LogiFind PIC-EK User manual
PICEK™ Development Board Users Manual
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I want to express my thanks to you for eing interested in our products and for having confidence in
. The primary aim of our company is to design and produce high quality electronic products and to
constantly improve the performance thereof in order to etter suit your needs.
Please share your thoughts and feelings regarding our operation so that we can serve you etter in the future. I thank you
for your continued support and patronage.Your Dream is our Destination!
The , , , , , and !" name, logo and products names are trademarks of
, , , , , and !" Inc. in the # and other countries.
Sincerely,
$%
&
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"
Chapter 1: Introduction....................................................................................................................................... 4
What is PICEK? .............................................................................................................................................. 4
What’s on Board? ........................................................................................................................................... 4
Supported Devices............................................................................................................................................ 6
Power Supply Require ent ............................................................................................................................. 7
Progra er/Debugger Require ent ................................................................................................................ 7
Syste Specifications ....................................................................................................................................... 7
Chapter 2: Hardware Details.............................................................................................................................. 8
Power Supply and USB .................................................................................................................................. 8
1).Power Supply ...................................................................................................................................... 8
2).USB Module ........................................................................................................................................ 8
MCU Syste ..................................................................................................................................................... 9
1).ICSP Interface ..................................................................................................................................... 9
2).System Reset ...................................................................................................................................... 9
3).Crystal Socket ................................................................................................................................... 10
4Digit SEGLED Display ................................................................................................................................ 10
1Digit SEGLED Display .................................................................................................................................11
Eight LEDs .......................................................................................................................................................11
Buttons and Joystick ...................................................................................................................................... 12
1).Three User Buttons .......................................................................................................................... 12
2).Joystick .............................................................................................................................................. 13
4X4 Matrix Keypad ........................................................................................................................................ 13
1wire DS18B20 and ADC ............................................................................................................................ 13
1).1Wire DS18B20 Temperature Sensor Module ........................................................................... 13
2).ADC input .......................................................................................................................................... 14
PS/2, Buzzer,EEPROM and RTC ................................................................................................................ 15
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1).PS/2 Communication Port ............................................................................................................... 15
2).Piezo Buzzer ..................................................................................................................................... 16
3).I²C EEPROM ..................................................................................................................................... 16
4).Real Time Clock PCF8563 ............................................................................................................. 16
Step Motor, Infrared Receiver and RS232 ................................................................................................. 17
1).Step Motor with Driver ..................................................................................................................... 17
2).Infrared Receiver .............................................................................................................................. 17
3).UART via RS232 ............................................................................................................................. 17
LCD 2x16 characters (Socket) ..................................................................................................................... 18
GLCD 128x64(Socket) .................................................................................................................................... 19
Input/Output Group ......................................................................................................................................... 21
Power Supply Header for DIY ..................................................................................................................... 21
# ............................................................................................................................................................ 22
'"! ........................................................................................................................................................ 23
(%(!)*"...................................................................................................................................... 23
!'"!) ..................................................................................................................................................... 23
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Chapter 1: Introduction
What is PICEK?
+") is an old friend. It has een with us for 4 generations. Many of us made our first steps in em edded world with
+"). Today it has thousands of users: students, ho yists, enthusiasts and professionals. It is used in many schools
and other educational institutions across the glo e. We have sold them over ,--- in the world in the past 3 years. It
provides a $+ and .++ platform with common modules to ring you into the colorful em edded world.
+") has many common modules which allow you connect them to the microcontroller via wires y yourself. We
elieve that you will enjoy this free connection mode, ecause it will ring you the fun of creation.We now present you with
the new version +") that rings so much more, and we hope that you will e thrilled with your new oard, just as we
are.
+")is a powerful PIC Development Board for 370+ Microchip PIC MCUs in DIP packaging. It features over 18
essential modules necessary in development. Board comes with /0122 y default and we provide over 500
samples in C language ased on PICC compiler for microcontrollers: /0122, /0112, /023, /04/2,
/13,5, /13,5- and /13,,-.In the future, we will write more samples for other PIC MCUs
Of course, we are not perfect and we asking ourselves what we can do to make such a oard even etter, and at the
same time, we are looking forward to receiving your valua le suggestions.
