MC9S12H128VFVE Freescale Semiconductor, MC9S12H128VFVE Datasheet - Page 109

• Manufacturer Part Number: MC9S12H128VFVE
• Description: IC MCU 128K FLASH 16MHZ 144-LQFP
• Manufacturer: Freescale Semiconductor
• Series: HCS12r

Specifications of MC9S12H128VFVE

• Core Processor: HCS12
• Core Size: 16-Bit
• Speed: 16MHz
• Connectivity: CAN, I²C, SCI, SPI
• Peripherals: LCD, POR, PWM, WDT
• Number Of I /o: 99
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 4K x 8
• Ram Size: 6K x 8
• Voltage - Supply (vcc/vdd): 2.35 V ~ 5.25 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 105°C
• Package / Case: 144-LQFP
• Processor Series: S12H
• Core: HCS12
• Data Bus Width: 16 bit
• Data Ram Size: 6 KB
• Interface Type: CAN/I2C/SCI/SPI
• Maximum Clock Frequency: 16 MHz
• Number Of Programmable I/os: 99
• Number Of Timers: 8
• Operating Supply Voltage: - 0.3 V to + 6 V
• Maximum Operating Temperature: + 105 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: EWHCS12
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 16-ch x 10-bit
• Package: 144LQFP
• Family Name: HCS12
• Maximum Speed: 16 MHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

A.4.3 Phase Locked Loop
The oscillator provides the reference clock for the PLL. The PLL´s Voltage Controlled Oscillator (VCO)
is also the system clock source in self clock mode.
A.4.3.1 XFC Component Selection
This section describes the selection of the XFC components to achieve a good filter characteristics.
The following procedure can be used to calculate the resistance and capacitance values using typical
values for K
The VCO Gain at the desired VCO output frequency is approximated by:
The phase detector relationship is given by:
i
ch
3. XCLKS =1 during reset
is the current in tracking mode.
1
, f
1
and i
f
osc
ch
from Table A-15.
refdv+1
Figure A-2 Basic PLL functional diagram
1
f
ref
K
V
K
=
K
=
1
f
cmp
i
ch
e
Loop Divider
---------------------- -
Detector
f
K
Phase
1
K
synr+1
1
–
K
V
f
1V
1
vco
C
MC9S12H256 Device User Guide — V01.20
s
VDDPLL
R
1
2
C
p
VCO
K
V
f
vco
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