MCMC68HC05L16 Freescale Semiconductor, Inc, MCMC68HC05L16 Datasheet - Page 33

• Manufacturer Part Number: MCMC68HC05L16
• Description: M68hc05 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

CWOMx — Port C Open-Drain Mode (Bitx)
2.4.5 Key Wakeup Input Enable Register
KWIEx — Key Wakeup Input Enable (Bitx)
2.4.6 Mask Option Status Register
The mask option status register (MOSR) indicates the state of mask options specified prior to production
of the MC68HC05L16.
RSTR — RESET Pin Pullup Resistor
OSCR — OSC Feedback Resistor
XOSCR — OSC Feedback Resistor
Bits 4–0 — Reserved
Freescale Semiconductor
When CWOMx bit is set, port C bits x are configured as open-drain outputs if DDRCx is set. This bit is
cleared on reset.
When KWIEx bit is set, the KWIx (PBx) input is enabled for key wakeup interrupt. This bit is cleared on
reset.
When this bit is set, it indicates an internal pullup resistor is attached to the RESET pin by mask option.
When this bit is set, it indicates that an internal feedback resistor is attached between OSC1 and OSC2
by mask option.
When this bit is set, it indicates that an internal feedback resistor is attached between XOSC1 and
XOSC2. The damping resistor at the XOSC2 pin is attached by mask option.
These bits are not used and always read as logic 0.
Address:
Address:
Reset:
Reset:
Read:
Read:
Write:
Write:
Option Map — $000E
Figure 2-9. Key Wakeup Input Enable Register (KWIEN)
Option Map — $000F
KWIE7
RSTR
Bit 7
Bit 7
U
0
Figure 2-10. Mask Option Status Register (MOSR)
MC68HC05L16 • MC68HC705L16 Data Sheet, Rev. 4.1
= Unimplemented
KWIE6
OSCR
U
6
0
6
XOSCR
KWIE5
U
5
0
5
U = Unaffected
KWIE4
4
0
4
0
0
KWIE3
3
0
3
0
0
KWIE2
2
0
2
0
0
Option Map for I/O Configurations
KWIE1
1
0
1
0
0
KWIE0
Bit 0
Bit 0
0
0
0
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