SK40B User Manual

8/12/2019 SK40B User Manual

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SK40B

PIC MICROCONTROLLER START-UP KIT

Users Manual

V1.2

August 2009

Information contained in this publication regarding device applications and the like is intended through suggestion only and may

be superseded by updates. It is your responsibility to ensure that your application meets with your specifications. Norepresentation or warranty is given and no liability is assumed by Cytron Technologies Incorporated with respect to the accuracy

or use of such information, or infringement of patents or other intellectual property rights arising from such use or otherwise. Use

of Cytron Technologiess products as critical components in life support systems is not authorized except with express written

approval by Cytron Technologies. No licenses are conveyed, implicitly or otherwise, under any intellectual property rights.


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Product Users Manual SK40B

Created by Cytron Technologies Sdn. Bhd. All Rights Reserved 1

Index

1. Introduction and Overview 2

2. Packaging List 3

3. Board Layout 4

4. Product Specification 6

5. Installation (hardware) 7

5.1 Loading Program Using UIC00A Programmer 7

5.2 Loading Program Using Bootloader 8

5.2.1 Bootloader for 16F 95.2.2 Bootloader for 18F 17

6. Getting Started 21

7. Warranty 23

Appendix A (schematic) 24


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1. INTRODUCTION AND OVERVIEW

SK40B is enhanced version of SK40A. It is designed to offer an easy to start board for PIC

MCU user. However, all interface and program should be developed by user. This board

comes with basic element for user to begin project development. It offer plug and use

features. This kit is designed to offer:

Industrial grade PCB

Every board is being fully tested before shipped to customer

Compact, powerful, flexible and robust start-up platform

Suitable for hobbyists and experts

Save development and soldering time

No extra components required for the PIC to function

All 33 I/O pinsare nicely labeled to avoid miss-connection by users

Connector for UIC00A(low cost USB ICSP PIC Programmer) - simple and fast

method to load program

RS232 (Serial) hardware on board allowing alternative method to load program easilyvia bootloader

Fully compatible with SK40A

No more frustrated work plugging PIC out and back for re-programming

Perfectly fit for 40 pins 16F and PIC18F PIC

No more confusion between programmer and bootloader

With UIC00A, program can be loaded in less than 5 seconds

SK40A come with:

5V voltage regulator (1A max)

20MHz crystal oscillator

Reset button

1 x programmable push button

RS232 hardware for serial communication to PC

Connector for UIC00A

On/Off switch for main power

DC adaptor socket as power input

And all the necessities to eliminate users difficulty in using PIC

Users are able to utilize the function of PIC by directly plugging in the I/O components in

whatever way that is convenient to user. With UIC00A connector on board, user can startdeveloping projects and have fun with this kit right away. Of course, bootloader can still be

applied in loading program. This kit comes WITHOUTPIC microcontroller to provide the

freedom for user to choose PIC type.

This document explains the method to use SK40B.


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2. PACKAGING LIST

Please check the parts and components according to the packing list. If there are any parts

missing, please contact us at [email protected].

1. 1 x SK40B board with all components shown soldered2. PIC MCU Not included, please purchase separately from Cytron website3. Serial Cable Not included, please purchase separately from Cytron website4. UIC00A Not included, please purchase separately from Cytron website5. User Manual Not included, please download from Cytron website


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3. BOARD LAYOUT

A is a slide switch to On/Off the power supply from DC adaptor or Battery connector.

Pushing the switch down will ON SK40B.

B is a DC power adaptor socket for user to plug in DC adaptor. The input voltage should be

ranged from 7 to 15V.

Label Function Label Function

A Slide Switch for main power supply G 5V regulator

B DC power adaptor socket H Header pin and turn pin

C Battery connector I 40 pin IC socket for PIC MCU

D Power indicator LED J Reset buttonE Serial cable adaptor (female DB9) K Programmable push button

F Connector for UIC00A Programmer

BA CE

D

F

G

I

H

J K

Pin 1

of PIC


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C is a 2510 2 way connector for battery input. The battery voltage should be between 7 to

15V. Please ensure the polarity of voltage is correctly plugged before power up SK40B. The

+ and -- is have been labeled at the side of connector.

D is an indicator LED for on board 5V regulator. It will light ON as long as the input power

is correctly connected and the slide switch is ON.

E is a serial cable connector, female DB9. It should be connected to male DB9 serial cable.

F is a 2x5 box header for UIC00A, USB ICSP PIC Programmer.

G is a 5V voltage regulator

H Consist of several line of header pin and turn pin. Header pin provide connector for user

to solder SK40B to prototype board and use the I/O of PIC MCU. It is fully compatible

between SK40A. Turn pin offer simple way to check voltage with multi-meter probe. 40 pins

of PIC MCU except OSC (connected to crystal) are extended out to these pin. There is anextra pin on top of MCLR which is labeled as Vin, is connected to the input power.

I 40 pin IC socket for user to plug in any 40 pin PIC MCU (8 bit). It can either be 16F or

18F PIC. Of course the IC package should be PDIP. Please ensure the first pin is at the top

side. Inside IC socket, there some electronics components, it include a 20MHz Crystal.

