s908qc16vdse Freescale Semiconductor, Inc, s908qc16vdse Datasheet - Page 102

• Manufacturer Part Number: s908qc16vdse
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Oscillator Mode (OSC)
10.4 Interrupts
There are no interrupts associated with the OSC module.
10.5 Low-Power Modes
The WAIT and STOP instructions put the MCU in low power-consumption standby modes.
10.5.1 Wait Mode
The OSC module remains active in wait mode.
10.5.2 Stop Mode
The OSC module can be configured to remain active in stop mode by setting OSCENINSTOP located in
a configuration register.
10.6 OSC During Break Interrupts
There are no status flags associated with the OSC module.
The system integration module (SIM) controls whether status bits in other modules can be cleared during
the break state. The BCFE bit in the break flag control register (BFCR) enables software to clear status
bits during the break state. See BFCR in the SIM section of this data
To allow software to clear status bits during a break interrupt, write a 1 to BCFE. If a status bit is cleared
during the break state, it remains cleared when the MCU exits the break state.
102
MCU
MC68HC908QC16 • MC68HC908QC8 • MC68HC908QC4 Data Sheet, Rev. 4
SIMOSCEN (internal signal) OR
OSCENINSTOP (bit located in
configuration register))
V
DD
Figure 10-3. RC Oscillator External Connections
EN
R
EXT
EXTERNAL RC
OSC1
OSCILLATOR
INTCLK
RCCLK
OSC2- available for alternative pin function
See the Electricals section
for component value.
0
1
1
0
OSCOPT = EXTERNAL RC SELECTED
BUSCLKX4
ALTERNATIVE
PIN FUNCTION
sheet.
2
BUSCLKX2
OSC2EN
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