Datasheet Details
| Part number | A8255 |
|---|---|
| Manufacturer | Altera Corporation |
| File Size | 196.42 KB |
| Description | PROGRAMMABLE PERIPHERAL INTERFACE ADAPTER |
| Datasheet |
 A8255 Datasheet
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| Part number | A8255 |
|---|---|
| Manufacturer | Altera Corporation |
| File Size | 196.42 KB |
| Description | PROGRAMMABLE PERIPHERAL INTERFACE ADAPTER |
| Datasheet |
A8255 Datasheet
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s a8255 MegaCore function implementing a programmable peripheral interface adapter s Optimized for FLEX® and MAX® architectures s 24 programmable inputs/outputs s Static read/write or handshaking modes s Direct bit set/reset capability s Synchronous design s Uses approximately 194 FLEX logic elements (LEs) s Functionally based on the Intel 8255A and Harris 82C55A devices, except as noted in the “Variations & Clarifications” section on page 56 The a8255 MegaCore function implements a programmable peripheral interface adapter (see Figure 1).
The a8255 has 24 I/O signals that can be programmed in two groups of 12.
This MegaCore function operates in the following three modes: s Mode 0: Basic Input/Output—Port A, port B, and port C (upper and lower) can be independently configured as inputs or outputs to read or hold static data.
September 1996, ver.
1 ® a8255 Programmable Peripheral Interface.
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