DEMO9S12PFAME User's Manual
2 Hardware Features
2.1 Demonstration Board Features
The DEMO9S12PFAME board features:
A MC9S12P128 microcontroller (in 80-Pin QFP package, already programmed with a
demo application);
A 4 MHz crystal;
A 12 V DC power supply input connector;
Power input selection jumper for selecting the input voltage source:
o
12 V DC input connector;
o
USB connector.
A built-in USB-to-BDM circuitry which allows the host PC to communicate with the
microcontroller through a standard USB interface. USB 2.0 is fully supported. When
using an external in-circuit debugger (via the “BDM” connector), the USB-to-BDM
circuitry must be bypassed by removing the BKGD and RESET# jumpers.
A Reset push-button connected to the MCU Reset pin.
A series of inputs:
o
Two push-buttons, together with jumpers to connect/disconnect them to/from the
microcontroller;
o
Four DIP-switches, together with jumpers to connect/disconnect them to/from the
microcontroller;
o
A potentiometer, together with a jumper to connect/disconnect it to/from the
microcontroller;
o
A photocell, together with a jumper to connect/disconnect it to/from the
microcontroller.
Four high-efficiency (low-current) LEDs together with jumpers to connect/disconnect
them to/from the microcontroller;
An RS-232 channel connected to the microcontroller’s SCI serial communication
interface, together with a jumper to select the RS-232 or LIN functionality (see point
below);
Two LIN connectors sharing one LIN transceiver, together with jumpers for
configuration;
One CAN connector with high-speed CAN transceiver, together with jumpers for
configuration.
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