ST92E163-EPB/US STMicroelectronics, ST92E163-EPB/US Datasheet - Page 18

• Manufacturer Part Number: ST92E163-EPB/US
• Description: KIT DEMO MASS STORAGE
• Manufacturer: STMicroelectronics
• Type: Microcontroller Programmerr

Specifications of ST92E163-EPB/US

• Contents: Programmer, Cable, Power Supply, Software, Manual and more
• For Use With/related Products: ST9 MCUs
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

ST92163R4 - GENERAL DESCRIPTION
How to configure the I/O ports
To configure the I/O ports, use the information in
Table 3
Table in the I/O Ports Chapter on
I/O Note = the hardware characteristics fixed for
each port line.
Inputs:
– If I/O note = TTL/CMOS, either TTL or CMOS in-
– If I/O note = Schmitt trigger, selecting CMOS or
Outputs:
– If I/O note = Push-Pull, either Push Pull or Open
– If I/O note = Open Drain, selecting Push-Pull by
Alternate Functions (AF) = More than one AF
cannot be assigned to an external pin at the same
time: it can be selected as follows, but simultane-
ous availability of several functions of one pin is
obviously impossible.
AF Inputs:
– AF is selected implicitly by enabling the corre-
18/230
put level can be selected by software.
TTL input by software has no effect, the input will
always be Schmitt Trigger.
Drain can be selected by software.
software has no effect, the input will always be
Open Drain.
sponding peripheral. Exceptions to this are ADC
and
Table 4
and the Port Bit Configuration
page
101.
AF Outputs or Bidirectional Lines:
– In the case of Outputs or I/Os, AF is selected ex-
Example 1: Timer/Watchdog input
AF: WDIN, Port: P5.5, I/O note: Input Schmitt Trig-
ger.
Write the port configuration bits:
P5C2.5=1
P5C1.5=0
P5C0.5=1
Enable the WDT peripheral by software as de-
scribed in the WDT chapter.
Example 2: Timer/Watchdog output
AF: WDOUT, Port: P5.7, I/O note: None
Write the port configuration bits:
P5C2.7=0
P5C1.7=1
P5C0.7=1
Example 3: ADC input
AF: AIN0, Port: P6.2, I/O note: Does not apply to
ADC
Write the port configuration bits:
P6C2.2=1
P6C1.2=1
P6C0.2=1
inputs which are selected explicitly as AF by soft-
ware.
plicitly by software.