MC68HC908GZ8 FREESCALE [Freescale Semiconductor, Inc], MC68HC908GZ8 Datasheet - Page 183

• Manufacturer Part Number: MC68HC908GZ8
• Description: M68HC08 Microcontrollers
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

15.3 Pin Name Conventions
The generic names of the ESCI input/output (I/O) pins are:
ESCI I/O lines are implemented by sharing parallel I/O port pins. The full name of an ESCI input or output
reflects the name of the shared port pin.
ESCI I/O pins. The generic pin names appear in the text of this section.
15.4 Functional Description
Figure 15-2
serial communication between the MCU and remote devices, including other MCUs. The transmitter and
receiver of the ESCI operate independently, although they use the same baud rate generator. During
normal operation, the CPU monitors the status of the ESCI, writes the data to be transmitted, and
processes received data.
The baud rate clock source for the ESCI can be selected via the configuration bit, ESCIBDSRC, of the
CONFIG2 register ($001E).
For reference, a summary of the ESCI module input/output registers is provided in
Freescale Semiconductor
•
•
RxD (receive data)
TxD (transmit data)
shows the structure of the ESCI module. The ESCI allows full-duplex, asynchronous, NRZ
Generic Pin Names
Full Pin Names
MC68HC908GZ16 • MC68HC908GZ8 Data Sheet, Rev. 4
Table 15-1. Pin Name Conventions
Table 15-1
PTE1/RxD
RxD
shows the full names and the generic names of the
PTE0/TxD
TxD
Figure
Pin Name Conventions
15-3.
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