mc68hc705v12 Freescale Semiconductor, Inc, mc68hc705v12 Datasheet - Page 207

• Manufacturer Part Number: mc68hc705v12
• Description: M68hc05-based Mcu Hc05 Freescale Semiconductor
• Manufacturer: Freescale Semiconductor, Inc

15.12 External Component Considerations
MC68HC705V12
—
Rev. 3.0
To determine the values and tolerances of the external components
required to drive the air core gauge coils, the minimum V
the V12 pin, and the power dissipation should be considered.
Figure 15-15
coming in through the external devices the internal devices and into
V
SSG
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.
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shows the components in the path between the +12 V
Figure 15-15. Coil Driver Current Path
Gauge Drivers
PIN ON PACKAGE
GAUGE COILS
External Component Considerations
+12 V
R
L
R
Coil
V
+
+
Coil
V
I
COIL DRIVER PAD
SSG
V
V
GSUP
COIL DRIVER PAD
Diode
Pass
PAD
Advance Information
BATT
Gauge Drivers
voltage, at