LPC47N227TQFP Standard Microsystems (SMSC), LPC47N227TQFP Datasheet - Page 123
LPC47N227TQFP
Manufacturer Part Number
LPC47N227TQFP
Description
Manufacturer
Standard Microsystems (SMSC)
Datasheet
1.LPC47N227TQFP.pdf
(200 pages)
Specifications of LPC47N227TQFP
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Each GPIO port has an 8-bit control register that controls the behavior of the pin. These registers are
defined in the Configuration section of this specification.
Each GPIO port may be configured as either an input or an output. If the pin is configured as an
output, it can be programmed as open-drain or push-pull. Inputs and outputs can be configured as
non-inverting or inverting.
Registers determine the signal polarity, and GPIO Output Type Register determines the output driver
type select. The GPIO Output Type Register applies to certain GPIOs (GP12-GP17 and GP20). The
GPIO Direction, Polarity and Output Type Registers control the GPIO pin when the pin is configured for
the GPIO function and when the pin is configured for the alternate function for all pins.
The basic GPIO configuration options are summarized in Table 50.
GPIO Operation
The operation of the GPIO ports is illustrated in FIGURE 5.
SELECTED
FUNCTION
GPIO
DIRECTION
GPIO Direction Registers determine the port direction, GPIO Polarity
Table 50 - GPIO Configuration Summary
BIT
B0
0
0
1
1
POLARITY
BIT
B1
0
1
0
1
123
Pin is a non-inverted output.
Pin is an inverted output.
Pin is a non-inverted input.
Pin is an inverted input.
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