mc68hc908gr8vp Freescale Semiconductor, Inc, mc68hc908gr8vp Datasheet - Page 189
mc68hc908gr8vp
Manufacturer Part Number
mc68hc908gr8vp
Description
M68hc08 Microcontrollers Microcontroller
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MC68HC908GR8VP.pdf
(286 pages)
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19.2 SIM Bus Clock Control and Generation
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, CGMOUT, as shown in
come from either an external oscillator or from the on-chip PLL. See
Freescale Semiconductor
Addr.
$FE04
$FE05
$FE06
OSCSTOPENB
CONFIG
FROM
Interrupt Status Register 1
Interrupt Status Register 2
Interrupt Status Register 3
OSC2
OSC1
Register Name
PHASE-LOCKED LOOP (PLL)
(INT1)
(INT2)
(INT3)
CGMRCLK
Figure 19-2. SIM I/O Register Summary (Continued)
OSCILLATOR (OSC)
Reset:
Reset:
Reset:
Read:
Read:
Read:
Write:
Write:
Write:
MC68HC908GR8 • MC68HC908GR4 Data Sheet, Rev. 7
Figure 19-3. CGM Clock Signals
Bit 7
IF14
IF6
R
R
R
0
0
0
0
= Unimplemented
IF13
IF5
6
R
R
R
0
0
0
0
CGMXCLK
CGMOUT
IF12
IF4
5
R
R
R
0
0
0
0
IF11
IF3
4
R
R
R
0
0
0
0
³ 2
SIM COUNTER
Chapter 7 Clock Generator
TO TIMTB15A, ADC
SIM Bus Clock Control and Generation
IF10
IF2
R
R
R
3
0
0
0
0
SIM
GENERATORS
BUS CLOCK
Figure
IF1
IF9
R
R
R
2
0
0
0
0
19-3. This clock can
IF16
IF8
1
R
R
R
0
0
0
0
SIMOSCEN
Module.
IT12
TO REST
OF CHIP
IT23
TO REST
OF CHIP
Bit 0
IF15
IF7
R
R
R
0
0
0
0
189
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