Motorola Freescale Semiconductor, Inc 10.3.2 MC68340V 3.3, Typical Electrical Characteristics

Freescale Semiconductor, Inc...

Freescale Semiconductor, Inc.

10.3.2 MC68340V (3.3 V)

The MC68340V can operate with a 3.3-V power supply for significant power savings. The formula for power dissipation is

Pd ≈ V2 ⋅ f + dc

Table 10-2 shows typical electrical characteristics for both the MC68340 and MC68340V.

Table 10-2. Typical Electrical Characteristics

Parameter	MC68340 (5.0 V)	MC68340V (3.3 V)
Clock Frequency	0–16.78 MHz	0–8.39 MHz
	0–25 MHz	0–16.78 MHz
Typical Current (16 MHz)	95 mA	TBD
Typical Current (8 MHz)	55 mA	30 mA
Standby Current	60 ∝A	25 ∝A

Running at 3.3 V saves 66% of the power consumption.

The 3.3 V operation provides the following user advantages:

Advantage	Benefit
Lower Supply Voltage	Fewer Batteries
Fewer Batteries	Less Weight
	Smaller Size
Lower Current Drain	Extended Battery Life
Less Heat Generated	No Fan
	No Fan Noise
Less EMF Radiation	Easier FCC Certification
	Less Crosstalk
	Closer PCB Traces
High Functional Integration	All-In-One 3.3 V Part:
	Processor
	Peripherals
	Glue Logic

These advantages result in a much more portable system.

MOTOROLAMC68340 USER’S MANUAL10-13

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