MMC2114 MOTOROLA [Motorola, Inc], MMC2114 Datasheet - Page 435
MMC2114
Manufacturer Part Number
MMC2114
Description
M CORE Microcontrollers
Manufacturer
MOTOROLA [Motorola, Inc]
Datasheet
1.MMC2114.pdf
(654 pages)
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19.6.5 Multiplexed Analog Input Pins
19.6.6 Voltage Reference Pins
19.6.7 Dedicated Analog Supply Pins
19.6.8 Dedicated Digital I/O Port Supply Pin
MMC2114 • MMC2113 • MMC2112 — Rev. 1.0
MOTOROLA
NOTE:
In external multiplexed mode, four of the port QB pins are redefined to
each represent four analog input channels. See
V
voltages. Separating the reference inputs from the power supply pins
allows for additional external filtering, which increases reference voltage
precision and stability, and subsequently contributes to a higher degree
of conversion accuracy.
V
The V
QADC module. Dedicated power is required to isolate the sensitive
analog circuitry from the normal levels of noise present on the digital
power supply.
V
and port QB. This allows those pins to tolerate 5 volts when configured
as inputs and drive 5 volts when configured as outputs.
RH
RH
DDH
Freescale Semiconductor, Inc.
and V
and V
For More Information On This Product,
Queued Analog-to-Digital Converter (QADC)
DDA
provides 5-V power to the digital I/O functions of QADC port QA
Analog Input
Multiplexed
RL
and V
RL
Table 19-1. Multiplexed Analog Input Channels
Go to: www.freescale.com
ANw
are the dedicated input pins for the high and low reference
ANx
ANy
ANz
must be set to V
SSA
pins supply power to the analog subsystems of the
Even numbered channels from 0 to 6
Odd numbered channels from 1 to 7
Even numbered channels from 16 to 22
Odd numbered channels from 17 to 23
DDA
Queued Analog-to-Digital Converter (QADC)
and V
SSA
Channels
potential, respectively.
Table
Advance Information
19-1.
Signals
435
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