What’s on Board?
'
'
1 ' $.6#7
Board is equipped with power supply unit capa le
of supporting oth 3.3V and 5V microcontrollers.
Board can e powered over USB ca le, or external
adapter connectors. An USB Port is supported(for
18F2550,18F4550 etc.)
17 5
Board is equipped with SP2 Connecter.you can use
it to uild a KEY oard of PC input.
2 383).7
4*4 Key Board can e connected to each
Input/Output group ena le you to have digital
inputs on each port pin. Buttons are of high quality
and have an exceptional and sta le response.
18 $&'
Board is equipped with Power Output Connecter for
GND,3.3V and 5V output.
3 3+'.
Driving 7segment displays is fun! PICEK™
provides 4digit display for your applications.
19 /-&599:
10f2xx Socket is for 10f2xx series PIC
microcontrollers like 10f200,10f202 etc.
4 #"'
Board contains total of 8 LEDs for PORT pins.
20 ' 51:
DIP28 Socket is for 28PIN PIC microcontrollers.
5
You need to use an external programmer with
PICEK, we have provided the standard ICSP
compati le connector.
21 ' /3:
DIP14 Socket is for 14PIN PIC microcontrollers.
6 /+.
PICEK™ provides 4digit common cathode
display for your applications.
22 ' 1:
DIP8 Socket is for 8PIN PIC microcontrollers.
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5
7 ;
3 Push uttons is used for testing the digital inputs
on each port pin. Buttons are of high quality and
have an exceptional and sta le response.
23 ' 5-:
DIP20 Socket is for 20PIN PIC microcontrollers.
8 <.:
Joystick can e used for handling the onscreen
menus or as a generic input device.
24 .:
Crystal oscillator Socket that provides external
clock is connected to microcontroller osc pins and
easy way to change different Crystal oscillator the
user need.
9 !5=5
RS232 communication circuit.
25 ' 3-:
DIP40 Socket is for 40PIN PIC microcontrollers.
10 '
You can simulate analog inputs using this provided
analog potentiometer which can e connected to
each of the 8 supported microcontroller analog
input pins.
26 ' /1:
DIP18 Socket is for 18PIN PIC microcontrollers.
11 '/15-
Board supports Dallas DS18B20 OneWire digital
temperature sensor.
27 #5--=
ULN2003A provided on oard is for driving
stepmotor.
12 &!!
1838B infrared receiver device provided on the
oard for your remote control.
28 .!7
High quality reset utton with surrounding reset
circuitry ensures sta le reset operation.
13 '74>?!+5=5
You can implement UART communication through
RS232 connector provided on the oard.
29 '
The 2 potentiometers allows you to adjust the
contrast level of the pixels on your LCD1602
character display and LCD12864 display.
14 5"" !:
You can store xxxx ytes of configuration data or
other data into on oard 24CXX Serial EEPROM
with I2C interface.
30 '/0-5'/5103:
Board are equipped with LCD1602 and LCD12864
connector which allow you to connect LCD1602
and LCD12864 display easily
15 !
It features the PCF8563 realtime clock (RTC).
31 (
They are availa le in each Input/Output group,
which is convenient for easier access to any PORT
pin.
16 7@@6:
With piezo uzzer you can de ug your
applications, or have audio signalization feature.
