MC68HC711xxxx Motorola, MC68HC711xxxx Datasheet - Page 31

• Manufacturer Part Number: MC68HC711xxxx
• Description: Microcontrollers
• Manufacturer: Motorola

1.4.10.4 Port D
1.4.10.5 Port E
M68HC11E Family — Rev. 5
MOTOROLA
CAUTION:
Pins PD5–PD0 can be used for general-purpose I/O signals. These pins alternately
serve as the serial communication interface (SCI) and serial peripheral interface
(SPI) signals when those subsystems are enabled.
Use port E for general-purpose or analog-to-digital (A/D) inputs.
If high accuracy is required for A/D conversions, avoid reading port E during
sampling, as small disturbances can reduce the accuracy of that result.
•
•
•
PD0 is the receive data input (RxD) signal for the SCI.
PD1 is the transmit data output (TxD) signal for the SCI.
PD5–PD2 are dedicated to the SPI:
–
–
–
–
PD2 is the master in/slave out (MISO) signal.
PD3 is the master out/slave in (MOSI) signal.
PD4 is the serial clock (SCK) signal.
PD5 is the slave select (SS) input.
General Description
General Description
Pin Descriptions
Data Sheet
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