K4D261638F Datasheet, PDF (10/18 Pages) Samsung semiconductor – 128Mbit GDDR SDRAM

K4D261638F
128M GDDR SDRAM
ABSOLUTE MAXIMUM RATINGS
Parameter
Symbol
Value
Unit
Voltage on any pin relative to Vss
VIN, VOUT
-0.5 ~ 3.6
V
Voltage on VDD supply relative to Vss
VDD
-1.0 ~ 3.6
V
Voltage on VDD supply relative to Vss
VDDQ
-0.5 ~ 3.6
V
Storage temperature
TSTG
-55 ~ +150
°C
Power dissipation
PD
2.0
W
Short circuit current
IOS
50
mA
Note : Permanent device damage may occur if ABSOLUTE MAXIMUM RATINGS are exceeded.
Functional operation should be restricted to recommended operating condition.
Exposure to higher than recommended voltage for extended periods of time could affect device reliability.
POWER & DC OPERATING CONDITIONS(SSTL_2 In/Out)
Recommended operating conditions(Voltage referenced to VSS=0V, TA=0 to 65°C)
Parameter
Device Supply voltage
Symbol
Min
Typ
Max
VDD
2.375
2.50
2.625
Output Supply voltage
VDDQ
2.375
2.50
2.625
Reference voltage
VREF
0.49*VDDQ
-
0.51*VDDQ
Termination voltage
Vtt
VREF-0.04
VREF
VREF+0.04
Input logic high voltage
VIH(DC)
VREF+0.15
-
VDDQ+0.30
Input logic low voltage
VIL(DC)
-0.30
-
VREF-0.15
Output logic high voltage
Output logic low voltage
Input leakage current
Output leakage current
VOH
Vtt+0.76
-
VOL
-
-
IIL
-5
-
IOL
-5
-
-
Vtt-0.76
5
5
Unit
V
V
V
V
V
V
V
V
uA
uA
Note
1, 7
1, 7
2
3
4
5
IOH=-15.2mA
IOL=+15.2mA
6
6
Note : 1. Under all conditions VDDQ must be less than or equal to VDD.
2. VREF is expected to equal 0.50*VDDQ of the transmitting device and to track variations in the DC level of the same. Peak to
peak noise on the VREF may not exceed + 2% of the DC value. Thus, from 0.50*VDDQ, VREF is allowed + 25mV for DC error
and an additional + 25mV for AC noise.
3. Vtt of the transmitting device must track VREF of the receiving device.
4. VIH(max.)= VDDQ +1.5V for a pulse width and it can not be greater than 1/3 of the cycle rate.
5. VIL(mim.)= -1.5V for a pulse width and it can not be greater than 1/3 of the cycle rate.
6. For any pin under test input of 0V < VIN < VDD is acceptable. For all other pins that are not under test VIN=0V.
7. For the K4D261638F-TC25/2A, VDD & VDDQ = 2.8V+0.1V
- 10 -
Rev. 1.2 (Jan. 2004)