W9751G6IB-25 Winbond Electronics, W9751G6IB-25 Datasheet - Page 65

• Manufacturer Part Number: W9751G6IB-25
• Description: IC DDR2-800 SDRAM 512MB 84-WBGA
• Manufacturer: Winbond Electronics

Specifications of W9751G6IB-25

• Format - Memory: RAM
• Memory Type: DDR2 SDRAM
• Memory Size: 512M (32Mx16)
• Speed: 2.5ns
• Interface: Parallel
• Voltage - Supply: 1.7 V ~ 1.9 V
• Operating Temperature: 0°C ~ 85°C
• Package / Case: 84-WBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

AC differential input voltage
AC differential cross point input voltage
AC differential cross point output voltage
9.12 AC Input Test Conditions
Notes:
1. Input waveform timing is referenced to the input signal crossing through the VIH/IL(ac) level applied to the device under test.
2. The input signal minimum slew rate is to be maintained over the range from VREF to VIH(ac) min for rising edges and the
3. AC timings are referenced with input waveforms switching from VIL(ac) to VIH(ac) on the positive transitions and VIH(ac) to
9.13 Differential Input/Output AC Logic Levels
(0 ℃ ≤ T
Notes:
1. VID (ac) specifies the input differential voltage |VTR -VCP | required for switching, where VTR is the true input signal (such
2. The typical value of VIX (ac) is expected to be about 0.5 x VDDQ of the transmitting device and VIX (ac) is expected to track
3. The typical value of VOX (ac) is expected to be about 0.5 x VDDQ of the transmitting device and VOX (ac) is expected to
(0 ℃ ≤ T
Input reference voltage
Input signal maximum peak to peak swing
Input signal minimum slew rate
range from VREF to VIL(ac) max for falling edges as shown in the below figure.
VIL(ac) on the negative transitions .
as CLK, LDQS or UDQS) and VCP is the complementary input signal (such as CLK , LDQS or UDQS ). The minimum
value is equal to VIH (ac) - VIL (ac).
variations in VDDQ. VIX (ac) indicates the voltage at which differential input signals must cross.
track variations in VDDQ. VOX (ac) indicates the voltage at which differential output signals must cross.
V
Falling Slew =
SWING(MAX)
CASE
CASE
PARAMETER
△TF
≤ 85 ℃ for 25F/-25/-3, V
≤ 85 ℃ for 25F/-25/-3, V
Figure 28—AC input test signal and Differential signal levels waveform
V
REF -
CONDITION
△TF
V
IL(ac)
max
DD
Rising Slew =
DD
, V
, V
△TR
DDQ
DDQ
V
V
V
= 1.8V ± 0.1V)
V
SYM.
OX (ac)
= 1.8V ± 0.1V)
ID (ac)
IX (ac)
IH(ac)
△TR
min - V
V
V
V
V
V
V
V
DDQ
IL(dc)
IL(ac)
IH(ac)
IH(dc)
REF
SS
V
SLEW
V
REF
max
max
REF
SWING(MAX)
min
min
SYMBOL
0.5 x VDDQ - 0.175
0.5 x VDDQ - 0.125
- 65 -
MIN.
0.5
V
V
TR
CP
Publication Release Date: Oct. 23, 2009
0.5 x VDDQ + 0.175
0.5 x VDDQ + 0.125
0.5 x V
VALUE
VDDQ + 0.6
1.0
1.0
V
V
V
MAX.
DDQ
SSQ
ID
DDQ
W9751G6IB
V
IX
or V
Crossing point
UNIT
V/nS
OX
V
V
UNIT
V
V
V
Revision A06
NOTES
NOTES
2, 3
1
1
1
2
3