
MOTOROLA
M68000 8-/16-/32-BIT MICROPROCESSORS USER'S MANUAL
3- 9
Table 3-3. Function Code Outputs
Function Code Output
FC2
FC1
FC0
Address Space Type
Low
(Undefined, Reserved)
Low
High
User Data
Low
High
Low
User Program
Low
High
(Undefined, Reserved)
High
Low
(Undefined, Reserved)
High
Low
High
Supervisor Data
High
Low
Supervisor Program
High
CPU Space
3.9 CLOCK (CLK)
The clock input is a TTL-compatible signal that is internally buffered for development of
the internal clocks needed by the processor. This clock signal is a constant frequency
square wave that requires no stretching or shaping. The clock input should not be gated
off at any time, and the clock signal must conform to minimum and maximum pulse-width
times listed in Section 10 Electrical Characteristics.
3.10 POWER SUPPLY (VCC and GND)
Power is supplied to the processor using these connections. The positive output of the
power supply is connected to the VCC pins and ground is connected to the GND pins.
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Freescale Semiconductor, Inc.
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