PIC16F690DM-PCTLHS Microchip Technology, PIC16F690DM-PCTLHS Datasheet - Page 17

• Manufacturer Part Number: PIC16F690DM-PCTLHS
• Description: BOARD DEMO PICTAIL HUMIDITY SNSR
• Manufacturer: Microchip Technology
• Series: PICtail™r

Specifications of PIC16F690DM-PCTLHS

• Sensor Type: Humidity
• Sensing Range: 1 ~ 99% RH
• Interface: Analog
• Voltage - Supply: 5V
• Embedded: Yes, MCU, 8-Bit
• Utilized Ic / Part: MCP6291, PIC16F690
• Processor To Be Evaluated: MCP6291 and PIC16F690
• Interface Type: ICSP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: AC162061 - HEADER INTRFC MPLAB ICD2 20PIN
• Sensitivity: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

3.1
3.2
3.3
© 2005 Microchip Technology Inc.
INTRODUCTION
CONFIGURING THE HUMIDITY SENSOR PICTAIL™ DEMO BOARD
USING THE HUMIDITY SENSOR PC PROGRAM
This demonstration board makes it easy to explore the operation of a humidity sensor
application. Items discussed in this chapter include:
• Configuring the Humidity Sensor PICtail™ Demo Board
• Using the Humidity Sensor PC Program
• Programming the PIC16F690
• Humidity Sensor Calibration
1. Setup the board as explained in Chapter 2. “Setup and Installation”.
2. Place a humidity sensor or capacitor in the C
3. Connect the shunt to jumpers JP1 – JP3 according to the measurement
4. Allow sufficient time for the humidity sensor to respond to changes in the
TABLE 3-1:
The capacitance.exe PC Program Graphical User Interface (GUI) is displayed in
Figure 3-1. It is a simple program that helps the user to control the functionality of the
Humidity Sensor PICtail™ Demo Board and to view the results sent back from that
board.
Selected
Jumper
Note:
JP1
JP2
JP3
a) Humirel’s HS1101LF capacitive humidity sensor.
b) A capacitor of known value.
resolution and capacitance values desired; see Table 3-1.
environment (about 30 seconds for the HS1101LF).
This program is intended as an evaluation tool; it does not check for all
possible errors. It is the user’s responsibility to make sure the GUI and
demo board are used under reasonable conditions.
Chapter 3. Operation
Measurement
(pF / count)
Resolution
JUMPER SELECTION – MODIFIED CIRCUIT
0.1
10
1
HUMIDITY SENSOR PICTAIL™
DEMO BOARD USER’S GUIDE
0.6 pF to 6.5 nF
60 pF to 650 nF
6 pF to 65 nF
C
SEN
Range
SEN
6.65 M
66.5 k
665 k
R
( )
socket.
INT
Use for HS1101LF sensor
Comments
DS51594A-page 13