EP20K300EQC240-1 Datasheet, PDF (66/117 Pages) Altera Corporation – Programmable Logic Device Family

APEX 20K Programmable Logic Device Family Data Sheet
Figure 33. Relationship between V_CCIO & V_CCINT for 3.3-V PCI Compliance
2.7
V_CCINT (V)
2.5
PCI-Compliant Region
2.3
3.0
3.1
3.3
3.6
V_CCIO (V)
Figure 34 shows the typical output drive characteristics of APEX 20K
devices with 3.3-V and 2.5-V V_CCIO. The output driver is compatible with
the 3.3-V PCI Local Bus Specification, Revision 2.2 (when VCCIO pins are
connected to 3.3 V). 5-V tolerant APEX 20K devices in the -1 speed grade
are 5-V PCI compliant over all operating conditions.
Figure 34. Output Drive Characteristics of APEX 20K Device Note (1)
90
80
70
60
Typical I_O
50
Output
Current (mA) ₄₀
30
20
10
I_OL
V_CCINT = 2.5 V
V_CCIO = 2.5 V
Room Temperature
I_OH
90
80
70
60
Typical I_O
Output
50
Current (mA) ₄₀
30
20
10
I_OL
V_CCINT = 2.5 V
V_CCIO = 3.3 V
Room Temperature
I_OH
1
2
3
V_O Output Voltage (V)
1
2
3
V_O Output Voltage (V)
Note to Figure 34:
(1) These are transient (AC) currents.
66
Altera Corporation