DIGIPICCO (TM) BASIC I2C-G IST, DIGIPICCO (TM) BASIC I2C-G Datasheet - Page 2

• Manufacturer Part Number: DIGIPICCO (TM) BASIC I2C-G
• Description: SENSOR, HUMIDITY, MODULE
• Manufacturer: IST

Specifications of DIGIPICCO (TM) BASIC I2C-G

• Operating Temperature Range: -25°C To +85°C
• Humidity Sensor Type: Capacitive
• Supply Current: 3mA
• Supply: RoHS Compliant
• Humidity Range: 0 To 100% RH
• Output: Digital
• Response Time: 5s
• Capacitance: 0µF
• Accuracy: &lt
• Rohs Compliant: Yes

DigiPicco™ Basic I2C
Capacitive Humidity Module
Digital (I
W1
W2
W3
W4
W5
W6
W7
W8
W9
W10
Description I
First of all the external microcontroller (master) sends the start condition to the slave (DigiPicco). Then the master
transmits the standard 7 Bit address (0x78) or a factory customizable address. The eight bit (LSB) determines the
direction of data flow and has to be set during this operation. Following, the slave (DigiPicco) acknowledges the
receipt of data with the acknowledge condition (SDA kept low during a positive clock cycle). After that, the slave
(DigiPicco) outputs the data values. After each data byte the master has to acknowledge the receipt of the data
values by the acknowledge condition, except before the stop condition has been sent by the master itself.
The humidity and the temperature values exist of two bytes each. The first two bytes are the humidity values and
the second two bytes are the temperature values, 15 bit each. This sequence is repeated indefinitely until the stop
condition has been sent (also refer to diagram below).
Start Condition:
SDA changes from high to low during SCL is in high condition.
Stop Condition:
SDA changes from low to high during SCL is in high condition.
Terminal Pinout
2
C
2
C)
Reserved
Reserved
Clock SCL (I
Data SDA (I
Reserved
Reserved
Signal GND
GND
Reserved
Vcc +
Typical read operation timing sequence
Start- und Stop Condition
2
2
C)
C)