GenBoard/Manual/Wiring/ManifoldAbsolutePressure (2006-07-10 16:40:00)

MAP-sensors

Important: check GenBoard/Manual/Wiring/ManifoldAbsolutePressureExternal for the pinout of packaged external sensor (though 5V packaged is pin-compatible with the bare sensor).

MAPdongles_and_bare_s.jpg

The "bare" version (top-left of the above picture) is ment to be mounted in the ECM case:

The adapter is designed to carry the 400kPa MPXH6400 sensor. Motorola packages this nice sensor in SMD only, so a PCB was necessary for a clean install. Output is compatible with the more common MPX4250AP sensor, but features 400kPa range instead of 250kPa. Recommended for > 130kPa (1.3bar, 18psi) boost.

there are some simple extras onboard, like


Mounting the 5V "bare" version

The "bare"-board is ment to be mounted vertically in the Alubos case, perpendicular to v3.x

MAP_400kPa_mounting_m.jpg

The image is taken before hotmelt is applied (at the connection of the boards and the sensor nipple).

When mounting onboard GenBoard/VerThree, for mechanical stiffness:


Internal "bare" version is only practical with 5V supply, to match the supply provided by the GenBoard/VerThree header. It's possible to order the "bare" board with 12V supply, for other applications, if you really know what you are doing.

Pinout of the 5V, 400kPa version: "bare" or packaged

pin nr. signal range note
1 MAP output 0 .. 4.8V 20..400kPa
2 GND 0V  
3 5V in 5V max 10mA
4 temp out 0.5 .. 4.5V only for the 400kPa version; NTC U(T) curve: similar to coolant sensors, 2.5V at +25C
5 GND internal 0V  

The bare, internal version also has a 6th, not connected pin (so it mounts nicely on the 6 pads of MPX4250AP).


Pinout of the 12V supply, 400kPa bare version - you likely don't need this type. Either buy packaged, or buy the bare with 5V supply.

'''Important: while the 12V supply is a nice option for the external GenBoard/Manual/Wiring/ManifoldAbsolutePressureExternal, for the internal the 5V is what you likely need when used inside the v3.x case. The 12V is only for special applications, not suitable for direct mounting on GenBoard/VerThree.

Note that populated this way, the supply has a wide range, and the 5V is output, not input. Applying 5V to the 5V output is not supported, it might damage the unit.

pin nr. signal range note
1 MAP output 0 .. 4.8V 20..400kPa
2 GND 0V  
3 5V out 5V max 80mA. Useful for HALL, TPS, etc...
4 temp out 0.5 .. 4.5V NTC, similar U(T) as CLT
5 GND internal 0V  
6 +12V in 6.3 .. 16V  

See also