ST6285 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'ST6285' PDF : 76 Pages View PDF
ST62T85B/E85B
I/O PORTS (Cont’d)
4.1.3 SPI alternate functions
PA6/Sin and PA5/Scl pins must be configured as
input through the DDR and OR registers to be
used as data in and data clock (Slave mode) for
the SPI. All input modes are available and I/O’s
can be read independently of the SPI at any time.
PA7/Sout must be configured in open drain output
mode to be used as data out for the SPI. In output
mode, the value present on the pin is the port data
register content only if PA7 is defined as push pull
output, while serial transmission is possible only in
open drain mode.
4.1.4 UART alternate functions
PB1/RXD1 pin must be configured as input
through the DDR and OR registers to be used as
reception line for the UART. All input modes are
available and PB1 can be read independently of
the UART at any time.
PB0/TXD1 pin must be configured as output
through the DDR and OR registers to be used as
transmission line for the UART. Value present on
the pin in output mode is the Data register content
as long as no transmission is active.
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