OLIMEX ADuC-MT7020 Manual de usuario

ADuC-MT7020 development board

Users Manual

All boards produced by Olimex are RO S compliant

Rev. A, September 2005

Page 1

INTRODUCTION

ADuC-MT7020 is small terminal board with USB link for PC, two buttons,

LCD 16x2 with backli ht and ADuC7020 with the unique 1Msps ADCs/DACs

which are accessable on separate AEXT connector.

BOARD FEATURES

–MCU: ADuC7020 - ARM7TDMI Core, 16/32-bit RISC architecture, 5

Channels 12-bit, 1MSPS ADC, Differential and sin le-ended modes, 0 to

Vref Analo Input Ran e, 4 Outputs 12-bit Volta e Output DACs, On-Chip

20ppm/°C Volta e Reference, On-Chip Temperature Sensor (±3°C),

Uncommitted Volta e Comparator, JTAG Port, Clockin options: Trimmed

On-Chip Oscillator (± 2%), External Watch crystal, External clock source

45MHz PLL with Pro rammable Divider, 62k Bytes Flash/EE Memory, 8k

Bytes SRAM, In-Circuit Download, JTAG based Debu , Software tri ered

in-circuit re-pro rammability, UART, dual I2C and SPI Serial I/O, 14-Pin

GPIO Port, 2 X General Purpose Timers, Wake-up and Watchdo Timers,

Power Supply Monitor, PLA – Pro rammable Lo ic (Array), Power

Specified for 3V operation, Active Mode: 6mW (@1MHz) 300mW

(@45MHz), Fully specified for –40°C to 85°C operation;

–JTAG connector for in-circuit pro rammin and debu in with ARM-

JTAG

–USB-RS232 convertor and interface to ADuC7020, can be used for serial

download

–I2C connector

–RESET supervisor IC and button

–SERIAL DOWNLOAD (bootloader enable) button

–Two buttons

–LCD 16x2 display with BACKLIGHT

–32 768 Hz oscillator crystal

–Power supply filterin capacitor and ferite bead

–Extension header for ADC and DAC ports

–On-chip Bootloader, which can be accessed via USB usin

ARMWSD.exe. When you open ARMWSD.exe, click button Start and after

that will be appeared messa e “Press Download and pulse Reset on

hardware” - press button SD on AduC-MT7020 and pulse Reset button –

this will ive you access to Bootloader, where you can load your own

pro ram.

–PCB: FR-4, 1.5 mm (0,062"), reen soldermask, white silkscreen component

Page 2

ELECTROSTATIC WARNING

The ADuC-MT7020 board is shipped in protective anti-static packa in . The board

must not be subject to hi h electrostatic potentials. General practice for workin

with static sensitive devices should be applied when workin with this board.

BOARD USE REQUIREMENTS

Cables: Depends on the used pro rammin /debu in tool. It could be 1.8

meter USB A-B cable to connect ARM-JTAG-EW to USB host on PC or LPT cable in

case of ARM-JTAG or other pro rammin /debu in tools. You will need a serial

cable if not for pro rammin , than for confi urin the board.

ardware: Pro rammer/Debu er – some of Olimex pro rammers are

applicable, for example ARM-JTAG, ARM-JTAG-EW, or other compatible

pro rammin /debu in tool.

PROCESSOR FEATURES

ADuC-MT7020 board use fully inte rated, 1 MSPS, 12-bit data acquisition systems

incorporatin a hi h performance multichanel ADC, a 16/32-bit MCU and

Flash/EE Memory on a sin le chip with these features:

–Analo I/O

–Multi-Channel, 12-bit, 1 MSPS ADC – 5 Channels

–Differential and sin le-ended modes

– 0 to Vref Analo Input Ran e

– Multi-Channel 12-bit Volta e Output DACs - 4 Outputs

–On-Chip 20ppm/°C Volta e Reference

–On-Chip Temperature Sensor (±3°C)

–Uncommitted Volta e Comparator

–Microcontroller

–ARM7TDMI Core, 16/32-bit RISC architecture

–JTAG Port supports code download and debu

–Clockin options:

–Trimmed On-Chip Oscillator (± 2%)

–External Watch crystal

–External clock source

–45MHz PLL with Pro rammable Divider Memory

–62k Bytes Flash/EE Memory, 8k Bytes SRAM

–In-Circuit Download, JTAG based Debu

–Software tri ered in-circuit re-pro rammability

–On-Chip Peripherals

–UART, dual I2C and SPI Serial I/O

Page 3

–14-Pin GPIO Port

–2 X General Purpose Timers

–Wake-up and Watchdo Timers

–Power Supply Monitor

–PLA – Pro rammable Lo ic (Array)

–Power

–Specified for 3V operation

–Active Mode: 6mW (@1MHz)

300mW (@45MHz)

