mc9s12hz256v2 Freescale Semiconductor, Inc, mc9s12hz256v2 Datasheet - Page 44

• Manufacturer Part Number: mc9s12hz256v2
• Description: Hcs12 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Chapter 1 MC9S12HZ256 Device Overview
1.5.6.36
PV7–PV4 are general-purpose input or output pins. They can be configured as high current PWM output
pins which can be used for motor drive or to measure the back EMF to calibrate the pointer reset position.
These pins interface to the coils of motor 3.
1.5.6.37
PV3–PV0 are general-purpose input or output pins. They can be configured as high current PWM output
pins which can be used for motor drive or to measure the back EMF to calibrate the pointer reset position.
These pins interface to the coils of motor 2.
1.5.7
MC9S12HZ256 power and ground pins are described below.
1.5.7.1
V
1.5.7.2
V
and V
1.5.7.3
V
output. These pins serve as connection points for filter capacitors. V
1.5.7.4
V
converter.
44
DDR
DDX1
DD1
DDA
, V
DDX2
, V
is the power supply pin for the internal voltage regulator.
, V
SS1
SSA
DDX2
as well as V
Power Supply Pins
and V
PV[7:4] / M3C1(SIN)P, M3C1(SIN)M, M3C0(COS)P, M3C0(COS)M — Port V
I/O Pins [7:4]
PV[3:0] / M2C1(SIN)P, M2C1(SIN)M, M2C0(COS)P, M2C0(COS)M — Port V
I/O Pins [3:0]
V
V
V
V
are the power supply and ground pins for the voltage regulator and the analog-to-digital
All V
Appendix B, “PCB Layout
Because fast signal transitions place high, short-duration current demands
on the power supply, use bypass capacitors with high-frequency
characteristics and place them as close to the MCU as possible. Bypass
requirements depend on how heavily the MCU pins are loaded
No load allowed except for bypass capacitors.
DDR
DDX1
DD1
DDA
, V
SSX1
SS2
, V
, V
SS
— External Power Pin
, V
are the internal logic power and ground pins and related to the voltage regulator
SS1
SSA
pins must be connected together in the application (See
and V
SSX1
DDX2
, V
— Power Supply Pins for ATD and VREG
and V
SSX2
, V
SS2
SSX1
are the power supply and ground pins for input/output drivers.V
— Internal Logic Power Pins
SSX2
MC9S12HZ256 Data Sheet, Rev. 2.05
, V
are not internally connected.
SSX2
Guidelines”).
— External Power and Ground Pins
NOTE
NOTE
SS1
and V
SS2
(Table
are internally connected.
Freescale Semiconductor
B-1).
DDX1