AVR-CAN development board
Users Manual
Rev.A, January 2010
Copyright(c) 2011, OLIMEX Ltd, All rights reserved
Page 1
INTRODUCTION:
AVR-CAN is inexpensive way to learn AT90CAN128 microcontroller from Atmel.
It's in very compact form 60x55mm and the presence of both CAN and RS232
allows the customer to make a bridge between UART and CAN networks. All AVR
pins are available on extension connectors and the board can be easily a snap-on
prototype or other mother board where additional circuits are built.
BOARD FEATURES:
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
MCU: AT90CAN128 – 128Kb Flash, 4Kb EEPROM, 4Kb SRAM, 52 GPIO, 32
working registers, a CAN controller, Real Time Clock, four Timer/Counters
with PWM, 2 UARTs, Two-wire Serial Interface, an 8-channel 10-bit ADC,
Watchdog Timer, SPI serial port, JTAG interface, five selectable power saving
modes
5x2 pin JTAG connector for programming and debugging with AVR-JTAG-L or
AVR-JTAG-USB
RS232 DB9 female connector and driver
CAN controller and interface
User button
Status LED
16 MHz oscillator circuit
32768 Hz oscillator circuit
Reset button and circuit
On board voltage regulator (+5V)
Power supply LED
Power supply connector
Extension pin headers for every uC pin
FR-4, 1.5 mm (0.062''), soldermask, white silkscreen component print
Dimension 60x50 mm (2.36x1.96'')
ELECTROSTATIC WARNING:
The AVR-CAN board is shipped in protective anti-static packaging. The board must
not be subject to high electrostatic potentials. General practice for working with
static sensitive devices should be applied when working with this board.
BOARD USE REQUIREMENTS:
Cables:
RS232 cable in case you want to use the RS232 and/or CAN interface.
You might need other cables depending on the
programming/debugging tool you use.
Hardware:
Programmer/Debugger – AVR-JTAG-L or AVR-JTAG-USB or other
compatible programming/debugging tool.
AVR Studio 4.13 (or later) + WinAVR (latest version) or IAR AVR.
AVR Studio and WinAVR are free to download and use. Take a note
that AVR Studio 4.13 has a bug and doesn't read the fuses correctly.
On our request to Atmel support they had confirmed the bug and
Software:
Page 2
had suggested to fix the bug by “AVR Studio 4.13 SP2 JTAGICE Fix”
available from http://www.atmel.no/beta_ware/
PROCESSOR FEATURES:
AVR-CAN board use MCU AT90CAN128 from Atmel with these features:
High-performance, Low-power AVR® 8-bit Microcontroller
Advanced RISC Architecture
- 133 Powerful Instructions – Most Single Clock Cycle Execution
- 32 x 8 General Purpose Working Registers + Peripheral Control
Registers
- Fully Static Operation
- Up to 16 MIPS Throughput at 16 MHz
- On-chip 2-cycle Multiplier
Non volatile Program and Data Memories
- 128K Bytes of In-System Reprogrammable Flash
o Endurance: 10,000 Write/Erase Cycles
- Optional Boot Code Section with Independent Lock Bits
o Selectable Boot Size: 1K Bytes, 2K Bytes, 4K Bytes or 8K Bytes
o In-System Programming by On-Chip Boot Program (CAN,
UART, ...)
