MC908AP32CFBE Freescale, MC908AP32CFBE Datasheet - Page 88
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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Clock Generator Module (CGM)
6.4.3 PLL Analog Ground Pin (V
V
potential as the V
6.4.4 Oscillator Output Frequency Signal (CGMXCLK)
CGMXCLK is the oscillator output signal. It runs at the full speed of the oscillator, and is generated directly
from the crystal oscillator circuit, the RC oscillator circuit, or the internal oscillator circuit.
6.4.5 CGM Reference Clock (CGMRCLK)
CGMRCLK is a buffered version of CGMXCLK, this clock is the reference clock for the phase-locked-loop
circuit.
6.4.6 CGM VCO Clock Output (CGMVCLK)
CGMVCLK is the clock output from the VCO.
6.4.7 CGM Base Clock Output (CGMOUT)
CGMOUT is the clock output of the CGM. This signal goes to the SIM, which generates the MCU clocks.
CGMOUT is a 50 percent duty cycle clock running at twice the bus frequency. CGMOUT is software
programmable to be either the oscillator output, CGMXCLK, divided by two or the divided VCO clock,
CGMPCLK, divided by two.
6.4.8 CGM CPU Interrupt (CGMINT)
CGMINT is the interrupt signal generated by the PLL lock detector.
6.5 CGM Registers
The following registers control and monitor operation of the CGM:
88
SSA
•
•
•
•
•
is a ground pin used by the analog portions of the PLL. Connect the V
PLL control register (PCTL)
(See
PLL bandwidth control register (PBWC)
(See
PLL multiplier select registers (PMSH and PMSL)
(See
PLL VCO range select register (PMRS)
(See
PLL reference divider select register (PMDS)
(See
6.5.1 PLL Control
6.5.2 PLL Bandwidth Control
6.5.3 PLL Multiplier Select
6.5.4 PLL VCO Range Select
6.5.5 PLL Reference Divider Select
Route V
capacitors as close as possible to the package.
SS
pin.
SSA
carefully for maximum noise immunity and place bypass
Register.)
MC68HC908AP Family Data Sheet, Rev. 4
SSA
Registers.)
Register.)
)
Register.)
Register.)
NOTE
SSA
pin to the same voltage
Freescale Semiconductor
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