C8051T630DK Silicon Laboratories Inc, C8051T630DK Datasheet - Page 112
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C8051T630DK
Manufacturer Part Number
C8051T630DK
Description
KIT DEV FOR C8051T630 FAMILY
Manufacturer
Silicon Laboratories Inc
Type
MCUr
Specifications of C8051T630DK
Contents
Board, daughter boards, power adapter, cables, documentation and software
Processor To Be Evaluated
C8051T63x
Interface Type
USB
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With/related Products
C8051T630, T631, T632, T633, T634 and T635 MCUs
For Use With
336-1465 - BOARD SOCKET DAUGHTER 20-QFN
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
336-1464
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C8051T630/1/2/3/4/5
20.2. Assigning Port I/O Pins to Analog and Digital Functions
Port I/O pins can be assigned to various analog, digital, and external interrupt functions. The Port pins
assigned to analog functions should be configured for analog I/O, and Port pins assigned to digital or exter-
nal interrupt functions should be configured for digital I/O.
20.2.1. Assigning Port I/O Pins to Analog Functions
Table 20.1 shows all available analog functions that require Port I/O assignments. Port pins selected for
these analog functions should have their corresponding bit in PnSKIP set to 1. This reserves the pin
for use by the analog function and does not allow it to be claimed by the Crossbar. Table 20.1 shows the
potential mapping of Port I/O to each analog function.
20.2.2. Assigning Port I/O Pins to Digital Functions
Any Port pins not assigned to analog functions may be assigned to digital functions or used as GPIO. Most
digital functions rely on the Crossbar for pin assignment; however, some digital functions bypass the
Crossbar in a manner similar to the analog functions listed above. Port pins used by these digital func-
tions and any Port pins selected for use as GPIO should have their corresponding bit in PnSKIP set
to 1. Table 20.2 shows all available digital functions and the potential mapping of Port I/O to each digital
function.
112
Analog Function
ADC Input
Comparator0 Input
Voltage Reference (VREF0)
Current DAC Output (IDA0)
External Oscillator in RC or C Mode (EXTCLK)
Digital Function
UART0, SPI0, SMBus, CP0,
CP0A, SYSCLK, PCA0
(CEX0-2 and ECI), T0 or T1.
Any pin used for GPIO
Table 20.1. Port I/O Assignment for Analog Functions
Table 20.2. Port I/O Assignment for Digital Functions
Any Port pin available for assignment by the
Crossbar. This includes P0.0 - P1.7 pins which
have their PnSKIP bit set to 0.
Note: The Crossbar will always assign UART0
pins to P0.4 and P0.5.
Potentially Assignable Port Pins
Rev. 1.0
P0.0–P2.0
Potentially Assignable
P0.0–P1.7
P0.0–P1.7
Port Pins
P0.0
P0.1
P0.3
OSCXCN, PnSKIP
CPT0MX, PnSKIP
REF0CN, PnSKIP
IDA0CN, PnSKIP
SFR(s) used for
AMX0P, AMX0N,
SFR(s) used for
Assignment
XBR0, XBR1
Assignment
PnSKIP
PnSKIP
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