s908ab32ag0cfue Freescale Semiconductor, Inc, s908ab32ag0cfue Datasheet - Page 112
s908ab32ag0cfue
Manufacturer Part Number
s908ab32ag0cfue
Description
M68hc08 Microcontrollers
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.S908AB32AG0CFUE.pdf
(392 pages)
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System Integration Module (SIM)
8.3 SIM Bus Clock Control and Generation
Technical Data
112
Note: Writing a logic 0 clears SBSW.
Addr.
$FE00
$FE01
$FE03
OSC1
SIM Break Status Register
SIM Reset Status Register
SIM Break Flag Control
Register Name
CGMVCLK
PLL
(SBFCR)
Register
(SRSR)
(SBSR)
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
from either an external oscillator or from the on-chip PLL.
See
MONITOR MODE
Reset:
Reset:
Read:
Read:
Read:
Write:
Write:
Write:
POR:
USER MODE
Figure 8-2. SIM I/O Register Summary
CIRCUIT
SELECT
CLOCK
Section 9. Clock Generator Module
BCS
CGM
Figure 8-3. CGM Clock Signals
BCFE
PTC3
Bit 7
POR
R
0
1
0
System Integration Module (SIM)
÷
= Unimplemented
2
PIN
R
R
6
0
0
A
B S
COP
*
*
R
R
5
0
0
CGMOUT = B
When S = 1,
CGMXCLK
CGMOUT
ILOP
R
R
4
0
0
Figure
ILAD
R
R
R
3
0
0
(CGM).
8-3. This clock can come
MC68HC908AB32
SIM COUNTER
÷
= Reserved
2
Freescale Semiconductor
R
R
0
0
0
SIM
2
GENERATORS
BUS CLOCK
SBSW
Note
LVI
R
1
0
0
—
Rev. 1.1
Bit 0
R
R
0
0
0
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