HYB18L256160B QIMONDA [Qimonda AG], HYB18L256160B Datasheet - Page 45

• Manufacturer Part Number: HYB18L256160B
• Description: DRAMs for Mobile Applications 256-Mbit Mobile-RAM
• Manufacturer: QIMONDA [Qimonda AG]

9) READs or WRITEs listed in the Command/Action column include READs or WRITEs with Auto Precharge enabled and READs or WRITEs
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.
Rev. 1.73, 2006-09
01302004-CZ2R-J9SE
Idle
Row Active
Read
Write
Precharging
Row Activating
Read with AP
Enabled
Write with AP
Enabled
Refreshing
Accessing MR
Precharging All
with Auto Precharge disabled.
The bank has been precharged, and
A row in the bank has been activated, and
register accesses are in progress
A READ burst has been initiated, with Auto Precharge disabled, and has not yet terminated or
been 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
the bank is in the “idle” state
Starts with registration of an ACTIVE command and ends when
the bank is in the “row active” state
Starts with registration of a READ command with Auto Precharge enabled and ends when
has been met. Once
Starts with registration of a WRITE command with Auto Precharge enabled and ends when
has been met. Once
Starts with registration of an AUTO REFRESH command and ends when
met, the SDRAM is in the “all banks idle” state
Starts with registration of a MODE REGISTER SET command and ends when
met. Once
Starts with registration of a PRECHARGE ALL command and ends when
met, all banks are in the idle state
t
MRD
is met, the SDRAM is in the “all banks idle” state
t
t
RP
RP
is met, the bank is in the idle state
is met, the bank is in the idle state
t
RP
45
has been met
t
RCD
has been met. No data bursts/accesses and no
t
RCD
HY[B/E]18L256160B[C/F]L-7.5
is met. Once
t
RP
Current state definitions
is met. Once
t
t
RC
RP
256-Mbit Mobile-RAM
is met. Once
is met. Once
State Definitions 2
t
State Defintions 3
MRD
t
RCD
has been
TABLE 17
TABLE 18
TABLE 19
t
RP
is met,
Data Sheet
is met,
t
t
t
RC
RP
RP
t
RP
is
is