OLIMEX ADuC-MT7020 User manual

ADuC-MT7020 development board
Users Manual
All boards produced by Olimex are RO S compliant
Rev. A, September 2005
Copyright(c) 2009, OLIMEX Ltd, All rights reserved
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
print
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
12pF
470nF
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
1K
1K
10K
2.2K
470
1.5 k
10K
4.7 K4.7 K
1K 100K 100K 1 0 0K
1K 330
2K
10K 10K
390/1%
240/1%
27 27
opt
opt
B 846
AD U 7 0 20
FT232BM
93L 46SN
M P13 0 T
+5V +5V
+5V
+5V
+5V
AVD D
AVD D
AVDD AVDD
LM1 1 17
AD 0
AD 0
AD 1
AD 1
AD 2
AD 2
AD 3
AD 3
AD 4
AD 4
AVDD
AVDD
BUT1
BUT1
BUT2
BUT2
DA 0
DA 0
DA 1
DA 1
DA 2
DA 2
DA 3
DA 3
DA 3
DB4 DB5 DB6 DB7
E
E
GND
GND
GND
GND
LVDD
P0.0
P0.3/TRST
P0.3/TRST
P0.6
R/W
R/W
RS
RS
RST
RST
RXD
RXD
S L
S L
SDA
SDA
T K
T K
TDI
TDI
TDO
TDO
TMS
TMS
TXD
TXD
V
VREF
VREF
1 2 3 4 5 6 7 8 9 10
11 12 13 14
AE XT
B1 B2
1
2
3
4
5
6
7 8
9
10 11 12
13 14
15
16
ONTRAST
TS
D D
DSR DTR
GND_
1 2 3 4
I2
IOVDD
12 34 56 78 910 1112 1314 1516 1718 1920
JTAG
L1
DB4
11
DB5
12
DB6
13
DB7
14
E
6
LIGHT+
15
LIGHT-
16
R/W
5
VDD
2
VO
3
VSS 1
_RS
4
P0 .6
Q1
Q2
R1
R2
R3
R4
R5
R6
R7
R8R9
R10 R11 R12 R 13
R14 R15
R16
R17 R18
R19
R20
R21 R22
R24 R25
RI
RST
RTS
RXD
SD
T1
TXD
AD 0
38
AD 1
39
AD 2
40
AD 3
1
AD 4
2
AGND
36
AVDD
37
DA 0
4
DA 1
5
DA 2
6
DA 3
7
DGND 17
GNDREF
3
IOGND 14
IOVDD 15
LVDD 16
P0.0
10
P0.3 18
P0.4 20
P0.5 21
P0.6 11
P0.7 23
P1.0
33 P1.1
32 P1.2
31
P1.3 30 P1.4 29 P1.5 28 P1.6 27 P1.7 26 P2.0 22
P4.2
34
RST 19
T K 12
TDI
9
TDO 13
TMS
8
VREF
35
X LKI 25
X LKO 24
U1
3V3OUT
6
AGND 29
AV
30
TS# 22
D D# 19 DSR# 20
DTR# 21
EE S
32
EEDATA
2EESK 1
GND1 9
GND2 17
PWR TL 14
PWREN# 15
RESET#
4RI# 18
RSTOUT#
5
RTS# 23
RXD 24
RXLED# 11 SLEEP# 10
TEST
31
TXD 25
TXDEN 16
TXLED# 12
USBDM
8
USBDP
7
V 1
3V 2
26 V IO
13
XTIN
27
XTOUT
28
U2
LK
2
S
1
DI
3DO 4
5
ORG
6
8
V
GND
U3
3
1 2
GND
VRESET
U4
1 2 3 4
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

AVAILABLE DEMO SOFTWARE
•RS232 initialization for EW-ARM
•LCD, DAC demo code for EW-ARM
•LCD write for EW-ARM
•ADC read DAC write demo code for EW-ARM
•Blink LED demo code for EW-ARM
•RS232 , UART, demo code for EW-ARM
•DAC sinusoidal eneration demo code for EW-ARM
•SPI demo code for EW-ARM
•Basic initializations for ADUC7020 demo code for EW-ARM
Page 11

ORDER CODE
ADuC-MT7020 - completely assembled and tested.
How to order?
You can order to us directly or by any of our distributors.
Check our web www.olimex.com/dev for more info.
Revision history:
REV. A - create September 2005
Page 12

Disclaimer:
© 2009 Olimex Ltd. All ri hts reserved. Olimex®, lo o and combinations thereof, are re istered trademarks of
Olimex Ltd. Other terms and product names may be trademarks of others.
The information in this document is provided in connection with Olimex products. No license, express or implied
or otherwise, to any intellectual property ri ht is ranted by this document or in connection with the sale of
Olimex products.
Neither the whole nor any part of the information contained in or the product described in this document may be
adapted or reproduced in any material from except with the prior written permission of the copyri ht holder.
The product described in this document is subject to continuous development and improvements. All particulars
of the product and its use contained in this document are iven by OLIMEX in ood faith. However all warranties
implied or expressed includin but not limited to implied warranties of merchantability or fitness for purpose are
excluded.
This document is intended only to assist the reader in the use of the product. OLIMEX Ltd. shall not be liable for
any loss or dama e arisin from the use of any information in this document or any error or omission in such
information or any incorrect use of the product.
Page 13