MC908GR16ACFA FREESCALE [Freescale Semiconductor, Inc], MC908GR16ACFA Datasheet - Page 25

• Manufacturer Part Number: MC908GR16ACFA
• Description: M68HC08 Microcontrollers
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

1.5.5 CGM Power Supply Pins (V
V
Decoupling of these pins should be as per the digital supply. See
(CGM).
1.5.6 External Filter Capacitor Pin (V
CGMXFC is an external filter capacitor connection for the CGM. See
(CGM).
1.5.7 ADC Power Supply/Reference Pins (V
V
are the reference voltage pins for the ADC. V
the V
V
to the same voltage potential as V
1.5.8 Port A Input/Output (I/O) Pins (PTA7/KBD7–PTA0/KBD0)
PTA7–PTA0 are general-purpose, bidirectional I/O port pins. Any or all of the port A pins can be
programmed to serve as keyboard interrupt pins. PTA7–PTA4 are only available on the 48-pin LQFP
package. See
These port pins also have selectable pullups when configured for input mode. The pullups are disengaged
when configured for output mode. The pullups are selectable on an individual port bit basis.
1.5.9 Port B I/O Pins (PTB7/AD7–PTB0/AD0)
PTB7–PTB0 are general-purpose, bidirectional I/O port pins that can also be used for analog-to-digital
converter (ADC) inputs. PTB7–PTB4 are only available on the 48-pin LQFP package. See
Input/Output (I/O) Ports
1.5.10 Port C I/O Pins (PTC6–PTC0)
PTC6 and PTC5 are general-purpose, bidirectional I/O port pins. PTC4–PTC0 are general-purpose,
bidirectional I/O port pins that contain higher current sink/source capability. PTC6–PTC2 are only
available on the 48-pin LQFP package. See
These port pins also have selectable pullups when configured for input mode. The pullups are disengaged
when configured for output mode. The pullups are selectable on an individual port bit basis.
1.5.11 Port D I/O Pins (PTD7/T2CH1–PTD0/SS)
PTD7–PTD0 are special-function, bidirectional I/O port pins. PTD3–PTD0 can be programmed to be
serial peripheral interface (SPI) pins, while PTD7–PTD4 can be individually programmed to be timer
interface module (TIM1 and TIM2) pins. PTD7 is only available on the 48-pin LQFP package. See
Chapter 18 Timer Interface Module (TIM1 and
Module, and
These port pins also have selectable pullups when configured for input mode. The pullups are disengaged
when configured for output mode. The pullups are selectable on an individual port bit basis.
Freescale Semiconductor
DDA
DDAD
REFL
DDAD
and V
is the low reference supply for the ADC, and by default the V
and V
/V
SSA
REFH
Chapter 12 Input/Output (I/O)
SSAD
Chapter 12 Input/Output (I/O) Ports
are the power supply pins for the analog portion of the clock generator module (CGM).
pin should be externally filtered and connected to the same voltage potential as V
are the power supply pins to the analog-to-digital converter (ADC). V
and
Chapter 3 Analog-to-Digital Converter
SS
MC68HC908GR16A Data Sheet, Rev. 1.0
. See
DDA
Chapter 3 Analog-to-Digital Converter
CGMXFC
Ports.
and V
REFH
Chapter 12 Input/Output (I/O)
TIM2),
is the high reference supply for the ADC, and by default
SSA
and
DDAD
)
Chapter 16 Serial Peripheral Interface (SPI)
)
Chapter 9 Keyboard Interrupt Module
/V
REFH
and V
Chapter 4 Clock Generator Module
SSAD
(ADC).
Chapter 4 Clock Generator Module
SSAD
/V
REFL
Ports.
/V
pin should be connected
REFL
(ADC).
)
REFH
Chapter 12
Pin Functions
and V
(KBI).
REFL
DD
25
.