M 6 8 E V B 9 1 2 C 3 2
0 5 / 1 5 / 0 3
7
MONITOR MEMORY MAP:
0x0000 -
0x03FF
9S12C32 Register Space.
See the 9S12C32 User Manual for details
0x0400 -
0x37FF
Not applied on the EVB
0x3800 -
0x3FFF
9S12C32 Ram space, user application ram
Initial Monitor stack = 0x3FFF (reserve 50 bytes)
0x4000 -
0x7FFF
Not applied on the EVB
0x8000 -
0xF77F
User Application Flash Memory
0xF780 -
0xF7FF
User Interrupt Vectors
0xF800 -
0xFFFF
Monitor Flash Memory Space (
Protected
)
M68EVB912C32 Board Operation
The M68EVB912C32 board provides input and output features to assist in application
development. These features may be isolated from the applied HCS12 I/O ports by the option
jumpers. This allows alternate use of the HCS12 I/O ports for other application and connection
on the I/O port connectors. Caution should be observed so that the HCS12 I/O port pin
applied to an on board feature is not also applied to external components by the user.
POWER SUPPLY
Input power is applied by external connection to the J1 power jack or TB1 power access term
block. ON_OFF switch operation will enable the +VIN power source from either connection.
+VIN is polarity protected by D3 and current limited by FZ1. VR1 provides the main regulated
+5V supply and VR2 provides a regulated 2.5V core interface supply applied by the X1 clock
oscillator buffer circuits.
ON_OFF Switch
The ON_OFF slide switch provides board power on and off control. With the switch in the ON
poVIN is applied to the regulator circuits. With +VIN applied and ON_OFF in the ON
position, the POWER indicator should be ON.
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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