MMC2107CFCPV33 Freescale Semiconductor, MMC2107CFCPV33 Datasheet - Page 497

• Manufacturer Part Number: MMC2107CFCPV33
• Description: IC MCU 33MHZ 128K FLASH 144-LQFP
• Manufacturer: Freescale Semiconductor
• Series: MCorer

Specifications of MMC2107CFCPV33

• Core Processor: M210
• Core Size: 32-Bit
• Speed: 33MHz
• Connectivity: EBI/EMI, SCI, SPI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 72
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 144-LQFP
• Data Bus Width: 32 bit
• Data Ram Size: 8 KB
• Interface Type: SCI, SPI
• Maximum Clock Frequency: 33 MHz
• Number Of Programmable I/os: 32
• Number Of Timers: 4 bit
• Operating Supply Voltage: 0 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: No RoHS Version Available

18.11.7 Analog Input Pins
MMC2107 – Rev. 2.0
MOTOROLA
V
R F
C F
R
SRC
SRC
SOURCE
= Filter impedance
= Filter capacitor
V
= Source voltage
= Source impedance
SRC
R
SRC
EXTERNAL FILTER
Figure 18-54. Electrical Model of an A/D Input Pin
Analog inputs should have low ac impedance at the pins. Low ac
impedance can be realized by placing a capacitor with good high
frequency characteristics at the input pin of the part. Ideally, that
capacitor should be as large as possible (within the practical range of
capacitors that still have good high-frequency characteristics). This
capacitor has two effects:
Series resistance can be used with the capacitor on an input pin to
implement a simple RC filter. The maximum level of filtering at the input
pins is application dependent and is based on the bandpass
characteristics required to accurately track the dynamic characteristics
of an input. Simple RC filtering at the pin may be limited by the source
impedance of the transducer or circuit supplying the analog signal to be
measured. (See
cases, the size of the capacitor at the pin may be very small.
Figure 18-54
model in the following discussion of the interaction between the external
circuitry and the circuitry inside the QADC.
R F
•
•
Freescale Semiconductor, Inc.
C
F
For More Information On This Product,
Queued Analog-to-Digital Converter (QADC)
It helps attenuate any noise that may exist on the input.
It sources charge during the sample period when the analog signal
source is a high-impedance source.
C P
C
V I
SAMP
= Internal parasitic capacitance
= Internal voltage source during sample and hold
INTERNAL CIRCUIT MODEL
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= Sample capacitor
is a simplified model of an input channel. Refer to this
S1
18.11.7.2 Error Resulting from
C
P
AMP
Queued Analog-to-Digital Converter (QADC)
S2
Pin Connection Considerations
C
SAMP
Leakage). In some
S3
Technical Data
V
I
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