o True Read-While-Write Operation
- 4K Bytes EEPROM (Endurance: 100,000 Write/Erase Cycles)
- 4K Bytes Internal SRAM (AT90CAN32/64/128)
- Up to 64K Bytes Optional External Memory Space
- Programming Lock for Software Security
JTAG (IEEE std. 1149.1 Compliant) Interface
- Boundary-scan Capabilities According to the JTAG Standard
- Programming Flash (Hardware ISP), EEPROM, Lock & Fuse Bits
- Extensive On-chip Debug Support
CAN Controller 2.0A & 2.0B - ISO 16845 Certified
- 15 Full Message Objects with Separate Identifier Tags and Masks
- Transmit, Receive, Automatic Reply and Frame Buffer Receive Modes
- 1Mbits/s Maximum Transfer Rate at 8 MHz
- Time stamping, TTC & Listening Mode (Spying or Autobaud)
Peripheral Features
- Programmable Watchdog Timer with On-chip Oscillator
- 8-bit Synchronous Timer/Counter-0
o 10-bit Prescaler
o External Event Counter
o Output Compare or 8-bit PWM Output
- 8-bit Asynchronous Timer/Counter-2
o 10-bit Prescaler
o External Event Counter
o Output Compare or 8-Bit PWM Output
o 32Khz Oscillator for RTC Operation
- Dual 16-bit Synchronous Timer/Counters-1 & 3
o 10-bit Prescaler
o Input Capture with Noise Canceler
o External Event Counter
o 3-Output Compare or 16-Bit PWM Output
Page 3
o Output Compare Modulation
8-channel, 10-bit SAR ADC
o 8 Single-ended Channels
o 7 Differential Channels
o 2 Differential Channels With Programmable Gain at 1x, 10x, or
200x
- On-chip Analog Comparator
- Byte-oriented Two-wire Serial Interface
- Dual Programmable Serial USART
- Master/Slave SPI Serial Interface
o Programming Flash (Hardware ISP)
Special Microcontroller Features
- Power-on Reset and Programmable Brown-out Detection
- Internal Calibrated RC Oscillator
- 8 External Interrupt Sources
- 5 Sleep Modes: Idle, ADC Noise Reduction, Power-save, Power-down
& Standby
- Software Selectable Clock Frequency
- Global Pull-up Disable
I/O and Packages
- 53 Programmable I/O Lines
- 64-lead TQFP and 64-lead QFN
Operating Voltages: 2.7 - 5.5V
Operating temperature: Industrial (-40°C to +85°C)
Maximum Frequency: 8 MHz at 2.7V, 16 MHz at 4.5V
-
Page 4
BLOCK DIAGRAM:
MEMORY MAP:
Page 5
Page 6
20pF
C4
Page 7
C5
AVCC
ADC0/PF0
ADC1/PF1
ADC2/PF2
ADC3/PF3
ADC4/TCK/PF4
ADC5/TMS/PF5
ADC6/TDO/PF6
ADC7/TDI/PF7
AT90CAN128
AGND
NA 1 AVREF 62
AVREF
AVREF_E
63
2
64
61
60
59
58
57
56
55
54
G ND
PG2/ALE
PG1/#RD
PG0/#WR
NC
PB7/OC0A/OC1C
PB6/OC1B
PB5/OC1A
PB4/OC2A
PB3/MISO
PB2/MOSI
PB1/SCK
PB0/#SS
43
34
33
1
17
16
15
14
13
12
11
10
35
36
37
38
39
40
41
42
51
50
49
48
47
46
45
44
EXT1-32
EXT1-33
EXT1-34
EXT2-27
EXT2-28
EXT2-29
EXT2-30
EXT2-31
EXT2-32
EXT2-33
EXT2-34
EXT2-18
EXT2-17
EXT2-16
EXT2-15
EXT2-14
EXT2-13
EXT2-12
EXT2-11
EXT1-24
EXT1-25
EXT1-26
EXT1-27
EXT1-28
EXT1-29
EXT1-30
EXT1-31
16
VCC
R1OUT
R2OUT
T1IN
T2IN
100n
+5V
AGND
VDDA
TXD1_OUT
RXD1_IN
AVREF
VIN
SCL
SDA
330
RXD0
RXD1
NA
C9
LED
IN
OUT
BUT
R2
10K
+5V
+5V
R6
2
4
6
8
10
JTAG
2 VCC
GND
http://www.olimex.com/dev
RST
RESET 1
U2 10K
MCP120-T(NA)
+5V
RESET
0
COPYRIGHT(C) 2010, OLIMEX Ltd.
