HYS[64/72]D[16/32/128]3xxHU–[5/6]–C
Unbuffered DDR SDRAM Modules
Electrical Characteristics
Data Sheet 20 Rev. 1.1, 2005-05
07192004-EH0E-I4S5
3 Electrical Characteristics
3.1 Operating ConditionsIDD Current Conditions and Specification
Table 12 IDD Conditions
Parameter Symbol
Operating Current 0
one bank; active/ precharge; DQ, DM, and DQS inputs changing once per clock cycle;
address and control inputs changing once every two clock cycles.
IDD0
Operating Current 1
one bank; active/read/precharge; Burst Length = 4; see component data sheet.
IDD1
Precharge Power-Down Standby Current
all banks idle; power-down mode; CKE ≤ VIL,MAX
IDD2P
Precharge Floating Standby Current
CS ≥ VIH,,MIN, all banks idle; CKE ≥ VIH,MIN;
address and other control inputs changing once per clock cycle; VIN = VREF for DQ, DQS and DM.
IDD2F
Precharge Quiet Standby Current
CS ≥ VIHMIN, all banks idle; CKE ≥VIH,MIN; VIN = VREF for DQ, DQS and DM;
address and other control inputs stable at ≥ VIH,MIN or ≤ VIL,MAX.
IDD2Q
Active Power-Down Standby Current
one bank active; power-down mode; CKE ≤ VILMAX; VIN = VREF for DQ, DQS and DM.
IDD3P
Active Standby Current
one bank active; CS ≥ VIH,MIN; CKE ≥ VIH,MIN; tRC =tRAS,MAX;
DQ, DM and DQS inputs changing twice per clock cycle;
address and control inputs changing once per clock cycle.
IDD3N
Operating Current Read
one bank active; Burst Length = 2; reads; continuous burst;
address and control inputs changing once per clock cycle;
50% of data outputs changing on every clock edge;
CL = 2 for DDR266(A), CL = 3 for DDR333 and DDR400B; IOUT =0mA
IDD4R
Operating Current Write
one bank active; Burst Length = 2; writes; continuous burst;
address and control inputs changing once per clock cycle;
50% of data outputs changing on every clock edge;
CL = 2 for DDR266(A), CL = 3 for DDR333 and DDR400B
IDD4W
Auto-Refresh Current
tRC = tRFCMIN, burst refresh
IDD5
Self-Refresh Current
CKE ≤ 0.2 V; external clock on
IDD6
Operating Current 7
four bank interleaving with Burst Length = 4; see component data sheet.
IDD7