EPM2210 Altera Corporation, EPM2210 Datasheet - Page 45

• Manufacturer Part Number: EPM2210
• Description: (EPMxxxx) JTAG & In-System Programmability
• Manufacturer: Altera Corporation

Altera Corporation
December 2004
Notes to
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
Table 2–7. MAX II MultiVolt I/O Support
V
CCIO
1.5
1.8
2.5
3.3
To drive inputs higher than V
However, to drive 5.0-V inputs to the device, enable the PCI clamping diode to prevent V
When V
When V
When V
When V
than expected.
MAX II devices can be 5.0-V tolerant with the use of an external resistor and the internal PCI clamp diode on the
EPM1270 and EPM2210 devices.
When V
When V
case of 5.0-V CMOS, open-drain setting with internal PCI clamp diode (available only on EPM1270 and EPM2210
devices) and external resistor is required.
(V)
Table
CCIO
CCIO
CCIO
CCIO
CCIO
CCIO
1.5 V
v
2–7:
= 3.3-V, a MAX II device can drive a device with 5.0-V TTL inputs but not 5.0-V CMOS inputs. In the
= 1.5-V and a 2.5-V or 3.3-V input signal feeds an input pin, higher pin leakage current is expected.
= 1.8-V, a MAX II device can drive a 1.5-V device with 1.8-V tolerant inputs.
= 2.5-V, a MAX II device can drive a 1.5-V or 1.8-V device with 2.5-V tolerant inputs.
= 3.3-V and a 2.5-V input signal feeds an input pin, the VCCIO supply current will be slightly larger
= 3.3-V, a MAX II device can drive a 1.5-V, 1.8-V, or 2.5-V device with 3.3-V tolerant inputs.
1.8 V
v
v
Connect VCCIO pins to either a 1.5-V, 1.8 V, 2.5-V, or 3.3-V power supply,
depending on the output requirements. The output levels are compatible
with systems of the same voltage as the power supply (i.e., when VCCIO
pins are connected to a 1.5-V power supply, the output levels are
compatible with 1.5-V systems). When VCCIO pins are connected to a
3.3-V power supply, the output high is 3.3 V and is compatible with 3.3-V
or 5.0-V systems.
Input Signal
CCIO
v
v
2.5 V
v
v
(2)
(5)
but less than 4.0 V including the overshoot, disable the PCI clamping diode.
Core Version a.b.c variable
v
3.3 V
v
v
v
(2)
Note (1)
Table 2–7
v
5.0 V
(6)
summarizes MAX II MultiVolt I/O support.
v
v
v
1.5 V
v
(3)
(4)
(7)
v
v
MAX II Device Handbook, Volume 1
1.8 V
v
(4)
(7)
Output Signal
v
2.5 V
v
(7)
I
from rising above 4.0 V.
MAX II Architecture
3.3 V
v
v
5.0 V
2–39
(8)