ST78C34 Overview
The ST78C34 is a monolithic Bidirectional Parallel port designed to operate as a general purpose I/O port. It contains all the necessary input/output signals to be configured as a CENTRONICS printer port. The ST78C34 is a general purpose input/output controller with 83 byte internal FIFO.
ST78C34 Key Features
- 83 bytes of printer output FIFO
- Bi-directional software parallel port
- Bi-directional I/O ports
- Register patible to IBM XT, AT, patible 386, 486
- Selectable interrupt polarity
- Selectable FIFO interrupts
- SLCTIN
- STROBE INIT -AUTOFDX -SELCTIN PE, SELECT BUSY, -ACK -ERROR