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/+/AB;
Supported Devices
+") currently supports over 370+ Microchip PIC microcontrollers in DIP packaging, and the following shows the
frequentlyused:
/-CC：
：：
：
PIC10F200 PIC10F202 PIC10F204 PIC10F206 PIC10F220 PIC10F222
/5CC：
：：
：
PIC12C508 PIC12C508A PIC12C509 PIC12C509A PIC12C671 PIC12C672 PIC12CE518
PIC12CE519 PIC12CE673 PIC12CE674 PIC12F508 PIC12F509 PIC12F629 PIC12F635
PIC12F675 PIC12F683 PIC12F615 PIC12HV615
/0CC：
：：
：
PIC16C505 PIC16C554 PIC16C558 PIC16C61 PIC16C62 PIC16C62A PIC16C62B
PIC16C62A PIC16C62B PIC16C63 PIC16C63A PIC16C64 PIC16C64A PIC16C65
PIC16C65A PIC16C65B PIC16C66 PIC16C66A PIC16C67 PIC16C620 PIC16C620A
PIC16C621 PIC16C621A PIC16C622 PIC16C622A PIC16C71 PIC16C72 PIC16C72A
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PIC16C73 PIC16C73A PIC16C73B PIC16C74 PIC16C74A PIC16C74B PIC16C76
PIC16C77 PIC16C710 PIC16C711 PIC16C712 PIC16C716 PIC16C745 PIC16C765
PIC16C773 PIC16C774 PIC16C83 PIC16C84 PIC16F505 PIC16F506 PIC16F54
PIC16F627 PIC16F616 PIC16HV616 PIC16LF627A PIC16F627A PIC16F628 PIC16F887
PIC16F628A PIC16LF628A PIC16F630 PIC16F636 PIC16F639 PIC16F648A PIC16F676
PIC16F683 PIC16F684 PIC16F685 PIC16F687 PIC16F688 PIC16F689 PIC16F690
PIC16F716 PIC16F72 PIC16F73 PIC16F74 PIC16F76 PIC16F77 PIC16F737
PIC16F747 PIC16F767 PIC16F777 PIC16F785 PIC16F83 PIC16F84 PIC16F84A
PIC16F87 PIC16F88 PIC16F818 PIC16F819 PIC16F870 PIC16F871 PIC16F872
PIC16F873 PIC16F873A PIC16F874 PIC16F874A PIC16F876 PIC16F876A PIC16F877
PIC16F877A PIC16F913 PIC16F914 PIC16F916 PIC16F917 PIC16F882
PIC16F883
PIC16F884 PIC16F886
/1CC：
：：
：
PIC18F242 PIC18F248 PIC18F252 PIC18F258 PIC18F442 PIC18F448 PIC18F452
PIC18F458 PIC18F1220 PIC18F1320 PIC18F2220 PIC18F2221 PIC18F2320 PIC18F2321
PIC18F2331 PIC18F2410 PIC18F2420 PIC18F2431 PIC18F2450 PIC18F2455 PIC18F2480
PIC18F2510 PIC18F2515 PIC18F2520 PIC18F2525 PIC18F2550 PIC18F2580 PIC18F2585
PIC18F2610 PIC18F2620 PIC18F2680 PIC18F4220 PIC18F4221 PIC18F4320 PIC18F4321
PIC18F4331 PIC18F4410 PIC18F4420 PIC18F4431 PIC18F4450 PIC18F4455 PIC18F4480
PIC18F4510 PIC18F4515 PIC18F4520 PIC18F4525 PIC18F4550 PIC18F4580 PIC18F4585
PIC18F4610 PIC18F4620 PIC18F4680
Power Supply Require ent
+") development oard supports oth 3.3V and 5V power supply on a single oard.This feature ena les you to use
wide range of peripheral oards. Power supply: via 2P Screw Terminal ("C+ A!) (+712V DC) or via #7 ca le (5V DC)
Power capacity: up to 500mA with USB, and up to 600 mA with external power supply.
Progra er/Debugger Require ent
+") does not contain any programmer/de ugger. An external PIC programmer/de ugger is required to download
code to the PIC MCUs. It supports many programmer/de ugger like )5，)= or '5 etc. Some thirdparty PIC
programmer/de ugger are also supported well, like '5:',D5--0)/51)/34 etc.
Syste Specifications
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Chapter 2: Hardware Details
Power Supply and USB
5+/: Two power supply unit and USB schematic
/? $.
+") Board contains power supply that creates sta le voltage ,* and ==* and current levels necessary for powering
each part of the oard. Power supply section contains two power regulators: 21-,, which generates *+,*, and
///2+== which creates *+==* power supply. The oard can e powered in two different ways: with USB power
supply (#7), or using external DC 712V via 2P Screw Terminal ("C+ A!). External voltage levels must e in range of
DC 712V. Use <5 to specify whether you are using 5V or 3.3V power supply for the system. Use </ to specify whether
you are using USB or External power supply. Upon providing the power using either external or USB power source you
can turn on power supply y using switch( A"!A). LED ( A!"') will indicate the presence of power supply.
