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ENK805X Development Board Reference Design User Manual

iENK.com Proprietary

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Version:1.01 2009/10/14 Copyright iENK.com

Features Introduction

l MCU:ATMEL AT89S52 (also can support AT89C51/AT89C52/AT89S51)/ISP connector for in-circuit

programming.

l RS-232 serial port interfacing.

l 1602 LCD connection port.

l 1 * RS-232 communication for connection with a PC.

l Digital LED display with 6 bit and 7 sections.

l 8 LEDs are provided.

l RELAY with 3A/30VDC 3A/220VAC NO and NC contacts with screw terminals.

l 2-ch. DC motor driver with indicators. Support motor voltage 1.5 to 5Vdc.

l Beeper.

l 4 buttons are provided.

l Small (98mm x 47mm x 15mm).

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1 ENK805X KIT Board Schematic

1.1 Introduction

This document includes design information, schematics and parts list, for the ENK805X KIT reference board.

1.2 Revision History

The revision history for this document is provided in the following table.

Table 1-1 Revision history

Version data Description

1.00 October 13, 2008 Initial release

1.3 Schematic

The schematic is not optimized for production due to its conservative design approach.

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1 2 3 4

A

B

C

D

4321

D

C

B

A

Title

Number RevisionSizeA4

Date: 16-Oct-2009 Sheet of File: F:\prjmanger\2009NET\NET-KEYV2.ddb Drawn By:

EA/VP 31

X119 X218

RESET9

RD17 WR16

INT012INT113T014T115

P101P112P123P134P145P156P167P178

P00 39P01 38P02 37P03 36P04 35P05 34P06 33P07 32

P20 21P21 22P22 23P23 24P24 25P25 26P26 27P27 28PSEN 29ALE/P 30TXD11 RXD10

VCC 40

GND20

U4

AT89 S52

ENK805X Development Board KIT Schematic

NOTICE:The RFRX connect part is external function extend application

+5V

E NTE R

1 1.0 59 2MHz

C2C13 3p F

+5V

R1 1 0K

C6

1 04

12

3456789

10111213141516

U1 MAX23 2

C4

1 04

R11

10K

R12

10K

C3

1 04

R13

10K

C5

1 04

JP1

+5V

K1

RELAY

JP3 JUMP

R14

1K

+5V

+5V

Q1

9 01 4

Q2

9 01 4

K6

K7

Q3

9 01 4

K8

K5

Q4

9 01 4

UP

DW

Q5

9 01 4

REST

Q6

9 01 4

123

J5

RELAY OUT

D2

1N4

14

8

Q7

9 01 2

Q8

9 01 2

K1

K2

123

J1

DB9

K3K4

R10

1K

D0 7D1 8D2 9D3 10D4 11D5 12D6 13D7 14

E 6

RS 4RW 5

VCC 2VSS 3

GND 1

A 15K 16

LCD

1 60 2

K5K6

MISO

K7K8

K0

R7

1 0K

SP

C82 .2u F/ 16 V

OAVCCVCCOB GND

IAIB

GNDU3

R8

1 0K

K4

D5 D4

SCK+5V

K3

D7 D6

MOSIIB

D9 D8

RESTIA

D3D10

JP2

8 X2

+5V

+5V

PWS

R3

1 0K

k0

R4

1 0K

REST

R5

1 0K

R16 1 0K

R6

1 0K

SCK

C10

1 00 uF/16 V

1234

J4

MOTOR

JP4

3 X2

K1

MISO

BELL

IA

R 2 1 0K

MOSI

+5V

IB

C9 1 04

R15

1 K

C7

2 .2u F/ 16 V

+5V

8 9SXX ISPISP

LE D

R9

1 0K

1234

J3

RFRX

K2

R17

3 00 R

C11

2 .2u F/ 16 V

D1 1 N4 00 7

SP

+5VALE/PPSENP27P26P25P24P23P22

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

E xtend ed pi n

P21P20

+5VP00P01P02P03P04P05P06P07

+5V

ALE

/PPS

EN

P27

P26

P25

P24

P23

P22

P21

P20

+5V

P00

P01

P02

P03

P04

P05

P06

P07

A B C D E F G P V1 V2

U5

A B C D E F G P V1 V2

U6

A B C D E F G P V1 V 2

U7

J2

DC 9 V

GN

D

OU

T

IN

U2

7 80 5

TXD

RXD

GND

10/14/2009Ver 1 .01

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Package includes the following item:

