mc68hc908qf4 Freescale Semiconductor, Inc, mc68hc908qf4 Datasheet - Page 121

• Manufacturer Part Number: mc68hc908qf4
• Description: M68hc08 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

14.3 SIM Bus Clock Control and Generation
MC68HC908QF4 — Rev. 1.0
MOTOROLA
$FE00
$FE01
$FE02
$FE03
$FE04
Addr.
$FE05
$FE06
SIM Reset Status Register
Interrupt Status Register 1
Interrupt Status Register 2
Interrupt Status Register 3
Break Status Register
Register Name
Break Flag Control
Register (BFCR)
See page 161.
See page 135.
See page 136.
See page 130.
See page 131.
See page 131.
Reserved
(SRSR)
(INT1)
(INT2)
(INT3)
(BSR)
The bus clock generator provides system clock signals for the CPU and peripherals
on the MCU. The system clocks are generated from an incoming clock,
BUSCLKX2, as shown in
Reset:
Reset:
Reset:
Reset:
Reset:
Read:
Write:
Read:
Write:
Read:
Write:
Read:
Write:
Read:
Write:
Read:
Write:
POR:
Freescale Semiconductor, Inc.
Figure 14-2. SIM I/O Register Summary
For More Information On This Product,
1. Writing a 0 clears SBSW.
BCFE
Bit 7
POR
IF14
R
R
R
R
R
0
1
0
0
0
0
0
0
System Integration Module (SIM)
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OSCILLATOR
OSCILLATOR
= Unimplemented
PIN
FROM
FROM
IF5
R
R
R
R
R
R
6
0
0
0
0
0
0
0
Figure 14-3. SIM Clock Signals
Figure
COP
IF4
BUSCLKX4
BUSCLKX2
R
R
R
R
R
R
0
0
0
0
0
0
0
5
14-3.
ILOP
IF3
R
R
R
R
R
R
4
0
0
0
0
0
0
0
÷
SIM COUNTER
SIM Bus Clock Control and Generation
2
SIM
ILAD
R
R
R
R
R
R
R
3
0
0
0
0
0
0
0
0
System Integration Module (SIM)
GENERATORS
BUS CLOCK
= Reserved
MODRST
IF1
R
R
R
R
R
R
2
0
0
0
0
0
0
0
SBSW
Note 1
LVI
R
R
R
R
R
1
0
0
0
0
0
0
0
0
Data Sheet
Bit 0
IF15
R
R
R
R
R
R
0
0
0
0
0
0
0
0
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