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
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 |
| 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 |
|
|
| O |
RESETO | |||||
| 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 |
|
|
|
|
|
|
|
| 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 |
|
|
|
|
|
|
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