Shop OBEX P1 Docs P2 Docs Learn Events
BS2 I/O pins sink and source current — Parallax Forums

BS2 I/O pins sink and source current

JerrydJerryd Posts: 4
edited 2009-01-22 18:04 in BASIC Stamp
Can someone tell me how much current the I/O pins of a BS2 will sink or source
and are they tri-state?
I looked on the internet for a data sheet but couldn't find it.

Thanks
Jerryd

Comments

  • ercoerco Posts: 20,259
    edited 2009-01-22 01:18
    from http://www.parallax.com/tabid/385/Default.aspx

    How much current can the I/O pins handle?
    On the BASIC Stamp 1 module and BASIC Stamp 2 module, each I/O pin is capable of sourcing 20mA and sinking 25mA. The total across each group of 8 I/O pins should not exceed 40mA source or 50mA sink. On the BS2e, BS2sx, BS2p24, BS2p40, BS2pe and BS2px24, each I/O pin is capable of sourcing and sinking 30mA. The total current draw across each group of 8 I/O pins should not exceed 60mA.

    ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
    ·"If you build it, they will come."

    Post Edited (erco) : 1/22/2009 1:26:58 AM GMT
  • Carl HayesCarl Hayes Posts: 841
    edited 2009-01-22 18:04
    To Erco's excellent response I will add that -- yes -- Stamp pins are tri-state.

    ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
    · -- Carl, nn5i@arrl.net
Sign In or Register to comment.