User Manual 8051 Training Kit

8051 ETK USER MANUAL

MICROCONTROLLER TRAINING AND DEVELOPMENT KIT

2

CONTENTS

1. THE 8051ETK-01 TRAINING AND DEVELOPMENT KIT………….3 2. PACKAGE CONTENTS………………………………………………..4 3. FEATURES AND SPECIFICATIONS…………………………………5 4. SAFETY GUIDELINES…………………………………………………6 5. 8051ETK-01 BOARD LAYOUT………………………………………..7 6. HARDWARE DETAILS OF 8051ETK-01……………………………..8

a. POWER MODULE………………………………………………..9 b. RESET CIRCUIT…………………………………………………10 c. DISPLAY MODULE……………………………………………...11 (i) LED ARRAY………………………………………………...11 (ii) 7-SEGMENT DISPLAY……………………………………...12 (iii) LCD DISPLAY………………………………………………...13 d. A/ D CONVERSION MODULE………………………………....15 (i) SENSOR AND ANALOGUE INPUT CIRCUIT……….....15 (ii) ADCO8O4…………………………………………………...17 e. OUTPUT CONTROL DEVICES……………………………….19 (i) TRIAC (AC SWITCH)……………………………………...19 (ii) DARLINGTON TRANSISTOR (DC SWITCH)…………..20 (iii) RELAY (AC / DC SWITCH)………………………………..20 f. ANALOGUE COMPARATOR………………………………….21 g. EXTERNAL INTERRUPT AND EVENT SWITCHES……….21 h. SERIAL COMMUNICATION…………………………………...22 j. BUZZER………………………………………………………….23

7. 8051 PROGRAMMER………………………………………………...25 8. SOFTWARE…………………………………………………………...26

a. KEIL COMPILER…………………………………………………..26 b. EZ-DOWNLOADER……………………………………………….26

3

8051ETK-01 TRAINING AND DEVELOPMENT KIT

The Intel MCS-51 series of microcontrollers is widely recognized as a standard for incorporation into wide range of products from automatic washing ma-chines, vending machines, digital weighing machines, welding machines, mi-crowave ovens and robot control cards to programmable logic controllers (PLCs). Their simplicity makes them ideal for situations where it is necessary to quickly set up a control system. The 8051 microcontroller is versatile and easily programmable. It finds extensive applications in automation because of its sim-ple architecture and built in I/O capabilities. The use of this controller consid-erably reduces the chip count.

8051 Evaluation and Training Kit (8051ETK-01) is based on AT89C51 and is designed specifically for studying the functionality of MCS-51 microcontrollers through experimentation. It is a dynamic learning platform, specifically de-signed keeping in view the requirements of both small scale and large scale projects. 8051ETK-01 is a multi-purpose development kit and is used for imple-menting prototypes for evaluation. The 8051ETK-01 is aimed to train a wide range of users from beginners to technicians, students, hardware designers and experienced engineers. Using 8051ETK-01 just about anyone can easily implement a prototype for evaluation.

8051ETK-01 is also designed with features which make it ideal as a first step educational tool, as well as an advanced and powerful development platform. The manual contains a start-up guide and a walk-through of the major modules and components of the kit and their functionalities. It also contains comprehen-sive block diagrams and figures of the kit, safety precautions for using the kit and maximum and minimum power ratings. Sample codes, tutorials, lectures and datasheets of all the components used are given in the 8051ETK-01 CD. The 8051ETK-01 kit also includes 8051 Programmer for burning Hex file into the microcontroller. The EZ-Downloader is the software of programmer which is also available on the CD supplied with the kit.

It is hoped that the user will have as much pleasure using the kit as we had designing it!

“The Design Team”

4

PACKAGE CONTENTS

The complete kit contains the following items

• 8051ETK-01 Training and Development Board. • 8051 Programmer. • User Manual. • Serial Cable. • AC Adapter. • HD44780 20 × 2 Line LCD. • Data Cable for LCD • 8051ETK-01 CD

• Keil µVision2 Software - Full Version (4K). • E-Z Downloader Software. • Sample Codes in C and Assembly language. • Lectures on 8051 Microcontroller. • Computer Based Tutorials for use of Keil µVision2 Software. • Datasheets of ICs used.

