MC908AP32CFBE Freescale, MC908AP32CFBE Datasheet - Page 74
MC908AP32CFBE
Manufacturer Part Number
MC908AP32CFBE
Description
Manufacturer
Freescale
Datasheet
1.MC908AP32CFBE.pdf
(324 pages)
Specifications of MC908AP32CFBE
Cpu Family
HC08
Device Core Size
8b
Frequency (max)
8MHz
Interface Type
SCI/SPI
Total Internal Ram Size
2KB
# I/os (max)
32
Number Of Timers - General Purpose
4
Operating Supply Voltage (typ)
3.3/5V
Operating Supply Voltage (max)
5.5V
Operating Supply Voltage (min)
2.7V
On-chip Adc
8-chx10-bit
Instruction Set Architecture
CISC
Operating Temp Range
-40C to 85C
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
44
Package Type
PQFP
Program Memory Type
Flash
Program Memory Size
32KB
Lead Free Status / RoHS Status
Compliant
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Oscillator (OSC)
5.3 Internal Oscillator
The internal oscillator clock (ICLK), with a frequency of f
external components. It can be selected as the CGMXCLK for the CGM and MCU sub-systems; and the
OSCCLK clock for the TBM. The ICLK is also the reference clock input to the computer operating properly
(COP) module.
Due to the simplicity of the internal oscillator, it does not have the accuracy and stability of the RC
oscillator or the x-tal oscillator. Therefore, the ICLK is not suitable where an accurate bus clock is required
and it should not be used as the CGMRCLK to the CGM PLL.
The internal oscillator by default is always available and is free running after POR or reset. It can be
turned-off in stop mode by setting the STOP_ICLKDIS bit before executing the STOP instruction.
Figure 5-4
74
shows the logical representation of components of the internal oscillator circuitry.
MCU
STOP_ICLKDIS
CONFIG2
From SIM
MC68HC908AP Family Data Sheet, Rev. 4
SIMOSCEN
Figure 5-4. Internal Oscillator
INTERNAL OSCILLATOR
To Clock Selection MUX
and COP
EN
ICLK
ICLK
, is a free running clock that requires no
BUS CLOCK
From SIM
OSC2
Freescale Semiconductor
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