mc68hc908bd48 Freescale Semiconductor, Inc, mc68hc908bd48 Datasheet - Page 31

• Manufacturer Part Number: mc68hc908bd48
• Description: M68hc08 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

1.6 Pin Functions
MC68HC908BD48
Freescale Semiconductor
—
Rev. 2.1
Description of the pin functions are provided in
PTA7/PWM15–PTA0/PWM8
PTB7/PWM7–PTB0/PWM0
PIN NAME
HSYNC
VSYNC
OSC1
OSC2
VDD3
VSS1
VDD
VSS
RST
IRQ
General Description
Table 1-1. Pin Functions
Power supply input to the MCU.
Power supply ground.
3.3V regulated output from the MCU.
Power supply ground.
Connections to the on-chip oscillator.
An external clock can be connected directly to
OSC1; with OSC2 floating. These are 3.3V pins.
See
A logic 0 on the RST pin forces the MCU to a
known startup state. RST is bidirectional, allowing
a reset of the entire system. It is driven low when
any internal reset source is asserted. This pin
contains an internal pullup resistor.
See
(SIM).
External IRQ pin; with software programmable
internal pull-up and schmitt trigger input.
This pin is also used for mode entry selection.
See
(SIM).
Vsync input to the sync processor.
See
Hsync input to the sync processor.
See
These are shared-function pins. Each pin can be
configured as a standard I/O pin or a PWM output
channel.
See
Section 11. Pulse Width Modulator
These are shared-function pins. Each pin can be
configured as a standard I/O pin or a PWM output
channel.
See
Section 11. Pulse Width Modulator
Section 8. Oscillator
Section 7. System Integration Module
Section 7. System Integration Module
Section 16. Sync
Section 16. Sync
Section 17. Input/Output (I/O) Ports
Section 17. Input/Output (I/O) Ports
PIN DESCRIPTION
Table
Processor.
Processor.
(OSC).
1-1.
General Description
(PWM).
(PWM).
Data Sheet
and
and
31