APEX20KC datasheet(63/90 Pages) ALTERA

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Altera Corporation

APEX 20KC Programmable Logic Device Data Sheet

Notes to Tables 21 through 35:

(1)

The IOH parameter refers to high-level output current.

(2)

The IOL parameter refers to low-level output current. This parameter applies to open-drain pins as well as output

pins.

(3)

VREF specifies center point of switching range.

Figure 31 shows the output drive characteristics of APEX 20KC devices.

Table 34. 3.3-V AGP I/O Specifications

Symbol

Parameter

Conditions

Minimum

Typical

Maximum

Units

VCCIO

I/O supply voltage

3.15

3.3

3.45

VREF

Reference voltage

0.39

× V

CCIO

0.41

× V

CCIO

VIH

High-level input

voltage

0.5

× V

CCIO

VCCIO + 0.5

VIL

Low-level input

voltage

0.3

× V

CCIO

VOH

High-level output

voltage

IOUT = –500 µA0.9 × VCCIO

3.6

VOL

Low-level output

voltage

IOUT = 1,500 µA0.1 × VCCIO

Input pin leakage

current

0 < VIN < VCCIO

–10

µA

Table 35. CTT I/O Specifications

Symbol

Parameter

Conditions

Minimum

Typical

Maximum

Units

VCCIO

I/O supply voltage

3.0

3.3

3.6

VTT/VREF (3)

Termination and

reference voltage

1.35

1.5

1.65

VIH

High-level input

voltage

VREF + 0.2

VIL

Low-level input

voltage

VREF – 0.2

Input pin leakage

current

0 < VIN < VCCIO

–10

µA

VOH

High-level output

voltage

IOH = –8 mA (1)

VREF + 0.4

VOL

Low-level output

voltage

IOL = 8 mA (2)

VREF – 0.4

Output leakage

current (when output

is high Z)

GND

≤ V

OUT ≤ VCCIO

–10

µA

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