Datasheet

T
T
T
S
S
S
3
3
3
2
2
2
M
M
M
L
L
L
D
D
D
6
6
6
4
4
4
V
V
V
5
5
5
F
F
F
184PIN DDR500 Unbuffered DIMM
256MB With 32Mx8 CL3
Transcend Information Inc.
6
DC CHARACTERISTICS
(Recommended operating condition unless otherwise noted, VDD=2.7V TA = 10°C)
Parameter Symbol Max. Unit Note
Operating current - One bank Active-Precharge; tRC=tRCmin;
DQ, DM and DQS inputs changing twice per clock cycle;
Address and control inputs changing once per clock cycle
IDD0 840
mA
Operating current - One bank operation; One bank open, Burst=4;
Reads refer to the following page for detailed test condition.
IDD1
1040 mA
Percharge power-down standby current; All banks idle; power-down mode;
CKE = <VIL(max); VIN = VREF for DQ,DQS and DM
IDD2P
35 mA
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
240 mA
Active power - down standby current; one bank active; power-down mode;
CKE<= VIL (max); VIN = VREF for DQ, DQS and DM
IDD3P 440 mA
Active standby current; CS# >= VIH(min); CKE>=VIH(min);
one bank active; active - precharge; tRC=tRASmax;
DQ, DQS and DM inputs changing twice per clock cycle;
address and other control inputs changing once per clock cycle
IDD3N
600 mA
Operating current - burst read; Burst length = 2; reads; continuous burst;
One bank active; address and control inputs changing once per clock cycle;
50% of data changing at every burst; lout = 0 mA
IDD4R 1480 mA
Operating current - burst write; Burst length = 2; writes; continuous burst;
One bank active address and control inputs changing once per clock cycle;
DQ, DM and DQS inputs changing twice per clock cycle,
50% of input data changing at every burst
IDD4W
1760 mA
Auto refresh current; tRC = tRFC(min),
10*tCK for DDR500 at 250MHZ; distributed refresh
IDD5 1600 mA
Self refresh current; CKE <= 0.2V; External clock should be on;
IDD6
24 mA
Operating current - Four bank operation; Four bank interleaving with BL=4
-Refer to the following page for detailed test condition
IDD7
2800 mA
Note: 1. Module IDD was calculated on the basis of component IDD and can be differently measured according to DQ
loading capacitor.