Internet Data Sheet
HY[B/I]18T256[40/80/16]0B[C/F](L)
256-Mbit Double-Data-Rate-Two SDRAM
Parameter
Symbol Note
1)2)3)4)5
Self-Refresh Current
IDD6
)6)
CKE ≤ 0.2 V; external clock off, CK and CK at 0 V; Other control and address inputs are floating, Data bus
inputs are floating.
1)2)3)4)5
)6)7)
Operating Bank Interleave Read Current
1. All banks interleaving reads, IOUT = 0 mA; BL = 4, CL = CL(IDD), AL = tRCD(IDD) -1 × tCK(IDD); tCK = tCK(IDD)
IDD7
,
t
RC = tRC(IDD), tRRD = tRRD(IDD); CKE is HIGH, CS is HIGH between valid commands. Address bus inputs
are stable during deselects; Data bus is switching.
2. Timing pattern:
DDR2-400-333: A0 RA0 A1 RA1 A2 RA2 A3 RA3 D D D (11 clocks)
DDR2-533-333: A0 RA0 D A1 RA1 D A2 RA2 D A3 RA3 D D D D (15 clocks)
DDR2-667-444: A0 RA0 D D A1 RA1 D D A2 RA2 D D A3 RA3 D D D D D (19 clocks)
DDR2-667-555: A0 RA0 D D A1 RA1 D D A2 RA2 D D A3 RA3 D D D D D D (20 clocks)
DDR2-800-555: A0 RA0 D D D A1 RA1 D D D A2 RA2 D D D A3 RA3 D D D D D(22 clocks)
DDR2-800-666: A0 RA0 D D D A1 RA1 D D D A2 RA2 D D D A3 RA3 D D D D D D(23 clocks)
1)
2)
3)
VDDQ = 1.8 V ± 0.1 V; VDD = 1.8 V ± 0.1 V
I
I
DD specifications are tested after the device is properly initialized.
DD parameter are specified with ODT disabled.
4) Data Bus consists of DQ, DM, DQS, DQS, RDQS, RDQS, LDQS, LDQS, UDQS and UDQS.
5) Definitions for IDD: see Table 46
6) Timing parameter minimum and maximum values for IDD current measurements are defined in chapter 7..
7) A = Activate, RA = Read with Auto-Precharge, D=DESELECT
TABLE 46
Definition for IDD
Parameter
Description
LOW
defined as VIN ≤ VIL(ac).MAX
HIGH
defined as VIN ≥ VIH(ac).MIN
STABLE
FLOATING
SWITCHING
defined as inputs are stable at a HIGH or LOW level
defined as inputs are VREF = VDDQ / 2
defined as: Inputs are changing between high and low every other clock (once per two clocks) for address
and control signals, and inputs changing between high and low every other clock (once per clock) for DQ
signals not including mask or strobes
Rev. 1.11, 2007-07
41
11172006-LBIU-F1TN
QIMONDA [ QIMONDA AG ]
