Lin-Uart Pins; Block Diagram Of Lin-Uart Pins - Fujitsu F2MCTM-16LX Hardware Manual

20.3

LIN-UART Pins

This section describes the LIN-UART pins and provides a pin block diagram.
LIN-UART Pins
The LIN-UART pins also serve as general ports. Table 20.3-1 lists the pin functions, I/O formats, and
settings required to use LIN-UART.
Table 20.3-1 LIN-UART Pin
Pin Name Pin Function
P82/SIN0 Port I/O or serial
P85/SIN1 data input
P83/SOT0 Port I/O or serial
P86/SOT1 data output
P84/SCK0 Port I/O or serial
P87/SCK1 clock input/output
See "3. DC Characteristics in ELECTRICAL CHARACTERISTICS" in the data sheet for the standard
value.

Block Diagram of LIN-UART Pins

Port data register (PDR)
PDR read
PDR read
Port direction register (DDR)
DDR write
DDR read
Standby control: Stop mode (SPL=1), watch mode (SPL=1), timebase timer mode (SPL=1)
*: Resource I/O signals are inputted or outputted from pins having peripheral functions.
I/O Format
CMOS output/CMOS, Provided
Automotive input
Figure 20.3-1 Block Diagram of LIN-UART Pins
Resource input*
Output write
Direction latch
Standby Setting Required to Use Pin
Control
Set as input port
(DDR: corresponding bit = 0)
Set to output enable mode
(SMRn: SOE = 1)
Set as an input port when a clock is inputted
(DDR: corresponding bit = 0)
Set to output enable mode when a clock is outputted
(SMRn: SCKE = 1)
Resource output*
Resource output enable
Standby control (SPL = 1)
CHAPTER 20 LIN-UART
Pch
Pin
General-purpose I/O pin/SIN
General-purpose I/O pin/SCK
Nch
General-purpose I/O pin/SOT
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