J is a push button with the function of Reset for PIC MCU.

K is a push button connected to RB0 of PIC MCU. This is an extra input button for user. It

can be programmed as an input switch.


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4. PRODUCT SPECIFICATION

SK40B is designed to offer starting up platform for development, the specification of PIC

MCU used should be referred.

However, there is a limitation that user should beware of. The input supply should be from 7to 15V. Battery or DC adaptor can be used.

Note: Only 1 power supply should be provided to SK40B.


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5. INSTALLATION (HARDWARE)

SK40B come with UIC00A ICSP USB programmer connector and bootloader capability to

offer simple way for downloading program. However, from user feedback and experience,

using UIC00A ICSP programmer is very easy and save plenty of development time.

5.1 Loading Program Using UIC00A Programmer

Connect SK40B as shown in following figure.

After plug in 40 pin PIC MCU (make sure the orientation is correct), SK40B should bepowered either from battery or DC adaptor. Now, the hex code is ready to be loaded to

SK40B. For the usage of UIC00A, please refer to UIC00A Users Manual.

RB7 and RB6 have been connected to UIC00A connector; both these pins are used for ICSP.

User is advice not to use these pin as input. Even when using as output, RB7 or RB6 pin are

recommended to be used in controlling non critical device such as LED, LCD, 7 segments or

buzzer. It is recommended to isolated ICSP signals from application circuit by using series

resistor (range 220 ohm and above). Furthermore, NO capacitance component (capacitor)

should be connected to these 2 pins. Please refer to UIC00A Users Manual for further

details.

FromUIC00A


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5.2 Loading Program Using Bootloader

Among the many features built into Microchips Enhanced FLASH Microcontroller devices

is the capability of the program memory to self-program. This very useful feature has been

deliberately included to give the user the ability to perform bootloading operations. Devices

like the PIC16F877A or PIC18F452 family are designed with a designated boot block, asmall section of protectable program memory allocated specifically for bootload firmware.

Cytron Technologies have modified and applied bootloader firmware to PIC microcontroller

which is ready to be used with simplest hardware interface. This user guide note

demonstrates a very powerful bootloader usage for the PIC16F and PIC18F families of

microcontrollers. The guide for 16F bootloader is different from 18F bootloader. Thus, there

will be 2 sections to setup and use bootloader. In order to use bootloader function on SK40B,

PIC microcontroller must have bootloader firmware preloaded. Please download the

firmware from www.cytron.com.myand burn it to PIC microcontroller using programmer.

Once your program is ready and a hex file is generated, you must now use bootloader to load

your program into SK40B to run your program. Following description show the method indetail:

Plug in the microcontroller at the socket. Make sure that it is in the correct position asthe figure below.

After plug in 40 pin PIC MCU with bootloader firmware (make sure the orientation iscorrect), SK40B should be powered either from battery or DC adaptor. Now, the hex

code is ready to be loaded to SK40B.

Since SK40B have bootloader hardware, 2 pins have been used for bootloaderfunction. Pins that involved are:

- RC7, used as RxD and connected to MAX232

- RC6, used as TxD and connected to MAX232

Connect serial port cable to computer and other end to serial cable adaptor on SK40Bboard.


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*CAUTION* The microcontroller should never be plug in the wrong position!

5.2.1Bootloader for 16F

Cytron Enterprises have developed a new bootloader firmware for 16F877A. Since 16Ffamilies have a wide range of microcontroller with plenty of memory size and configuration,

this bootloader is created base on PIC16F877A. It has following features:

a. Base on PIC16F877A, it should work for PIC listed below, however it have notbeen tested:

i. PIC16F873Aii. PIC16F874A

iii. PIC16F876A

b. With bootloader firmware resized in PIC, user code must start from address 0x200.

For assembly language, reset vector must start at address 0x200 while interruptvector should start at 0x204.

From PCs Serial

Port


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c. The configuration bits of new program code will be ignored as it cannot be accessedin bootloader mode. The configurations of bootloader firmware are listed. If

configuration is need to be modified, please use programmer to do so.

i. Oscillator = HSii. Watchdog Timer = Off

iii. Power Up Timer = Oniv. Brown Out Detect = Offv. Low Voltage Program = Disabled

vi. Flash Program Write = Write Protection Offvii. Data EE Read Protect = Off

viii. Code Protect = Off

For source code written in C language with PICC Lite Compiler, there must be offset 200 in

the PICC Linker option (Please refer to the pictures below).

Select Project Build Options Project

Specify the offset 200


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After generating hex code (with 0x200 offset) and setting up hardware connection, refer to

the following steps for setting up and use HyperTerminal.

1. HyperTerminal is software available in all windows.

2. Open the HyperTerminal: Click Start-> All Programs-> Accessories->Communications-> HyperTerminal3. Setting up the HyperTerminal (first time user):

a) Once you entered HyperTerminal, key in any name underName: and choose anyicons. Example: Name: Bootloader. Click OK upon completion.

b) Choose connect using:COM1, then click OK.


