Добавил:

ivanov666 Опубликованный материал нарушает ваши авторские права? Сообщите нам.

Вуз:

Томский Государственный Университет Систем Управления и Радиоэлектроники

Предмет:

[НЕСОРТИРОВАННОЕ]

Файл:

Отладочная плата VX MEGA-128

..pdf

Скачиваний:

Добавлен:

05.02.2023

Размер:

2.84 Mб

Скачать

☆

<<< < Предыдущая 1 23 / 53 4 5 > Следующая >>>

ÏриложениеП 1. ÎписàниеО а отлàдочнойа плàтыа VX-Mega128

VX-Mega128 : ATmega128 Microcontroller board documentation 1

VX-Mega128

ATmega128 Microcontroller board

1. Features

Support the ATmega128 with Flash memory of 128KB. Clock rate 14.7456MHz

34 I/O port of microcontroller are using INEX’s standard PCB-3 pin connector.

LCD16x2 module

4 of Button switches

Binary Switch

USB port with FT232RL USB to Serial converter circuit.

ATmega128 pre-programmed Boot loader, programmable via USB port.

8-ch. Analog input with 10-bit Analog to Digital Converter

32KB RAM / 32KB EEPROM memory module plug on top

Support In-system Programming via ISP connector with PX-400 Programmer

Supply voltage +9V from external. +5V 500mA on-board regulator.

Includes : ATmega128 Microcontroller board, Plugable Memory module, USB cable, CDROM and Documentation.

ÏриложениеП

1. ÎписàниеО а

отлàдочнойа

плàтыа

VX-Mega128

diagram schematiuc scetiob Microcontroller 1 Figure

PB5

PB6

PB7

PE3

PE4

PE5

PB0

PB1

PB2

PB3

PB4

documentation board Microcontroller ATmega128 : Mega128-VX 2

(PWM5) (PWM4) (PWM3) (PWM2) (PWM1) (PWM0)

(SS)

(SCK)

(MOSI)

(MISO)

(OC0)

+5V

ISP : In-System

+5V

Programming

PORT

MOSI

Vcc

+5V

10k

GND

RST

GND

SCK

GND

+5V

MISO

GND

+5V

RESET

0.1µF

VCC

PB5 (OC1A)

PB6 (OC1B)

PB7 (OC2/OC1C)

PE3 (OC3A/AIN1)

PE4 (OC3B/INT4)

PE5 (OC3C/INT5)

PB0 (SS) PB1 (SCK)

PB2 (MOSI)

PB3 (MISO)

PB4 (OC0)

PE1 (TXD0/PDO)

PE0 (RXD0/PDI)

PEN

PF0

16V

10k

(ADC0)

GND

(Optional)

GND

AREF

GND

+5V

PF1

+5V

(ADC1)

0.1µF

16V

RTCX1

JP1

+5V

JP2

PF2

(ADC2)

XTAL2

AVcc

AREF

AVcc

32.768kHz

ADC0

ADC1

2.2k

RTCX2

ADC2

ADC3

PF3

0.1µF

22pF

ADC4

ADC5

(ADC3)

PD0

16V

(SCL/INT0)

ADC6

ADC7

GND

PF4

PD1

(ADC4)

(SDA/INT1)

ADC port

XTAL1

PF0 (ADC0)

14.7456MHz

PF1 (ADC1)

PF5

22pF

PD2

(ADC5)

PF2 (ADC2)

(RXD1/INT2)

IC2

RST

PF3 (ADC3)

PD0 (SCL/INT0)

ATMEGA128-16

PF4 (ADC4/TCK)

PF6

PD3

(ADC6)

PD1 (SDA/INT1)

PF5 (ADC5/TMS)

(TXD1/INT3)

PD2 (RxD1/INT2)

PF6 (ADC6/TDO)

PD3 (TxD1/INT3)

PF7 (ADC7/TDI)

PF7

PD4

+5V

(ADC7)

PD4 (ICP1)

(ICP1)

PD5 (XCK)

PD6 (T1)

(WR)

(RD)

(A15)

(A14)

(A13)

(A12)

(A11)

(A10)

(A9)

(A8)

(ALE)

(AD7)

(AD6)

(AD5)

(AD4)

(AD3)

(AD2)

(AD1)

(AD0)

PD7 (T2)

