MC68HC908AZ32ACFU MOTOROLA [Motorola, Inc], MC68HC908AZ32ACFU Datasheet - Page 116
MC68HC908AZ32ACFU
Manufacturer Part Number
MC68HC908AZ32ACFU
Description
Microcontrollers
Manufacturer
MOTOROLA [Motorola, Inc]
Datasheet
1.MC68HC908AZ32ACFU.pdf
(468 pages)
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System Integration Module (SIM)
7.3 SIM Bus Clock Control and Generation
7.3.1 Bus Timing
Advance Information
116
Table 7-2
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
8. Clock Generator Module
In user mode, the internal bus frequency is either the crystal oscillator
output (CGMXCLK) divided by four or the PLL output (CGMVCLK)
divided by four. (See
Freescale Semiconductor, Inc.
Signal Name
CGMXCLK
CGMVCLK
CGMOUT
PORRST
For More Information On This Product,
IRST
R/W
IAB
IDB
System Integration Module (SIM)
shows the internal signal names used in this section.
Go to: www.freescale.com
Table 7-1. I/O Register Address Summary
Register
Address
Table 7-2. Signal Name Conventions
Buffered Version of OSC1 from Clock Generator Module
PLL Output
PLL-Based or OSC1-Based Clock Output from CGM Module
Internal Address Bus
Internal Data Bus
Signal from the Power-On Reset Module to the SIM
Internal Reset Signal
Read/Write Signal
(CGM)
(Bus Clock = CGMOUT Divided by Two)
Section 8. Clock Generator Module
$FE00
SBSR
(CGM)).
$FE01
SRSR
Description
Figure
7-3. This clock can come
68HC908AZ32A — Rev 0.0
SBFCR
$FE03
(CGM)).
MOTOROLA
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