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Pin Diagram of LPC2148

I.Pranav

1.Why in the Pin diagram of LPC2148 P0.24,26 and 27 are available to user

2. Why the pins P1.0 to P1.15 also unavailable to user

Parents
  • +1

    Maybe datasheet would help, it says:

    Port 0: Port 0 is a 32-bit I/O port with individual direction controls for
    each bit. Total of 31 pins of the Port 0 can be used as a general
    purpose bidirectional digital I/Os while P0.31 is output only pin. The
    operation of port 0 pins depends upon the pin function selected via the
    pin connect block.
    Pins P0.24, P0.26 and P0.27 are not available.

    and:

    Port 1: Port 1 is a 32-bit bidirectional I/O port with individual direction
    controls for each bit. The operation of port 1 pins depends upon the
    pin function selected via the pin connect block. Pins 0 through 15 of
    port 1 are not available.

Reply
  • +1

    Maybe datasheet would help, it says:

    Port 0: Port 0 is a 32-bit I/O port with individual direction controls for
    each bit. Total of 31 pins of the Port 0 can be used as a general
    purpose bidirectional digital I/Os while P0.31 is output only pin. The
    operation of port 0 pins depends upon the pin function selected via the
    pin connect block.
    Pins P0.24, P0.26 and P0.27 are not available.

    and:

    Port 1: Port 1 is a 32-bit bidirectional I/O port with individual direction
    controls for each bit. The operation of port 1 pins depends upon the
    pin function selected via the pin connect block. Pins 0 through 15 of
    port 1 are not available.

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