mc68hc908mr8 Freescale Semiconductor, Inc, mc68hc908mr8 Datasheet - Page 34

• Manufacturer Part Number: mc68hc908mr8
• Description: M68hc08 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

General Description
1.5.1 Power Supply Pins (V
1.5.2 Oscillator Pins (OSC1 and OSC2)
1.5.3 External Reset Pin (RST)
Technical Data
34
V
from a single power supply.
Fast signal transitions on MCU pins place high, short-duration current
demands on the power supply. To prevent noise problems, take special
care to provide power supply bypassing at the MCU as
shows. Place the C1 bypass capacitor as close to the MCU as possible.
Use a high-frequency-response ceramic capacitor for C1. C2 is an
optional bulk current bypass capacitor for use in applications that require
the port pins to source high current levels.
The OSC1 and OSC2 pins are the connections for the on-chip oscillator
circuit. 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. See
Integration Module
DD
and V
DD
and V
SS
Section 8. Clock Generator Module
Note: Component values shown represent typical applications.
are the power supply and ground pins. The MCU operates
SS
General Description
Figure 1-3. Power Supply Bypassing
)
(SIM).
V
DD
V
DD
0.1 µF
+
MCU
C1
C2
Section 7. System
MC68HC908MR8 — Rev 4.1
V
SS
(CGM).
Freescale Semiconductor
Figure 1-3