Freescale-Tower-System-Prototyping-Module-Freescale-TWR-PROTO-The-Tower-System-prototyping-module-provides-access-to-all-signals-on-primary-&-secondary-elevator-connectors-for-prototyping-&-signal-probing-an-area-for-adding-custom-circuitry-to-the-Tower-System-&-multiple-5-V-3-3-V-&-GND-connections-Freescale-TWR-PROTO-Tower-System-Prototyping-Module