MC68HC08XL36 Datasheet, PDF (17/362 Pages) Freescale Semiconductor, Inc – HCMOS Microcontroller Unit

Freescale Semiconductor, Inc.
Introduction
Pin Functions
Pin Functions
Power Supply Pins
(V_DD and V_SS)
V_DD and V_SS are the power supply and ground pins. The MCU operates
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 Figure 4 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.
MCU
V_DD
V_SS
C1
0.1 µF
+
C2
V_DD
NOTE: Component values shown
represent typical applications.
Figure 4. Power Supply Bypassing
Oscillator Pins
The OSC1 and OSC2 pins are the connections for the on-chip oscillator
(OSC1 and OSC2) circuit. (See Clock Generator Module (CGM) on page 81.)
7-intro_a
MOTOROLA
Introduction
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MC68HC08XL36
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