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CY7C1648KV18 Datasheet(PDF) 21 Page - Cypress Semiconductor

No. de pieza CY7C1648KV18
Descripción Electrónicos  144-Mbit DDR II SRAM Two-Word Burst Architecture (2.0 Cycle Read Latency)
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Fabricante Electrónico  CYPRESS [Cypress Semiconductor]
Página de inicio  http://www.cypress.com
Logo CYPRESS - Cypress Semiconductor

CY7C1648KV18 Datasheet(HTML) 21 Page - Cypress Semiconductor

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Document Number: 001-44061 Rev. *L
Page 21 of 29
CY7C1648KV18
CY7C1650KV18
AC Electrical Characteristics
Over the Operating Range
Parameter [26]
Description
Test Conditions
Min
Typ
Max
Unit
VIH
Input high voltage
VREF + 0.2
VDDQ + 0.24
V
VIL
Input low voltage
–0.24
VREF – 0.2
V
Capacitance
Parameter [27]
Description
Test Conditions
Max
Unit
CIN
Input capacitance
TA = 25 C, f = 1 MHz, VDD = 1.8 V, VDDQ = 1.5 V
4
pF
CO
Output capacitance
4pF
Thermal Resistance
Parameter [27]
Description
Test Conditions
165-ballFBGA
Package
Unit
JA (0 m/s)
Thermal resistance
(junction to ambient)
Socketed on a 170 × 220 × 2.35 mm, eight-layer printed
circuit board
12.23
°C/W
JA (1 m/s)
11.17
°C/W
JA (3 m/s)
10.42
°C/W
JB
Thermal resistance
(junction to board)
9.34
°C/W
JC
Thermal resistance
(junction to case)
2.10
°C/W
AC Test Loads and Waveforms
Figure 5. AC Test Loads and Waveforms
1.25 V
0.25 V
R = 50
5pF
INCLUDING
JIG AND
SCOPE
ALL INPUT PULSES
Device
RL = 50 
Z0 = 50 
VREF = 0.75 V
VREF = 0.75 V
[28]
0.75 V
Under
Test
0.75 V
Device
Under
Test
OUTPUT
0.75 V
VREF
VREF
OUTPUT
ZQ
ZQ
(a)
Slew Rate = 2 V/ns
RQ =
250
(b)
RQ =
250
Notes
26. Overshoot: VIH(AC) < VDDQ + 0.3 V (Pulse width less than tCYC/2), Undershoot: VIL(AC) > 0.3 V (Pulse width less than tCYC/2).
27. Tested initially and after any design or process change that may affect these parameters.
28. Unless otherwise noted, test conditions assume signal transition time of 2 V/ns, timing reference levels of 0.75 V, VREF = 0.75 V, RQ = 250 , VDDQ = 1.5 V, input
pulse levels of 0.25 V to 1.25 V, and output loading of the specified IOL/IOH and load capacitance shown in (a) of Figure 5.


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