• on Test & Measurement
  • Published in issue 4/2009 on page 34
About the article

Automotive CANtroller

Car electronics exposed

Automotive CANtroller

This universal microcontroller board was designed, in the first instance, for use by students studying automotive technologies, but it can also be used for other applications, of course. The heart of this board is an Atmel AT90CAN32 with a fast RISC core.
In collaboration with the Timloto o.s. Foundation in the Netherlands, Elektor designed a special controller PCB, which will be used in schools in several countries for teaching students about automotive technologies. Particular attention was paid to issues such as universal design, cost, connection options, expandability and the availability of free development software for various platforms.

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Gerber file

CAM/CAD data for the PCB referred to in this article is available as a Gerber file. Elektor Members can exclusively download these files for free as part of their Membership. Gerber files allow a PCB to be produced on an appropriate device available locally, or through an online PCB manufacturing service. Elektor recommends its business partner Eurocircuits as the company of choice for its own prototypes and volume production in selected cases.

Extra info, Update
Technical Specifications
- Microcontroller: Atmel AT90CAN32
- Fast RISC -architecture with 133 instructions
- Clock speed: 12 MHz
- 32 KB flash, 2 KB RAM and 1 KB EEPROM available
- 53 programmable I/O lines
- Integrated CAN2.0 controller
- 8-channel 10-bit A/D converter
- SPI interface
- JTAG interface
- 2 USARTs
- Two-Wire interface
- 8 DIP switches and 8 LEDs available for experimental applications
- Power supply: 5 V @ 200 mA
R10 = 120 Ohm (SMD0805)
R2-R9,R13 = 330 Ohm (SMD0805)
R12 = 1kO (SMD0805)
R1,R11 = 10kO (SMD0805)
P1 = 10kO potentiometer (RK09K11310KB)
C1,C2,C3,C8-C11 = 100nF (SMD0805)
C4,C5 = 22pF (SMD0805)
C6 = 47µF 20V (CASE D)
C7 = 10µF 16V (CASE B)

D1 = MBRS130 (SMB)
IC1 = AT90CAN32-16AU (TQFP-64)
IC2 = PCA82C251/N4 (SO8)
IC3 = LD1117S50CTR (SOT223)
X1 = 12MHz quartz crystal
JP1,JP2 = 2-way SIL pinheader + jumper
K1,K7 = 6-way DIL pinheader
K3 = 3-way SIL pinheader + jumper
K6 = 34-way DIL pinheader
K4 = right angled 6-way SIL pinheader
K5 = DC adapter connector
K2 = right angled 9-way sub-D plug (male), PCB mount
S0-S7= one 8-way DIP switch
S8 = pushbutton
Kit of parts, contains SMD-prestuffed board and all through-hole components. Elektor Shop # 080671-91
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