Rev. A
L1
C18
1
3
5
7
9
RESET
+5V
TDI
TCK
TDO
TMS
NA
C8
R15
560
PWR_LED
+5V
ferrite_bead0805
R7
AGND
100n
+5V
C16
VDDA
C15
R9
330/1%
STAT
R1
560
+5V
+5V
R49
220/1%
R8
330/1%
ADJ/GND
AVR-CAN
560
R3
R4
4.7k
+5V
BUT
R5
4.7k
+5V
EXT2-1
EXT2-2
EXT2-3
EXT2-4
EXT2-5
EXT2-6
EXT2-7
EXT2-8
EXT2-9
EXT2-10
EXT1-1
EXT1-2
EXT1-3
EXT1-4
EXT1-5
EXT1-6
+5V
12
9 R17
11
10
TXD0
TXD1
100n
5
4 C14
3
PWR
CON2PV2-2.54MM
C41
100n
U4PWR
15GND
R1IN
R2IN
T1OUT
T2OUT
C2-
C2+
C1-
VIN
3
AGND
100nF
VDDA
CAN_D
TCK
TMS
TDO
TDI
TD1
RD1
SCL/INT0/PD0
SDA/INT1/PD1
RXD1/INT2/PD2
TXD1/INT3/PD3
ICP1/PD4
TXCAN/XCK1/PD5
RXCAN/T1/PD6
T0/PD7
PC0/A8
PC1/A9
PC2/A10
PC3/A11
PC4/A12
PC5/A13
PC6/A14
PC7/A15/CLK0
PA0/AD0
PA1/AD1
PA2/AD2
PA3/AD3
PA4/AD4
PA5/AD5
PA6/AD6
PA7/AD7
TXD1_OUT
RXD1_IN
RS232
13
8
14
7
+5V
EXT1-16
EXT1-17
EXT1-18
EXT1-19
EXT1-20
EXT1-21
EXT1-22
EXT1-23
25
26
27
28
29
30
31
32
SCL
SDA
RXD1
TXD1
LED
BUT
RXD0/PDI/PE0
TXD0/PDO/PE1
XCK0/AIN0/PE2
OC3A/AIN1/PE3
OC3B/INT4/PE4
OC3C/INT5/PE5
T3/INT6/PE6
ICP3/INT7/PE7
TOSC1/PG4
TOSC2/PG3
XTAL1
XTAL2
6
7
8
9
1
2
3
4
5
V-
V+
2
1
EXT2-26
EXT2-25
EXT2-24
EXT2-23
EXT2-22
EXT2-21
EXT2-20
EXT2-19
EXT1-15
EXT1-14
EXT1-13
EXT1-12
EXT1-11
EXT1-10
EXT1-9
EXT1-8
2
3
4
5
6
7
8
9
19
18
RXD0
TXD0
Q2
32768/6pF
1
GND
20pF
C3
24
23
100nF
C10
NC
R14
6
1 C13
220uF/25V
C17
20pF
V CC
21
52
#RESET
U1
+5V
C6
100n
C7
100n
1 TD1
2
3
4 RD1
+5V
C11
100n
C12
100n
C1+
47uF/6.3VDC
C2
20
TXD
VSS
VDD
RXD
MCP2551(SO-8)
RS
CANH
CANL
VREF
CAN_D
2
VR1(5V)
LM1117
100nF
Q1
16MHz
2
RESET
R10
120
8
7
6
5
2
CAN_D
1
U3 NA
R12
10K
NC
CAN_T
0
CAN
5
4
3
2
1
R11
0
U4
MAX232(5V)
+
EXT1-7
C1 20pF
9
8
7
6
R16
0
VIN
SCHEMATIC:
R13
53
22
BOARD LAYOUT:
POWER SUPPLY CIRCUIT:
Power should be applied to CON2PV2-2.5MM connector. AVR-CAN could be
powered by applying up to 12VDC (7 to 12 VDC) to EXT1-1 and EXT1-2 and GND
to EXT1-3 and EXT1-4 or if you supply 7 to 12 VDC to CON2PV2-2.5MM pin 2
(VIN) and GND to CON2PV2-2.5MM pin 1 .
The consumption of AVR-CAN is about 40-50 mA.
RESET CIRCUIT:
AVR-CAN reset circuit is made with R6 (10k) pull-up and button RST. On the
board there is a place for the voltage supervisory device MCP120-T, but we sell it
without MCP120-T.
Page 8
CLOCK CIRCUIT:
Quartz crystal 16 MHz is connected to AT90CAN128 pin 24 (XTAL1) and pin 23
(XTAL2).
Quartz crystal 32.768 kHz is connected to AT90CAN128 pin 19 (TOSC1/PG4) and
pin 18 (TOSC2/PG3) and supplies the internal Asynchronous Timer/Counter
(Timer/Counter2 in asynchronous operation).
JUMPER DESCRIPTION:
CAN_D
CAN Disable. If this
Default state is open.
CAN_T
jumper is closed, the CAN is disabled.
This jumper assures correct work of the CAN. At each end of the bus
it should be closed. This means that if you have only two devices
with CAN, the jumpers of both devices should be closed. If you have
more than two devices, only the two end-devices should be closed.
Default state is closed.
AVREF_E
This jumper when closed supplies VDDA reference to the AVREF. If
this jumper is open the desired reference voltage should be applied at
EXT2-3.
Default state is open.
INPUT/OUTPUT:
Status LED (red) with name STAT connected to AT90CAN128 pin 6
(OC3B/INT4/PE4).
Power-on LED (red) with name PWR_LED – this LED shows that +5V is applied to
the board.
User button with name BUT connected to AT90CAN128 pin 7 (OC3C/INT5/PE5).
Reset button with name RST connected to AT90CAN128 pin 20 (#RESET).
