MC68HC05V12 Datasheet, PDF (201/246 Pages) Freescale Semiconductor, Inc – HCMOS Microcontreller Unit

Freescale Semiconductor, Inc.
Gauge Drivers
Gauge Power Supply
V_BATT
P6KE30A
P6KE15A
1N5822
EXTERNAL ^{+5 VOLTS +/-5%}
REGULATOR
CIRCUITRY
0.1 m
0.1 m
0.1 mF
REVERSE BATTERY
AND TRANSIENT PROTECTION
68HC705V12
0.1 mF
*100K
5%
V_DD
V_PGC
V_GSUP
~8 V
R_g1
V_DD
V_GVREF
R_g2
100 mF
LOW ESR
MTP2955
RECOMMENDED
0.1 mF
0.1 m
V_CCA
R_MAX
V_SS
V_SS
V_SSA
V_SSG
I_MAX
1%
RECOMMENDED VALUES:
Rg1 − 55 k
Rg2 − 25 k
*R = PMOS V_T(NOM)/50 x 10 –6
NOTE: PASS DEVICE AND
RELATED COMPONENTS
SHOULD BE AS PHYSICALLY
CLOSE TO THE MCU AS POSSIBLE.
MINA1
MINA2+
MINA2–
MINB1
MINB2+
MINB2–
MINC1
MINC2+
MINC2–
MIND1
MIND2+
MIND2–
MAJA1+
MAJA1–
MAJA2+
MAJA2-
MAJB1+
MAJB1–
MAJB2+
MAJB2–
MINOR GAUGE A
MINOR GAUGE B
MINOR GAUGE C
MINOR GAUGE D
MAJOR GAUGE A
MAJOR GAUGE B
Figure 15-14. Sample Gauge Connections to the MC68HC705V12
MC68HC05V12 — Rev. 2.0
Gauge Drivers
For More Information On This Product,
Go to: www.freescale.com
Technical Data