a2f500m3b-1csh484 Actel Corporation, a2f500m3b-1csh484 Datasheet - Page 40

• Manufacturer Part Number: a2f500m3b-1csh484
• Description: Actel
• Manufacturer: Actel Corporation

SmartFusion DC and Switching Characteristics
2- 28
Detailed I/O DC Characteristics
Table 2-25 • Input Capacitance
Table 2-26 • I/O Output Buffer Maximum Resistances
Symbol
C
C
Standard
3.3 V LVTTL / 3.3 V LVCMOS
2.5 V LVCMOS
1.8 V LVCMOS
1.5 V LVCMOS
3.3 V PCI/PCI-X
Notes:
1. These maximum values are provided for information only. Minimum output buffer resistance values
2. R
3. R
IN
INCLK
depend on VCCxxxxIOBx, drive strength selection, temperature, and process. For board design
considerations and detailed output buffer resistances, use the corresponding IBIS models located on the
Actel website at
toolset).
(PULL-DOWN-MAX)
(PULL-UP-MAX)
Input capacitance
Input capacitance on the clock pin
Applicable to FPGA I/O Banks
= (V
http://www.actel.com/download/ibis/default.aspx
= (V
CCImax
OLspec
Definition
– V
) / I
OHspec
OLspec
) / I
Per PCI/PCI-X specification
OHspe c
R e visio n 3
Drive Strength
12 mA
16 mA
24 mA
12 mA
16 mA
24 mA
12 mA
16 mA
12 mA
2 mA
4 mA
6 mA
8 mA
2 mA
4 mA
6 mA
8 mA
2 mA
4 mA
6 mA
8 mA
2 mA
4 mA
6 mA
8 mA
1
V
V
IN
IN
= 0, f = 1.0 MHz
= 0, f = 1.0 MHz
Conditions
(also generated by the Actel Libero IDE
R
PULL-DOWN
(Ω)
100
100
100
100
200
100
200
100
50
50
25
17
50
50
25
20
50
50
20
20
67
33
33
25
11
11
Min.
2
Max.
8
8
R
PULL-UP
(Ω)
300
300
150
150
200
200
100
100
225
224
112
112
75
50
33
50
40
22
56
56
22
22
75
37
37
75
Units
3
pF
pF