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HYS64T[16/32/64]0xxxHDL–[2.5/3.7/5]–A
Small Outline DDR2 SDRAM Modules
Electrical Characteristics
Data Sheet
25
Rev. 1.1, 2005-06
02182004-HWZ1-64OM
3.4
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DD Specifications and Conditions
Table 19
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DD Measurement Conditions
1)2)3)4)5)6)
Parameter
Symbol
Operating Current 0
One bank Active - Precharge;
t
CK = tCK.MIN, tRC = tRC.MIN, tRAS = tRAS.MIN, CKE is HIGH, CS is HIGH
between valid commands. Address and control inputs are SWITCHING, Databus inputs are
SWITCHING.
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DD0
Operating Current 1
One bank Active - Read - Precharge;
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OUT = 0 mA, BL = 4, tCK = tCK.MIN, tRC = tRC.MIN, tRAS = tRAS.MIN,
t
RCD = tRCD.MIN, AL = 0, CL = CLMIN; CKE is HIGH, CS is HIGH between valid commands. Address and
control inputs are SWITCHING, Databus inputs are SWITCHING.
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DD1
Precharge Standby Current
All banks idle; CS is HIGH; CKE is HIGH;
t
CK = tCK.MIN; Other control and address inputs are
SWITCHING, Data bus inputs are SWITCHING.
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DD2N
Precharge Power-Down Current
Other control and address inputs are STABLE, Data bus inputs are FLOATING.
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DD2P
Precharge Quiet Standby Current
All banks idle; CS is HIGH; CKE is HIGH;
t
CK = tCK.MIN; Other control and address inputs are STABLE,
Data bus inputs are FLOATING.
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DD2Q
Active Standby Current
Burst Read: All banks open; Continuous burst reads; BL = 4; AL = 0, CL = CLMIN; tCK = tCK.MIN;
t
RAS = tRAS.MAX, tRP = tRP.MIN; CKE is HIGH, CS is HIGH between valid commands. Address inputs are
SWITCHING; Data Bus inputs are SWITCHING;
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OUT = 0 mA.
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DD3N
Active Power-Down Current
All banks open;
t
CK = tCK.MIN, CKE is LOW; Other control and address inputs are STABLE, Data bus
inputs are FLOATING. MRS A12 bit is set to LOW (Fast Power-down Exit);
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DD3P(0)
Active Power-Down Current
All banks open; tCK = tCK.MIN, CKE is LOW; Other control and address inputs are STABLE, Data bus
inputs are FLOATING. MRS A12 bit is set to HIGH (Slow Power-down Exit);
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DD3P(1)
Operating Current
urst Write: All banks open; Continuous burst writes; BL = 4; AL = 0, CL = CLMIN; tCK = tCK.MIN;
t
RAS = tRAS.MAX., tRP = tRP.MAX; CKE is HIGH, CS is HIGH between valid commands. Address inputs are
SWITCHING; Data Bus inputs are SWITCHING;
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DD4W
Burst Refresh Current
t
CK = tCK.MIN., Refresh command every tRFC = tRFC.MIN interval, CKE is HIGH, CS is HIGH between valid
commands, Other control and address inputs are SWITCHING, Data bus inputs are SWITCHING.
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DD5B
Distributed Refresh Current
t
CK = tCK.MIN., Refresh command every tRFC = tREFI interval, CKE is LOW and CS is HIGH between valid
commands, Other control and address inputs are SWITCHING, Data bus inputs are SWITCHING.
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DD5D