Additional Package Parameter Guidelines

Spartan-7 FPGAs Data Sheet: DC and AC Switching Characteristics (DS189)

Document ID
DS189
Release Date
2022-10-31
Revision
1.10 English

The parameters in this section provide the necessary values for calculating timing budgets for Spartan-7 FPGA clock transmitter and receiver data-valid windows.

Table  49:   Package Skew(1)

Symbol

Description

Device

Package

Value

Units

TPKGSKEW

Package skew.(2)

XC7S6

CPGA196

44

ps

CSGA225

83

ps

FTGB196

65

ps

XC7S15

CPGA196

44

ps

CSGA225

83

ps

FTGB196

65

ps

XC7S25

CSGA225

93

ps

CSGA324

62

ps

FTGB196

83

ps

XC7S50

CSGA324

80

ps

FGGA484

110

ps

FTGB196

103

ps

XC7S75

FGGA484

117

ps

FGGA676

110

ps

XC7S100

FGGA484

117

ps

FGGA676

110

ps

XA7S6

CPGA196

44

ps

CSGA225

83

ps

XA7S15

CPGA196

44

ps

CSGA225

83

ps

XA7S25

CSGA225

93

ps

CSGA324

62

ps

XA7S50

CSGA324

80

ps

FGGA484

110

ps

XA7S75

FGGA484

117

ps

FGGA676

110

ps

XC7S100

FGGA484

117

ps

FGGA676

110

ps

Notes:

1.Package delay information is available for these device/package combinations. This information can be used to deskew the package.

2.These values represent the worst-case skew between any two SelectIO resources in the package: shortest delay to longest delay from die pad to ball.