C8051T322-GQR Silicon Labs, C8051T322-GQR Datasheet - Page 53

• Manufacturer Part Number: C8051T322-GQR
• Description: 8-bit Microcontrollers - MCU USB-OTP-16K-LQFP32
• Manufacturer: Silicon Labs

Specifications of C8051T322-GQR

• Rohs: yes
• Core: 8051
• Processor Series: C8051
• Data Bus Width: 8 bit

8.5. ADC0 Analog Multiplexer (C8051T620/320/321 only)
ADC0 on the C8051T620/320/321 uses an analog input multiplexer to select the positive input to the ADC.
Any of the following may be selected as the positive input: Port 1, 2, P3.0 and some Port 0 I/O pins, the on-
chip temperature sensor, or the positive power supply (V
AMX0P register described in SFR Definition 8.9.
Important Note About ADC0 Input Configuration: Port pins selected as ADC0 inputs should be config-
ured as analog inputs, and should be skipped by the Digital Crossbar. To configure a Port pin for analog
input, set to 0 the corresponding bit in register PnMDIN. To force the Crossbar to skip a Port pin, set to 1
the corresponding bit in register PnSKIP. See Section “22. Port Input/Output” on page 133 for more Port
I/O configuration details.
Sensor
Temp
Figure 8.6. ADC0 Multiplexer Block Diagram
P1.0
P3.0
P0.0
P0.1
P0.4
P0.5
VDD
C8051T620/621/320/321/322/323
AMX0P
Rev. 1.1
AMUX
DD
). The ADC0 input channel is selected in the
ADC0
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