5?#7
The '+ and 'E lines on USB power supply connector (#7) are connected to the Microcontroller socket, which are for
creating a USB HID application if you are using a microcontroller with USB module inside like /13,,-. The USB
ena le jumper(< /) is used to ena le the USB function.
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How to power the board?
MCU System
+") oard contains seven DIP sockets: DIP40, DIP28, DIP20, DIP18, DIP14,DIP8 and 10F2XX. MCUs. And it
supports over 350 microcontrollers from PIC10F,PIC12F, PIC16F, PIC16Enh, PIC18F, PIC18FJ and PIC18FK families.
There are two DIP8 sockets for PIC microcontrollers provided on the oard ' 1 and /-5CC. Which of these sockets
you will use depends solely on the pinout of the microcontroller in use. +") development system comes with the
default /0122 microcontroller in a DIP40 package.
The MCU system also contains &, .: and .!
/? &
InCircuit Serial Programming ( ) is an enhanced ISP technique implemented in Microchip’s PICmicro
OneTimeProgramma le ( ) and FLASH RISC microcontrollers (MCU). Use of only two I/O pins to
serially input and output data makes easy to use and less intrusive on the normal operation of the MCUs. We use
standard 6p ICSP on the oard and a jumper for setting proper % and %'for different MCUs. The standard ICSP
interface ( ) allows you to connect )5, )=, '5 or other thirdparty Programmer/de ugger directly.
5?.!
Reset circuit is made with 10K pullup resistor, !"" utton connected to GND and a 0.1uF capacitor for filtering.
1.With USB cable
To power the oard with USB ca le, place jumper J1 in USB
position(#7F A!). You can then plug in the USB ca le as shown
on the right image, and turn the power switch(POWERSW) ON.
2.With laboratory power supply
To power the oard using screw terminals, place jumper J1 in
"CF A! position. You can then screwon the ca les in the screw
terminals as shown on the right image, and turn the power
switch(POWERSW) ON. External voltage levels must e in range of
DC 712V and pay more attention to the “+” and “” in case the
oard is damaged.
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=?.:
.: is connect to the MCU sockets directly, and allows you to change different crystals for your system.
5+5: MCU System
4Digit SEG ED Display
One seven segment digit consist of 7+1 LEDs which are arranged in a specific formation which can e used to represent
digits from 0 to 9 and even some letters. One additional LED is used for marking the decimal dot, in case you want to write
a decimal point in the desired segment. +") contains four of these digits put together to form 4digit segled display.
Driving such a display is done using multiplexing techniques. Data lines are shared etween segments, and therefore the
same segment LEDs in each digit are connected in parallel. Each digit has it’s unique digit select line, which is used to
ena le the digit to which the data is currently eing sent. By multiplexing data through all four segments fast enough, you
create an illusion that all four segments are in operation simultaneously. This is possi le ecause human eye has a slower
reaction time than the mention changes. This way you can represent num ers in decimal or hexadecimal form. Eight data
lines that are common for all the digits are connected to connector (0), and digit select lines are connected to
connector (=) via a 23(/=1 3to8 line decoder.The two connectors does not e connected to any IOs, and it makes
your experiments more flexi le. In order to ena le Segled Display,you must connect the =and 0 to the IO lines of
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the microcontroller .See the comments in the source code provided in CD Rom for how to connect the hardware.
5+=: 4Digit Segled Display Module
1Digit SEG ED Display
+") equips a commoncathode type 1Digit Segled Display modules. Driving such a display is done using simplest
mode: the common pin is connect to %' and all segments are connect to IOs directly. See the 5+3Eight data
lines are connected to connector (,). This connector does not e connected to any IOs, and it makes your experiments
more flexi le. In order to ena le Segled Display, you must connect the ,to the IO lines of the microcontroller .See the
comments in the source code provided in CD Rom for how to connect the hardware.
