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EP4CE55 数据表(PDF) 13 Page - Altera Corporation |
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EP4CE55 数据表(HTML) 13 Page - Altera Corporation |
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13 / 42 page ![]() Chapter 1: Cyclone IV Device Datasheet 1–13 Operating Conditions May 2013 Altera Corporation Cyclone IV Device Handbook, Volume 3 Table 1–16. Single -Ended SSTL and HSTL I/O Reference Voltage Specifications for Cyclone IV Devices (1) I/O Standard VCCIO (V) VREF (V) VTT (V) (2) Min Typ Max Min Typ Max Min Typ Max SSTL -2 Class I, II 2.375 2.5 2.625 1.19 1.25 1.31 VREF – 0.04 VREF VREF + 0.04 SSTL -18 Class I, II 1.7 1.8 1.9 0.833 0.9 0.969 VREF – 0.04 VREF VREF + 0.04 HSTL -18 Class I, II 1.71 1.8 1.89 0.85 0.9 0.95 0.85 0.9 0.95 HSTL -15 Class I, II 1.425 1.5 1.575 0.71 0.75 0.79 0.71 0.75 0.79 HSTL -12 Class I, II 1.14 1.2 1.26 0.48 x VCCIO (3) 0.5 x VCCIO (3) 0.52 x VCCIO (3) — 0.5 x VCCIO — 0.47 x VCCIO (4) 0.5 x VCCIO (4) 0.53 x VCCIO (4) Notes to Table 1–16: (1) For an explanation of terms used in Table 1–16, refer to “Glossary” on page 1–37. (2) VTT of the transmitting device must track VREF of the receiving device. (3) Value shown refers to DC input reference voltage, VREF(DC). (4) Value shown refers to AC input reference voltage, VREF(AC). Table 1–17. Single -Ended SSTL and HSTL I/O Standards Signal Specifications for Cyclone IV Devices I/O Standard VIL(DC) (V) VIH(DC) (V) VIL(AC) (V) VIH(AC) (V) VOL (V) VOH (V) IOL (mA) IOH (mA) Min Max Min Max Min Max Min Max Max Min SSTL -2 Class I — VREF – 0.18 VREF + 0.18 —— VREF – 0.35 VREF + 0.35 — VTT – 0.57 VTT + 0.57 8.1 –8.1 SSTL -2 Class II — VREF – 0.18 VREF + 0.18 —— VREF – 0.35 VREF + 0.35 — VTT – 0.76 VTT + 0.76 16.4 –16.4 SSTL -18 Class I — VREF – 0.125 VREF + 0.125 —— VREF – 0.25 VREF + 0.25 — VTT – 0.475 VTT + 0.475 6.7 –6.7 SSTL -18 Class II — VREF – 0.125 VREF + 0.125 —— VREF – 0.25 VREF + 0.25 —0.28 VCCIO – 0.28 13.4 –13.4 HSTL -18 Class I — VREF – 0.1 VREF + 0.1 —— VREF – 0.2 VREF + 0.2 —0.4 VCCIO – 0.4 8–8 HSTL -18 Class II — VREF – 0.1 VREF + 0.1 —— VREF – 0.2 VREF + 0.2 —0.4 VCCIO – 0.4 16 –16 HSTL -15 Class I — VREF – 0.1 VREF + 0.1 —— VREF – 0.2 VREF + 0.2 —0.4 VCCIO – 0.4 8–8 HSTL -15 Class II — VREF – 0.1 VREF + 0.1 —— VREF – 0.2 VREF + 0.2 —0.4 VCCIO – 0.4 16 –16 HSTL -12 Class I –0.15 VREF – 0.08 VREF + 0.08 VCCIO + 0.15 –0.24 VREF – 0.15 VREF + 0.15 VCCIO + 0.24 0.25 × VCCIO 0.75 × VCCIO 8–8 HSTL -12 Class II –0.15 VREF – 0.08 VREF + 0.08 VCCIO + 0.15 –0.24 VREF – 0.15 VREF + 0.15 VCCIO + 0.24 0.25 × VCCIO 0.75 × VCCIO 14 –14 |
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