ST92T195 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
Manufacturer
ST92T195 Datasheet PDF : 249 Pages
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ST92195C/D - GENERAL DESCRIPTION
Port
Name
P4.4
P4.5
P4.6
P4.7
P5.0
P5.1
General
Purpose I/O
All ports useable
for general pur-
pose I/O (input,
output or bidi-
rectional)
Pin No.
TQFP64 SDIP56
44
46
45
47
46
48
47
49
14
20
13
19
PWM4
SCL2
PWM5
SDA2
PWM6
EXTRG
PWM7
STOUT0
INT2
SCK
SCL1
SDO
SDI
SDA1
Alternate Functions
O PWM Output 4
I/O I²C Channel 2 Serial Clock 1)
O PWM Output 5
I/O I²C Channel 2 Serial Data 1)
O PWM Output 6
I A/D Converter External Trigger Input
O PWM Output 7
O Standard Timer 0 Output
I External Interrupt 2
O SPI Serial Clock
I/O I²C Channel 1 Serial Clock 1)
O SPI Serial Data Out
I SPI Serial Data In
I/O I²C Channel 1 Serial Data 1)
Note 1: I²C available on ST92195D devices only.
Table 2. I/O Port Styles
Pins
Weak Pull-Up
Port Style
Reset Values
P0[7:0]
no
Standard I/O
BID / OD / TTL
P2[5,4,3,2]
no
Standard I/O
BID / OD / TTL
P2[1,0]
no
Schmitt trigger
BID / OD / TTL
P3.7
yes
Standard I/O
AF / PP / TTL
P3[6,5,4]
no
Standard I/O
BID / OD / TTL
P4[7:0]
no
Standard I/O
BID / OD / TTL
P5[1:0]
no
Standard I/O
BID / OD / TTL
Legend:
AF= Alternate Function, BID = Bidirectional, OD = Open Drain
PP = Push-Pull, TTL = TTL Standard Input Levels
How to Read this Table
To configure the I/O ports, use the information in
this table and the Port Bit Configuration Table in
the I/O Ports Chapter on page 71.
– If WPU = yes, then the WPU can be enabled/dis-
able by software
– If WPU = no, then enabling the WPU by software
has no effect
Port Style= the hardware characteristics fixed for
each port line.
Inputs:
– If port style = Standard I/O, either TTL or CMOS
input level can be selected by software.
– If port style = Schmitt trigger, selecting CMOS or
TTL input by software has no effect, the input will
always be Schmitt Trigger.
Weak Pull-Up = This column indicates if a weak
pull-up is present or not.
Alternate Functions (AF) = More than one AF
cannot be assigned to an external pin at the same
time:
An alternate function can be selected as follows.
AF Inputs:
– AF is selected implicitly by enabling the corre-
sponding peripheral. Exception to this are ADC
analog inputs which must be explicitly selected
as AF by software.
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