EP4CE15E22C8

Manufacturer Part NumberEP4CE15E22C8
DescriptionIC CYCLONE IV FPGA 15K 144EQFP
ManufacturerAltera Corporation
SeriesCYCLONE® IV E
EP4CE15E22C8 datasheets

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Specifications of EP4CE15E22C8

Number Of Logic Elements/cells15408Number Of Labs/clbs963
Total Ram Bits516096Number Of I /o81
Number Of Gates-Voltage - Supply1.15 V ~ 1.25 V
Mounting TypeSurface MountOperating Temperature0°C ~ 85°C
Package / Case144-LQFP Exposed PadLead Free StatusContains lead
Rohs StatusRoHS non-compliant  
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1–10
Example 1–1
3.0 V to 85°C at 3.15 V.
Example 1–1. Impedance Change
R
= (3.15 – 3) × 1000 × –0.026 = –3.83
V
R
= (85 – 25) × 0.262 = 15.72
T
Because R
is negative,
V
MF
= 1 / (3.83/100 + 1) = 0.963
V
Because R
is positive,
T
MF
= 15.72/100 + 1 = 1.157
T
MF = 0.963 × 1.157 = 1.114
= 50 × 1.114 = 55.71 
R
final
Pin Capacitance
Table 1–11
lists the pin capacitance for Cyclone IV devices.
Table 1–11. Pin Capacitance for Cyclone IV Devices —Preliminary
Symbol
C
Input capacitance on top and bottom I/O pins
IOTB
C
Input capacitance on right I/O pins
IOLR
C
Input capacitance on right I/O pins with dedicated LVDS output
LVDSLR
C
Input capacitance on right dual
VREFLR
(1)
V
or user I/O pin
REF
C
Input capacitance on top and bottom dual
VREFTB
(1)
used as V
or user I/O pin
REF
C
Input capacitance on top and bottom dedicated clock input pins
CLKTB
C
Input capacitance on right dedicated clock input pins
CLKLR
Notes to
Table
1–11:
(1) When you use the VREF pin as a regular input or output, you can expect a reduced performance of toggle rate and t
capacitance.
(2) C
for the EP4CE22 device is 30 pF.
VREFTB
Cyclone IV Device Handbook,
Volume 3
shows how to calculate the change of 50-I/O impedance from 25°C at
Parameter
- purpose VREF pin when used as
- purpose VREF pin when
Chapter 1: Cyclone IV Device Datasheet
Operating Conditions
Typical –
Typical –
Typical –
Quad Flat
Quad Flat
Fineline
Unit
Pack
No Leads
BGA
(QFP)
(QFN)
(FBGA)
7
7
6
pF
7
7
5
pF
8
8
7
pF
21
21
21
pF
(2)
23
23
23
pF
7
7
6
pF
6
6
5
pF
because of higher pin
CO
November 2011 Altera Corporation

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