John Deere has created the family of MECA (Machine Electronics Common Architecture) controllers. These controller families have several size variants with a variety of ECU designs available in each package size.

Software development support is provided by giving the OEM access to the John Deere Operating System (JDOS) suite of tools, training, and customer support.

All of these products are manufactured in an automated work cell with repeatable

quality controlled processes steps.

Designed and tested to extreme environments

Supports 12V and 24V systems

ELECTRONIC CONTROLS

Electronic Controls Specifications

Preliminary I/O Specs

Digital Inputs3 external switch inputs

1 PD, 27 kΩ2 PD, 27 kΩ with interrupt

66 external switch inputs (7 direct coupled frequency inputs possible)

7 5V, 2.21 kΩ pull up (PU)3 High Current PU to Switched Battery8 High Current pull down (PD) with wake-up2 High Current PD16 Software selectable PU/PD33 PD, software selectable current

Digital Outputs2 frequency outputs

2 each 0 to 8 kHz PWM low side drive

26 external analog inputs with 2 pole low pass filter19 PD, 100 kΩ3 1.2 kΩ PD Divide voltage by 41 PD 47 kΩ, 1 PD 50 kΩ (special filter)1 PU to switched battery 1.2 kΩ, 1 PU to 2 kΩ

Analog Inputs

15 external analog inputs with 2 pole low pass filter8 PD, 27 kΩ1 PD, 27 kΩ with wake-up6 Software selectable PU/PD (27 kΩ PU or 2 kΩ high current PD)

1 CC HSD, LSD pair 2.2 amp+/- 1.5% accuracy (dither frequency 50 to 200 Hz)

1 CC HSD, LSD pair 1.1 ampCC off state less than 1mA (dither frequency 50 to 200 Hz)

High Side DriverOutputs

6 High Side Drivers6 HSD 2.5 amp with flyback protection

27 High Side Drivers5 HSD 0.6 amp8 HSD 2.5 amp, 4 with flyback protection10 HSD 7 amp, 5 with flyback protection4 HSD 12 amp, 2 with flyback protection

Other LIN serial line interface1 ID output7 LSD, 0.5 amp

Environmental

Operating temperature -40°C to +85°CSealed to IP67Vibration and EMC tested to strict off-road requirements.Broad range of battery voltages (9-32 VDC)

Operating temperature -40°C to +85°CSealed to IP67Vibration and EMC tested to strict off-roadEMC requirements.Broad range of battery voltages (9-32 VDC)High power input connector (120A)

M50 M700