5

FEATURES AND SPECIFICATIONS

The salient features of the 8051ETK-01 board are as under:-

• On Board Regulated Power Supply

• 8-bit A/D Module for Real Time Data Acquisition

• RS232 Serial Interface

• Expandable (can be interfaced with other devices and hardware) and

flexible

• Output Devices includes:

ο 8 x LEDs

ο 4 x Seven Segment Displays

ο 2 x 20 Line LCD

ο 3 x status LEDs

ο Power Supply

ο Condition monitoring

ο Relay status

ο 1 x Triac (for AC load)

ο 1 x Darlington ( for DC load)

ο 1x DPDT 12 V DC Relay

ο Buzzer

ο ZIF Socket for Microcontroller

ο 5 x Momentary Switches

ο Prototype Area ( Plated Through Hole on 0.1” x 0.1” Grid )

All ICs mounted on bases

6

SAFETY GUIDELINES

This section contains notices intended to ensure personal safety, as well as to

protect the products and connected equipment against damage.

• Always use the recommended power supply or power ratings.

• Do not remove any component while the power is switched on.

• Do not remove the microcontroller from the programmer during the burn-

ing process. Doing so may end up in damaging the controller perma-

nently.

• While mounting the microcontroller on the ZIF sockets (of both Develop-

ment board and Programmer), keep in mind the correct direction of the

microcontroller.

• While testing any of the output displays (LED array, 7-segment or LCD),

select the jumpers according to the guidelines (given in corresponding

section) for correct functionality.

• Avoid continuous non-multiplexed glow of LEDs or 7-Segment Display

due to power rating constraints of on board regulators etc

• While plugging the LCD cable, keep in mind the correct direction of the

cable.

• Do not adjust the pot knobs without going through the details of their

working. Doing so may disturb the resolution of ADC.

• Do not touch the heat sinks, they may singe

7

8051ETK-01 BOARD LAYOUT

8

HARDWARE DETAILS OF 8051ETK-01

In 8051ETK-01 board, all the four ports of the microcontroller are fully

used and yet are flexible for external / specific use by the user. For this

purpose, P0, P1, and P2 have been provided with 2x4 headers for external

use. The headers are identified by Port 0, Port 1 and Port 2 on the board.

The layout of the headers is shown in the FIG 1.

As P0 of the microcontroller needs external pull up resistors, a resistor

pack RP2 of (8x4.7K) is connected with Port 0.

P2 on the 8051ETK-01 board is so connected that its output/ control sig-

nals can be either activated or deactivated. For this purpose, Port 2 of the

microcontroller is connected for controlling the on-board devices through

an 8 x DIP switch SW2 as shown in the schematic of FIG 2. The devices

can be isolated from the Port if the switches are at off position.

9


Hardware of the 8051ETK-01 board has been divided into various modules

which are explained as follow.

a. POWER MODULE

The kit is supplied with an AC Adapter of the following electrical ratings and is the main source of Power Supply:

Input Voltage : 220 VAC Output Voltage : 16 VDC Output Current : 800 mA

The output of the adapter is connected to the AC / DC IN connector on

the board, which has the capability to get AC as well as DC input volt-

age. In case of AC input, the AC voltage is converted to DC through a

bridge rectifier “B" and filter circuit comprising of capacitors C2, C3 and

C4. If adapter is not available, DC input (16 - 18V) can also be applied to

the DC IN connector on the board through a bench-top power supply.

The voltage is then passed through on-board voltage regulators 7812

and 7805 for 12V and 5V DC respectively. These voltages are used for

proper functioning of the board.

PWR LED ( FIG 3b )will lit if board supply is proper. The schematic of

power supply circuit is shown in FIG-4.

Power Enable / disable Jumpers (12V, 5V, GND), shown in FIG 3a are

provided as a safety precaution, fault tracking and for external power

supply (if needed). When starting up 8051ETK-01 for the first time re-

move all the three jumpers and check the voltages between 12V & GND

jumper and 5V & GND jumper respectively, using a multimeter. Now to

start-up 8051ETK-01 insert all the three jumpers again and switch ON

10


power supply. Removing a single jumper will disable 8051ETK-01 as current

will not be delivered to the board.

If for a particular project, user feels that on-board regulator’s ratings are in-

sufficient then these regulators can be bypassed and external supply of suf-

ficient rating can be connected to these jumpers as shown in FIG 3 (a).

b. RESET CIRCUIT The reset input is the RST pin, which is input to a Schmitt trigger. The re-

set is accomplished by holding the RST pin high for at least two machine

cycles, while the oscillator is running.

