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EP2C35A15F324C6N Datasheet(PDF) 102 Page - Altera Corporation |
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EP2C35A15F324C6N Datasheet(HTML) 102 Page - Altera Corporation |
102 / 168 page ![]() 5–12 Altera Corporation Cyclone II Device Handbook, Volume 1 February 2008 DC Characteristics for Different Pin Types Table 5–11 specifies the bus hold parameters for general I/O pins. On-Chip Termination Specifications Table 5–12 defines the specifications for internal termination resistance tolerance when using series or differential on-chip termination. Table 5–11. Bus Hold Parameters Note (1) Parameter Conditions VCCIO Level Unit 1.8 V 2.5 V 3.3 V Min Max Min Max Min Max Bus-hold low, sustaining current VIN > VIL(maximum) 30 — 50 — 70 — μA Bus-hold high, sustaining current VIN < VIL(minimum) –30 — –50 — –70 — μA Bus-hold low, overdrive current 0 V < VIN < VCCIO — 200 — 300 — 500 μA Bus-hold high, overdrive current 0 V < VIN < VCCIO — –200 — –300 — –500 μA Bus-hold trip point (2) — 0.68 1.07 0.7 1.7 0.8 2.0 V Notes to Table 5–11: (1) There is no specification for bus-hold at VCCIO = 1.5 V for the HSTL I/O standard. (2) The bus-hold trip points are based on calculated input voltages from the JEDEC standard. Table 5–12. Series On-Chip Termination Specifications Symbol Description Conditions Resistance Tolerance Commercial Max Industrial Max Extended/ Automotive Temp Max Unit 25- Ω R S Internal series termination without calibration (25- Ω setting) VCCIO = 3.3V ±30 ±30 ±40 % 50- Ω R S Internal series termination without calibration (50- Ω setting) VCCIO = 2.5V ±30 ±30 ±40 % 50- Ω RS Internal series termination without calibration (50- Ω setting) VCCIO = 1.8V ±30 (1) ±40 ±50 % Note to Table 5–12: (1) For commercial –8 devices, the tolerance is ±40%. |
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