MC912DT128ACPV Freescale Semiconductor, MC912DT128ACPV Datasheet - Page 202
MC912DT128ACPV
Manufacturer Part Number
MC912DT128ACPV
Description
IC 8MHZ 16 BIT MICROCONTROLLER
Manufacturer
Freescale Semiconductor
Series
HC12r
Datasheet
1.MC912DG128ACPVER.pdf
(478 pages)
Specifications of MC912DT128ACPV
Core Processor
CPU12
Core Size
16-Bit
Speed
8MHz
Connectivity
CAN, I²C, SCI, SPI
Peripherals
POR, PWM, WDT
Number Of I /o
67
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)
4.5 V ~ 5.5 V
Data Converters
A/D 16x8/10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
112-LQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
KMC912DT128ACPV
Q1195202
Q1195202
Available stocks
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Manufacturer
Quantity
Price
Company:
Part Number:
MC912DT128ACPVE
Manufacturer:
MEANWELL
Quantity:
1 000
Company:
Part Number:
MC912DT128ACPVE
Manufacturer:
Freescale Semiconductor
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Oscillator
Technical Data
202
yield an unacceptable NRM for a worst-case situation (the slope of the
NRM vs. capacitance curve is very steep, indicating severe sensitivity to
small variations). If the NRM optimization happened to be performed on
a best-case sample set, there could be unexpected sensitivity at worst-
case.
NRM measurement techniques can also generate misleading results
when applied to Automatic Level Control (ALC) style oscillator circuits
such as the D60x/Dx128x. Many NRM methods slowly increase series
resistance until oscillation stops. ALC-style oscillators reduce the gain of
the oscillator circuit after start-up to reduce current, so if the oscillator
tends to have more gain than optimum it will be more tolerant of
additional resistance after start-up than it will during the start-up process.
This means that NRM figures may be optimistic unless the method
verifies the NRM value by attempting to start the oscillator with the
additional resistance in-place. Worse, this phenomenon exaggerates
the difference between best- and worst-case NRM curves.
Freescale Semiconductor, Inc.
For More Information On This Product,
8
10
Go to: www.freescale.com
13
Negative Resistance Margin vs. Capacitance
15
Oscillator
18
Capacitance
22
27
33
39
47
56
68
MC68HC912DT128A — Rev 4.0
1000
100
10
WCS
TYP
TYP
BCS
MOTOROLA
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