4

0425H–PLD–3/11

Atmel ATF16V8C

Figure 3.

AC waveforms

Note:

1. Timing measurement reference is 1.5V. Input AC driving levels are 0.0V and 3.0V, unless otherwise specified.

Table 3-1.

AC characteristics

Symbol

Parameter

-5

-7

-10

Units

Min

Max

Min

Max

Min

Max

t

PD

Input or feedback to non-registered output

1

5

3

7.5

3

10

ns

t

CF

Clock to feedback

3

3

6

ns

t

CO

Clock to output

142

527

ns

t

S

Input or feedback setup time

3

5

7.5

ns

t

H

Input hold time

0

0

0

ns

t

P

Clock period

6

8

12

ns

t

W

Clock width

3

4

6

ns

f

MAX

External feedback 1/(t

142

100

68

MHz

Internal feedback 1/(t

166

125

74

MHz

No feedback 1/(t

166

125

83

MHz

t

EA

Input to output enable – product term

2

6

3

9

3

10

ns

t

ER

Input to output disable – product term

2

5

2

9

2

10

ns

t

PZX

OE pin to output enable

2

5

2

6

2

10

ns

t

PXZ

OE pin to output disable

1.5

5

1.5

6

1.5

10

ns