HYB18L128160BC-7.5 QIMONDA [Qimonda AG], HYB18L128160BC-7.5 Datasheet - Page 42

• Manufacturer Part Number: HYB18L128160BC-7.5
• Description: DRAMs for Mobile Applications 128-Mbit Mobile-RAM
• Manufacturer: QIMONDA [Qimonda AG]

Table 15
1) This table applies when CKEn-1 was HIGH and CKEn is HIGH and after t
2) This table is bank-specific, except where noted, i.e., the current state is for a specific bank and the commands shown are
3) Current state definitions:
4) The following states must not be interrupted by a command issued to the same bank. DESELECT or NOP commands, or
5) The following states must not be interrupted by any executable command; DESELECT or NOP commands must be applied
6) All states and sequences not shown are illegal or reserved.
7) Not bank-specific; requires that all banks are idle and no bursts are in progress.
8) Same as NOP command in that state.
9) READs or WRITEs listed in the Command/Action column include READs or WRITEs with Auto Precharge enabled and
10) May or may not be bank-specific; if multiple banks are to be precharged, each must be in a valid state for precharging.
11) Not bank-specific; BURST TERMINATE affects the most recent READ or WRITE burst, regardless of bank.
Data Sheet
Current State
Read
(Auto-
Precharge
Disabled)
Write
(Auto-
Precharge
Disabled)
refresh).
those allowed to be issued to that bank when in that state. Exceptions are covered in the notes below.
Idle:The bank has been precharged, and t
Row Active:A row in the bank has been activated, and t
accesses are in progress.
Read:A READ burst has been initiated, with Auto Precharge disabled, and has not yet terminated or been
terminated.
Write:A WRITE burst has been initiated, with Auto Precharge disabled, and has not yet terminated or been
terminated.
allowable commands to the other bank should be issued on any clock edge occurring during these states. Allowable
commands to the other bank are determined by its current state and according to
Precharging:Starts with registration of a PRECHARGE command and ends when t
is in the “idle” state.
Row Activating:Starts with registration of an ACTIVE command and ends when t
is in the “row active” state.
Read with AP
Enabled:Starts with registration of a READ command with Auto Precharge enabled and ends when t
met. Once t
Write with AP
Enabled:Starts with registration of a WRITE command with Auto Precharge enabled and ends when t
met. Once t
on each positive clock edge during these states.
Refreshing:Starts with registration of an AUTO REFRESH command and ends when t
SDRAM is in the “all banks idle” state.
Accessing Mode
Register:Starts with registration of a MODE REGISTER SET command and ends when t
t
Precharging All:Starts with registration of a PRECHARGE ALL command and ends when t
banks are in the idle state.
READs or WRITEs with Auto Precharge disabled.
MRD
is met, the SDRAM is in the “all banks idle” state.
Current State Bank n - Command to Bank n (cont’d)
RP
RP
is met, the bank is in the idle state.
is met, the bank is in the idle state.
L
L
L
L
L
L
L
L
CS
H
H
L
H
H
H
L
H
RAS CAS WE Command / Action
L
L
H
H
L
L
H
H
H
L
L
L
H
L
L
L
RP
READ (select column and start new READ burst)
WRITE (select column and start new WRITE burst)
PRECHARGE (truncate READ burst, start precharge)
BURST TERMINATE
READ (select column and start READ burst)
WRITE (select column and start WRITE burst)
PRECHARGE (truncate WRITE burst, start precharge)
BURST TERMINATE
has been met.
RCD
42
has been met. No data bursts/accesses and no register
Functional DescriptionFunction Truth Tables
RC
has been met (if the previous state was self
HY[B/E]18L128160B[C/F]-7.5
RCD
Table
RP
is met. Once t
is met. Once t
RC
16.
MRD
is met. Once t
RP
128-Mbit Mobile-RAM
has been met. Once
is met. Once t
05282004-NZNK-8T0D
RCD
RP
Rev. 1.71, 2007-01
RP
RP
is met, the bank
is met, the bank
RC
has been
has been
is met, the
RP
Notes
to ,
to ,
to ,
to 11)
to ,
to ,
to ,
to ,
is met, all