amp e MS3Pro ULTIMATE - 3 Ms3 Pro Hardware; Overview

To Next Page

To Previous Page

3 MS3PRO HARDWARE

3 MS3Pro hardware

3.1 Overview

The MS3Pro Ultimate is a full standalone ECU with everything you need to run sequential fuel injection on up to

12 cylinders. This ECU is based on the previous MegaSquirt-III design and runs similar code, but we’ve upgraded

the feature set, and put it in a waterproof enclosure with high current, vibration resistant AMPSEAL connectors.

Here are the MS3Pro Ultimate’s speciﬁcations.

Hardware features:

• Freescale MC9S12X 16 bit, 50 MHz asymmetrical dual core processor

• 10 peak and hold injector drivers with software selectable peak current

• 8 logic level ignition outputs

• 3 high current (5 amp) general purpose outputs - 2 can be reconﬁgured as additional injector drivers

• 5 medium current (3 amp), high frequency general purpose outputs - 2 can be reconﬁgured as additional

spark outputs

• 2 medium current (3 amp), low frequency general purpose outputs

• 1 stepper H-bridge driver

• 4 VR sensing differential inputs - supports VR, Hall effect, and optical input

• Optoisolated input for RPM input from negative terminal of an ignition coil

• 12 volt tach output

• Fuel pump output

• Onboard 4 bar MAP and 1 bar barometric pressure sensors

• 13 analog inputs (5 dedicated sensor inputs, 8 general purpose)

• 11 general purpose on/off or low frequency inputs

• 3 general purpose frequency inputs

• 2 DSP based knock inputs

• RS232, USB 2.0, and CAN communication

• Onboard SD card for internal data logging

• Internal ECU temperature sensor

• Real time clock

• Keep alive power

• Temperature range: -30 to +80 degrees C (-40 to +85 without battery for real time clock)

• Minimum supply voltage: 6.0 volts

• Maximum supply voltage: 18.0 volts before triggering overvoltage protection circuits

Software features:

• Supports speed density, alpha-N, or MAF based fuel and spark tables with option to blend between any two

load types

• 1 microsecond injector pulse width resolution

• Tables for nonlinear injector behavior at small pulse widths

AMP EFI MS3ProUltimate manual version 1.203, ﬁrmware 1.5.0, 5/23/2017 Page 23