12V

■ ■

FIG 3: (a) Power Supply Jumpers

5V (Vcc)

■ ■

GND

■ ■

R1

V cc

PWR LED

(b) Power Indicator LED

FIG 1: Power Module

12V

1 3

2

V GND IN VOUT

7805

+

1 3 2

V VOUT GND IN 7812

1 2

AC/DC

VCC IN DC IN 12V IN

AC

AC

+

AC2

AC

- -

B + +

1 2 DC IN

S

D1 1N4004

1 2

1 2 5V

12V

VCC 1 2 GND C4

GND

FIG 4: Power Supply Circuit

C3 C2

-

11


An automatic reset can be obtained when Vcc is turned on by connecting

the RST pin to VCC through a 10µF capacitor (C14) and to ground through

an 8.2 k resistor (R7) providing the Vcc rise time does not exceed 10 ms.

For manually resetting the controller in 8051ETK-01 board, the yellow RST

push button is available on the board. The Power ON Reset and Manual

Reset circuits are shown in FIG 5.

c. DISPLAY MODULE

In 8051ETK-01 board, Port 0 of the microcontroller is connected to three

different type of displays i.e. LED Array, 7-Segment Display (SSD) and

Liquid Crystal Display (LCD). Each one can be enabled through respective

jumpers on the board.

(i). LED ARRAY

8 x LEDs named P0.0, P0.1, P0.2, P0.3, P0.4, P0.5, P0.6, P0.7 are

connected as active high for controlling from Port 0 of the microcon-

troller through ULN2803 IC. ULN2803 is an 8-bit, 50V, 500mA, TTL-

C14

R7

VCC

RST

R8

VCC

RESET

FIG 5: Reset Circuit

9

mC

12


input, NPN Darlington driver. The IC ULN2803 is used for driving high current LEDs. In order to select LEDs out of other display devices i.e. SSD and LCD, the jumper < LED 7-SEG > should be fixed on left as

(ii). 7-SEGMENT DISPLAY

4 Digit, Common Anode SSD is available on the board. These digits are

named DIG1 (MSD), DIG2, DIG3 & DIG4 (LSD). The data bus (7-

Segments) of the display is active high and is connected to Port 0 of the

microcontroller through ULN2803 as shown in the FIG 7 and FIG 8.

■ ■

< LED 7-SEG >

VCCP0.0P0.1P0.2P0.3P0.4P0.5P0.6P0.7

dp g f e d c b a

1 2 3

FIG 6: LED Array

IN1

COM10 OUT 18U5A

IN2

COM10 OUT 17U5B

IN3

COM10 OUT 16U5C

IN4

COM10 OUT 15U5D

IN5

COM10 OUT 14U5E

IN6

COM10 OUT 13U5F

IN7

COM10 OUT 12U5G

IN8

COM10 OUT 11U5H

P1.0P1.1P1.2P1.3P1.4P1.5P1.6P1.7RESETP3.0/RXDP3.1/TXDP3.2/INT0P3.3/INT1P3.4/T0P3.5/T1P3.6/WRP3.7/RDXTAL1XTAL2GND

Vcc 40

P0.0 39

P0.1 38

P0.2 37

P0.3 36

P0.4 35

P0.5 34

P0.6 33

P0.7 32

EA 31

ALE 30

PSEN 29

P2.7 28

P2.6 27

P2.5 26

P2.4 25

P2.3 24

P2.2 23

P2.1 22

P2.0 21

U4

VCC

abcdefgdpR21

R20R19R18R17R16R15R14

FIG 7: Port 0 Connections with ULN2803

13


4 Digits, i.e. DIG1, DIG2, DIG3 and DIG4 of SSD are active low and are

connected to P2.4, P2.5, P2.6 and P2.7 respectively through transistor

switches Q1, Q2, Q3 & Q4 respectively. In order to select the SSD the

jumper < LED 7-SEG > should be fixed as

Table 1

■ ■

a b f

c g

d e

VCC a b c d e f g dp dp

DIG4

a b f

c g

d e


DIG3

a b f c

g d e


DIG2

R31

VCC

a b c d e f g dp

DS1/RS DS3/WR DS2/EN DS4 Q1 Q2 Q3 Q4

1 2 3

R32 R33 R34

a b f

c g

d e


DIG1

< LEDs 7-Seg >

a b c d e f g dp

a b c d e f g dp

a b c d e f g dp

FIG 8: Seven Segment Displays with transistor switches

7-SEGs of SSD Port Pins Digits Port Pins

a P0.0 DIG1 P2.4 b P0.1 DIG2 P2.5 c P0.2 DIG3 P2.6 d P0.3 DIG4 P2.7 e P0.4 f P0.5 g P0.6 dp P0.7

14


(iii). LCD DISPLAY.

