English
Language : 

MC68HC908GP32 Datasheet, PDF (43/410 Pages) Motorola, Inc – M68HC08 Family of 8-bit microcontroller units (MCUs)
◁
Freescale Semiconductor, Inc.
General Description
Pin Functions
1.6.5 CGM Power Supply Pins (VDDA and VSSA)
VDDA and VSSA are the power supply pins for the analog portion of the
clock generator module (CGM). Connect the VDDA pin to the same
voltage potential as VDD, and the VSSA pin to the same voltage potential
as VSS. Decoupling of these pins should be as per the digital supply. See
Section 7. Clock Generator Module (CGMC).
1.6.6 External Filter Capacitor Pin (CGMXFC)
CGMXFC is an external filter capacitor connection for the CGM. See
Section 7. Clock Generator Module (CGMC).
1.6.7 ADC Power Supply/Reference Pins (VDDAD/VREFH and VSSAD/VREFL)
VDDAD and VSSAD are the power supply pins for the analog-to-digital
converter (ADC). Connect the VDDAD pin to the same voltage potential
as VDD, and the VSSAD pin to the same voltage potential as VSS.
Decoupling of these pins should be as per the digital supply. See
Section 5. Analog-to-Digital Converter (ADC).
VREFH is the high reference supply for the ADC, and is internally
connected to VDDAD.
VREFL is the low reference supply for the ADC, and is internally
connected to VSSAD.
1.6.8 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. See Section 16. Input/Output (I/O) Ports and Section 13.
Keyboard Interrupt Module (KBI).
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.
1.6.9 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. See Section
16. Input/Output (I/O) Ports and Section 5. Analog-to-Digital
Converter (ADC).
MC68HC908GP32•MC68HC08GP32 — Rev. 6
MOTOROLA
General Description
For More Information On This Product,
Go to: www.freescale.com
Technical Data
41
 ▷