1. ENK805X ATMEL 8051 Development Board * 1 ( included 1pcs AT89S52-24(PU) Chip)

2. 3pin Experimental wire * 1

3. 4pin Experimental wire * 1

4. Nuts and Screws set * 4

5. user manual please download for www.ienk.com

Notice:

Worldwide shipping by Registered Air Mail---- about 5-15days

support AT89C51/AT89C52/AT89S51 support AT89C51/AT89C52/AT89S51 ……

PO

WE

R S

witch

DC

9V IN

PU

T

+

DC

Motor signal input sw

itch

FUN

KE

Y3

FUN

KE

Y2

FUN

KE

Y1

SY

S R

ES

ET

LED

*8

LCD

1602 PO

RT

PO

WE

R LE

D

8Led & Lcd1602 sw

itchM

otor drive chip

Standard IS

P Interface

RF RX module interfaceDigital LED 6 bit and 7 sections

Serial O

utput Interface

RS

232 chipM

otor chip OU

T

ENK805X Borad functional description √

L:98mm

W:47m

m

Beeper

ATMEL AT89S52 Development Board KIT ENK805XENK805X Functional diagram

6 bit 7sections Digital LED connection port connection port

ATMEL AT89C51/C52/S51/S52/S53/...

MO

TOR POWER

SWITCH

P0,P2

LCD1602

LED*8

RST KEY1 KEY2 KEY3BEEPER

ISP

RS

232

RELAYP1 P3

Board size: 98 x 47 x 15(mm) Model: ENK805X

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Power Connection Power modules supplies power for the entire development board ENK805X, it provides

5VDC output for all functional modules to work. Power Interface shown in Figure.

The connection needs through the external input direct-current power supply, the input range in 6V~12V, to recommend 9V the voltage. Note: The interface to the center of the positive.

LCD power supply and 8*LED power supply switching

In the figure above demonstration is 8*LED the power source condition

In the figure above demonstration is LCD the power source condition

Power witch

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Serial port connection explanation As shows, black 3Pin part for serial port output connection position. The design idea is facilitates other modules the connection. The serial port may connect computer's serial port position.

DC motor drive connecting the output DC motor driver IC is the completion of a similar DIY robot movements and toy car motor drive motor drive. It can drive one or two motors running.

Please note: I do not recommend you use it to drive high-power DC motor, due to driver IC connected to the L7805, power the greater the power consumption may increase in L7805. Possibly will damage the power supply chip-L7805.

RXD

TXD

GND

GND M1 GND M2

M

M

M

GND M1 GND M2

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Relay control output Relay outputs can be isolated for high-voltage electrical switch control. The relay outputs has two cluster switches, a group is often open, a group is often closed. You may need to implement an external device according to the switch control.

Please note: Use the relay switch, try not to use high-voltage electrical equipment to do controlled experiments. In order to avoid electric shock accident.

External Control Interface the 6Pin jack, uses in the external signal the input. Such as the RF received signal. You can programmatically control the input or output. At the same time you can refer to ENK schematic to understand and learn.

You can contact me via e-mail way, tell me all the problems you encounter, I will try to help you. Be happy to help you.

!

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ISP programming

ENK805X development board offers a standard ISP programming interface AT89S52 Chip, you can be very easy to use with the ISP to connect to the control of programmers.

You can through the website http://www.ienk.com/documents.php?type=3, download digital LED test code. File Name: ledclock.hex. Test ENK805X digital LED, the following is my own computer presentations.

ISP Interface

ISP program downloader

The device does not exist ENK805X capacity to buy goods in the list

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Last note: I am writing skills in English is not good, please excuse. The case in the use ENK805X process, have any questions please send an e-mail to me. Email: info@ienk.com or chunweb@gmail.com Regards, Brian.song