RTC-4701JE Datasheet, PDF (1/2 Pages) Epson ToYoCom – Built-in Temperature Sensor SERIAL-INTERFACE REAL TIME CLOCK MODULE

Real time clock module
Epson Toyocom
Built-in Temperature Sensor
SERIAL-INTERFACE REAL TIME CLOCK MODULE
RTC - 4701 JE / NB
•Built in frequency adjusted 32.768 kHz crystal unit.
•Interface Type
: 3-wire serial interface
•Operating voltage range
: 1.6 V to 5.5 V
•Wide Timekeeper voltage range : 1.6 V to 5.5 V
•Built-in temperature sensor
: Detects temperature.
Converts output to analog voltage
•32.768 kHz frequency output function: C-MOS output With Control Pin
•Function of time and calendar, the various interrupt function etc.
Actual size
RTC-4701JE
Product Number (Please contact us)
RTC-4701JE : Q41470171000200
RTC-4701NB: Q41470191000200
RTC-4701NB
Block diagramç
32.768 kHz
VT EMP
/ SOFF
OSC
Te mpe rat ure
Sensor
DI VIDE R
FOUT
FOE
/ AIRQ
/ TIRQ
DATA
CLK
CE
FOUT
CONTROLLER
I NTERRUP TS
CONTROLLER
BUS
I NTERFA CE
CI RCUIT
ç ç ç Overviewç
ç
Control Line
CLOCK
and
CALENDAR
TIMER
REGISTER
ALARM
REGISTER
CONTROL
REGISTER
and
SYSTEM
CONTROLLER
• Built-in temperature sensor
• Diode temperature sensor (analog voltage output)
∗ tem perature s ensor operating voltage : 2.7 V to 5.5 V
∗ temperature sensor tolerance : ± 5 °C ( Ta = +25 °C )
∗ voltage output (analog): −7.6 m V / °C Typ.
• 32.768 kHz frequency output function
• FOUT pin output (C-MOS output), CL=30 pF
• FOE pin enables output on/off control.
• The various interrupt function
• 12 bit additional counter. ( to 4095 count )
• Timer function can be set up between
1/4096 second and 255 minutes.
• Alarm function can be s et to day of week, hour, or m inute.
Pin Functionç
ç ç ç Terminal connection / External dimensionsç
(Unit:mm) ç
Signal
Input /
Name Output
Function
CE
Input
The chip enabled input pin.
(Built -in pull-down resistance)
CLK
Input The shift clock input pin for serial data transfer.
DATA
Bi-directional
The data input / output pin for serial data
transfer.
FOUT Output
FOE
Input
FOE input
HIGH
L OW
FOUT output
32.768 kHz output ∗ C-MOS output
output OFF
∗ Hi - z
VTEMP
/SOFF
/ AIRQ
/ TIRQ
VDD
GND
Output
Input
Output
Output
-
-
The voltage output pin for the
temperature sensor ( analog ).
The input pin for the temperature sensor control.
Output 1 pin ( N-ch open drain )
Output 2 pin ( N-ch open drain )
Connected to a positive power supply.
Connected to a ground.
1. VDD
2. FOUT
3. CE
4. / AIRQ
5. / TIRQ
6. CLK
7. DATA
8. FOE
9. VTEMP
10. / SOFF
RTC − 4701 JE
20. N.C.
19. N.C.
18. N.C.
17. N.C.
16. N.C.
15. N.C.
5.4
14. N.C.
1.5 Max. 13. N.C.
12. N.C.
6.0 ± 0.2
11. GND
VSOJ − 20 pin
1. GND
2. / SOFF
3. VTEMP
4. FOE
5. DATA
6. CLK
7. / TIRQ
8. / AIRQ
9. CE
10. FOUT
11. VDD
RTC − 4701 NB
4 .8
5.0 ± 0.2
22.
21.
20.
19.
18.
17.
16.
15.
1.3 ± 0.1
14.
13.
12.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
−
−
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.
Temperature sensor characteristics
Item
Temperature
output voltage
Output tolerance
Temperature
sensitivity
Linearity
Temperature
detection range
Output resistance
∗ If not specifically indicated, GND = 0 V , VDD = 2.7 V to 5.5 V , Ta = −40 °C to +85 °C
Symbol
Condition
Min. Typ. Max. Unit
VTEMP
VTEMP pin, Ta = +25 ^°C
GND based output voltage
1.480
V
TACR Ta = +25 °C
± 5.0
°C
VSE -40 °C ≤ Ta ≤ +85 °C
-7.1
-7.6
-8.1 mV / °C
∆NL -40 °C ≤ Ta ≤ +85 °C
± 2.0
%
TSOP ∆NL ≤ ± 2.0 %
−40
+ 85
°C
RO
VTEMP pin, Ta = +25 °C
GND standard and VDD standard
1.0
3.0
kΩ
∗ Temperature sensitivity
∗ Linearity
∗ Output resistance ( Ro )
VSE = ( V ( +85 °C ) − V ( −40 °C ) ) / 125 [ mV / °C ]
∆ NL =
a
b
× 100 [ % ]
a : Maximum deviation between the measured value of
VTEMP and approximate straight line.
b : Difference between the measured values at
−40 °C and +85 °C.
Ro =
∆
∆
V1
Ι₁
[Ω]
* Refer to application manual for details.
Output voltage
VTEMP [ V ]
a
V (−40 °C )
Approximate
straight line
b
a
Measured
a
V(+85 °C )
Ta
−40
0
Temperature
+85
[°C]
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