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EP3C120 डेटा पत्रक PDF( Datasheet डाउनलोड )


डेटा पत्रक - (EP3C25 / EP3C120) Cyclone III FPGA Family - Altera

भाग संख्या EP3C120
समारोह (EP3C25 / EP3C120) Cyclone III FPGA Family
मैन्युफैक्चरर्स Altera 
लोगो Altera लोगो 
पूर्व दर्शन
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<?=EP3C120?> डेटा पत्रक पीडीएफ

EP3C120 pdf
Cyclone III FPGA Family
Configuration
Twrwawn.DsaittaiSohenet4U.com
Current Issue
Cyclone III EP3C25 ES Revision B and C and EP3C120 ES Revision A
devices might exhibit a momentary current surge from the VCCINT supply
after configuration. If your system’s VCCINT supply does not provide this
current, the Cyclone III device might not transition into user mode as
intended. This issue will be fixed in all production devices. While the size
of the current surge is dependent on your design and on Quartus II
placement and routing, the following currents are maximums for each
device.
Table 2. Transition Current
Device
EP3C25
EP3C120
Peak Current from VCCINT Supply
During Transition
600mA
3A
If you use JTAG for initialization, the duration of the current surge is a
maximum of 74 TCK clock periods. If you use the CLKUSR pin for
initialization, the duration of the current surge is a maximum of 74
CLKUSR clock periods. Otherwise, the duration of the current surge is a
maximum of 15μs. The fastest rise time within the surge is 150ns.
Workaround
To ensure VCCINT voltage level stability during the transition from
configuration mode to user mode, the system needs to supply the peak
transition current. Table 3 lists the maximum VCCINT supply impedance
allowed to meet the current surge while maintaining voltage level
stability. Additionally, Table 3 lists typical capacitors, along with a
voltage regulator, that can produce a VCCINT supply impedance that is at
or lower than the maximum.
Table 3. VCCINT Supply Impedance and Typical Capacitors (Part 1 of 2)
Device
Maximum VCCINT Supply
Impedance (1), (2)
Typical VCCINT Capacitor (3)
EP3C25
0.25 Ω
100 μF low ESR tantalum and
10 μF ceramic
2
Preliminary
Altera Corporation

विन्यास 4 पेज
डाउनलोड[ EP3C120 Datasheet.PDF ]


शेयर लिंक


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