MC68HC708XL36 FREESCALE [Freescale Semiconductor, Inc], MC68HC708XL36 Datasheet - Page 295

• Manufacturer Part Number: MC68HC708XL36
• Description: HCMOS Microcontroller Unit
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

13-ports_a
MOTOROLA
NOTE:
TCLK — Timer Clock Input
TxD — SCI Transmit Data Output
Data direction register E (DDRE) does not affect the data direction of
port E pins that are being used by the SCI module. However, the DDRE
bits always determine whether reading port E returns the states of the
latches or the states of the pins. (See Table 6.)
RxD — SCI Receive Data Input
The PE3/TCLK pin is the external clock input for the TIM. The
prescaler select bits, PS[2:0], select PE3/TCLK as the TIM clock
input. (See
selected as the TIM clock, PE3/TCLK is available for general-purpose
I/O.
The PE2/TxD pin is the transmit data output for the SCI module.
When the enable SCI bit, ENSCI, is clear, the SCI module is disabled
and the PE2/TxD pin is available for general-purpose I/O. (See
Communications Interface Module
The PE1/RxD pin is the receive data input for the SCI module. When
the enable SCI bit, ENSCI, is clear, the SCI module is disabled and
the PE1/RxD pin is available for general-purpose I/O. (See
Communications Interface Module
Freescale Semiconductor, Inc.
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Timer Interface Module
I/O Ports
on page 171.) When not
on page 235.)
on page 235.)
MC68HC708XL36
Serial
I/O Ports
Serial
Port E
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