOYOCOM CORP |
| 元件分類： | 時(shí)鐘/數(shù)據(jù)恢復(fù)及定時(shí)提取 |
| 英文描述： | REAL TIME CLOCK, PDSO14 |
| 封裝： | ROHS COMPLIANT, SOP-14 |
| 文件頁數(shù)： | 1/2頁 |
| 文件大?。?/td> | 542K |
| 代理商： | RA-8565SA |
http://www.epsontoyocom.co.jp
Real time clock module
Epson Toyocom
Actual size
Block diagram
Overview
Control 1
Seconds
Minutes
Hours
Days
Month
Control 2
Weekdays
Years
Minutes Alarm
Hour Alarm
Day Alarm
Weekday Alarm
Timer Control
CLKOUT frequency
Timer
00
0F
OUTPUT
CONTROL
LOGIC
POR
OSC
32.768 kHz
CRYSTAL
CLKOUT
CLKOE
DIVIDER
Voltage Detector
ADDRESS
REGISTER
I
2
C-BUS
INTERFACE
/ INT
SCL
SDA
Wide operating temperature range for automotive
!
40 °C to +125 °C
Clocking-status detection function
! It can judge the validity of data after backup
operation return by a status of VL-bit.
32.768kHz frequency output function
! CLKOUT pin output (N-ch Open Drain output )
! Output frequency can be selected
as 32.768kHz, 1024Hz, 32Hz, or 1Hz.
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.
Pin Function
Terminal connection / External dimensions
(Unit:mm)
Terminal
Directions
Functions
SCL
Input
Serial clock input.
SDA
Bi-directional
Data input and output.
CLKOUT
Output
CLKOE
Input
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.
/INT
Output
Interrupts output by Alarm and Timer events. ( Open drain output )
VDD
Connected to a positive power supply.
GND
Connected to a ground.
RA
8565 SA
1.
N.C.
14.
CLKOUT
2.
SCL
13.
N.C.
3.
SDA
12.
N.C.
4.
N.C.
11.
VDD
5.
GND
10.
CLKOE
6.
N.C.
9.
N.C.
7.
/ INT
10.
1
±
0.
2
5.0
7.4
± 0.2
3.
2
±
0.
1
1.2
7
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
Conditions
Min.
Typ.
Max.
unit
Operating
voltage
VDD
1.8
3.0
5.5
V
Timekeeper
voltage
VCLK
1.7
3.0
5.5
V
Operating
temperature
TOPR
40
+25
+125
°C
"
" Frequency characteristics
Item
Symbol
Conditions
Rating
unit
Frequency
stability
f / f
Ta = +25
°C
VDD = 3.0 V
5
± 23 1
× 10 6
Ta = +25
°C
VDD = 1.8 V
1.5 Max.
s
Oscilation
start up time
tSTA
Ta =
40 °C to +125 °C
VDD = 3.0 V
3 Max.
s
1 ) Equivalent to 1 minutes of monthly deviation.
"
" Current consumption under backup mode.
Item
Symbol
Conditions
Min.
Typ.
Max.
unit
+125
°C
0.95
1.80
fSCL = 0 Hz
CLKOE = LOW
VDD = 5 V
-40
°C to +85 °C
0.60
1.2
A
+125
°C
0.80
1.6
Standby
current.
IBK
fSCL = 0 Hz
CLKOE = LOW
VDD = 3 V
-40
°C to +85 °C
0.55
1.0
A
For Automotive
I
2C-Bus INTERFACE REAL TIME CLOCK MODULE
RA - 8565 SA
Built in frequency adjusted 32.768 kHz crystal unit.
Interface Type
: I
2C-Bus Interface (400 kHz)
Wide operating voltage range
: 1.8 V to 5.5 V
Wide Timekeeper voltage range
: 1.7 V to 5.5 V
Ta =
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
The various functions include full calendar, alarm, timer,etc
* The I
2C-Bus is a trademark of NXP Semiconductors
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