CMD-12DP512 AXIOM, CMD-12DP512 Datasheet - Page 9

• Manufacturer Part Number: CMD-12DP512
• Description: Single Board Computer
• Manufacturer: AXIOM

Specifications of CMD-12DP512

• Silicon Manufacturer: Freescale
• Core Architecture: HCS12
• Core Sub-architecture: S12D
• Features: Onboard Back Ground Debug, Breadboard And Prototype Area
• Kit Contents: Board
• Silicon Family Name: S12D
• Silicon Core Number: MC9S12DP512

C M D - 1 2 D P 5 1 2
SWITCHES
Push switches RESET and SW1 – 4 are provided for manual Reset of the HCS12 and for User
Application respectfully. All switches provide an active low or 0 volt output when depressed
and no connection when released.
Switch Summary
POWER Supply and Reset
DC voltage to power the board may be applied by the USB port (default), J1 Power Jack, or
externally from the TB1 term block. The PWR_SEL option determines the source. The +VIN
signal from TB1 or the J1 power jack is the input supply voltage to the board +5V voltage
regulator VR1. +VIN voltage range is +8VDC to +20VDC. When the J1 Power jack is applied
for input, the TB1 +VIN connection may be applied to source other circuits within the limits of
the wall-plug or power source current capacity or 2 Amps maximum in any case.
The VR1 +5V DC Regulator will provide 300ma total current with the board components
applying up to 100ma of this total. With +9VDC as the typical applied input voltage the user
may apply up to 200ma of the +5V safely. VR1 current capacity will be reduced due to heat
build up if input voltage is higher. Application should limit VR1 power to 3 watts.
J1 Power Jack
The J1 power jack accepts a standard 2.0 ~ 2.1mm center barrel plug connector (positive
voltage center) to provide the +VIN supply.
+Volts, 2mm center
RESET
LED1 - 4
SWITCH
R E V
B .
Manual Reset of HCS12, forces Reset signal low.
Reset Indicator will be ON while switch is depressed.
User Application switches. Refer to USER I/O
connector for details.
OPERATION
9
0 8 / 2 3 / 0 7