PICAXE I/O Current Capability

[hippy]

This list details the current handling capabilities of PICAXE chips. Data is taken from the Microchip datasheets - These may be subject to change or re-rating and figures here are not guaranteed to be correct so always check the latest datasheets before use. E&OE.

Current "sourced through chip" is the current into VDD (+V), current "sunk through chip" is the current out of VSS (0V).

These are absolute maximum ratings at -40°C to +85°C and may need to be derated at more extreme dempeartures. Stresses above those listed may cause permanent damage to the device. Exposure to maximum rating conditions for extended periods may affect device reliability. Please see the Microchip datasheet for full and further details on absolute maximum ratings.


PICAXE-08 ( 12F629 )

Sourced through chip : 250mA
Sunk through chip : 300mA
Sourced or sunk per port : 125mA
Sourced or sunk per pin : 25mA


PICAXE-08M ( 12F683 )

Sourced or sunk through chip : 95mA
Sourced or sunk per port : 90mA
Sourced or sunk per pin : 25mA


PICAXE-08M2 / PICAXE-08M2LE

These are stated to be preliminary ratings by Microchip at the time this table was compiled

Sourced through chip : 80mA
Sunk through chip : 85mA
Sourced or sunk per pin : 25mA


PICAXE-14M ( 16F684 )

Sourced or sunk through chip : 95mA
Sourced or sunk per port : 90mA
Sourced or sunk per pin : 25mA


PICAXE-14M2

These are stated to be preliminary ratings by Microchip at the time this table was compiled

Sourced through chip : 80mA
Sunk through chip : 85mA
Sourced or sunk per pin : 25mA


PICAXE-18 ( 16F627 )

Sourced through chip : 250mA
Sunk through chip : 300mA
Sourced or sunk through all ports combined : 200mA
Sourced or sunk per pin : 25mA


PICAXE-18A ( 16F819 )

Sourced or sunk through chip : 200mA
Sourced or sunk per port : 100mA
Sourced or sunk per pin : 25mA


PICAXE-18M ( 16F819 )

Sourced or sunk through chip : 200mA
Sourced or sunk per port : 100mA
Sourced or sunk per pin : 25mA


PICAXE-18M2

These are stated to be preliminary ratings by Microchip at the time this table was compiled

Sourced through chip : 70mA
Sunk through chip : 95mA
Sourced through all ports combined : 140mA
Sunk through all ports combined : 200mA
Sourced or sunk per pin : 25mA


PICAXE-18X ( 16F88 )

Sourced or sunk through chip : 200mA
Sourced or sunk per port : 100mA
Sourced or sunk per pin : 25mA


PICAXE-20M ( 16F677 )

Sourced through chip : 250mA
Sunk through chip : 300mA
Sourced or sunk through all ports combined : 200mA
Sourced or sunk per pin : 25mA


PICAXE-20M2

These are stated to be preliminary ratings by Microchip at the time this table was compiled

Sourced through chip : 80mA
Sunk through chip : 85mA
Sourced or sunk per pin : 25mA


PICAXE-20X2 ( 18F14K22 )

These are stated to be preliminary ratings by Microchip at the time this table was compiled. Please see the latest datasheet for further details

Sourced or sunk through chip : 95mA
Sourced or sunk per port : 90mA
Sourced or sunk per pin : 25mA


PICAXE-28 ( 16F872 )

Sourced through chip : 250mA
Sunk through chip : 300mA
Sourced or sunk through port A and B : 200mA
Sourced or sunk through port C : 200mA
Sourced or sunk per pin : 25mA


PICAXE-28A ( 16F872 )

Sourced through chip : 250mA
Sunk through chip : 300mA
Sourced or sunk through port A and B : 200mA
Sourced or sunk through port C : 200mA
Sourced or sunk per pin : 25mA


PICAXE-28X ( 16F873A )

Sourced through chip : 250mA
Sunk through chip : 300mA
Sourced or sunk through port A and B : 200mA
Sourced or sunk through port C : 200mA
Sourced or sunk per pin : 25mA


PICAXE-28X1 ( 16F886 )

Sourced or sunk through chip : 95mA
Sourced or sunk per port : 90mA
Sourced or sunk per pin : 25mA


PICAXE-28X2 ( 18F25K22 )

Sourced through chip : 200mA
Sunk through chip : 300mA
Sourced for all ports combined : 185mA
Sunk for all ports combined : 200mA
Sourced or sunk per pin : 25mA


PICAXE-28X2-5V ( 18F2520 )

Sourced through chip : 250mA
Sunk through chip : 300mA
Sourced or sunk through all ports combined : 200mA
Sourced or sunk per pin : 25mA


PICAXE-28X2-3V ( 18F25K20 )

Sourced through chip : 250mA
Sunk through chip : 300mA
Sourced or sunk through all ports combined : 200mA
Sourced or sunk per pin : 25mA


PICAXE-40X ( 16F874A )

Sourced through chip : 250mA
Sunk through chip : 300mA
Sourced or sunk through port A, B and E : 200mA
Sourced or sunk through port C and D : 200mA
Sourced or sunk per pin : 25mA


PICAXE-40X1 ( 16F887 )

Sourced or sunk through chip : 95mA
Sourced or sunk per port : 90mA
Sourced or sunk per pin : 25mA


PICAXE-40X2 ( 18F45K22 )

Sourced through chip : 200mA
Sunk through chip : 300mA
Sourced for all ports combined : 185mA
Sunk for all ports combined : 200mA
Sourced or sunk per pin : 25mA


PICAXE-40X2-5V ( 18F2540 )

Sourced through chip : 250mA
Sunk through chip : 300mA
Sourced or sunk through all ports combined : 200mA
Sourced or sunk per pin : 25mA


PICAXE-40X2-3V ( 18F25K40 )

Sourced through chip : 250mA
Sunk through chip : 300mA
Sourced or sunk through all ports combined : 200mA
Sourced or sunk per pin : 25mA


Total Current Capability Summary

Current capability of 200mA and above - 08, 20M, 18, 18A, 18M, 18X, 28, 28A, 28X, 28X2, 28X2-5V, 28X2-3V, 40X, 40X2, 40X2-5V, 40X2-3V

Current capability below 100mA - 08M, -8M2, 08M2LE, 14M, 14M2, 18M2, 20M2, 20X2, 28X1, 40X1

[BeanieBots]

Another valueable set of data which really begs for a "FAQ Technical" section.

Not sure "User Projects Communication" is the ideal spot:confused:

[hippy]

It seemed to be the best place to put it for the time being, alongside the I/O pin info - at least I'll remember where it is !

The most appropriate ways and places to present information is something that will be on our agenda.

[John West]

I found it - but only via a Google search. Whatever works.

[Dippy]

These data should really be neatly tabulated and Appended to the Manual.
It is imporant info and really needs to be thrust upon the User without the need to climb Mount Everest to find. It needs to be done neatly and concisely, so that's me and Hippy out of the frame.

Another little table that needs doing is one to summarise Supply V, I/O volt levels, and Input V thresholds.

CALLING ALL PUNTERS: Please refrain from adding to this thread. This thread needs to stay as a One Page for easy access. Link to it by all means.