SIDE-BY-SIDE REVIEW
Compare FPGA devices
Review resource differences, package constraints and the fields that still need confirmation.
Select devices (2–4)
| Parameter / status | XC7K420T-3FFG1156EKintex-7 | XC7K420T-1FFG1156CKintex-7 |
|---|---|---|
| Logic cellsSame | 416960 logic cellsDS180 ↗ · devicep. 4, Table 6, XC7K420T row; Logic Cells columnConditionsVendor metric; not comparable to another architecture's ALMs. | 416960 logic cellsDS180 ↗ · devicep. 4, Table 6, XC7K420T row; Logic Cells columnConditionsVendor metric; not comparable to another architecture's ALMs. |
| 6-input LUTsSame | 260600 LUT6DS180 ↗ · derivedp. 4, Table 6, XC7K420T row; note 1; p. 7 CLBs, Slices, and LUTsConditions65150 slices x 4 LUT6 per slice. | 260600 LUT6DS180 ↗ · derivedp. 4, Table 6, XC7K420T row; note 1; p. 7 CLBs, Slices, and LUTsConditions65150 slices x 4 LUT6 per slice. |
| Block RAM capacitySame | 30060 KbDS180 ↗ · devicep. 4, Table 6, XC7K420T row; Block RAM Max (Kb) columnConditionsSource unit retained: Kb means kilobits, not kilobytes. | 30060 KbDS180 ↗ · devicep. 4, Table 6, XC7K420T row; Block RAM Max (Kb) columnConditionsSource unit retained: Kb means kilobits, not kilobytes. |
| 36 Kb block RAM blocksSame | 835 blocksDS180 ↗ · devicep. 4, Table 6, XC7K420T row; Block RAM 36 Kb column; note 3ConditionsEach fundamental block is 36 Kb; may be configured as two 18 Kb blocks. | 835 blocksDS180 ↗ · devicep. 4, Table 6, XC7K420T row; Block RAM 36 Kb column; note 3ConditionsEach fundamental block is 36 Kb; may be configured as two 18 Kb blocks. |
| DSP slicesSame | 1680 DSP48E1DS180 ↗ · devicep. 4, Table 6, XC7K420T row; DSP Slices column; note 2ConditionsDSP48E1 architecture; counts must not be treated as cross-vendor equivalent. | 1680 DSP48E1DS180 ↗ · devicep. 4, Table 6, XC7K420T row; DSP Slices column; note 2ConditionsDSP48E1 architecture; counts must not be treated as cross-vendor equivalent. |
| User I/O in this packageSame | 400 I/ODS180 ↗ · device-packagep. 4, Table 7, XC7K420T row, FFG1156 columnsConditionsPackage-specific user I/O. HR + HP; excludes GT serial channels. | 400 I/ODS180 ↗ · device-packagep. 4, Table 7, XC7K420T row, FFG1156 columnsConditionsPackage-specific user I/O. HR + HP; excludes GT serial channels. |
| Serial transceivers in this packageSame | 32 GTXDS180 ↗ · device-packagep. 4, Table 7, XC7K420T row, FFG1156 columns; GTX columnConditionsNumber of channels exposed in this selected device/package; not device-family maximum. | 32 GTXDS180 ↗ · device-packagep. 4, Table 7, XC7K420T row, FFG1156 columns; GTX columnConditionsNumber of channels exposed in this selected device/package; not device-family maximum. |
| Package codeSame | FFG1156UG475 ↗ · packagep. 272, Figure 4-18 titleConditionsExact package token; does not establish any full orderable MPN. | FFG1156UG475 ↗ · packagep. 272, Figure 4-18 titleConditionsExact package token; does not establish any full orderable MPN. |
| Package ball countSame | 1156 ballsUG475 ↗ · packagep. 272, Figure 4-18; note 4: actual solder ball count = 1156; Kintex p. 291 Figure 4-37 note 4Conditionsnote 4: actual solder ball count = 1156; Kintex p. 291 Figure 4-37 note 4 | 1156 ballsUG475 ↗ · packagep. 272, Figure 4-18; note 4: actual solder ball count = 1156; Kintex p. 291 Figure 4-37 note 4Conditionsnote 4: actual solder ball count = 1156; Kintex p. 291 Figure 4-37 note 4 |
| Package bodySame | 35 x 35 mmUG475 ↗ · packagep. 11, Table 1-1; p. 272, Figure 4-18, D/E dimensionsConditionsPackage body width x length; excludes PCB keep-out and component height. | 35 x 35 mmUG475 ↗ · packagep. 11, Table 1-1; p. 272, Figure 4-18, D/E dimensionsConditionsPackage body width x length; excludes PCB keep-out and component height. |
| Ball pitchSame | 1 mmUG475 ↗ · packagep. 11, Table 1-1; p. 272, Figure 4-18, e dimensionConditionsBall-to-ball pitch. | 1 mmUG475 ↗ · packagep. 11, Table 1-1; p. 272, Figure 4-18, e dimensionConditionsBall-to-ball pitch. |
| Package terminals / leads (vendor count)Unconfirmed data | Not confirmed | Not confirmed |
| Speed gradeDifferent | -3DS180 ↗ · MPNp. 16, Figure 2; Speed Grade legendConditionsRetain original ordering code -3 in the literal MPN. Datasheet grade is -3. This is not a single application clock limit. | -1DS180 ↗ · MPNp. 16, Figure 2; Speed Grade legendConditionsRetain original ordering code -1 in the literal MPN. Datasheet grade is -1. This is not a single application clock limit. |
