256Mb: x4, x8, x16 SDRAM
Electrical Specifications – IDD Parameters
Electrical Specifications – IDD Parameters
Table 10: IDD Specifications and Conditions (x4, x8, x16) Revision D
Notes 1–5 apply to all parameters and conditions; VDD/VDDQ = +3.3V ±0.3V
Max
-7E
Parameter/Condition
Symbol
-6A
-75
Unit Notes
Operating current: Active mode; Burst = 2; READ or WRITE; tRC
= tRC (MIN)
IDD1
135
135
125
mA 6, 7, 8,
9
Standby current: Power-down mode; All banks idle; CKE =
LOW
IDD2
IDD3
IDD4
2
2
2
mA
9
Standby current: Active mode; CKE = HIGH; CS# = HIGH; All
banks active after tRCD met; No accesses in progress
40
40
40
mA 6, 8, 9,
10
Operating current: Burst mode; Page burst; READ or WRITE;
All banks active
135
135
135
mA 6, 7, 8,
9
Auto refresh current: CKE = HIGH; CS# = tRFC = tRFC (MIN)
IDD5
IDD6
IDD6
IDD7
IDD7
285
3.5
8
285
3.5
8
270
3.5
8
mA 6, 7, 8,
HIGH
9, 10,
11
tRFC = 7.813μs
mA
tRFC = 1.953μs (AT)
mA
Self refresh current: CKE ≤ 0.2V
Standard
2.5
–
2.5
1.5
2.5
1.5
mA
Low power (L)
mA
12
Table 11: IDD Specifications and Conditions (x4, x8, x16) Revision G
Notes 1–5 apply to all parameters and conditions; VDD/VDDQ = +3.3V ±0.3V
Max
Parameter/Condition
Symbol
-6A
-7E
Unit
Notes
Operating current: Active mode; Burst = 2; READ or WRITE; tRC = tRC
(MIN)
IDD1
100
100
mA
6, 7, 8,
9
Standby current: Power-down mode; All banks idle; CKE = LOW
IDD2
IDD3
2.5
35
2.5
35
mA
mA
9
Standby current: Active mode; CKE = HIGH; CS# = HIGH; All banks ac-
tive after tRCD met; No accesses in progress
6, 8, 9,
10
Operating current: Burst mode; Page burst; READ or WRITE; All
banks active
IDD4
100
100
mA
6, 7, 8,
9
t
Auto refresh current: CKE = HIGH; CS# = HIGH RFC = tRFC (MIN)
IDD5
IDD6
IDD6
IDD7
IDD7
150
4
150
4
mA
mA
mA
mA
mA
6, 7, 8,
9, 10,
11
tRFC = 7.813μs
tRFC = 1.953μs (AT)
8
8
Self refresh current: CKE ≤ 0.2V
Standard
3
3
Low power (L)
1.5
1.5
12
1. All voltages referenced to VSS.
Notes:
2. The minimum specifications are used only to indicate cycle time at which proper opera-
tion over the full temperature range is ensured; (0°C ≤ TA ≤ +70°C (commercial), –40°C ≤
TA ≤ +85°C (industrial), and –40°C ≤ TA ≤ +105°C (automotive)).
3. An initial pause of 100μs is required after power-up, followed by two AUTO REFRESH
commands, before proper device operation is ensured. (VDD and VDDQ must be powered
up simultaneously. VSS and VSSQ must be at same potential.) The two AUTO REFRESH
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256Mb_sdr.pdf - Rev. R 10/12 EN
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