mc68hc908lb8 Freescale Semiconductor, Inc, mc68hc908lb8 Datasheet - Page 127

• Manufacturer Part Number: mc68hc908lb8
• Description: M68hc08 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

Freescale Semiconductor
FROM SIM
MCU
FROM SIM
SIMOSCEN
SIMOSCEN
MCU
V
DD
Figure 13-2. XTAL Oscillator External Connections
Figure 13-3. RC Oscillator External Connections
OSC1
EN
R
EXT
EXTERNAL RC
OSC1
OSCILLATOR
C
1
MC68HC908LB8 Data Sheet, Rev. 1
R
X
B
1
INTCLK
XTALCLK
RCCLK
PTC1/BUSCLKX4 (OSC2)
BUSCLKX4
See
for component value requirements.
OSC2
R
C
S
(1)
2
Chapter 20 Electrical Specifications
TO SIM
0
1
Note 1:
R
frequency crystals. Refer to manufacturer’s
data. See
Specifications
requirements.
S
1
0
can be zero (shorted) when used with higher
BUSCLKX2
÷ 2
OSCRCOPT
Chapter 20 Electrical
TO SIM
TO SIM
PTC1
for component value
BUSCLKX4
I/O
÷ 2
TO SIM
BUSCLKX2
PTC1
OSC2EN
Functional Description
127