Provision has also been kept to attach a 20 x 2 line or 16 x 2 line LCD

on the board through 8x2 header connector named LCD Port with rib-

bon / data cable, provided with the kit. The data bus (D0 ~ D7) of the

LCD displays is connected to Port 0 of the microcontroller as given in

Table-2. The control signals of LCD i.e. RS, EN & WR of LCD are con-

nected to P2.7, P2.6 & P2.5 pins respectively. In order to enable the

LCD, the jumpers LCD VCC > and LCD GND > should be fixed as

Table 2

■ ■ ■

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

LCD Port

D0 D1 D3 D5 D7

D2 D4 D6

VCC

DS3/WR DS1/RS DS2/EN

1 2 3 LCD VCC >

1 2 3 LCD GND >

FIG 9: LCD Port with Enable / Disable jumpers

LCD DATA BUS PORT PINS

LCD CON-TROL SIG-

NALS PORT PINS

D0 P0.0 RS P2.7 D1 P0.1 EN P2.6 D2 P0.2 WR P2.5 D3 P0.3 D4 P0.4 D5 P0.5 D6 P0.6 D7 P0.7

15

HARDWARE DETAILS OF 8051ETK-01 d. ADC MODULE

8051ETK-01 has an 8-bit A/D Module for real time data acquisition. The

core of this module is 8-bit A/D Chip ADC0804 (U3) on the board.

The other major components of the module are LM35 temperature sensor

(for analogue input voltage) and LM324 op-amp (for current and voltage

amplification).

(i). SENSOR AND ANALOGUE INPUT CIRCUIT

Analog IN is a 3-pin terminal on the board and is readily compatible for

analogue input voltage through LM35 temperature sensor. The LM35

series are precision integrated-circuit temperature sensors, whose out-

put voltage is linearly proportional to the Celsius (Centigrade) tempera-

ture. The output of the temperature sensor is linear with slope 10mV/

ºC.

The output of LM35 is to be compatible with input of the ADC. For this

purpose the output of LM35 is required to be amplified. This amplifica-

tion is done through LM324 (U2). LM 324 is a quad op-amp having four

independent, high gain op-amps. Connection diagram is shown. The

voltage from LM35 is amplified 5 times after a buffer (section A of the

LM324), gain of the amplifier (section B of the LM324) can be adjusted

FIG 10: LM35 Temperature Sensor

16


through the adjustment pot “Gain” which amplifies the maximum output

of LM35 up to 5V which corresponds to 100ºC. It means that total gain of

the amplifier required will be equal to 5 because the output of LM35 is

1V at 100 ºC. Since the amplifier is wired in non-inverting configuration

so the gain is expressed as:

If Rin = 10 k , then for Gain of 5, Rf must be equal to 40k. In 8051ETK-01, Rin = R5 = 10k and a 50k pot (Gain) is adjusted to have 40k feedback resistance (Rf )

415

15

1

=−=

+=

+==

in

f

in

f

in

f

in

o

RR

RR

RR

VVGain

Analog IN

2 3 1

4 11

U2A

5 6 7

4 11

U2

RR

R

Gain

12V

12V

ADC IN

Vi1 2 3

VCC

R+ C

+ _

FIG 11: Analogue input and Amplification circuit

17


(ii) ADC0804 The ADC0804 is an 8-bit, CMOS, successive approximation analog to digital converter, which has a 0-5V analogue input voltage range. It can be easily interfaced to most microprocessors and microcontrollers. It gives an 8-bit digital output with conversion time <100micro-seconds. The 8-bit Digital output from ADC is connected to the Port 0 of the micro-controller. The control signals of ADC i.e. WR (Start Conversion), INTR (End of Conversion) and RD (Output Enable) are connected to P3.7, P3.6 and to GND respectively. The functions of these control signals are explained below.

1. WR (Start Conversion): This control signal is input to the ADC from

the microcontroller. ADC starts conversion when it receives a low

pulse on this pin.

2. RD (Output Enable): This is also an input signal to the ADC. When

an active low pulse is received on it, the converted digital data

stored in the internal buffers of the ADC is latched on the output

pins (DB0-DB7) of the ADC. RD pin has been hardwired to ground

on the 8051ETK-01 development board.

3. NTR (End of Conversion): This is an output signal from the ADC.

At the end of conversion of a particular analog voltage sample to

the digital, the INTR pin makes a high-to-low transition.