5+3: 1Digit Segled Display Module
Eight EDs
"'>+"'? is a highly efficient electronic light source. When connecting LEDs, it is necessary to place a
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current limiting resistor in series so that LEDs are provided with the current value specified y the manufacturer. The
current varies from 0.2mA to 20mA, depending on the type of the LED and the manufacturer. +") oard uses
lowcurrent LEDs with typical current consumption of 0.2mA or 0.3mA, depending of VCC voltage selection. Board
contains 8 LEDs which can e used for visual indication of the logic state on PORT pins. An active LED indicates that a
logic high (1) is present on the pin.
In order to ena le LEDs, it is necessary to connected them to the appropriate IOs Port via connector (3) using dupont
wires. The 3 connector does not e connected to any IOs, and it makes your experiments more flexi le. See the
comments in the source code provided in CD Rom for how to connect the hardware.
5+,: 8 LEDs
Buttons and Joystick
5+0G7<.:
/?#7
The logic state of all microcontroller digital inputs may e changed using push uttons. +") equips 3 user uttons
7/, 75 and 7=. In order to ena le three uttons, it is necessary to connected them to the appropriate IOs
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Port via connector (/4-H5) using dupont wires.See the comments in the source code provided in CD Rom for how to
connect the hardware.
5?<.:
+") also equips
a <.: which is a smart navigation key concept ased on contactless, magnetic movement
detection. You can think it simply as 5 Tact Switchs installed on one device, and they are the &, !, #, '$ and
. In order to ena le the Joystick, it is necessary to connected them to the appropriate IOs Port via connector
(/4=H2) using dupont wires. See the comments in the source code provided in CD Rom for how to connect the
hardware.
4X4 Matrix Keypad
3C39). is used for loading numerics into the microcontroller. It consists of 16 uttons arranged in a form of an
array containig four Rows and four columns. In order to ena le the 3C39)., it is necessary to connected them
to the appropriate IOs Port via connector (/1) using dupont wires. The /1 connector does not e connected to any
IOs, and it makes your experiments more flexi le.
5+2G3C39).
1wire DS18B20 and ADC
/?/+A'/175-
'/175- is a digital temperature sensor that uses 1wire® interface for it’s operation. It is capa le of measuring
temperatures within the range of 55 to 128°C, and provides ±0.5°C accuracy for temperatures within the range of 10 to
85°C. It requires 3V to 5.5V power supply for sta le operation. It takes maximum of 750ms for the '/175- to calculate
temperature with 9 it resolution. 1wire® serial communication ena les data to e transferred over a single
communication line, while the process itself is under the control of the master microcontroller. The advantage of such
communication is that only one microcontroller pin is used. Multiple sensors can e connected on the same line. All slave
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devices y default have a unique ID code, which ena les the master device to easily identify all devices sharing the same
interface. +") provides a separate socket for the '/175-. Communication line with the microcontroller is connected
via 43 to !3.See the comments in the source code provided in CD Rom for how to connect the hardware.
5?'
Digital signals have two discrete states, which are decoded as high and low, and interpreted as logic 1 and logic 0. Analog
signals, on the other hand, are continuous, and can have any value within defined range. A/D converters are specialized
circuits which can convert analog signals (voltages) into a digital representation, usually in form of an integer num er. The
value of this num er is linearly dependent on the input voltage value. Most microcontrollers nowadays internally have A/D
converters connected to one or more input pins. Some of the most important parameters of A/D converters are conversion
time and resolution. Conversion time determines how fast can an analog voltage e represented in form of a digital
num er. This is an important parameter if you need fast data acquisition. The other parameter is resolution. Resolution
represents the num er of discrete steps that supported voltage range can e divided into. It determines the sensitivity of
the A/D converter. Resolution is represented in maximum num er of its that resulting num er occupies. Most
microcontrollers have 10 it resolution, meaning that maximum value of conversion can e represented with 10 its,which
converted to integer is 210=1024. This means that supported voltage range, for example from 03.3V, can e divided into
1024 discrete steps of a out 3.222mV. +") provides an interface in form of potentiometer for simulating analog input
voltages that can e routed to any of the 1 supported analog input pins(- to 1) via Jumper 4.See the comments
in the source code provided in CD Rom for how to connect the hardware.