| Junction temperature (Tj)Different | 0 to +100 °CDS182 ↗ · gradep. 3, Table 2 Recommended Operating Conditions (continued); Tj Extended (E) rowConditionsJunction temperature Tj, not ambient temperature. Apply only to a literal MPN with the corresponding grade; not a claim all grades are available. | 0 to +85 °CDS182 ↗ · gradep. 3, Table 2 Recommended Operating Conditions (continued); Tj Commercial (C) rowConditionsJunction temperature Tj, not ambient temperature. Apply only to a literal MPN with the corresponding grade; not a claim all grades are available. |
| Temperature gradeDifferent | Extended (E)DS182 ↗ · gradep. 3, Table 2 Recommended Operating Conditions (continued); Tj Extended (E) row | Commercial (C)DS182 ↗ · gradep. 3, Table 2 Recommended Operating Conditions (continued); Tj Commercial (C) row |
| Core voltage conditionsUnconfirmed data | Not confirmedConditionsNot verified in this review. | Not confirmedConditionsNot verified in this review. |
| Maximum application clockUnconfirmed data | Not confirmedConditionsDepends on the application, implementation and operating conditions. | Not confirmedConditionsDepends on the application, implementation and operating conditions. |
| Application powerUnconfirmed data | Not confirmedConditionsDepends on the application, implementation and operating conditions. | Not confirmedConditionsDepends on the application, implementation and operating conditions. |
| Minimum junction temperatureSame | 0 °CDS182 ↗ · gradep. 3, Table 2 Recommended Operating Conditions (continued); Tj Extended (E) rowConditionsJunction temperature Tj, not ambient temperature. Apply only to a literal MPN with the corresponding grade; not a claim all grades are available. Expressed from the same reviewed junction-temperature range; not an additional measurement. | 0 °CDS182 ↗ · gradep. 3, Table 2 Recommended Operating Conditions (continued); Tj Commercial (C) rowConditionsJunction temperature Tj, not ambient temperature. Apply only to a literal MPN with the corresponding grade; not a claim all grades are available. Expressed from the same reviewed junction-temperature range; not an additional measurement. |
| Maximum junction temperatureDifferent | 100 °CDS182 ↗ · gradep. 3, Table 2 Recommended Operating Conditions (continued); Tj Extended (E) rowConditionsJunction temperature Tj, not ambient temperature. Apply only to a literal MPN with the corresponding grade; not a claim all grades are available. Expressed from the same reviewed junction-temperature range; not an additional measurement. | 85 °CDS182 ↗ · gradep. 3, Table 2 Recommended Operating Conditions (continued); Tj Commercial (C) rowConditionsJunction temperature Tj, not ambient temperature. Apply only to a literal MPN with the corresponding grade; not a claim all grades are available. Expressed from the same reviewed junction-temperature range; not an additional measurement. |
| Temperature referenceSame | TjDS182 ↗ · gradep. 3, Table 2 Recommended Operating Conditions (continued); Tj Extended (E) rowConditionsJunction temperature Tj, not ambient temperature. Apply only to a literal MPN with the corresponding grade; not a claim all grades are available. Expressed from the same reviewed junction-temperature range; not an additional measurement. | TjDS182 ↗ · gradep. 3, Table 2 Recommended Operating Conditions (continued); Tj Commercial (C) rowConditionsJunction temperature Tj, not ambient temperature. Apply only to a literal MPN with the corresponding grade; not a claim all grades are available. Expressed from the same reviewed junction-temperature range; not an additional measurement. |
| Conditional temperature operationUnconfirmed data | Not confirmed | Not confirmed |
| Minimum core voltageUnconfirmed data | Not confirmed | Not confirmed |
| Nominal core voltageUnconfirmed data | Not confirmed | Not confirmed |
| Maximum core voltageUnconfirmed data | Not confirmed | Not confirmed |
| Current lifecycleUnconfirmed data | Not confirmedConditionsNot verified in this review. | Not confirmedConditionsNot verified in this review. |
| Available stockUnconfirmed data | Not confirmedConditionsNot verified in this review. | Not confirmedConditionsNot verified in this review. |
Check pinout, bank voltages, configuration, tool support, timing, thermal design and lifecycle before changing a part. Different vendors’ logic and DSP counts need architecture-specific interpretation.