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EP2C35A15F324C6N Datasheet(PDF) 99 Page - Altera Corporation |
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EP2C35A15F324C6N Datasheet(HTML) 99 Page - Altera Corporation |
99 / 168 page Altera Corporation 5–9 February 2008 Cyclone II Device Handbook, Volume 1 DC Characteristics and Timing Specifications Table 5–8 shows the recommended operating conditions for user I/O pins with differential I/O standards. Table 5–8. Recommended Operating Conditions for User I/O Pins Using Differential Signal I/O Standards I/O Standard VCCIO (V) VID (V) (1) VICM (V) VIL (V) VIH (V) Min Typ Max Min Typ Max Min Typ Max Min Max Min Max LVDS 2.375 2.5 2.625 0.1 — 0.65 0.1 — 2.0 — — — — Mini-LVDS (2) 2.375 2.5 2.625 — — ———— — — — — RSDS (2) 2.375 2.5 2.625 — — ———— — — — — LVPECL (3) (6) 3.135 3.3 3.465 0.1 0.6 0.95 — — — 0 2.2 2.1 2.88 Differential 1.5-V HSTL class I and II (4) 1.425 1.5 1.575 0.2 — VCCIO + 0.6 0.68 — 0.9 — VREF – 0.20 VREF + 0.20 — Differential 1.8-V HSTL class I and II (4) 1.71 1.8 1.89 — — ———— — VREF – 0.20 VREF + 0.20 — Differential SSTL-2 class I and II (5) 2.375 2.5 2.625 0.36 — VCCIO + 0.6 0.5 × VCCIO – 0.2 0.5 × VCCIO 0.5 × VCCIO + 0.2 —VREF – 0.35 VREF + 0.35 — Differential SSTL-18 class I and II (5) 1.7 1.8 1.9 0.25 — VCCIO + 0.6 0.5 × VCCIO – 0.2 0.5 × VCCIO 0.5 × VCCIO + 0.2 —VREF – 0.25 VREF + 0.25 — Notes to Table 5–8: (1) Refer to the High-Speed Differential Interfaces in Cyclone II Devices chapter of the Cyclone II Device Handbook for measurement conditions on VID. (2) The RSDS and mini-LVDS I/O standards are only supported on output pins. (3) The LVPECL I/O standard is only supported on clock input pins. This I/O standard is not supported on output pins. (4) The differential 1.8-V and 1.5-V HSTL I/O standards are only supported on clock input pins and PLL output clock pins. (5) The differential SSTL-18 and SSTL-2 I/O standards are only supported on clock input pins and PLL output clock pins. (6) The LVPECL clock inputs are powered by VCCINT and support all VCCIO settings. However, it is recommended to connect VCCIO to typical value of 3.3V. |
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