SpSepceifcicifaictaiotinosnsGGALA2L62C6VC1V21B2
AC Switching Characteristics
Over Recommended Operating Conditions
COM / IND
-20
COM
-10
COM / IND
-15
TEST
DESCRIPTION
PARAMETER
UNITS
COND.1
MIN. MAX.
MIN. MAX.
MIN. MAX.
tpd
tco
tcf2
tsu1
tsu2
th
A
A
Input or I/O to Combinatorial Output
Clock to Output Delay
3
2
10
7
3
15
8
3
20
12
10
—
—
ns
ns
ns
ns
ns
2
2
—
—
—
Clock to Feedback Delay
—
7
2.5
—
—
—
10
10
2.5
—
—
—
12
12
Setup Time, Input or Feedback before Clock ↑
Setup Time, SP before Clock ↑
Hold Time, Input or Feedback after Clock ↑
10
—
0
—
—
0
—
—
0
—
—
ns
A
Maximum Clock Frequency with
External Feedback, 1/(tsu + tco)
71.4
55.5
41.6
MHz
fmax3
A
A
Maximum Clock Frequency with
Internal Feedback, 1/(tsu + tcf)
105
105
—
—
80
—
—
45.4
62.5
—
—
MHz
MHz
Maximum Clock Frequency with
No Feedback
83.3
twh
twl
—
—
B
Clock Pulse Duration, High
4
4
—
—
10
10
13
—
—
—
6
6
—
—
15
15
20
—
—
—
8
8
—
—
20
20
25
—
—
—
ns
ns
ns
ns
ns
ns
ns
ns
Clock Pulse Duration, Low
ten
tdis
tar
Input or I/O to Output Enabled
3
3
3
C
Input or I/O to Output Disabled
3
3
3
A
Input or I/O to Asynchronous Reset of Register
Asynchronous Reset Pulse Duration
Asynchronous Reset to Clock Recovery Time
Synchronous Preset to Clock Recovery Time
3
3
3
tarw
tarr
tspr
—
—
—
8
10
10
10
15
15
12
8
10
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.
Capacitance (TA = 25°C, f = 1.0 MHz)
SYMBOL
PARAMETER
Input Capacitance
I/O Capacitance
MAXIMUM*
UNITS
pF
TEST CONDITIONS
VCC = 5.0V, VI = 2.0V
VCC = 5.0V, VI/O = 2.0V
CI
8
8
CI/O
pF
*Characterized but not 100% tested.
9
LATTICE [ LATTICE SEMICONDUCTOR ]
