It can handle two TTL loads on its outputs and has an input load of 10 p, A. Figure 9-3 shows the pinout and block diagram of the 8255 IC. The 8255 has three input /output ports, a bidirectional data bus to communicate with the computer on, anbsp;...
Title | : | Z80 Microprocessor Technology |
Author | : | James Bignell, Robert Donovan |
Publisher | : | Delmar Pub - 1986-01 |
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