MT47H32M16BT-3:A TR Micron Technology Inc, MT47H32M16BT-3:A TR Datasheet - Page 115
![IC DDR2 SDRAM 512MBIT 3NS 92FBGA](/photos/7/26/72643/557-92-fbga_sml.jpg)
MT47H32M16BT-3:A TR
Manufacturer Part Number
MT47H32M16BT-3:A TR
Description
IC DDR2 SDRAM 512MBIT 3NS 92FBGA
Manufacturer
Micron Technology Inc
Datasheet
1.MT47H128M4BT-37EA_TR.pdf
(129 pages)
Specifications of MT47H32M16BT-3:A TR
Format - Memory
RAM
Memory Type
DDR2 SDRAM
Memory Size
512M (32Mx16)
Speed
3ns
Interface
Parallel
Voltage - Supply
1.7 V ~ 1.9 V
Operating Temperature
0°C ~ 85°C
Package / Case
92-FBGA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
557-1048-1
MT47H32M16BT-3:A
MT47H32M16BT-3:A
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Table 43: Truth Table – CKE
Notes 1–4 apply to the entire table
PDF: 09005aef82f1e6e2
512MbDDR2.pdf - Rev. O 7/09 EN
Current State
Bank(s) active
All banks idle
Power-down
Self refresh
Previous Cycle
Notes:
(n - 1)
H
H
H
H
L
L
L
L
10. Valid commands for self refresh exit are NOP and DESELECT only.
11. Power-down and self refresh can not be entered while READ or WRITE operations,
12. Minimum CKE high time is
13. Self refresh mode can only be entered from the all banks idle state.
14. Must be a legal command, as defined in Table 36 (page 65).
1. CKE (n) is the logic state of CKE at clock edge n; CKE (n - 1) was the state of CKE at the
2. Current state is the state of the DDR2 SDRAM immediately prior to clock edge n.
3. Command (n) is the command registered at clock edge n, and action (n) is a result of
4. The state of ODT does not affect the states described in this table. The ODT function is
5. Power-down modes do not perform any REFRESH operations. The duration of power-
6. “X” means “Don’t Care” (including floating around V
7. All states and sequences not shown are illegal or reserved unless explicitly described else-
8. Valid commands for power-down entry and exit are NOP and DESELECT only.
9. On self refresh exit, DESELECT or NOP commands must be issued on every clock edge
previous clock edge.
command (n).
not available during self refresh (see ODT Timing (page 123) for more details and specif-
ic restrictions).
down mode is therefore limited by the refresh requirements.
down. However, ODT must be driven high or low in power-down if the ODT function is
enabled via EMR.
where in this document.
occurring during the
(200 clocks) is satisfied.
LOAD MODE operations, or PRECHARGE operations are in progress. See SELF REFRESH
(page 111) and SELF REFRESH (page 71) for a list of detailed restrictions.
This requires a minimum of 3 clock cycles of registration.
CKE
Cycle (n)
Current
H
H
H
L
L
L
L
L
t
XSNR period. READ commands may be issued only after
CS#, RAS#, CAS#,
115
DESELECT or NOP
DESELECT or NOP
DESELECT or NOP Active power-down entry
DESELECT or NOP
Command (n)
t
CKE = 3 ×
Refresh
WE#
Shown in Table 36 (page 65)
X
X
Micron Technology, Inc. reserves the right to change products or specifications without notice.
t
CK. Minimum CKE LOW time is
512Mb: x4, x8, x16 DDR2 SDRAM
Precharge power-down
Maintain power-down
Maintain self refresh
Self refresh entry
Power-down exit
Self refresh exit
Action (n)
REF
entry
) in self refresh and power-
Power-Down Mode
©2004 Micron Technology, Inc. All rights reserved.
t
CKE = 3 ×
7, 8, 11, 12
10, 12, 13
7, 9, 10
7, 8, 11
Notes
t
5, 6
7, 8
14
XSRD
6
t
CK.
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