0.1µF

+5V

PG0

PG1

PC7

PC6

PC5

PC4

PC3

PC2

PC1

PC0

PG2

PA7

PA6

PA5

PA4

PA3

PA2

PA1

PA0

16V

Vcc-IO

Vcc

RST

WR 33

RD 34

A15 42

A14 41

A13 40

A12 39

A11 38

A10 37

A9 36

A8 35

ALE 43

AD7 44

AD6 45

AD5 46

AD4 47

AD3 48

AD2 49

AD1 50

AD0 51

TxD

VR1

RST

RxD

LED2

LED1

10k

0.1µF

POWEREN

LCD

16V

17 3V3 OUT

USB

DATA

TXLED

CONTRAST

RXLED

Mega128-VX

0.1µF

16V

VCC VEE RS R/W

AD0

AD1

AD2

AD3

21 GND

26 TEST

+5V

D -

25 AGND

DSP1

LCD MODULE

GND

D +

18 GND

VX-Mega128GND

16 CHAR. X 2 LINES

AD4

AD5

AD6

AD7

GND GND

SCL SDA

WR RD

A8 A9

A10 A11

A12 A13

A14 A15

RST ALE

AD7 AD6

AD5 AD4

AD3 AD2

AD1 AD0

+5V +5V

ATmega128

EXPANSION BUS

IC1

USB

FT232RL

board

AVR Microcontroller

to I/O section

Part 1 : Main section

ÏриложениеП 1. ÎписàниеО а отлàдочнойа плàтыа VX-Mega128

VX-Mega128 : ATmega128 Microcontroller board documentation 3

2. Circuit and Memory map

The VX-Mega128 microcontroller board schematic diagram is splited to 3 sections. The microcontroller section schematic diagram is shown in figure 1. Input/Output port and external device interface schematic diagram is shown in figure 2 and figure 3 shows the circuit of Memory extension module.

+5V

C10

0.1µF

to MAIN section

50V

0XF000 WR

A10

0XF000 RD

A11

+5V

0XF400 WR

+5V

0XF400 RD

+5V

0XF800 WR - PORT D.OUT

0XF800 RD - PORT D.IN

D.IN0

5 IC4/1

CS1

0XFC00 WR

A12

CS3

A13

IC4/2

CS2

0XFC00 RD - SWITCH

D.IN1

A14

IC3

74AC138

A15

IC4/3

IC4

74AC00

D.IN2

D.IN3

IC4/4

+5V

R11

+5V

R10

C11

C12

10K*8

0.1µF

50V

D.IN4

50V

AD0

R12

D.IN5

AD1

R13

AD2

R14

AD3

R15

D.IN6

AD4

R16

AD5

R17

AD6

R18

D.IN7

AD7

R19

IC4

OE1

R12-R19

150 X 8

74AC541

GND

OE2

GND

IC5

+5V

74AC573

R20

C13

10K*8

0.1µF

BINARY

SWITCH

50V

AD0

IC7

78R05

AD1

AD2

DC.input

SHDN

C16

AD3

6-12V

BD1

220µF

AD4

1A50V

OUT

25V

AD5

AD6

C14

GND

C15

AD7

1000µF

220µF

6.3V

25V

OE1

GND

OE2

IC6

74AC541

D.OUT0

D.OUT1

D.OUT2

D.OUT3

D.OUT4

D.OUT5

D.OUT6

D.OUT7

+5V

R21

510

LED3

POWER

VX-Mega128

AVR Microcontroller SW1 SW2 SW3 SW4 Part 2 : I/O section

and power supply

Figure 2 I/O port and external device interface schematic diagram of VXMega128 microcontroller board

ÏриложениеП 1. ÎписàниеО а отлàдочнойа плàтыа VX-Mega128

4 VX-Mega128 : ATmega128 Microcontroller board documentation

	+5V
C17
0.1µF				GND	GND
50V		8		GND	GND
50V		8		SCL	SDA
		VCC		SCL	SDA
1		VCC
1	A0	SDA	5	WR	RD
2	A1	SDA	5	A8	A9
2	A1	SCL	6	A8	A9
3	A2	SCL	6	A10	A11
7	WP			A12	A13
4	GND			A14	A15
				RST	ALE
		IC8		D7	D6
	24C256			D5	D4
	(32K X 8BIT)			D5	D4
	(32K X 8BIT)			D3	D2
				D3	D2
				D1	D0
				+5V	+5V	+5V
						+5V
					K4
				ATMEGA128
				EXPANSION BUS

		+5V
					C18
					0.1µF
		20			50V
		20
AD0	2	D0	Q0	19	A0
AD1	3	D1	Q1	18	A1
AD2	4	D2	Q2	17	A2
AD3	5	D3	Q3	16	A3
AD4	6	D4	Q4	15	A4
AD5	7	D5	Q5	14	A5
AD6	8	D6	Q6	13	A6
AD7	9	D7	Q7	12	A7
ALE	11	LE			IC9
				74AHC573
		OE
		1	10

+5V

C19

0.1µF

50V

AD0

AD1

AD2

AD3

AD4

AD5

AD6

AD7

A10

A11

A12

A13

A14

IC10

A14

SRAM

62256

(32K X 8BIT)

A15

Figure 3 Data memory extension module schematic diagram

ATmega128 operates with clock frequency 14.7546MHz from external crystal circuit. The crystal 32.768kHz is connectede to ATmega128 for setting the clock frequency to support internal Real-time counter. Supply voltage +5V comes from external DC adaptor +9V (+16V maximum) via +5V regulator circuit with 78R05 ICs.

