ProASIC3 Flash Family FPGAs
Revision 13
2-31
Single-Ended I/O Characteristics
3.3 V LVTTL / 3.3 V LVCMOS
Low-Voltage Transistor–Transistor Logic (LVTTL) is a general-purpose standard (EIA/JESD) for 3.3 V
applications. It uses an LVTTL input buffer and push-pull output buffer.
Table 2-37 Minimum and Maximum DC Input and Output Levels
Applicable to Advanced I/O Banks
3.3 V LVTTL /
3.3 V LVCMOS
VIL
VIH
VOL
VOH IOL IOH
IOSL
IOSH
IIL1 IIH2
Drive Strength
Min.
V
Max.
V
Min.
V
Max.
V
Max.
V
Min.
VmA mA
Max.
mA3
Max.
mA3
A4 A4
2 mA
–0.3
0.8
2
3.6
0.4
2.4
2
27
25
10 10
4 mA
–0.3
0.8
2
3.6
0.4
2.4
4
27
25
10 10
6 mA
–0.3
0.8
2
3.6
0.4
2.4
6
54
51
10 10
8 mA
–0.3
0.8
2
3.6
0.4
2.4
8
54
51
10 10
12 mA
–0.3
0.8
2
3.6
0.4
2.4
12 12
109
103
10 10
16 mA
–0.3
0.8
2
3.6
0.4
2.4
16 16
127
132
10 10
24 mA
–0.3
0.8
2
3.6
0.4
2.4
24 24
181
268
10 10
Notes:
1. IIL is the input leakage current per I/O pin over recommended operation conditions where –0.3 V < VIN < VIL.
2. IIH is the input leakage current per I/O pin over recommended operating conditions VIH < VIN < VCCI. Input current is
larger when operating outside recommended ranges
3. Currents are measured at 100°C junction temperature and maximum voltage.
4. Currents are measured at 85°C junction temperature.
5. Software default selection highlighted in gray.
Table 2-38 Minimum and Maximum DC Input and Output Levels
Applicable to Standard Plus I/O Banks
3.3 V LVTTL /
3.3 V LVCMOS
VIL
VIH
VOL
VOH
IOL IOH
IOSL
IOSH
IIL1 IIH2
Drive Strength
Min.
V
Max.
V
Min.
V
Max.
V
Max.
V
Min.
VmA mA
Max.
mA3
Max.
mA3
A4 A4
2 mA
–0.3
0.8
2
3.6
0.4
2.4
2
27
25
10
4 mA
–0.3
0.8
2
3.6
0.4
2.4
4
27
25
10
6 mA
–0.3
0.8
2
3.6
0.4
2.4
6
54
51
10
8 mA
–0.3
0.8
2
3.6
0.4
2.4
8
54
51
10
12 mA
–0.3
0.8
2
3.6
0.4
2.4
12
109
103
10
16 mA
–0.3
0.8
2
3.6
0.4
2.4
16
109
103
10
Notes:
1. IIL is the input leakage current per I/O pin over recommended operation conditions where –0.3 V < VIN < VIL.
2. IIH is the input leakage current per I/O pin over recommended operating conditions VIH < VIN < VCCI. Input current is
larger when operating outside recommended ranges
3. Currents are measured at 100°C junction temperature and maximum voltage.
4. Currents are measured at 85°C junction temperature.
5. Software default selection highlighted in gray.