Specifications GAL16V8ZD
AC Switching Characteristics
Over Recommended Operating Conditions
COM
-15
COM
-12
TEST
DESCRIPTION
PARAMETER
UNITS
COND1.
MIN. MAX.
MIN. MAX.
tpd
tco
tcf2
tsu
th
A
A
Input or I/O to Combinational Output
Clock to Output Delay
3
2
12
8
3
2
15
10
7
ns
ns
ns
ns
—
—
Clock to Feedback Delay
—
10
6
—
15
Setup Time, Input or Feedback before Clock↑
Hold Time, Input or Feedback after Clock↑
—
—
—
0
—
—
0
—
—
ns
A
Maximum Clock Frequency with
External Feedback, 1/(tsu + tco)
55
40
MHz
fmax3
A
A
Maximum Clock Frequency with
Internal Feedback, 1/(tsu + tcf)
62.5
83.3
—
—
45.5
62.5
—
—
MHz
MHz
Maximum Clock Frequency with
No Feedback
twh
twl
—
—
Clock Pulse Duration, High
Clock Pulse Duration, Low
6
6
—
—
8
8
—
—
ns
ns
ten
B
B
Input or I/O to Output Enabled
OE to Output Enabled
—
—
12
12
—
—
15
15
ns
ns
tdis
C
C
Input or I/O to Output Disabled
OE to Output Disabled
—
—
15
12
—
—
15
15
ns
ns
1) Refer to Switching Test Conditions section.
2) Calculated from fmax with internal feedback. Refer to fmax Specification section.
3) Refer to fmax Specification section.
12
LATTICE [ LATTICE SEMICONDUCTOR ]
