MC9S12DB128CPVE Freescale Semiconductor, MC9S12DB128CPVE Datasheet - Page 122

• Manufacturer Part Number: MC9S12DB128CPVE
• Description: IC MCU 128K FLASH 25MHZ 112-LQFP
• Manufacturer: Freescale Semiconductor
• Series: HCS12r

Specifications of MC9S12DB128CPVE

• Core Processor: HCS12
• Core Size: 16-Bit
• Speed: 25MHz
• Connectivity: CAN, I²C, SCI, SPI
• Peripherals: PWM, WDT
• Number Of I /o: 91
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 2K x 8
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 2.35 V ~ 5.25 V
• Data Converters: A/D 16x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 112-LQFP
• Controller Family/series: HCS12/S12X
• No. Of I/o's: 91
• Eeprom Memory Size: 2048Byte
• Ram Memory Size: 8192Byte
• Cpu Speed: 25MHz
• Rohs Compliant: Yes
• Package: 112LQFP
• Family Name: HCS12
• Maximum Speed: 50 MHz
• Operating Supply Voltage: 3.3|5 V
• Data Bus Width: 16 Bit
• Number Of Programmable I/os: 91
• Interface Type: CAN/SCI/SPI
• On-chip Adc: 2(8-chx10-bit)
• Number Of Timers: 8
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Device User Guide — 9S12DT128DGV2/D V02.15
The following procedure can be used to calculate the resistance and capacitance values using typical
values for K
The grey boxes show the calculation for f
for f
The VCO Gain at the desired VCO frequency is approximated by:
The phase detector relationship is given by:
i
The loop bandwidth f
typical values are 50. = 0.9 ensures a good transient response.
ch
122
is the current in tracking mode.
OSC
= 4MHz and a 25MHz bus clock.
1
, f
1
and i
f
osc
K
V
C
f
ch
C
should be chosen to fulfill the Gardner’s stability criteria by at least a factor of 10,
from (Table A-16).
=
<
K
refdv+1
K
------------------------------------------
Figure A-3 Basic PLL functional diagram
1
=
1
2
e
–
---------------------- -
+
f
K
i
1
ch
1
f
–
ref
VDDPLL
1
f
f
1V
ref
VCO
vco
+
K
=
V
= 50MHz and f
2
–
100
f
----- -
10
cmp
1
C
C
p
Loop Divider
s
e
Detector
= 316.7Hz/
----------------------- -
Phase
60 50
f
synr+1
C
f
K
–
C
100
ref
1
–
<
R
< 25kHz
= 1MHz. E.g., these frequencies are used
------------- -
4 10
= -90.48MHz/V
f
ref
;
XFC Pin
=
1
2
0.9
Freescale Semiconductor
VCO
K
V
f
vco