Serial Communications Interface (SCI) Signals
2.7 Serial Communications Interface (SCI) Signals
Table 2-9 Serial Communications Interface (SCI0) Signals
No. of
Pins
Signal
Name
Signal
Type
State During
Reset
Signal Description
1
TXD0
Output
Input
Input
Transmit Data (TXD0)—SCI0 transmit data output
GPIOB0
Input/Output
Port B GPIO—This pin is a General Purpose I/O (GPIO) pin that
can be individually programmed as an input or output pin.
After reset, the default state is SCI output.
1
RXD0
Input
Input
Input
Receive Data (RXD0)—SCI0 receive data input
GPIOB1
Input/Output
Port B GPIO—This pin is a General Purpose I/O (GPIO) pin that
can be individually programmed as an input or output pin.
After reset, the default state is SCI input.
2.8 Analog-to-Digital Converter (ADC) Signals
Table 2-10 Analog to Digital Converter Signals
No. of
Pins
Signal
Name
Signal
Type
State During
Reset
Signal Description
4
4
1
ANA0-3
ANA4-7
VREF
Input
Input
Input
Input
Input
Input
ANA0-3—Analog inputs to ADC, channel 1
ANA4-7—Analog inputs to ADC, channel 2
VREF—Analog reference voltage for ADC. Must be set to
VDDA-0.3V for optimal performance.
2.9 Quad Timer Module Signals
Table 2-11 Quad Timer Module Signals
No. of
Pins
Signal
Name
State During
Signal Type
Signal Description
Reset
3
TD0-2
Input/Output
Input/Output
Input
TD0-2—Timer D Channel 0-2
GPIOA0-2
Input
Port A GPIO—This pin is a General Purpose I/O (GPIO) pin that
can be individually programmed as an input or output pin.
After reset, the default state is the quad timer input.
56F801 Technical Data, Rev. 17
Freescale Semiconductor
13
FREESCALE [ Freescale ]