5+1G/+$'
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PS/2, Buzzer,EEPROM and RTC
/? 65
The PS/2 port is a 6pin miniDIN connector used for connecting some key oards and mice to a PC compati le computer
system. +") provides a standard PS/2 port to connect a common PC key oard to your +"). In order to ena le the
65, it is necessary to connected them to the appropriate IOs Port via connector (//-H/) using dupont wires.
See the comments in the source code provided in CD Rom for how to connect the hardware.
5+4G 657@@"" !!
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5? @7@@
@. is the charge which accumulates in certain solid materials in response to mechanical pressure, ut also
providing the charge to the @ electric material causes it to physically deform. One of the most widely used applications
of piezoelectricity is the production of sound generators, called piezo uzzers. @;@@ is an electric component that
comes in different shapes and sizes, which can e used to create sound waves when provided with analog electrical
signal. +") comes with @;@@ which can e connected to any IO of microcontroller via connector (//5).
7@@ is driven y transistor /. Microcontrollers can create sound y generating a A(Pulse Width Modulated) signal
– a square wave signal, which is nothing more than a sequence of logic zeros and ones. Frequency of the square signal
determines the pitch of the generated sound, and duty cycle of the signal can e used to increase or decrease the volume
in the range from 0% to 100% of the duty cycle. You can generate A signal using hardware capturecompare module,
which is usually availa le in most microcontrollers, or y writing a custom software which emulates the desired signal
waveform.
=?²
²²
²"" !
²
²²
² is a multimaster serial singleended us that is used to attach lowspeed peripherals to computer or em edded
systems. ²
²²
² uses only two opendrain lines, Serial Data Line (') and Serial Clock (), pulled up with
resistors. line is driven y a master, while ' is used as idirectional line either y master or slave device.
Up to 112 slave devices can e connected to the same us. Each slave must have a unique address.
"" ! is short for Electrically Erasa le Programma le Read Only Memory. It is usually a secondary storage memory
in devices containing data that is retained even if the device looses power supply. "" ! come with parallel or serial
interface to the master device. Because of the a ility to alter single ytes of data,"" ! devices are used to store
personal preference and configuration data in a wide spectrum of consumer, automotive, telecommunication, medical,
industrial, and PC applications. . supports serial EEPROM which uses I2C communication interface and has
1024 ytes of availa le memory. "" ! itself supports single yte or 16 yte (page) write and read operations. Data
rates are dependent of power supply voltage, and go up to 400 kHz for 3.3V power supply.
+") equips an IC socket for "" ! with different capacity.In order to ena le the ²
²²
²"" !, it is necessary to
connected them to the appropriate microcontroller Pin via connector (//=H3) using dupont wires. See the comments
in the source code provided in CD Rom for how to connect the hardware.
3?!: 1,0=
The 1,0= is a CMOS realtime clock/calendar optimized for low power consumption. A programma le clock output,
interrupt output and voltagelow detector are also provided. All address and data are transferred serially via a twoline
idirectional I2C us. Maximum us speed is 400 k its/s. The uiltin word address register is incremented automatically
after each written or read data yte.
In order to ena le the !: 1,0=, it is necessary to connected them to the appropriate microcontroller
Pin via connector (//,H0) using dupont wires. See the comments in the source code provided in CD Rom for how to
connect the hardware.
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Step Motor, Infrared Receiver and RS232
/?$'
The #5--= is highvoltage highcurrent Darlington transistor arrays. Each consists of seven npn Darlington pairs that
feature highvoltage outputs with commoncathode clamp diodes for switching inductive loads. The collectorcurrent rating
of a single Darlington pair is 500 mA. The Darlington pairs can e paralleled for higher current capa ility. Applications
include relay drivers, hammer drivers, lamp drivers, display drivers (LED and gas discharge), line drivers, and logic uffers.
