Datasheet

Serial Communications Interface (SCI) Signals
56F801 Technical Data, Rev. 17
Freescale Semiconductor 13
2.7 Serial Communications Interface (SCI) Signals
2.8 Analog-to-Digital Converter (ADC) Signals
2.9 Quad Timer Module Signals
Table 2-9 Serial Communications Interface (SCI0) Signals
No. of
Pins
Signal
Name
Signal
Type
State During
Reset
Signal Description
1 TXD0
GPIOB0
Output
Input/Output
Input
Input
Transmit Data (TXD0)—SCI0 transmit data 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
GPIOB1
Input
Input/Output
Input
Input
Receive Data (RXD0)—SCI0 receive data input
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.
Table 2-10 Analog to Digital Converter Signals
No. of
Pins
Signal
Name
Signal
Type
State During
Reset
Signal Description
4 ANA0-3 Input Input ANA0-3—Analog inputs to ADC, channel 1
4 ANA4-7 Input Input ANA4-7—Analog inputs to ADC, channel 2
1 VREF Input Input VREF—Analog reference voltage for ADC. Must be set to
V
DDA
-0.3V for optimal performance.
Table 2-11 Quad Timer Module Signals
No. of
Pins
Signal
Name
Signal Type
State During
Reset
Signal Description
3 TD0-2
GPIOA0-2
Input/Output
Input/Output
Input
Input
TD0-2—Timer D Channel 0-2
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.