is functional confi guration provides a means for communicating with a peripheral device or
structure on a single 8-bit bus for both transmitting and receiving data (bidirectional bus I/O).
‘Handshaking’ signals are provided to maintain proper bus fl ow discipline in a similar manner
to Mode 1. Interrupt generation and enable/disable functions are also available.
Mode 2 Basic Functional Defi nitions:
Used in Group A only.i)
One 8-bit, bi-directional bus port (Port A) and a 5-bit control port (Port C).ii)
Both inputs and outputs are latched.iii)
e 5-bit control port (P
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month, and much more.