HYB18TC256160AF_1 Datasheet, PDF (20/55 Pages) Qimonda AG – 256-Mbit Double-Data-Rate-Two SDRAM DDR2 SDRAM

Internet Data Sheet
HYB18TC256160AF
256-Mbit Double-Data-Rate-Two SDRAM
5
Electrical Characteristics
This chapter describes the Electrical Characteristics.
5.1
Absolute Maximum Ratings
Caution is needed not to exceed absolute maximum ratings of the DRAM device listed in Table 17 at any time.
Symbol
Parameter
Rating
TABLE 17
Absolute Maximum Ratings
Unit Note
Min. Max.
V_DD
Voltage on V_DD pin relative to V_SS
–1.0 +2.3
V
1)
V_DDQ
Voltage on V_DDQ pin relative to V_SS
–0.5 +2.3
V
1)2)
V_DDL
Voltage on V_DDL pin relative to V_SS
–0.5 +2.3
V
1)2)
V_IN, V_OUT
Voltage on any pin relative to V_SS
–0.5 +2.3
V
1)
T_STG
Storage Temperature
–55
+100
°C
1)2)
1) When V_DD and V_DDQ and V_DDL are less than 500 mV; V_REF may be equal to or less than 300 mV.
2) Storage Temperature is the case surface temperature on the center/top side of the DRAM.
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.
Symbol
Parameter
TABLE 18
DRAM Component Operating Temperature Range
Rating
Unit
Notes
Min.
Max.
T_OPER
Operating Temperature
0
95
°C
1)2)3)4)
1) Operating Temperature is the case surface temperature on the center / top side of the DRAM.
2) The operating temperature range are the temperatures where all DRAM specification will be supported. During operation, the DRAM case
temperature must be maintained between 0 - 95 °C under all other specification parameters.
3) Above 85 °C the Auto-Refresh command interval has to be reduced to t_REFI= 3.9 µs
4) When operating this product in the 85 °C to 95 °C TCASE temperature range, the High Temperature Self Refresh has to be enabled by
setting EMR(2) bit A7 to “1”. When the High Temperature Self Refresh is enabled there is an increase of I_DD6 by approximately 50%
Rev. 1.20, 2007-04
20
03062006-H3V1-XJT4