W641GG2JB Datasheet, PDF (93/109 Pages) Winbond – 1-Gbit GDDR3 Graphics SDRAM

W641GG2JB
1-Gbit GDDR3 Graphics SDRAM
7 ELECTRICAL CHARACTERISTICS
7.1 Absolute Maximum Ratings and Operation Conditions
7.1.1 Absolute Maximum Rating
Parameter
Symbol
Power Supply Voltage
Power Supply Voltage for Output Buffer
Input Voltage
Output Voltage
Storage Temperature
Junction Temperature
Case Temperature
Short Circuit Output Current
V_DD
V_DDQ
V_IN
V_OUT
T_STG
T_J
Tcase
I_OUT
Rating
Unit
Min.
Max.
-0.5
2.5
V
-0.5
2.5
V
-0.5
2.5
V
-0.5
2.5
V
-55
+150
°C
—
+125
°C
0
+105
°C
—
50
mA
Attention: Stresses above the max. values listed here may cause permanent damage to the device. Exposure to absolute maximum
rating conditions for extended periods may affect device reliability. Maximum ratings are absolute ratings; exceeding only
one of these values may cause irreversible damage to the integrated circuit.
7.2 DC Operation Conditions
7.2.1 Recommended Power & DC Operation Conditions
7.2.1.1 Power & DC Operation Conditions (0 °C ≤ T_c ≤ 105 °C)
Parameter
Symbol
Min.
Limit Values
Typ.
Max.
Unit Note
Power Supply Voltage
Reference Voltage
Output Low Voltage
Input leakage current
CLK Input leakage current
Output leakage current
V_DD / V_DDQ
1.7
1.8
1.9
V
1,2,3
V_REF
0.69*V_DDQ
—
0.71*V_DDQ
V
4
V_OL(DC)
—
—
0.8
V
3
I_IL
–5.0
—
+5.0
μΑ
5
I_ILC
–5.0
—
+5.0
μΑ
I_OL
–5.0
—
+5.0
μΑ
5
Notes :
1. Under all conditions V_DDQ must be less than or equal to V_DD.
2. V_DDQ tracks with V_DD. AC parameters are measured with V_DD and V_DDQ tied together.
3. for 1.8 V V_DD/V_DDQ power supply.
4. V_REF is expected to equal 70% of V_DDQ for the transmitting device and to track variations in the DC level of the same. Peak-to-peak noise on V_REF
may not exceed ±2% V_REF (DC). Thus, from 70% of V_DDQ, V_REF is allowed ± 19mV for DC error and an additional ± 27mV for AC noise.
5. I_IL and I_OL are measured with ODT disabled.
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Publication Release Date: Apr, 22, 2011
Revision A01-002