6 of 10

04-02-010F

Additional Macrocell Configurations

Besides the standard four-configuration macrocells, each

PEEL™22CV10A provides an additional eight configura-

tions (twelve total) that can be used to increase design flex-

ibility

(see Figure 6 and Table 2). For logic assembly of all twelve

configurations,

specify

PEEL™22CV10A+

and

PEEL22CV10A++.

Configuration

Input/Feedback Select

Output Select

#

A B C D

1

1

1

1

1

Bi-Directional I/O

Register

Active Low

2

0

1

1

1

Active High

3

1

0

1

1

Combinatorial

Active Low

4

0

0

1

1

Active High

5

1

1

1

0

Combinatorial Feedback

Register

Active Low

6

0

1

1

0

Active High

7

1

0

1

0

Combinatorial

Active Low

8

0

0

1

0

Active High

9

1

1

0

0

Register Feedback

Register

Active Low

10

1

0

0

0

Active High

11

1

0

0

0

Combinatorial

Active Low

12

0

0

0

0

Active High

Figure 6. Twelve Configurations of the PEEL™22CV10A+ and PEEL22CV10A++ I/O Macrocell

Table 2. PEEL™ 22CV10A+ & A++ Macrocell Configuration Bits