PIC16F690DM-PCTLHS Microchip Technology, PIC16F690DM-PCTLHS Datasheet

BOARD DEMO PICTAIL HUMIDITY SNSR

PIC16F690DM-PCTLHS

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
Humidity Sensor
PICtail™ Demo Board
User’s Guide
© 2005 Microchip Technology Inc.
DS51594A

Related parts for PIC16F690DM-PCTLHS

PIC16F690DM-PCTLHS Summary of contents

Page 1

... Microchip Technology Inc. Humidity Sensor PICtail™ Demo Board User’s Guide DS51594A ...

Page 2

... PowerMate, PowerTool, Real ICE, rfLAB, rfPICDEM, Select Mode, Smart Serial, SmartTel, Total Endurance, UNI/O, WiperLock and Zena are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. SQTP is a service mark of Microchip Technology Incorporated in the U.S.A. All other trademarks mentioned herein are property of their respective companies. ...

Page 3

... Configuring the Humidity Sensor PICtail™ Demo Board ............................. 13 3.3 Using the Humidity Sensor PC Program ...................................................... 13 3.4 Humidity Sensor Calibration ......................................................................... 15 Chapter 4. Modified Circuit 4.1 Introduction ................................................................................................... 17 4.2 The “Reduced Current” Circuit ..................................................................... 17 © 2005 Microchip Technology Inc. HUMIDITY SENSOR PICTAIL™ DEMO BOARD USER’S GUIDE Table of Contents DS51594A-page iii ...

Page 4

... A.5 Additional Comments ................................................................................... 20 Appendix B. Bill Of Materials (BOM) B.1 Humidity Sensor PICtail™ Demo Board BOM ............................................. 25 B.2 BOM for Humidity Sensor and Other Capacitors in Box .............................. 26 B.3 BOM for “Reduced Current” Modifications ................................................... 26 Worldwide Sales and Service .....................................................................................28 DS51594A-page iv © 2005 Microchip Technology Inc. ...

Page 5

... Humidity Sensor PICtail™ Demo Board. Includes detailed circuit explanation, schematic and board layouts. • Appendix B. “Bill Of Materials (BOM)” – Gives detailed information on the Humidity Sensor PICtail™ Demo Board’s firmware. © 2005 Microchip Technology Inc. HUMIDITY SENSOR PICTAIL™ DEMO BOARD USER’S GUIDE Preface ...

Page 6

... Optional arguments mcc18 [options] file [options] Choice of mutually exclusive errorlevel {0|1} arguments selection Replaces repeated text var_name [, var_name...] Represents code supplied by void main (void) user { ... } © 2005 Microchip Technology Inc. Examples ® IDE User’s Guide ...

Page 7

... Humirel, “Relative Humidity Sensor HS1100LF / HS1101LF,” Data Sheet, Rev. C, Sept. 2004. Gives detailed information on Humirel’s (www.humirel.com) HS1101LF capacitive relative humidity sensor. © 2005 Microchip Technology Inc. ® Microcontrollers (MCUs) and dsPIC ® Digital Signal Controllers ...

Page 8

... Local sales offices are also available to help customers. A listing of sales offices and locations is included in the back of this document. Technical support is available through the web site at: http://support.microchip.com DOCUMENT REVISION HISTORY Revision A (December 2005) • Initial Release of this Document. DS51594A-page 4 © 2005 Microchip Technology Inc. ...

Page 9

... It includes a two-wire serial bus that transfers the data, and two more wires for board power (+5V and GND inputs). This interface also supports programming of the on-board PIC16F690. © 2005 Microchip Technology Inc. HUMIDITY SENSOR PICTAIL™ DEMO BOARD USER’S GUIDE PIC16F690DM-PCTLHS 102-00084R1 Humidity Sensor PICtail™ Demo Board DS51594A-page 5 ...

