Real time clock module
REAL TIME CLOCK MODULE (I2C-Bus)
For Automotive
Product Number (Please contact us)
RA-8565SA : Q41A86552xxxx00
Extended operating temperature range (+125C)
RA - 8565SA
Built in frequency adjusted 32.768 kHz crystal unit.
Interface Type
Wide operating voltage range
Wide Timekeeper voltage range
: I2C-Bus Interface(400kHz)
: 1.8Vto5.5V
: 1.7Vto5.5V
Ta=-40Cto+125C
Extended operating temperature range: -40Cto+125C
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.
Applications : Car audio, Car navigation system, Clock, ECU sub clock
Conforms to AEC-Q200
* The I2C-Bus is a trademark of NXP Semiconductors
Block diagram
Overview
Wide operating temperature range for automotive
-40Cto+125C
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
32.768 kHz 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 32.768 kHz, 1024 Hz, 32 Hz, or 1 Hz.
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)
RA8565SA
1. N.C.
2. SCL
3. SDA
4. N.C.
5. GND
6. N.C.
7. / INT
14. CLKOUT
Signal
Name
SCL
SDA
Directions
Functions
13. N.C.
12. N.C.
DD
Input
Serial clock input.
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 32.768kHz, 1024Hz, 32Hz, or 1Hz.)
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 32.768kHz as the frequency.
11.
V
CLKOUT
Output
Input
5.0
10. CLKOE
9. N.C.
CLKOE
7.40.2
8. N.C.
/INT
VDD
GND
Output
Interrupts output by Alarm and Timer events.(Open drain output)
Connected to a positive power supply.
SOP - 14 pin
Connected to a ground.
The metal case inside of the molding compound may be exposed on the top or
bottom of this product. This purely cosmetic and does not have any effect on quality,
reliability or electrical specs.
Specifications (characteristics)
Refer to application manual for details.
Current consumption under backup mode.
Recommended Operating Conditions
Item
Symbol
Conditions
Min.
1.8
1.7
-40
Typ.
3.0
Max.
5.5
unit
V
Item
Symbol
Conditions
Min.
-
Typ.
1.10
Max.
1.8
unit
Operating
voltage
Timekeeper
voltage
Operating
temperature
VDD
+125C
VCLK
3.0
5.5
V
fSCL=0Hz
CLKOE=LOW
A
TOPR
+25
+125
C
VDD=5V
-
-
-
0.60
1.00
0.55
1.2
1.6
1.0
-40C to +85C
+125C
Frequency characteristics
Standby
current.
IBK
Item
Symbol
Conditions
Rating
unit
Ta=+25C
VDD=3.0V
Ta=+25C
VDD=1.8V
Ta=-40Cto+125C
VDD=3.0V
Frequency
stability
6
f/f
B: 5231
1.5Max.
3Max.
10
fSCL=0Hz
CLKOE=LOW
A
s
s
Oscilation
start up time
VDD=3V
tSTA
-40C to +85C
1)
Equivalent to 1 minutes of monthly deviation.