8155 PPI

1. Block Diagram

2. Modes

2.1. Input

2.2. Output

2.3. Timer

3. Command Word Format

4. Features

4.1. 2 programmable 8 bit i/o port

4.2. 1 programmable 6 bit i/o port

4.3. 1 programmable 14 bit cpunter and timer

5. Description

6. Contain RAM i/o port and timer