SmartFusion DC and Switching Characteristics
2-34 Revision 10
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 a push-pull output buffer.
Table 2-47 • Minimum and Maximum DC Input and Output Levels
Applicable to FPGA I/O Banks
1.8 V
LVCMOS VIL VIH VOL VOH I
OL
I
OH
I
OSL
I
OSH
I
IL
I
IH
Drive
Strength
Min.
V
Max.
V
Min.
V
Max.
V
Max.
V
Min.
VmAmA
Max.
mA
1
Max.
mA
1
µA
2
µA
2
2 mA –0.3 0.35 *
VCCxxxxIOBx
0.65 *
VCCxxxxIOBx
1.9 0.45 VCCxxxxIOBx
– 0.45
2 2 11 9 15 15
4 mA –0.3 0.35 *
VCCxxxxIOBx
0.65 *
VCCxxxxIOBx
1.9 0.45 VCCxxxxIOBx
– 0.45
4 4 22 17 15 15
6 mA –0.3 0.35 *
VCCxxxxIOBx
0.65 *
VCCxxxxIOBx
1.9 0.45 VCCxxxxIOBx
– 0.45
6 6 44 35 15 15
8 mA –0.3 0.35 *
VCCxxxxIOBx
0.65 *
VCCxxxxIOBx
1.9 0.45 VCCxxxxIOBx
– 0.45
8 8 51 45 15 15
12 mA –0.3 0.35 *
VCCxxxxIOBx
0.65 *
VCCxxxxIOBx
1.9 0.45 VCCxxxxIOBx
– 0.45
12 12 74 91 15 15
16 mA –0.3 0.35 *
VCCxxxxIOBx
0.65 *
VCCxxxxIOBx
1.9 0.45 VCCxxxxIOBx
– 0.45
16 16 74 91 15 15
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.
Table 2-48 • Minimum and Maximum DC Input and Output Levels
Applicable to MSS I/O Banks
1.8 V
LVCMOS VIL VIH VOL VOH I
OL
I
OH
I
OSL
I
OSH
I
IL
I
IH
Drive
Strength
Min.
V
Max.
V
Min.
V
Max.
V
Max.
V
Min.
VmAmA
Max.
mA
1
Max.
mA
1
µA
2
µA
2
4 mA –0.3 0.35 *
VCCxxxxIOBx
0.65 *
VCCxxxxIOBx
3.6 0.45 VCCxxxxIOBx
– 0.45
4 4 22 17 15 15
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 2-8 • AC Loading
Table 2-49 • AC Waveforms, Measuring Points, and Capacitive Loads
Input Low (V) Input High (V) Measuring Point* (V) V
REF
(typ.) (V) C
LOAD
(pF)
0 1.8 0.9 – 35
* Measuring point = V
trip.
See Table 2-22 on page 2-24 for a complete table of trip points.
Test Point
Test Point
Enable Path
Datapath
35 pF
R = 1 K
R to GND for t
HZ
/ t
ZH
/ t
ZHS
R to VCCxxxxIOBx for t
LZ
/ t
ZL
/ t
ZLS
35 pF for t
ZH
/ t
ZHS
/ t
ZL
/ t
ZLS
35 pF for t
HZ
/ t
LZ