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RX-4045SA Datasheet(PDF) 1 Page - Epson ToYoCom

Part No. RX-4045SA
Description  High-Stability Frequency SERIAL-INTERFACE REAL TIME CLOCK MODULE
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Maker  EPSONTOYOCOM [Epson ToYoCom]
Homepage  http://www.epsontoyocom.co.jp
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RX-4045SA Datasheet(HTML) 1 Page - Epson ToYoCom

   
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http://www.epsontoyocom.co.jp
Real time clock module
Real time clock module
Real time clock module
Real time clock module
Epson Toyocom
Epson Toyocom
Epson Toyocom
Epson Toyocom
Block diagram
Overview
32kHz
OUTPUT
CONTROL
OSC
COMPARATOR_D
ALARM_D REGISTER
(MIN,HOUR)
ADDRESS
DECODER
ADDRESS
REGISTER
VOLTAGE
DETECT
DIV
TIME COUNTER
(SEC,MIN,HOUR,WEEK,DAY,MONTH,YEAR)
SHIFT REGISTER
I/O
CONTROL
FOUT
INTERRUPT CONTROL
CLK
DIVIDER
CORREC
-TION
VDD
GND
COMPARATOR_W
ALARM_W REGISTER
(MIN,HOUR, WEEK)
CE
OSC
DETECT
D I
/INT
DO
•••• Features built-in 32.768 kHz crystal unit
▪Frequency adjusted for high accuracy
(
± 5 ×10−6 /Ta = +25 °C )
( Equivalent to 13 seconds of monthly deviation )
•••• The various detection Function
▪Power supply voltage monitoring function
(with selectable detection threshold )
▪Stop detection function
▪Power-on reset detection function
•••• Equipped with alarm and timer
Timer function produces a periodic interruption signal.
As for the Alarm function an optional combination is
produced. (Date of the week , time , minute)
Pin function
Terminal connection / External dimensions
(Unit:mm)
Signal
Name
Input /
Output
Function
CE
Input
The chip enabled input pin.
( built -in pull-down resistance )
At the " H " level, access becomes possible.
CLK
Input
The shift clock input pin for serial data transfer.
DI
Input
The data input pin for serial data transfer.
DO
Output The data output pin for serial data transfer.
FOUT
Output
32.768 kHz clock output pin with the output control
function ( N-ch open drain )
High impedance at the time of output off.
/ INT
Output
Interrupt output ( N-ch open drain )
TEST
-
∗ Used by the manufacturer for testing.
(Do not connect externally.)
VDD
-
Connected to a positive power supply.
GND
-
Connected to a ground.
RX
− 4045 SA
1. N.C.
14.
N.C.
2. CLK
13.
DO
3. FOUT
12.
DI
4. N.C.
11.
GND
5. TEST
10.
/ INT
6. VDD
9. N.C.
7. CE
5.0
7.4 ± 0.2
8. N.C.
SOP − 14 pin
RX
− 4045 NB
1. CE
22.
N.C.
2. VDD
21.
N.C.
3. (GND)
20.
N.C.
4. TEST
19.
N.C.
5. FOUT
18.
N.C.
6. CLK
17.
N.C.
7. DO
16.
N.C.
8. DI
15.
N.C.
9. GND
14.
N.C.
10. / INT
13.
11. N.C.
4.8
5.0 ± 0.2
1.3 ± 0.1
12.
SON − 22 pin
Metal may be exposed on the top or bottom of this product. This w ill 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
-
1.7
3.0
5.5
V
Clock voltage
VCLK
-
1.15
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
AA: 5
± 5 ∗1)
AC: 0
± 5 ∗2)
× 10
6
Oscillation
start-up time
tSTA
Ta = +25 °C
VDD = 2.0 V
1 Max.
s
Frequency / voltage
characteristics
f / V
Ta = +25 °C
VDD = 2.0 V to 5.5 V
± 1 Max.
× 10−6
∗1) ∗2)
Equivalent to 13 seconds of monthly deviation (excluding offset.)
!
!
!
! Current consumption characteristics
Ta =
−40 °C to +85 °C
Item
Symbol
Condition
Min.
Typ.
Max.
Unit
VDD
= 5 V
0.60
1.80
IBK
CE = GND
FOUT ;output OFF
(Hi-z)
VDD
= 3 V
0.48
1.20
µA
Current
Consumption
I32k
CE = GND
FOUT ;32.768 kHz
output ON
VDD
= 3 V
0.65
2.00
µA
!
!
!
! Power supply detection voltage
Ta = −30 °C to +70 °C
Item
Symbol
Condition
Min.
Typ.
Max.
Unit
High-voltage mode
VDETH
VDD pin
1.90
2.10
2.30
V
Low-voltage mode
VDETL
VDD pin
1.15
1.30
1.45
V
RX-4045SA
RX-4045NB
High-Stability Frequency
SERIAL-INTER FACE REA L TIME C LOCK M ODULE
RX - 4045 SA / NB
•Built-in 32.768 kHz crystal unit: Frequency adjusted for high accuracy.
(
± 5 ×106 / Ta = +25 °C)
•Interface Type
:
4-wire serial interface
•Operating voltage range
:
1.7 V to 5.5 V
•Wide Timekeeper voltage range
:
1.15 V to 5.5 V
•Various detection Functions
:
Oscillation stop detection function etc.
•Low backup current
:
0.48
µA / 3 V (Typ.)
•32.768 kHz clock frequency output : N-ch open drain output
•Function of time and calendar, the various detection function,
and interrupt function etc.
Product Number (Please contact us)
RX-4045SA : Q41404551xxxx00
RX-4045NB : Q41404591xxxx00


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