MC68HC705J MOTOROLA [Motorola, Inc], MC68HC705J Datasheet - Page 30

• Manufacturer Part Number: MC68HC705J
• Description: Microcontrollers
• Manufacturer: MOTOROLA [Motorola, Inc]

General Description
1.5.2.3 RC Oscillator
1.5.2.4 External Clock
1.6 RESET
Technical Data
30
Refer to
MC68HSR705J1A.
An external clock from another complementary metal-oxide
semiconductor (CMOS)-compatible device can be connected to the
OSC1 input, with the OSC2 input not connected, as shown in
Figure
crystal/ceramic resonator or the RC oscillator is enabled.
Applying a logic 0 to the RESET pin forces the MCU to a known startup
state. An internal reset also pulls the RESET pin low. An internal resistor
to V
and V
removed from the MCU. The RESET pin contains an internal Schmitt
trigger to improve its noise immunity as an input. Refer to
Resets and Interrupts
DD
DD
pulls the RESET pin high. A steering diode between the RESET
1-8. This configuration is possible regardless of whether the
Appendix A. MC68HRC705J1A
pins discharges any RESET pin voltage when power is
Figure 1-8. External Clock Connections
General Description
for more information.
CMOS CLOCK
EXTERNAL
MCU
and
Appendix C.
MC68HC705J1A — Rev. 4.0
Section 4.
MOTOROLA