14.8.246 FA2A

This component is supported by ACT 1, ACT 2, ACT 3, 3200DX, MX, SX, SX-A, SX-S, eX, Accelerator families.

Figure 14-280. FA2A Logic Diagram
  • Function: 1-bit Adder, with active low Carry In and Carry Out, and active low A0 and A1 Inputs, used in multipliers
  • Input: A0, A1, B, CI
  • Output: CO, S
Table 14-468. Truth Table1
A0A1BCICOS
000000
000111
001001
001100
010011
010110
011000
011111
100011
100110
101000
101111
110011
110110
111000
111111
Table 14-469. Modules
FamilySeqComb
All2
Note: * A 2 on the symbol implies 2 logic module delays in all families.