Datasheet

General Description
Technical Data MC68HC908GR8 — Rev 4.0
32 General Description MOTOROLA
Figure 1-4. Power Supply Bypassing
1.6.2 Oscillator Pins (OSC1 and OSC2)
The OSC1 and OSC2 pins are the connections for the on-chip oscillator
circuit. See Clock Generator Module (CGMC).
1.6.3 External Reset Pin (RST)
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 that is always activated, even when the reset pin is pulled low.
See Resets and Interrupts.
1.6.4 External Interrupt Pin (IRQ)
IRQ is an asynchronous external interrupt pin. This pin contains an
internal pullup resistor that is always activated, even when the reset pin
is pulled low. See External Interrupt (IRQ).
1.6.5 CGM Power Supply Pins (V
DDA
and V
SSA
)
V
DDA
and V
SSA
are the power supply pins for the analog portion of the
clock generator module (CGM). Decoupling of these pins should be as
per the digital supply. See Clock Generator Module (CGMC).
MCU
V
DD
C2
C1
0.1
µF
V
SS
V
DD
+
NOTE: Component values shown represent typical applications.
Frees
cale Semiconductor,
I
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
nc...