
Actel Fusion Mixed-Signal FPGAs
Pr el iminar y v1 .7
2- 183
1.8 V LVCMOS
Low-Voltage CMOS for 1.8 V is an extension of the LVCMOS standard (JESD8-5) used for general-
purpose 1.8 V applications. It uses a 1.8 V input buffer and push-pull output buffer.
Table 2-115 Minimum and Maximum DC Input and Output Levels
1.8 V
LVCMOS
VIL
VIH
VOL
VOH
IOL IOH
IOSL
IOSH
IIL
IIH
Drive
Strength
Min., V
Max., V
Min., V
Max., V
Min., V
mA mA
Max.,
mA1
Max.,
mA1
A2 A2
Applicable to Pro I/O Banks
2 mA
–0.3
0.35 * VCCI 0.65 * VCCI
3.6
0.45
VCCI – 0.45
2
11
9
10
4 mA
–0.3
0.35 * VCCI 0.65 * VCCI
3.6
0.45
VCCI – 0.45
4
22
17
10
6 mA
–0.3
0.35 * VCCI 0.65 * VCCI
3.6
0.45
VCCI – 0.45
6
44
35
10
8 mA
–0.3
0.35 * VCCI 0.65 * VCCI
3.6
0.45
VCCI – 0.45
8
51
45
10
12 mA
–0.3
0.35 * VCCI 0.65 * VCCI
3.6
0.45
VCCI – 0.45 12 12
74
91
10
16 mA
–0.3
0.35 * VCCI 0.65 * VCCI
3.6
0.45
VCCI – 0.45 16 16
74
91
10
Applicable to Advanced I/O Banks
2 mA
–0.3
0.35 * VCCI 0.65 * VCCI
3.6
0.45
VCCI – 0.45
2
11
9
10
4 mA
–0.3
0.35 * VCCI 0.65 * VCCI
3.6
0.45
VCCI – 0.45
4
22
17
10
6 mA
–0.3
0.35 * VCCI 0.65 * VCCI
3.6
0.45
VCCI – 0.45
6
44
35
10
8 mA
–0.3
0.35 * VCCI 0.65 * VCCI
3.6
0.45
VCCI – 0.45
8
51
45
10
12 mA
–0.3
0.35 * VCCI 0.65 * VCCI
3.6
0.45
VCCI – 0.45 12 12
74
91
10
16 mA
–0.3
0.35 * VCCI 0.65 * VCCI
3.6
0.45
VCCI – 0.45 16 16
74
91
10
Applicable to Standard I/O Banks
2 mA
–0.3
0.35 * VCCI 0.65 * VCCI
3.6
0.45
VCCI – 0.45
2
11
9
10
4 mA
–0.3
0.35 * VCCI 0.65 * VCCI
3.6
0.45
VCCI – 0.45
4
22
17
10
Notes:
1. Currents are measured at high temperature (100°C junction temperature) and maximum voltage.
2. Currents are measured at 85°C junction temperature.
3. Software default selection highlighted in gray.
Figure 2-113 AC Loading
Table 2-116 AC Waveforms, Measuring Points, and Capacitive Loads
Input LOW (V)
Measuring Point* (V)
VREF (typ.) (V)
CLOAD (pF)
01.8
0.9
–
35
Test Point
Enable Path
Data Path
35 pF
R = 1 k
R to VCCI for tLZ/tZL/tZLS
R to GND for tHZ/tZH/tZHS
35 pF for tZH/tZHS/tZL/tZLS
5 pF for tHZ/tLZ