Page 9
EXTERNAL CONNECTORS DESCRIPTION:
JTAG:
Pin #
TDI
TDO
the
TMS
TCK
Signal Name
1
TCK
2
GND
3
TDO
4
+5V
5
TMS
6
RESET
7
+5V
8
NC
9
TDI
10
GND
Input Test Data In. This is the serial data input for the shift register.
Output Test Data Out. This is the serial data output for the shift register. Data is shifted out of
device on the negative edge of the TCK signal.
Input Test Mode Select. The TMS pin selects the next state in the TAP state machine.
Input Test Clock. This allows shifting of the data in, on the TMS and TDI pins. It is a
positive edge triggered clock with the TMS and TCK signals that define the internal
state of the device.
JTAG is used to to program and debug the MCU.
PWR:
Pin #
Signal Name
1
GND
2
VIN
VIN (Voltage In) – you should supply +7 to + 12 VDC.
RS232:
Page 10
Pin #
Signal Name
1
NC
2
TXD0
3
RXD0
4
NC (not connected
through R14 to pin 6)
5
GND
6
NC (not connected
through R14 to pin 4)
7
NC (not connected
through R13 to pin 8)
8
NC (not connected
through R13 to pin 7)
9
NC
TXD0 Output Transmit Data. This is the asynchronous serial data output (RS232) for the shift
register on the UART controller.
RXD0 Input Receive Data. This is the asynchronous serial data input (RS232) for the shift register
on the UART controller.
Page 11
CAN:
Pin #
Signal Name
1
NC
2
CANL
3
GND
4
NC
5
NC
6
GND
7
CANH
8
NC
9
VIN
CANL and CANH are either deferential input, or differential output depending on
the function of the MCP2551 CAN controller (receiving or transmitting data).
Page 12
EXT1:
Pin #
Signal Name
Pin #
Signal Name
1
VIN
2
VIN
3
GND
4
GND
5
+5V
6
+5V
7
-
8
ICP3/INT7/PE7
9
T3/INT6/PE6
10
OC3C/INT5/PE5
11
OC3B/INT4/PE4
12
OC3A/AIN1/PE3
13
XCK0/AIN0/PE2
14
TXD0/PDO/PE1
15
RXD0/PDI/PE0
16
ADC0/PF0
17
ADC1/PF1
18
ADC2/PF2
19
ADC3/PF3
20
ADC4/TCK/PF4
21
ADC5/TMS/PF5
22
ADC6/TDO/PF6
23
ADC7/TDI/PF7
24
PA0/AD0
25
PA1/AD1
26
PA2/AD2
27
PA3/AD3
28
PA4/AD4
29
PA5/AD5
30
PA6/AD6
31
PA7/AD7
32
PG2/ALE
33
PG1/#RD
34
PG0/#WR
EXT2:
Page 13
Pin #
Signal Name
Pin #
Signal Name
1
VDDA
2
VDDA
3
AVREF
4
AGND
5
AGND
6
+5V
7
GND
8
GND
9
TXD1_OUT
10
RXD1_IN
11
PC7/A15/CLK0
12
PC6/A14
13
PC5/A13
14
PC4/A12
15
PC3/A11
16
PC2/A10
17
PC1/A9
18
PC0/A8
19
T0/PD7
20
RXCAN/T1/PD6
21
TXCAN/XCK1/P5
22
ICP1/PD4
23
TXD1/INT3/PD3
24
RXD1/INT2/PD2
25
SDA/INT1/PD1
26
SCL/INT0/PD0
27
PB7/OC0A/OC1C
28
PB6/OC1B
29
PB5/OC1A
30
PB4/OC2A
31
PB3/MISO
32
PB2/MOSI
33
PB1/SCK
34
PB0/#SS
Page 14
MECHANICAL DIMENSIONS:
Page 15
AVAILABLE DEMO SOFTWARE:
You could download AVR-CAN software form
www.olimex.com/dev :
AVR-CAN Blinking LED demo code (C source and HEX)
AVR-CAN Button read demo code (C source and HEX)
AVR-CAN RS232 demo code (C source and HEX)
ORDER CODE:
AVR-CAN – assembled and tested (no kit, no soldering required)
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.
All boards produced by Olimex are RoHS compliant
Revision history:
Board - REV.A
Users Manual – Rev. A
- created
- created
January 2010
February 2011
–
added latest revision of the scheme
–
changed supply voltage
–
add page numbers
–
added more detailed mechanical dimensions
Page 16
Disclaimer:
© 2011 Olimex Ltd. All rights reserved. Olimex®, logo and combinations thereof, are registered
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 right is granted 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 copyright 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 given by OLIMEX in good faith.
However all warranties implied or expressed including 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 damage arising 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 17
工商网监
湘ICP备2023018690号
