MC68HC05V12 Datasheet, PDF (34/246 Pages) Freescale Semiconductor, Inc – HCMOS Microcontreller Unit

Freescale Semiconductor, Inc.
General Description
1.6.19 MINA(B,C,D)1, MINA(B,C,D)2+, and MINA(B,C,D)2−
MINA(B,C,D)2+ and MINA(B,C,D)2− are the full H-bridge driver pins
used with or for the minor gauges. These pins allow the coil current to be
reversed for movement of gauge pointer from 0 to 180 degrees.
MINA(B,C,D)1 is the low-side driver pin used with the minor gauges. The
current flow through the coil is restricted to one direction. Refer to
15.3 Gauge System Overview for more details on the operation of
these pins.
1.7 Power Supply Pin Connections
Refer to Figure 1-4 for a supply decoupling diagram.
SINGLE POINT
GROUND
V_DD
0.1 µF
DIGITAL CIRCUIT SUPPLY
V_SSD
V_SSA
0.1 µF
**
V_CCA
DIGITAL CIRCUIT GROUND
ANALOG
GROUND
A/D CONVERTER
ANALOG
SUPPLY
DIGITAL
MODULES
V_DD
0.1 µF
V_SSD
GAUGE REGISTER
V_PGC*
V_SSG
GAUGE DRIVERS
0.1 µF
* Refer to Section 15. Gauge Drivers for decoupling recommendations.
**Optional supply isolation circuit
Figure 1-4. Supply Decoupling Diagram
V_GSUP*
Technical Data
General Description
For More Information On This Product,
Go to: www.freescale.com
MC68HC05V12 — Rev. 2.0