EP2A15 Datasheet, PDF (74/99 Pages) Altera Corporation – Programmable Logic Device Family

APEX II Programmable Logic Device Family Data Sheet
Table 40. CTT I/O Specifications
Symbol
V_CCIO
V_TT/V_REF
V_IH
V_IL
I_I
V_OH
V_OL
I_O
Parameter
Output supply voltage
Termination and input
reference voltage
High-level input voltage
Low-level input voltage
Input pin leakage current
High-level output voltage
Low-level output voltage
Output leakage current
(when output is high Z)
Conditions
0 < V_IN < V_CCIO
I_OH = –8 mA
I_OL = 8 mA
GND ð V_OUT ð
V_CCIO
Minimum
3.0
1.35
V_REF + 0.2
–10
V_REF + 0.4
–10
Typical
3.3
1.5
Maximum
3.6
1.65
V_REF – 0.2
10
V_REF – 0.4
10
Units
V
V
V
V
µA
V
V
µA
Table 41. Bus Hold Parameters
Parameter Conditions
1.5 V
V_CCIO Level
1.8 V
2.5 V
3.3 V
Units
Min Max Min Max Min Max Min Max
Low sustaining V_IN > V_IL
current
(maximum)
30
50
70
µA
High sustaining V_IN < V_IH
current
(minimum)
–30
–50
–70
µA
Low overdrive
current
High overdrive
current
0 V < V_IN <
V_CCIO
0 V < V_IN <
V_CCIO
200
–200
300
–300
500 µA
–500 µA
Notes to Tables 20 – 41:
(1) See the Operating Requirements for Altera Devices Data Sheet.
(2) Conditions beyond those listed in Table 20 may cause permanent damage to a device. Additionally, device
operation at the absolute maximum ratings for extended periods of time may have adverse affects on the device.
(3) Minimum DC input is –0.5 V. During transitions, the inputs may undershoot to - 2 V or overshoot to 4.6 V for input
currents less than 100 mA and periods shorter than 20 ns.
(4) Maximum V_CC rise time is 100 ms, and V_CC must rise monotonically.
(5) V_CCIO maximum and minimum conditions for LVPECL, LVDS, RapidIO, and PCML are shown in parentheses.
(6) All pins, including dedicated inputs, clock, I/O, and JTAG pins, may be driven before V_CCINT and V_CCIO are
powered.
(7) Typical values are for T_A = 25° C, V_CCINT = 1.5 V, and V_CCIO = 1.5 V, 1.8 V, 2.5 V, and 3.3 V.
(8) This value is specified for normal device operation. The value may vary during power-up.
(9) Pin pull-up resistance values will lower if an external source drives the pin higher than V_CCIO.
(10) Drive strength is programmable according to values in Table 9 on page 48.
(11) V_REF specifies the center point of the switching range.
74
Altera Corporation