VX-Mega128 supports both in Single chip microcontroller mode and Microprocessor mode. ATmega128 interfaces with all external device via address assignment. In figure 4 shows the memory and I/O map of VX-Mega128 board.

External device that connected with ATmega128 are assigned in address F000H to FFFFH included :

(1) LCD module 16x2 : connect 8-bit data bus with AD0 to AD7 of ATmega128. It causes reading and writing via data bus instead direct interface.

(2) 4 of Input Switches (SW1 to SW4) : address at upper nibble of FC00H. Signal is buffered via 74AC541 IC.

(3) 4-bit binary Switch : trhis switch gives 4 binary bits. It means 16 different data 0000 to 1111 in binary base or 0 to 15 in decimal and 0 to F in HEX. Data from Binary switch are tranfered to data bus ; AD0 to AD3 via 74AC541 buffer IC and assigned at lowewr nibble of FC00H.

ÏриложениеП 1. ÎписàниеО а отлàдочнойа плàтыа VX-Mega128

VX-Mega128 : ATmega128 Microcontroller board documentation 5

FFFFH			FFFFH		FFFFH
	I/O address	Not used		Switch
F000H				Switch
F000H				Input
EFFFH				Input
			FC00H		FC00H
			FBFFH		FBFFH
			FBFFH		FBFFH
	Not used	Digital port		Digital port
		Digital port		Digital port
		data Output		data Input
8000H			F800H		F800H
7FFFH			F7FFH		F7FFH
7FFFH			F7FFH		F7FFH
	28KB from 62256	Not used		Not used
	28KB from 62256
	external RAM		F400H		F400H
			F3FFH		F3FFH
			F3FFH		F3FFH
1000H
0FFFH		Not used		Not used
0FFFH	Internal 4KB of	Not used		Not used
	Internal 4KB of
0000H	ATmega128		F000H		F000H

	ATmega128
	ATmega128	R/W = "0"		R/W = "1"
		R/W = "0"		R/W = "1"
		Write mode		Read mode

Figure 4 Memory and Input Output port organization of VX-Mega128 micrcocontroller board

Also the digital input and output port of VX-Mega128 board are assigned via address map system as follows :

Digital input port D.IN0 to D.IN7 are assigned at F800H address.

Digital output port D.OUT0 to D.OUT7 are assigned at F800H address too.

but active with WR signal insterad.

All interface port include Analog to Dital converter module input are connect to INEX 3-pin PCB connector. User can connect with INEX many sensors and modules.

VX-Mega128 board supports 8-channel of Analog to digital converter. User can select supply voltage and reference for ADC module with 2 jumpers JP1 and JP2. If fit all, selects ADC module to use supply and reference voltage at +5V. If remove all, user can apply the voltage at these points. The limitation is reference voltage must lower or equal the supply voltage of ADC module. Normally, fit both jumpers on the board.

Computer interface of VX-Mega128 board via USB. The heart of this function is FT232RL the USB to Serial converter chip. Thus, interface signal is serial and connect to UART1 module in ATmega128. The programming shall be easier and supports all modern computer includes labtop which not serial port available.

Addition user can program microcontroller’s flah memory via USB interface. Because ATmega128 microcontroller will be pre-programmed the bootloader ready. It means this microcontroller baord can program the flash 2 ways. One is via ISP connector with external In-System Programmer such as PX-400. Another is via USB with bootloader (Atmega128 must pre-rpogrammed ready).

ÏриложениеП 1. ÎписàниеО а отлàдочнойа плàтыа VX-Mega128

6 VX-Mega128 : ATmega128 Microcontroller board documentation

3. How to program the VX-Mega128 board

Flash programming ATmega128 on VX-Mega128 board has 2 methods.

(1) via ISP connector with external In-System Programmer : The suggession programmer is INEX’s PX-400 amd Atmel’s AVR ISP In-System Programmer

(2) via USB with bootloader : This method ATmega128 must pre-programmed bootloader firmware. INEX prepare ready to using. However user can re-program the bootloader with yourself by external programmer via ISP connector. In CD-ROM contain the HEX file of this bootloader. On VX-Mega128 board has FT232RL USB to Serial converter chip to interface the USB but in software will look as COM port. Signal from FT232RL are connected to SPI programming pin PDI (PE0) and PDO (PE1) of ATmega128. With this method, user no need the external programer to flash programming. Only plug USB cable between baord and computer. Open the suitable software. You can work with this microcontroller board.