Page 10

... PICtail™ Demo Board Ambient Humidity Humidity Sensor +5V +5V Op Amp GND GND MCP6291 Vsen N.C. Vcm Microcontroller PIC16F690 Vint Humidity Sensor PICtail™ Demo Board Block Diagram. ® PICkit™ 1 Flash Starter Kit 2 6 ICSP™ © 2005 Microchip Technology Inc. ...

Page 11

... PICkit™ 1 Firmware This software resides on the PICkit™ 1 Flash Starter Kit’s PIC16C745 microcontroller. Use version 2.0.2 or later. © 2005 Microchip Technology Inc. Hardware Capacitance.exe PC USB PICkit™ 1 ...

Page 12

... PICkit™ 1 Flash Starter Kit or PICkit™ 2 Starter Kit • 16f690.lkr - linker script for Humidity Sensor project These files can be downloaded from the Microchip web site (www.microchip.com) and are contained in the “00084R1.zip” file. DS51594A-page 8 ® ® micro- © 2005 Microchip Technology Inc. ...

Page 13

... Demo Board. An exploded view of how the different boards connect is shown in Figure 2-1. USB Cable To PC PIC16C745 Firmware FIGURE 2-1: © 2005 Microchip Technology Inc. HUMIDITY SENSOR PICTAIL™ DEMO BOARD USER’S GUIDE ICSP™ Header Expansion Header (J3) Version 2.0.2 or later Board Connections for PICkit™ ...

Page 14

... Check HS1101LF Sensor. a) Place the HS1101LF sensor into the Csen socket. b) Follow the steps 2.a. through 2.f. in Section 3.3 “Using the Humidity Sensor PC Program”. c) The reading should be similar to that of a calibrated relative humidity sensor placed nearby. DS51594A-page 10 © 2005 Microchip Technology Inc. ...

Page 15

... PICtail™ Demo Board is shown in Figure 2-3. This setup is an alternative way to reprogram the PIC16F690 on the Humidity Sensor PICtail™ Demo Board. USB Cable To PC FIGURE 2-3: © 2005 Microchip Technology Inc. PICkit™ 2 Microcontroller Programmer ICSP™ Header (P2) Board Connections for PICkit™ 2 Microcontroller Programmer. ® ...

Page 16

... NOTES: DS51594A-page 12 © 2005 Microchip Technology Inc. ...

Page 17

... This program is intended as an evaluation tool; it does not check for all possible errors the user’s responsibility to make sure the GUI and demo board are used under reasonable conditions. © 2005 Microchip Technology Inc. HUMIDITY SENSOR PICTAIL™ DEMO BOARD USER’S GUIDE Chapter 3. Operation JUMPER SELECTION – ...

Page 18

... Click the FILE button, then the EXIT button that pops up. Or click on the WINDOWS’ EXIT button. DS51594A-page 14 1.f. 1.e. 1.c. 2.e. 2.d. “Humidity Sensor PC Program” GUI. ). SEN ’s socket on the board. SEN ’s socket on the board. SEN 2.e. 2.d. 4.b. 2.c. 2.f. 3.c. © 2005 Microchip Technology Inc. ...

Page 19

... In both cases, there are two areas of concern. First, the RH can change rapidly across time and position, making an accurate calibration difficult to do. Second, it takes time for humidity sensors to settle to an accurate value. Some can take many minutes to settle properly. © 2005 Microchip Technology Inc. DS51594A-page 15 ...

Page 20

... NOTES: DS51594A-page 16 © 2005 Microchip Technology Inc. ...

Page 21

... RA1 = RA2 = RA3 = Solder RA1, RA2 and RA3 onto the board. FIGURE 4-1: © 2005 Microchip Technology Inc. HUMIDITY SENSOR PICTAIL™ DEMO BOARD USER’S GUIDE Resistor Modifications. ) ...

Page 22

... The RH numbers make no sense for measurements produced by the modified board; they are based on another circuit configuration (see Section 3.2). DS51594A-page 18 JUMPER SELECTION – MODIFIED CIRCUIT Measurement Resolution (pF / count) 0.001 0.01 0.1 R INT C Range SEN ( ) 0 6. 650 pF 665 6.5 nF 66.5 k © 2005 Microchip Technology Inc. ...