Reference voltage Adjustment The resolution of ADC depends on the reference voltage VREF of the

ADC. If VREF = 5.12 V, then Resolution = 5.12 / 28 = 5.12 / 512 = 20mV.

For maximum application flexibility, these A/Ds have been designed to ac-

commodate a 5.12V, 2.56V or an adjusted voltage reference. Notice that

18


the reference voltage for the IC is either 1/2 of the voltage which is ap-

plied to the Vcc supply pin, or is equal to the voltage which is externally

forced at the VREF/2 pin. This allows for a pseudo-ratio metric voltage

reference using, for the V+ supply, a 5V reference voltage. Alternatively,

a voltage less than 2.56V can be applied to the VREF/2 input. The inter-

nal gain to the VREF/2 input is 2 to allow this factor of 2reduction in the

reference voltage.

< ADC ENB >

XTAL

C15

C16

VccR

EF20

Vin(-)7 lsbDB0 18DB1 17

Vin(+)6 DB2 16DB3 15DB4 14

A-GND8 DB5 13DB6 12

msbDB7 11Vref/29

INTR 5

CLK-R19 CS 1RD 2

CLK-IN4 WR 3

U3

R6

C6

VCC

ADC IN

RESETRXDTXD

P1.01P1.12P1.23P1.34P1.45P1.56P1.67P1.78RESET9P3.0/RXD10P3.1/TXD11P3.2/ INT012P3.3/ INT113P3.4/T014P3.5/T115P3.6/WR16P3.7/RD17XTAL118XTAL219GND20

Vcc 40P0.0 39P0.1 38P0.2 37P0.3 36P0.4 35P0.5 34P0.6 33P0.7 32

EA 31ALE 30

PSEN 29P2.7 28P2.6 27P2.5 26P2.4 25P2.3 24P2.2 23P2.1 22P2.0 21

U4

INT0INT1T0T1

12345678Port 1

1 2 3

<1.28 2.56>

1 2 3

2.56V1.28V

VREF

FIG 12: ADC0804 interface with microcontroller

C8

R1

Z1

1.28V C8

R1

Z2

2.56V 5.12V

R1

Z3

VREF 12V VCC VCC 1.28V 2.56V

FIG 13: VREF VREF / 2 adjustments

19


e. OUTPUT CONTROL DEVICES

These are three output control devices connected to the port 2 of the mi-

crocontroller. This will give experience of controlling / activating DC, AC

and Ac / Dc loads. The control devices are Triac, Darlington and Relay.

The connected load must not exceed the voltage/current rating of the de-

vices. The schematics, of these control devices and its brief description is

given in the succeeding paragraph

(i). TRIAC (AC SWITCH)

FIG 14: LCD Port with Enable / Disable jumpers

4N25

MOC3041

HOT TRIG

DAR

EXT PWR

R25 P2.1

P2.0

VCC

P2.0

4N25 Q5

P2.2 R24

12V

P2.

P2.1

Triac

TRIG

R2HOT PHASE

LOAD

1 2 3

AC Load

FIG 15: Triac Connections with optocoupler and load connector

20


(ii). Darlington Transistor (Dc switch) (iii) Relay (AC/DC Switch)

DAR R2

1 2 3

DC Load Darlington

EXT

R2

FIG 16: Darlington Connections with optocoupler and load connector

R22

Re-lay

1 2 3

Relay A

1 2 3

Relay B

D2

Q5

R23

12V

Q5

FIG 17: Relay Connections with optocoupler and load connector

21


f. Analogue Comparator

One of the four op-amps available in LM324 IC is used as analogue com-

parator in 8051ETK-01 board.

The two pin jumper Comparator above the RST switch can be used for

analogue inputs to the comparator. The right pin is negative while the left

pin is positive input terminal as shown. The output of the comparator can

be read through P2.3 with appropriate jumper settings. When the jumper

< Copm LED> is set at left, the port will be connected to the comparator

output whose status will be readable through software.

When the jumper < Copm LED> is set at right, the port will be con-

nected to the red status LED P2.3 as per schematic 13©

g. External Interrupts and Event Switches

External interrupt and even counter features of the microcontroller can

be simulated through push button INT0, INT1, T0, and T1 on the

8051ETK-01 board.

