The MC9S12A512 Processor
Block diagram schematic of the Freescale 9S12 (Motorola HCS12) processor
The MC9S12A512 used in the PDQ Board and PDQ Screen differs from the MC9S12DP512 shown above only in that it lacks the CAN0-CAN4 ports. For a brief description of the microcontroller's capabilities, see Overview of the MC9S12A512 microcontroller.
The C-language-programmable PDQ Board™ is a single board computer (SBC) based on the Freescale 9S12 (HCS12) microcontroller. It is ideal for implementing instrument control and automation functions.
See also → The MC9S12A512 Processor