iSYSTEM, October 2003
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ITMC9S12H256 Operation
Power Supply
The external power supply must provide the voltage between 6 and 12 V DC (typical 9 V DC).
Maximum current consumption shouldn’t exceed 100 mA when 9 V DC is used. The polarity is not
important. Low voltage DC plug must conform to the DIN 45323 standards:
•
The hole diameter is 1.95 – 2.5 mm (standard: 2.1 mm)
•
The external diameter is 6.2 - 5.5 mm (standard: 5.5 mm)
Note
: The emulator must be powered on first, then the target board and vice versa when switching off
the system. First, switch off the target and then the emulator.
Jumpers
All CPU peripheral signals used on the board can be disconnected from the CPU via jumpers. By
removing the jumper, the belonging signal is freed for the user. Note that all CPU signals are available
on the expansion connectors and can be used by the user.
Jumper DESCRIPTION
J1
Enable AN0 (Analog input 0)
J2
Enable AN1 (Analog input 1)
J3
Enable PS1 (Transmit data)
J4
Enable PS0 (Receive data)
J5
Enable PE1 (IRQ push-button)
J6
Enable PH0 (LD2)
J7
Enable PH1 (LD3)
J8
Enable PH2 (LD4)
J9
Enable PH3 (LD5)
J10
Enable PH4 (LD6)
J11
Enable PH5 (LD7)
J12
Enable PH6 (LD8)
J13
Enable PH7 (LD9)
J14
Enable PE0 (SW1 push-button)
J15
Enable PM0 (SW2 push-button)
J16
Enable PE6 (MODB=0)
J17
Enable PE5 (MODA=0)