On +"), We use a #5--= to drive . In this application, you need to connect a
5+/-G7<+31+,*
In order to ena le the #5--= Drive Module, it is necessary to connected them to the appropriate IOs Port via
connector (5-5H,) using dupont wires and connect a 7<+31+,*>5+/-? to the socket>?.
See the comments in the source code provided in CD Rom for how to connect the hardware.
5?&!
/1=1* is miniaturized infrared receivers for remote control and other applications requiring improved am ient light
rejection.The separate PIN diode and preamplifier IC are assem led on a single leadframe. The epoxy package contains
a special IR filter.This module has excellent performance even in distur ed am ient light applications and provides
protection against uncontrolled output pulses. +") equips a socket(!) for installing /1=1* infrared receiver.
In order to ena le the /1=1* infrared receiver Module, it is necessary to connected them to the appropriate IOs Port via
connector (5-/) using a dupont wire. See the comments in the source code provided in CD Rom for how to connect
the hardware.
=?#!!+5=5
The #!(universal asynchronous receiver/transmitter) is one of the most common ways of exchanging data etween
the MCU and peripheral components. It is a serial protocol with separate transmit and receive lines, and can e used for
fullduplex communication. Both sides must e initialized with the same aud rate, otherwise the data will not e received
correctly. !+5=5 serial communication is performed through a 9pin SUBD connector and the microcontroller #!
module.
In order to ena le this communication, it is necessary to esta lish a connection etween RX and TX lines on SUBD
connector and the same pins on the target microcontroller using connector 5-0H2. Since RS232 communication
voltage levels are different than microcontroller logic levels, it is necessary to use a RS232 Transceiver circuit.
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See the comments in the source code provided in CD Rom for how to connect the hardware.
5+//G&!!5=5
CD 2x16 characters (Socket)
Liquid Crystal Displays or LCDs are cheap and popular way of representing information to the end user of some electronic
device. Character LCDs can e used to represent standard and custom characters in the predefined num er of fields. The
+") provides the connector and the necessary interface for supporting 2x16 character LCDs. This type of display has
two rows consisted of 16 character fields. Each field is a 7x5 pixel matrix. Board equips an universal socket allowing you
to install 16x2 LCD very easily.
PICEK™ Development Board Users Manual
www.LogiFind.com 19
Connector pinout explained
1GND
25V
3Vo,
LCD contrast level from potentiometer /
4RS,
Register Select Signal
5E,
Display Ena le
6R/W,
Determines whether display is in Read or Write mode. It’s always connected to GND, leaving the display in Write
mode all the time.
7~14Data Port,
Display is supported in 8 it data mode.
15LED
,Connection with 5V
16LED
,Connection with GND
5+/5G'59/0:
G CD 128x64(Socket)
Graphical Liquid Crystal Displays, or GLCDs are used to display monochromatic graphical content, such as text, images,
humanmachine interfaces and other content. +") provides the connector and necessary interface for supporting
GLCD with resolution of 128x64 pixels and proper PINOUTs.It is compati le with the most popular LCD12864 in the
market with KS108 or ST7920 display controller.The example we provide is only for LCD12864 with ST7920 display
controller.The +") equips an universal socket allowing you to install 128*64 Graphical LCD very easily.
IMPORTANT:
Make sure to Place the LCD1602 in the right direction.
Make sure to turn off the power supply before placing LCD onto the board. Otherwise your display can be
permanently damaged.
PICEK™ Development Board Users Manual
www.LogiFind.com 20
`
5+/=G'/5103:
Connector pinout explained:
1GND
2VCC
3Vo,
GLCD contrast level from potentiometer 5
4RS,
Data (High), Instruction (Low) selection
5R/W,
Determines whether display is in Read or Write mode.
6E,
Display Ena le line
7~14,D0–D7,
Data lines
15PSB,
Parallel/Serial Mode Selection
16RB4
17RST
18VEE
19LEDA
5V
20LEDK
– GND
IMPORTANT:
Make sure to Place the LCD12864 in the right direction.
Make sure to turn off the power supply before placing LCD onto the board. Otherwise your display can be
permanently damaged.
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