HYB18M512160BF-7.5 QIMONDA [Qimonda AG], HYB18M512160BF-7.5 Datasheet - Page 9

• Manufacturer Part Number: HYB18M512160BF-7.5
• Description: DRAMs for Mobile Applications 512-Mbit DDR Mobile-RAM RoHS compliant
• Manufacturer: QIMONDA [Qimonda AG]

Table 6
Current State
Any
Idle
Row Active
Read
(Auto-
Precharge
Disabled)
Write
(Auto-
Precharge
1) This table applies when CKEn-1 was HIGH and CKEn is HIGH (see
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
Internet Data Sheet
previous state was power-down or self refresh).
those allowed to be issued to that bank when in that state. Exceptions are covered in the notes below.
Idle:
Row Active:
Read:
Write:
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:
Row Activating: Starts with registration of an ACTIVE command and ends when
Read with AP
Enabled:
Write with AP
Enabled:
on each positive clock edge during these states.
Refreshing:
Accessing Mode
Register:
Precharging All: Starts with registration of a PRECHARGE ALL command and ends when
Current State Bank n - Command to Bank n
CS
H
L
L
L
L
L
L
L
L
L
L
L
L
L
L
The bank has been precharged, and
A row in the bank has been activated, and
accesses are in progress.
terminated.
A WRITE burst has been initiated, with Auto Precharge disabled, and has not yet terminated or been
terminated.
Starts with registration of a PRECHARGE command and ends when
is in the “idle” state.
is in the “row active” state.
Starts with registration of a READ command with Auto Precharge enabled and ends when
met. Once
Starts with registration of a WRITE command with Auto Precharge enabled and ends when
met. Once
Starts with registration of an AUTO REFRESH command and ends when
DDR Mobile-RAM is in the “all banks idle” state.
Starts with registration of a MODE REGISTER SET command and ends when
t
banks are in the idle state.
A READ burst has been initiated, with Auto Precharge disabled, and has not yet terminated or been
MRD
RAS CAS WE Command / Action
is met, the DDR Mobile-RAM is in the “all banks idle” state.
X
H
H
H
H
H
H
H
H
L
L
L
L
L
L
t
t
RP
RP
H
H
H
H
H
H
X
L
L
L
L
L
L
L
L
is met, the bank is in the idle state.
is met, the bank is in the idle state.
H
H
H
H
H
X
H
L
L
L
L
L
L
L
L
DESELECT (NOP / continue previous operation)
NO OPERATION (NOP / continue previous operation)
ACTIVE (select and activate row)
AUTO REFRESH
MODE REGISTER SET
READ (select column and start Read burst)
WRITE (select column and start Write burst)
PRECHARGE (Deactivate row in bank or banks)
READ (truncate Read and start new Read burst)
WRITE (truncate Read and start new Write burst)
PRECHARGE (truncate Read and start Precharge)
BURST TERMINATE
READ (truncate Write and start Read burst)
WRITE (truncate Write and start Write burst)
PRECHARGE (truncate Write burst, start Precharge)
t
RP
9
has been met.
t
RCD
has been met. No data bursts / accesses and no register
Table
5) and after
t
Table
RCD
512-Mbit DDR Mobile-RAM
t
RP
is met. Once
t
XP
7.
is met. Once
HY[B/E]18M512160BF
or
t
t
RC
RP
t
Functional Description
XSR
is met. Once
is met. Once
07092007-3E44-UTNM
t
MRD
has been met (if the
t
RCD
Rev.1.80, 2006-11
has been met. Once
t
RP
is met, the bank
is met, the bank
t
RC
t
Notes
1)2)3)4)5)6)
1) to 6)
1) to 6)
1) to 7)
1) to 7)
1) to 6), 8)
1) to 6), 8)
1) to 6), 9)
1) to 6), 8)
1) to 6), 8), 10)
1) to 6), 9)
1) to 6), 11)
1) to 6), 8), 12)
1) to 6), 8)
1) to 6), 9),12)
t
t
RP
RP
RP
is met, the
is met, all
has been
has been