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Discontinued Product
RTC-4701NB (Built-in Temperature Sensor Serial-Interface Real Time Clock Module)
- Built in frequency adjusted 32.768kHz crystal unit.
- Interface Type
3-wire serial interface
- Operating voltage range
1.6V to 5.5V
- Wide Timekeeper voltage range
1.6V to 5.5V
- Built-in temperature sensor
Detects temperature.Converts output to analog voltage
- 32.768kHz frequency output function
C-MOS output With Control Pin
- Function of time and calendar, the various interrupt function etc.
Block diagram
Overview
- Built-in temperature sensor
- Diode temperature sensor (analog voltage output)
- * temperature sensor operating voltage:2.7V to 5.5V
- * temperature sensor tolerance:±5°C(Ta=+25°C)
- * voltage output (analog):-7.6mV/°C Typ.
- 32.768kHz frequency output function
- FOUT pin output (C-MOS output), CL=30pF
- FOE pin enables output on/off control.
- The various interrupt function
- 12bit additional counter.(to 4095count)
- Timer function can be set up between 1/4096second and 255minutes.
- Alarm function can be set to day of week, hour, or minute.
Pin function
Signal Name | Input/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 | ||||||||||
VTEMP | Output | The voltage output pin for the temperature sensor (analog). | |||||||||
/SOFF | Input | The input pin for the temperature sensor control. | |||||||||
/ AIRQ | Output | Output 1 pin (N-ch open drain) | |||||||||
/ TIRQ | Output | Output 2 pin (N-ch open drain) | |||||||||
VDD | - | Connected to a positive power supply. | |||||||||
GND | - | Connected to a ground. |
Terminal connection / External dimensions
(Unit: mm)
Metal may be exposed on the top or bottom of this product. This will not affect any quality, reliability or electrical spec.
Temperature sensor characteristics *Refer to application manual for details.
* If not specifically indicated, GND=0V,VDD=2.7V to 5.5V,Ta=-40°C to +85°C
Item | Symbol | Condition | Min. | Typ. | Max. | Unit |
---|---|---|---|---|---|---|
Temperature output voltage |
VTEMP | VTEMP pin,Ta=+25°C GND based output voltage |
1.480 | V | ||
Output tolerance |
TACR | Ta=+25°C | ±5.0 | °C | ||
Temperature sensitivity |
VSE | -40°C ≤ Ta ≤ +85°C | -7.1 | -7.6 | -8.1 | mV/°C |
Linearity | ΔNL | -40°C ≤ Ta ≤ +85°C | ±2.0 | % | ||
Temperature detection range |
TSOP | ΔNL ≤ ±2.0% | -40 | +85 | °C | |
Output resistance |
RO | VTEMP pin,Ta=+25°C GND standard and VDD standard |
1.0 | 3.0 | kΩ |