参数资料
型号: EP2C20F256I6N
厂商: ALTERA CORP
元件分类: FPGA
英文描述: FPGA, 1196 CLBS, PBGA256
封装: LEAD FREE, FBGA-256
文件页数: 168/168页
文件大小: 2206K
代理商: EP2C20F256I6N
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
2.375
2.5
2.625
————
RSDS (2)
2.375
2.5
2.625
————
LVPECL
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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