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ST92195B - GENERAL INFORMATION
PIN DESCRIPTION (Cont’d)
P0[7:0], P2[5:0], P3[7:4], P4[7:0], P5[1:0]
I/O Port Lines
(Input/Output, TTL or CMOS com-
patible).
28 lines grouped into I/O ports, bit programmable
as general purpose I/O or as Alternate functions
(see I/O section).
Important
: Note that open-drain outputs are for
logic levels only and are not true open drain.
1.2.1 I/O Port Alternate Functions.
Each pin of the I/O ports of the ST92195 may as-
sume software programmable Alternate Functions
(see Table 1).
Table 1. ST92195 I/O Port Alternate Function Summary
Port bit Alternate Function Name Function
P0.2 A/D Analog input 4 AIN4 I
P2.0 External interrupt 7 INT7 I
P2.1 External interrupt 5 INT5 I
A/D analog input 1 AIN1 I
P2.2 External interrupt 0 INT0 I
A/D analog input 2 AIN2 I
P2.3 External interrupt 6 INT6 I
Voltage synthesis output1 VSO1 O
P2.4 Non-maskable interrupt NMI I
P2.5 Voltage synthesis output2 VSO2 O
A/D analog input 3 AIN3 I
External interrupt 4 INT4 I
P3.4
P3.5
P3.7 Internal reset output RESETO
O
Composite Sync output CSO O
P4.0 PWM output 0 PWM0 O
P4.1 PWM output 1 PWM1 O
P4.2 PWM output 2 PWM2 O
P4.3 PWM output 3 PWM3 O
Translucency digital output TSLU O
Half-tone output HT O
P4.4 PWM output 4 PWM4 O
P4.5 PWM output 5 PWM5 O
P4.6 PWM output 6 PWM6 O
P4.7 PWM output 7 PWM7 O
External A/D trigger EXTRG I
Standard timer output STOUT O
P5.0 External interrupt 2 INT2 I
SPI serial clock SCK O
P5.1 SPI serial data out SDO O
SPI serial data in SDI I
