© 2000 Scenix Semiconductor, Inc. All rights reserved.
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SX18AC/SX20AC/SX28AC/SX18AC75/SX20AC75/SX28AC75
17.3
AC Characteristics
SX18/20/28AC (Temp Range: 0°C <= Ta <= +70°C) and SX18/20/28AC-I (Temp Range: -40°C <= Ta <= +85°C)
Note:Data in the Typical (“TYP”) column is at 5V, 25°C unless otherwise stated.
Symbol
Parameter
Min
Typ
Max
Units
Conditions
Fosc
External CLKIN Frequency
DC
-
4.0
10
24
50
32
1.0
MHz
MHz
MHz
MHz
KHz
MHz
RC
XT1
XT2
HS1/HS2/HS3
LP1
LP2
Oscillator Frequency
DC
0.032
1.0
1.0
DC
0.032
-
4.0
10.0
24.0
50
32
1.0
MHz
MHz
MHz
MHz
KHz
MHz
RC
XT1
XT2
HS1/HS2/HS3
LP1
LP2
Tosc
External CLKIN Period
250
100
41.7
20
31.25
1.0
-
-
ns
ns
ns
ns
µs
µs
RC
XT1
XT2
HS1/HS2/HS3
LP1
LP2
Oscillator Period
250
0.1
41.7
20
31.25
1.0
-
-
31.25
1000.0
1000.0
-
31.25
ns
µs
ns
ns
µs
µs
RC
XT1
XT2
HS1/HS2/HS3
LP1
LP2
TosL, TosH
Clock in (OSC1) Low or High Time
50
8.0
2.0
-
-
ns
ns
µs
XT1/XT2
HS1/HS2/HS3
LP1/LP2
TosR, TosF
Clock in (OSC1) Rise or Fall Time
-
-
25
25
50
ns
ns
µs
XT1/XT2
HS1/HS2/HS3
LP1/LP2
