mt48lc16m8a2tg-75-it Micron Semiconductor Products, mt48lc16m8a2tg-75-it Datasheet - Page 40

• Manufacturer Part Number: mt48lc16m8a2tg-75-it
• Description: 128mb X4, X8, X16 Sdram
• Manufacturer: Micron Semiconductor Products

Table 8:
PDF: 09005aef8091e66d/Source: 09005aef8091e625
128MSDRAM_2.fm - Rev. M 10/07 EN
CKE
H
H
L
L
n - 1
CKE
H
H
L
L
Truth Table 2 – CKE
Notes: 1–4
n
Notes:
Reading or writing
Current State
Clock suspend
Clock suspend
All banks idle
All banks idle
Power-down
Power-down
1. CKE
2. Current state is the state of the SDRAM immediately prior to clock edge n.
3. COMMAND
4. All states and sequences not shown are illegal or reserved.
5. Exiting power-down at clock edge n will put the device in the all banks idle state in time for
6. Exiting self refresh at clock edge n will put the device in the all banks idle state after
7. After exiting clock suspend at clock edge n, the device will resume operation and recognize
Self refresh
Self refresh
clock edge.
MAND
clock edge n + 1 (provided that
met. COMMAND INHIBIT or NOP commands should be issued on any clock edges occurring
during the
period.
the next command at clock edge n + 1.
n
is the logic state of CKE at clock edge n; CKE
n
.
t
n
XSR period. A minimum of two NOP commands must be provided during
is the command registered at clock edge n, and ACTION
COMMAND INHIBIT or NOPX
COMMAND INHIBIT or NOP
COMMAND INHIBIT or NOP
See Table 9 on page 41
AUTO REFRESH
WRITE or NOP
40
Command
t
CKS is met).
X
X
X
X
Micron Technology, Inc., reserves the right to change products or specifications without notice.
n
n - 1
128Mb: x4, x8, x16 SDRAM
was the state of CKE at the previous
Maintain clock suspend
Maintain power-down
Maintain self refresh
Clock suspend entry
Power-down entry
Exit clock suspend
Exit power-down
Self refresh entry
Exit self refresh
Action
©1999 Micron Technology, Inc. All rights reserved.
n
n
is a result of COM-
Operation
t
Notes
XSR is
t
XSR
5
7
6