Page 23

... RA1 – RA3 are used for the “Op Amp Integrator with Reduced Current” described in AN1016 and Chapter 4. “Modified Circuit”. Rcm1, Rcm2 and Ccm provide a mid-supply reference voltage for the op amp, U2. © 2005 Microchip Technology Inc. HUMIDITY SENSOR PICTAIL™ DEMO BOARD USER’S GUIDE or 66 ...

Page 24

... Surface mount devices for the analog circuitry • Separate digital and analog lines and sections DS51594A-page 20 placed in series to isolate the circuit from ” test point (TP4) allows the user to measure CM ” test point (TP5) allows connec- SEN © 2005 Microchip Technology Inc. ...

Page 25

... V SEN Csen 1 2 RC1 HS1101LF Humidity +5VA C 2 0.1 μ MCP6291 FIGURE A-1: Board – Schematic. © 2005 Microchip Technology Inc. U1 PIC16F690/P RA0/AN0/C1IN+/ICSPDAT/ULPWU RA1/AN1/C12IN-/V RA2/AN2/T0CLKI/INT/C1OUT PP RC0/AN4/C2IN+ RC1/AN5/C12IN- RB4/AN10/SDI/SDA RB5/AN11/RX/DT TP4 V CM +5VA JP1 R 1 INT 0.1pF/ 6. 10k JP2 R 2 INT 1 ...

Page 26

... Board – Schematic. (Continued) DS51594A-page 22 TP2 TP1 GND + RA3 RA0 8 RA1 100 μF P2 ICSP 1 RA3 RA0 5 RA1 6 RA5 RA4 RA3 RC5 RC4 RC3 RA0 RA1 RA2 RC0 RC1 RC2 +5V GND GND ICSPDAT ICSPCLK AUX NOTE: All Resistors are 1% © 2005 Microchip Technology Inc. ...

Page 27

... FIGURE A-3: Board – Top Silk-Screen. FIGURE A-4: Board – Top Metal Layer. © 2005 Microchip Technology Inc. DS51594A-page 23 ...

Page 28

... FIGURE A-5: Board – Bottom Metal Layer. DS51594A-page 24 © 2005 Microchip Technology Inc. ...

Page 29

... PCB mounting) Machine Screw, Phillips, 4 × 40 Thread, 1/4 in long, Nylon Digi-Key 1 PCB Bare Printed Circuit Board Note 1: These resistors are intended for the “Reduced Current” circuit modifications detailed in Table B-3. © 2005 Microchip Technology Inc. HUMIDITY SENSOR PICTAIL™ DEMO BOARD USER’S GUIDE Description Manufacturer EPCOS Inc. ...

Page 30

... Chip Resistor, 20 1/8W, 1%, 0805 SMD 1 RA1 Chip Resistor, 1. 1/8W, 1%, 0805 SMD DS51594A-page 26 Description Description Manufacturer Yageo America Yageo America Manufacturer Part Number Humirel HS1101LF EPCOS Inc. B37979N5101J000 EPCOS Inc. B37979G5102J000 EPCOS Inc. B37987F5104K000 Part Number RC0805FR-0720KL RC0805FR-071ML © 2005 Microchip Technology Inc. ...

Page 31

... NOTES: © 2005 Microchip Technology Inc. DS51594A-page 27 ...

Page 32

... Fax: 886-3-572-6459 Taiwan - Kaohsiung Tel: 886-7-536-4818 Fax: 886-7-536-4803 Taiwan - Taipei Tel: 886-2-2500-6610 Fax: 886-2-2508-0102 Thailand - Bangkok Tel: 66-2-694-1351 Fax: 66-2-694-1350 © 2005 Microchip Technology Inc. EUROPE Austria - Wels Tel: 43-7242-2244-399 Fax: 43-7242-2244-393 Denmark - Copenhagen Tel: 45-4450-2828 Fax: 45-4485-2829 France - Paris Tel: 33-1-69-53-63-20 ...

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