BLOCK DIAGRAM

Page 4

MEMORY MAP

Page 5

SC EMATIC

Page 6

12pF

470nF

100nF

100n

47uF/6 .3V

10uF/6 .3V

33nF

100n 100n 10u F/16V

27pF 27pF

100nF

470uF/1 6V

10K

GND

GNDA

3.3V 3.3 V

3.3V

+3.3V

3.3V

+3.3V

+3.3V +3 .3V

+3.3V

32768

6MH z

10K

2.2K

470

1.5 k

10K

4.7 K4.7 K

1K 100K 100K 1 0 0K

1K 330

10K 10K

390/1%

240/1%

opt

B 846

AD U 7 0 20

FT232BM

93L 46SN

M P13 0 T

+5V +5V

+5V

AVD D

AVDD AVDD

LM1 1 17

AD 0

AD 1

AD 2

AD 3

AD 4

AVDD

BUT1

BUT2

DA 0

DA 1

DA 2

DA 3

DB4

DB5

DB6

DB7

GND

LVDD

P0.0

P0.3/TRST

P0.6

R/W

RST

RXD

S L

SDA

T K

TDI

TDO

TMS

TXD

VREF

1 2

3 4

5 6

7 8

9 10

11 12

13 14

AE XT

B1 B2

7 8

10 11 12

13 14

ONTRAST

D D

DSR

DTR

GND_

IOVDD

910

1112

1314

1516

1718

1920

JTAG

DB4

DB5

DB6

DB7

LIGHT+

LIGHT-

R/W

VDD

VSS 1

_RS

P0 .6

R8R9

R10 R11 R12 R 13

R14 R15

R16

R17 R18

R19

R20

R21

R22

R24

R25

RST

RTS

RXD

TXD

AD 0

AD 1

AD 2

AD 3

AD 4

AGND

AVDD

DA 0

DA 1

DA 2

DA 3

DGND 17

GNDREF

IOGND 14

IOVDD 15

LVDD 16

P0.0

P0.3 18

P0.4 20

P0.5 21

P0.6 11

P0.7 23

P1.0

33 P1.1

32 P1.2

P1.3 30

P1.4 29

P1.5 28

P1.6 27

P1.7 26

P2.0 22

P4.2

RST 19

T K 12

TDI

TDO 13

TMS

VREF

X LKI 25

X LKO 24

3V3OUT

AGND 29

TS# 22

D D# 19

DSR# 20

DTR# 21

EE S

EEDATA

2EESK

GND1 9

GND2 17

PWR TL 14

PWREN# 15

RESET#

4RI# 18

RSTOUT#

RTS# 23

RXD 24

RXLED# 11

SLEEP# 10

TEST

TXD 25

TXDEN 16

TXLED# 12

USBDM

USBDP

V 1

3V 2

26 V IO

XTIN

XTOUT

3DO 4

ORG

GND

1 2

GND

VRESET

USB

ADJ/GND

IN OUT

VR1 (3.3 V)

ADu -MT7020

Rev. A

OPYRIG H T( ) 2 005

WW W.OLIMEX. OM/DEV

Array

EEPROM

USB

BOARD LAYOUT

POWER CIRCUIT

ADuC-MT7020 can take power from USB +5 V.

RESET CIRCUIT

ADuC-MT7020 reset circuit is includes R1 (1k) pull-up, U4 (MCP130T), ADuC7020

pin 19 and RST button.

CLOCK CIRCUIT

Quartz crystal 32.768 KHz is connected to ADuC7020 pin 24 (XCLKO) and pin 25

(XCLKI).

JUMPER DESCRIPTION

There are no jumpers on this board.

INPUT/OUTPUT

Page 7

Reset button with name RST, connected to ADuC7020 pin 19 (RST).

User button with name SD, connected to ADuC7020 pin 10 (P0.0).

User button with name B1, connected to ADuC7020 pin 20 (P0.4).

User button with name B2, connected to ADuC7020 pin 21 (P0.5).

LCD 16x2 display with BACKLIGHT, connected as follows: RS – to ADuC7020 pin

34 (P4.2); R/W – to ADuC7020 pin 23 (P0.7); E – to ADuC7020 pin 22 (P2.0), DB4 –

to ADuC7020 pin 29 (P1.4), DB5 – to ADuC7020 pin 28 (P1.5), DB6 – to ADuC7020

pin 27 (P1.6), DB7 to ADuC7020 pin 26 (P1.7).

Potentiometer with name Contrast for settin LCD contrast volta e.

EXTERNAL CONNECTORS DESCRIPTION

JTAG

Pin # Signal Name Pin # Signal Name

1 +3.3 V 2 +3.3 V

3 P0.3/TRST 4 GND

5 TDI 6 GND

7 TMS 8 GND

9 TCK 10 GND

11 TCK 12 GND

13 TDO 14 GND

15 Not Connected 16 GND

17 Not Connected 18 GND

19 Not Connected 20 GND

Page 8

AEXT

Pin # Signal Name Pin # Signal Name

1 AVDD 2 AVDD

3 ADC0 4 DAC0

5 ADC1 6 DAC1

7 ADC2 8 DAC2

9 ADC3 10 DAC3

11 ADC4 12 VREF

13 GND 14 GND

I2C

Pin # Signal Name

1 +3.3 V

2 SCL

3 SDA

4 GND

USB

PIN # Signal Name

1 +5V_USB

2 USBDM

3 USBDP

4 GND

Page 9

MEC ANICAL DIMENSIONS

–All measures are in Inches.

Page 10

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