4. Extension memory board

The memory board of VX-Mega128 is 64KB. Divides 2 parts. One is Static RAM 32KB ; 62256. However user can work only lower 28KB. Because upper 4KB is reserved by internal RAM data memory of ATmega128. Interfacing of this RAM work via the EXPANSION BUS. This bus provides 8-bit data/address lines; AD0 to AD7 and Address line A8 to A15, and all control signal.

Another memory part is serial EEPROM 32KB; 24C256. ATmega128 interfaces via I2C bus or Two-Wire Interface (TWI).

If you need to use this memeory board with VX-Mega128 board, must plug this module on top at EXPANSION connector.

5. Software in VX-Mega128 board

The related software work with VX-Mega128 microcontroller board that suggession has 4 softwares as follows :

(1) IDE development tool - introduce AVR Studio. It support both Assembly and C programming. Download the latest version at www.atmel.com

(2) C compiler - suggess WinAVR. It is powerful GCC compiler and important Free of charge. It can work with AVR Studio. User can develop C program under AVR Studio and use WinAVR to compile. Download the latest version at http:// sourceforge.net/projects/winavr

ÏриложениеП 1. ÎписàниеО а отлàдочнойа плàтыа VX-Mega128

VX-Mega128 : ATmega128 Microcontroller board documentation 7

(3) Flash programming software - suggess 2 softwares; AVR Prog and AVROSP II. The AVR Prog will install with AVR Studio. Avr-Osp II is separated. But user can add Avr-OSP II into AVR Studio for easier to using. Download the latest version at http:// esnips.com/web/AtmelAVR

(4) Boot loader - It is small firmware that program into Flash program memory of ATmega128. Its function is write the HEX code with itself via controlling from computer via serial port. Programming this code into ATmga128 must use external In-System Programmer in first time. However the manufacturer pre-program the bootloader ready.

The installation must do following these step as follows

(1)Install AVR Studio

(2)Install WinAVR compiler

(3)Install Virtual COM port (VCP) driver

(4)Install Avr-Osp II software if require

5.1AVR Studio installation

5.1.1Insert the AVR CD-ROM and look for this file in the AVR Studio directory; aStudio4b460.exe. Double-click this file.

5.1.2Enter the Installation Wizard. Click on the Next button to continue.

5.1.3 In the license agreement window, Select the box : I accept the terms of the license agreement and Click on the Next button.

ÏриложениеП 1. ÎписàниеО а отлàдочнойа плàтыа VX-Mega128

8 VX-Mega128 : ATmega128 Microcontroller board documentation

5.1.4 Choose Destination Location windows will appear. You can change the path by clicking on the Change button and setting a new path. After this, click on the

Next button.

5.1.5The Driver USB Upgrade window will now appear. Click on the Next button to pass this step.

5.1.6In the begin installation window, click on the Install button to start installation.

5.1.7 After the installation is complete, click on the Finish button to end the installation of AVR Studio.

ÏриложениеП 1. ÎписàниеО а отлàдочнойа плàтыа VX-Mega128

VX-Mega128 : ATmega128 Microcontroller board documentation 9

5.1.8 Next step is updating the software with service pack 4. Open CD-ROM . Enter to Software folder AVR Studio 4.12. Look for this file in the Update folder ; aStudio412SP4b497.exe. Double-click this file. The welcome installation windows will appear. Click the Next button to continue.

5.1.9 The Select Features window appear. Click the Next button to install the update files.

ÏриложениеП 1. ÎписàниеО а отлàдочнойа плàтыа VX-Mega128

10 VX-Mega128 : ATmega128 Microcontroller board documentation

5.1.10 The Setup Status window appear and shows the installation progress bar. Wait until finish.

5.1.11 After installation complete, click the Finish button.

<<< < Предыдущая 1 23 / 53 4 5 > Следующая >>>

Соседние файлы в предмете [НЕСОРТИРОВАННОЕ]

#
05.02.2023553.92 Кб5Отечественная история.-4.pdf
#
05.02.2023653.73 Кб20Отечественная история.-5.pdf
#
05.02.20231.5 Mб0Отечественная история.-6.pdf
#
05.02.20231.5 Mб9Отечественная история..pdf
#
05.02.20236.31 Mб9Открытая среда разработки программного обеспечения Lazarus..pdf
#
05.02.20232.84 Mб4Отладочная плата VX MEGA-128..pdf
#
05.02.2023320.87 Кб3Отражение световых пучков от плоской границы раздела «воздух – диэлектрическая среда»..pdf
#
05.02.2023893.51 Кб2Отражение световых пучков от плоской границы раздела «воздух –диэлектрическая среда»..pdf
#
05.02.2023915.84 Кб0Отраслевой бухгалтерский учет.-1.pdf
#
05.02.20231.31 Mб0Отраслевой бухгалтерский учет..pdf
#
05.02.2023460.36 Кб2Отраслевые системы менеджмента качества.-1.pdf