datasheet: http://cache.nxp.com/documents/data_sheet/PCA9502.pdf
description: I2C 8-bit Port Expander
footprint: agg:HVQFN24-NXP
name: PCA9502
ordercodes:
- [Farnell, '2212086']
pins:
- - - [VDD, 2, pwrin]
    - [VDD, 3, pwrin]
    - [VDD, 11, pwrin]
    - [VDD, 22, pwrin]
    - [VDD, 24, pwrin]
  - - [A0/~CS, 5, in]
    - [A1/MOSI, 6, in]
    - [MISO, 7, out]
    - [SDA, 9, oc]
    - [SCL/SCLK, 8, oc]
  - - [~IRQ, 12, oc]
  - - [I2C/~SPI, 4, in]
- - - [~RESET, 1, in]
  - - [GPIO0, 13, bidi]
    - [GPIO1, 14, bidi]
    - [GPIO2, 15, bidi]
    - [GPIO3, 16, bidi]
    - [GPIO4, 18, bidi]
    - [GPIO5, 19, bidi]
    - [GPIO6, 20, bidi]
    - [GPIO7, 21, bidi]
  - - [VSS, 10, pwrin]
    - [VSS, 17, pwrin]
    - [VSS, 23, pwrin]
    - [VSS, EP, pwrin]