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c) Choose the following details:Bits per second : 9600

Data bits : 8

Parity : None

Stop bit : 1

Flow control : None

After all the selection is completed, click OK.

d) Next, to change the character delay, select Properties-> Setting, go into ACSIISetup submenu. Change the character delay to 10 milliseconds. Please increase the

time delay if the bootloader fail to load program completely.


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e) Then, save the file by selecting: File-> Save as. Key in the filename you prefer andpress save.


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f) Close the HyperTerminal.


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10.If bootloader firmware on PIC is corrupted, you will need to burn the firmware usingprogrammer. In this case the bootloader will not work. Please download the hex code

for PIC16F bootloader from Cytron website, the file name is 16F bootloader.hex.

2.5.2 Bootloader for 18F

After several feedbacks from customer, Cytron Technologies decided to use tinybootloader

from Claudiu. This bootloader shows great stability and simplicity to use. Since 18F families

have a wide range of microcontroller with plenty of memory size and configuration, this

bootloader is created base on PIC18F452/252. It has following features:

a. Only 100 bytes of bootloader firmware.

b. No more pressing boot button to enter boot mode, it will wait 1 second after reset.

c. No changes on linker file for those using c compiler.

d. Developed for PIC18F458/258/452/252, it should work for PIC listed below, howeverit have not been tested:

i. PIC18F242ii. PIC18F458

iii. PIC18F258iv. PIC18F442v. PIC18F248

vi. PIC18F448

e. For this version of bootloader, user needs to ensure that the GOTO must be in the first4 words of program. In other words, no more offset of program memory is

required. Please start your program at ORG 0x000 for assembly language. For C

compiler, no modification should be done on the linker file.

f. Although PIC Tiny Bootloader is able to write configuration bits and EEPROM, itrequires extra command to do so. Thus it is advice for user not to load the

configuration bits and use the configuration on the original firmware. The original

configuration for the source code are:

i. Oscillator = HSii. Osc. Swich Enable = Disabled

iii. Power Up Timer = Enablediv. Brown Out Detect = Disabledv. Brown Out Voltage = 4.5V

vi. Watchdog Timer = Disabled-Controlled by SWDTEN bitvii. CCP2 Mux = RC1

viii. Stack Overflow Reset = Disabledix. Low Voltage Program = Disabled

x. Code Protect = All Disabledxi. Data EE Read Protect = Disabled


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xii. Code Protect Boot = Disabledxiii. Table Write Protect = All Disabledxiv. Data EE Write Protect = Disabledxv. Table Write Protect Boot = Disabled

xvi. Config. Write Protect = Disabled

xvii. Table Read Protect = All Disabledxviii. Table Read Protect Boot = Disabled

After generating hex code and setting up hardware connection, refer to the following steps for

setting up and PIC Tiny Bootloader.

1. Open the 18FBootloader folder (download from SK40A web page), there is aapplication file named tinybldWin.exe. Double click on it. A window will appear,

no installation is required.

2. Choose the baud rate (default is 115200) and COM port (Default is COM1)


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a) Load the hex from theBrowseicon on the top right corner of the GUI.

b) Reset SK40A and click on Write Flash (within 1 second)

c) If device is found and Write OK, the new HEX file have been loaded, reset PICand wait for 1 second to execute the new program.


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d) If new program is needed to be loaded again, just repeat the step from a to c.

3. If bootloader firmware on PIC is corrupted, you will need to burn the firmware usingprogrammer. In this case the bootloader will not work. User may get the firmware in

the 18F firmware of 18FBootloader folder which can be downloaded from SK40A

webpage. The file name is 18FBootloader v2.hex

Please refer to Appendix A for the detail of schematic. Do consider carefully these pre-

connect interface if development require those pins.

Note: New PIC will not work with bootloader, bootloader firmware is required.


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6. GETTING STARTED

SK40B is ready to be plug and use, no extra driver or software is necessary. It is a hardware

platform, for those that use bootloader or UIC00A, please install the necessary driver or

configure the correct setting in window. SK40B is ready be used to start the electronics

interface. The I/O of the microcontroller can be access through few methods:

1. I/O port (Top)

Connect the components that needed onto the I/O port.

Extend the I/O port to another board using jumper wire

2. I/O pins (Bottom)

Plug the I/O pins of the Start-up Kit onto a breadboard. Then, access I/Opin through the breadboard.


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Plug the I/O pins of the Start-up Kit onto a donut board. Solder the pinsonto the board to access the I/O.


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7. WARRANTY

Product warranty is valid for 6 months. Warranty only applies to manufacturing defect. Damage caused by mis-use is not covered under warranty.

Warranty does not cover freight cost for both ways.

Prepared by

Cytron Technologies Sdn. Bhd.

19, Jalan Kebudayaan 1A,Taman Universiti,

81300 Skudai,

Johor, Malaysia.

Tel: +607-521 3178

Fax: +607-521 1861

URL: www.cytron.com.my

Email: [email protected]

[email protected]


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Appendix A

Documents

SK40B User Manual