MC68HC705J MOTOROLA [Motorola, Inc], MC68HC705J Datasheet - Page 147

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

C.5 RC Oscillator Connections (No External Resistor)
MC68HC705J1A — Rev. 4.0
MOTOROLA
NOTE:
For maximum cost reduction, the RC oscillator mask connections shown
in
components. This can be accomplished by programming the oscillator
internal resistor (OSCRES) bit in the mask option register to a logic 1.
When programming the OSCRES bit for the MC68HSR705J1A, an
internal resistor is selected which yields typical internal oscillator
frequencies as shown in
device is different than the resistance of the selectable internal resistor
on the MC68HC705J1A and the MC68HSC705J1A devices.
This option is not available on the ROM version of this device
(MC68HC05J1A).
Figure C-2
Figure C-2. RC Oscillator Connections (No External Resistor)
EXTERNAL CONNECTIONS LEFT OPEN
allow the on-chip oscillator to be driven with no external
MCU
MC68HSR705J1A
R
Figure
RC Oscillator Connections (No External Resistor)
C-3. The internal resistance for this
C2
C1
OSC1
OSC2
V
V
DD
SS
MC68HSR705J1A
Technical Data
147