Specifications
GAL20RA10B
AC Switching Characteristics
Over Recommended Operating Conditions
COM
PARAM.
TEST
COND
1
.
COM
COM
COM / IND
COM
DESCRIPTION
Input or I/O to Combinatorial Output
Clock to Output Delay
Setup Time, Input or Fdbk before Clk↑
Hold Time, Input or Fdbk after Clk↑
Maximum Clock Frequency with
External Feedback, 1/(tsu + tco)
Maximum Clock Frequency with
No Feedback
Clock Pulse Duration, High
Clock Pulse Duration, Low
I or I/O to Output Enabled / Disabled
OE
to Output Enabled / Disabled
Input or I/O to Async. Reset / Preset
Async. Reset / Preset Pulse Duration
Async. Reset / Preset Recovery Time
Preload Pulse Duration
Preload Setup Time
Preload Hold Time
2
2
3
2
-7
MIN.
-10
MAX. MIN.
-15
-20
-30
UNITS
MAX.
MAX. MIN.
MAX. MIN.
MAX. MIN.
t
pd
t
co
t
su
t
h
f
max
3
A
A
—
—
A
A
7.5
9
—
—
—
—
—
—
7.5
5
9
—
—
—
—
—
2
2
4
3
66.7
71.4
7
7
—
—
—
10
7
10
7
7
10
11
—
—
—
—
—
—
10
9
11
—
—
—
—
—
—
—
7
3
45.0
50.0
10
10
—
—
—
15
10
15
10
10
15
15
—
—
—
—
—
—
15
12
15
—
—
—
—
—
—
—
10
3
33.3
41.7
12
12
—
—
—
20
12
20
15
15
20
20
—
—
—
—
—
—
20
15
20
—
—
—
—
—
—
—
20
10
20.0
25.0
20
20
—
—
—
20
20
30
25
25
30
30
—
—
—
—
—
—
30
20
30
—
—
—
—
—
ns
ns
ns
ns
MHz
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
83.3
83.3
6
6
—
—
—
6
7
8
5
5
t
wh
t
wl
t
en/
t
dis
t
en/
t
dis
t
ar/
t
ap
t
arw/
t
apw
t
arr/
t
apr
t
wp
t
sp
t
hp
—
—
B,C
B,C
A
—
—
—
—
—
1) Refer to
Switching Test Conditions
section.
2) Refer to
fmax Descriptions
section.
Capacitance (T
A
= 25°C, f = 1.0 MHz)
SYMBOL
C
I
C
I/O
PARAMETER
Input Capacitance
I/O Capacitance
MAXIMUM*
8
10
UNITS
pF
pF
TEST CONDITIONS
V
CC
= 5.0V, V
I
= 2.0V
V
CC
= 5.0V, V
I/O
= 2.0V
*Characterized but not 100% tested.
7
LATTICE [ LATTICE SEMICONDUCTOR ]