9 10 8

4 11

U2C LM324

COMP (P2.3)

1 2

Comparator 12V

Z4

R26

VCC

LED

P2.3P2.3

< Comp LED >

1 2 3

LED COMP

FIG 18: (a) Analogue Comparator (b) Selection jumper (c) Status LED

22


Pressing these buttons (while external interrupt/event enabled in the software) causes an interrupt (or counts an event) by providing a low pulse on the respective pin. The schematic is show. The two pin jumpers (Ext INT0, Ext INT1, Ext Event 0, Ext Event 1) provided with each button can be used for taking these interrupts/events form actual system / running project.

h. SERIAL COMMUNICATION MODULE

89c51 has a full duplex serial port. It is also a received buffer, meaning it

can commence reception of a second byte before a previously received

byte has been read from a register. The serial port receive and transmit

registers are both accessed at special function register SBUF.

Writing to SBUF load the transmit registers, and the reading SBUF ac-

cesses a physically separate receive register.

As 89c51 microcontroller operates at TTL level (0-5V) but RS-232 stan-

dard in PCs is not TTL compatible. Its logic levels are -3 ~ -25 V for logic

1 and +3 ~ +25 V for logic 0. The data rate is not too high and as the

Ext INT0

1 2 1 2 Ext INT1

1 2

Ext Event0

1 2 Ext Event1

T1 T0 INT1 INT0 INT0

INT1 T0

T1

RP1

VCC

FIG 19: (a) Push Buttons (b) Jumpers for External connections

23


the cable length increases, the capacity and DC loading effect reduce the

noise margin to an unacceptable level. To overcome this short coming

and to communicate with non-TTL level (pc serial port) a voltage level in-

terpreter is needed. This interpretation is done through standard trans-

ceiver IC’s like MAX232.

The MAX232 (transceiver) accepts TTL level inputs and converts these

two RS 232 output voltage level and also performs the opposite conver-

sion.

On board RS 232 based serial interface has been provided so that serial

interfacing with PC is established for communication between the board

and PC. Pins P3.0 (TXD) are used for this propose and schematic of this

circuit is shown in Fig.20.

j. BUZZER

In 8051ETK-01 board, BUZZER is connected to P3.5 of the microcontrol-

ler for giving alarms and generating tones of different frequencies de-

pending on the application. . It is connected in active low configuration

1 6 2 7 3 8 4 9 5

TXD RXD

1 8 3 4 5

6

7

2

10 9

15

16

U1

C1

C1

C1

C1

RS232

VCC

FIG 20: DB9 Connector and MAX232 IC

24


i.e. it sounds by writing “0 “to the port pin in software or by pressing push button T1 which results in completing the circuit by connecting the negative terminal of the buzzer to Ground. The schematic of the buzzer circuit on 8051ETK-01 board is shown in Fig-21 .

+

-

R10

T1

BUZZER

VCC

FIG 21: Buzzer Interface

25

8051ETK-01 PROGRAMMER

The 8051ETK-01 Programmer included in the Kit is used to burn hex files

into the microcontroller. It has the same ZIF socket as the 8051ETK-01

Development Board and care must be taken to insert the controller in the

right direction into the ZIF socket. The programmer is supplied with

8051ETK-01 Downloader software and the AC adapter. The AC adapter

provided is used to power up the Programmer. An LED on the programmer

board blinks when the programmer is powered up to indicate it is active.

The same LED glows blue and red alternately with greater intensity while a

hex file is being burnt into the controller. At the end of the programming the

LED resumes its blinking status.

AT 89C51

A

AT 89C51

AT 89C51

FIG 22: (a) Master Controller Inserted, showing the Direction of Target Controller

(b) Target Controller inserted in the right Direction in the ZIF socket

26

SOFTWARE

a) Keil Compiler

Keil µVision2 is an Integrated Development Environment specifically

designed to make it easier to get started with application development.

It is a GUI platform designed for writing, compiling and simulating MCS-

51 based microcontroller applications. Codes can either be written in C

language or assembly language. The software includes debugging

modules which help the user test applications. Users can simulate

UART, I/O ports, interrupts and timers etc. The 8051ETK-01 CD con-

tains Keil µVision2 software and computer based tutorials.

b. EZ-Downloader (EZDL V4.1)

EZ-Downloader software burns the generated hex file into the microcontrol-ler. It has the following functionalities: 1.Reads hex file

2.Erases the previous hex code from the microcontroller

3.Writes the hex file into the target microcontroller

4.Verifies the signature bytes on the microcontroller

5.To Lock & Fast Verify, Check manually the Lock & Fast Verify options

shown in the window

FIG 23: Snapshot of EZ-Downloader software

User Manual 8051 Training Kit

Documents