M1AFS250-FGG256I Actel Corporation, M1AFS250-FGG256I Datasheet - Page 189

• Manufacturer Part Number: M1AFS250-FGG256I
• Description: Actel Fusion Family Of Mixed Signal Fpgas
• Manufacturer: Actel Corporation

Table 2-93 • I/O Output Buffer Maximum Resistances
Table 2-94 • I/O Weak Pull-Up/Pull-Down Resistances
Standard
Applicable to Standard I/O Banks
3.3 V LVTTL / 3.3 V LVCMOS
2.5 V LVCMOS
1.8 V LVCMOS
1.5 V LVCMOS
Notes:
1. These maximum values are provided for informational reasons only. Minimum output buffer resistance values depend
2. R
3. R
VCCI
3.3 V
2.5 V
1.8 V
1.5 V
Notes:
1. R
2. R
on V
resistances, use the corresponding IBIS models located on the Actel website:
http://www.actel.com/techdocs/models/ibis.html.
(PULL-DOWN-MAX)
(PULL-UP-MAX)
(WEAK PULL-DOWN-MAX)
(WEAK PULL-UP-MAX)
CC
, drive strength selection, temperature, and process. For board design considerations and detailed output buffer
Minimum and Maximum Weak Pull-Up/Pull-Down Resistance Values
= (VCCImax – VOHspec) / I
= VOLspec / I
= (VCCImax – VOHspec) / I
= VOLspec / I
Min.
10 k
18 k
19 k
11 k
OLspec
R
(WEAK PULL-UP)
WEAK PULL-DOWN-MIN
Drive Strength
(ohms)
O H spec
2 mA
4 mA
6 mA
8 mA
2 mA
4 mA
6 mA
8 mA
2 mA
4 mA
2 mA
WEAK PULL-UP-MIN
1
Max.
45 k
55 k
70 k
90 k
1
R e v i s i o n 1
(continued)
R
PULL-DOWN
(ohms)
100
100
100
100
200
100
200
50
50
50
50
Actel Fusion Family of Mixed Signal FPGAs
Min.
10 k
12 k
17 k
19 k
2
R
(WEAK PULL-DOWN)
(ohms)
R
(ohms)
PULL-UP
300
300
150
150
200
200
100
100
225
224
140 k
112
110 k
Max.
2
45 k
74 k
3
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