Real time clock module
Product Number (Please contact us)
RX-4045SA : Q41404552xxxx00
RX-4045NB : Q41404592xxxx00
REAL TIME CLOCK MODULE (SPI-Bus)
High-Stability Frequency
RX-4045SA/NB
Built-in 32.768 kHz crystal unit: Frequency adjusted for high accuracy.
(5106/Ta=+25C)
Interface Type
: 4-wire serial interface
: 1.7Vto5.5V
Operating voltage range
Wide Timekeeper voltage range
Various detection Functions
Low backup current
: 1.15Vto5.5V
: Oscillation stop detection function etc.
: 0.48A/3V(Typ.)
Actual size
RX-4045SA
32.768 kHz clock frequency output : N-ch open drain output
Function of time and calendar, the various detection function,
and interrupt function etc.
RX-4045NB
Block diagram
Overview
Features built-in 32.768kHz crystal unit
▪Frequency adjusted forhigh accuracy
ALARM_W REGISTER
(MIN,HOUR, WEEK)
(5106 /Ta=+25C)
FOUT
32kHz
OUTPUT
CONTROL
COMPARATOR_W
COMPARATOR_D
VDD
(Equivalent to 13 seconds of monthly deviation)
VOLTAGE
DETECT
ALARM_D REGISTER
(MIN,HOUR)
The various detection Function
▪Power supply voltage monitoring function
(with selectable detection threshold)
▪Stop detection function
DIVIDER
TIME COUNTER
CORREC
-TION
DIV
OSC
(SEC,MIN,HOUR,WEEK,DAY,MONTH,YEAR)
GND
CLK
▪Power-on reset detection function
ADDRESS
ADDRESS
OSC
DETECT
Equipped with alarm and timer
I/O
CONTROL
REGISTER
DECODER
DI
▪Timer function produces a periodic interruption signal.
As for the Alarm function an optional combination is
produced. (Date of the week , time , minute)
DO
/INT
CE
INTERRUPT CONTROL
SHIFT REGISTER
Pin function
Terminal connection/External dimensions
(Unit:mm)
Signal
Name Output
Input /
RX4045SA
RX4045NB
Function
N.C.
N.C.
1. CE
22.
21.
The chip enabled input pin.
( built -in pull-down resistance )
At the "H"level, access becomes possible.
1. N.C.
2. CLK
3. FOUT
4. N.C.
5. TEST
6. VDD
7. CE
14. N.C.
13. DO
12. DI
CE
Input
2. VDD
3. (GND)
4. TEST
5. FOUT
6. CLK
7. DO
20. N.C.
CLK
DI
Input
Input
The shift clock input pin for serial data transfer.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
19.
18.
17.
16.
15.
14.
13.
12.
The data input pin for serial data transfer.
The data output pin for serial data transfer.
11. GND
DO
Output
5.0
4.8
32.768kHzclock output pin with the output control
function (N-ch open drain)
High impedance at the time of output off.
10.
/INT
FOUT Output
8. DI
1.30.1
9. N.C.
8. N.C.
9. GND
/ INT
Output
Interrupt output (N-ch open drain)
10.
/INT
7.40.2
Used by the manufacturer for testing.
(Do not connect externally.)
5.00.2
TEST
11. N.C.
SOP14 pin
VDD
Connected to a positive power supply.
SON22 pin
GND
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.
Recommended Operating Conditions
Current consumption characteristics
Ta=-40Cto+85C
Symbol
Item
Symbol
Conditions
Min.
Typ.
Max.
Unit
Item
Conditions
Min.
-
Typ.
Max. Unit
Power voltage
Clock voltage
Operating
VDD
VCLK
3.0
3.0
5.5
5.5
V
V
1.7
1.15
VDD
=5V
0.60
0.48
1.80
µA
CE=GND
IBK
FOUT;output OFF
TOPR
-40
+25
+85
C
VDD
=3V
temperature
(Hi-z)
Current
Consumption
-
-
1.20
Frequency characteristics
CE=GND
VDD
=3V
I32k
0.65
2.00
µA
Item
Symbol
Conditions
Rating
AA: 551)
AC: 052)
Unit
FOUT;32.768kHz
output ON
Ta=+25°C
Frequency
tolerance
Oscillation
6
6
f/f
10
VDD=3.0V
Ta=+25°C
VDD=2.0V
Ta=+25°C
Power supply detection voltage
Ta=-30Cto+70C
Typ. Max. Unit
s
1Max.
tSTA
start-up time
Item
Symbol
Conditions
Min.
1.90
1.15
Frequency / voltage
characteristics
f/V
1Max.
10
VDD=2.0Vto5.5V
High-voltage mode
Low-voltage mode
VDETH
VDD pin
2.10
1.30
2.30
1.45
V
V
1)2) Equivalent to 13 seconds of monthly deviation (excluding offset.)
VDETL
VDD pin
5秒后页面跳转
AO3401场效应管参数、引脚图、应用原理图
BT131可控硅参数及引脚图、工作原理详解
74LS32芯片参数、引脚图及功能真值表
全球首块英伟达H200交付 黄仁勋“送货上门”
微信公众号
抖音公众号
浙公网安备 33010502006866号 浙ICP备10014259号-119
营业执照ICP证
技术参数
数据手册
如果您发现信息不准确，
