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參數(shù)資料
| 型號： | HYB18L256160BC-7.5 |
| 廠商： | INFINEON TECHNOLOGIES AG |
| 英文描述： | BJAWBMSpecialty DRAMs Mobile-RAM |
| 中文描述： | BJAWBMSpecialty DRAM的移動RAM |
| 文件頁數(shù)： | 37/49頁 |
| 文件大?。?/td> | 1327K |
| 代理商： | HYB18L256160BC-7.5 |
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Data Sheet
37
V1.4, 2004-04-30
HY[B/E]18L256160B[C/F]-7.5
256-Mbit Mobile-RAM
Functional Description
2.4.9
The
Mobile-RAM
requires a refresh of all rows in a rolling interval. Each refresh is generated in one of two ways:
by an explicit AUTO REFRESH command, or by an internally timed event in SELF REFRESH mode.
AUTO REFRESH and SELF REFRESH
2.4.9.1
AUTO REFRESH
Figure 41
AUTO REFRESH Command
Auto Refresh is used during normal operation of the
Mobile-RAM
. The command is nonpersistent, so it must
be issued each time a refresh is required. A minimum
row cycle time (
t
RC
) is required between two AUTO
REFRESH commands. The same rule applies to any
access command after the auto refresh operation. All
banks must be precharged prior to the AUTO
REFRESH command.
The refresh addressing is generated by the internal
refresh controller. This makes the address bits “Don’t
Care” during an AUTO REFRESH command. The
Mobile-RAM
requires AUTO REFRESH cycles at an
average periodic interval of 7.8
μ
s (max.). Partial array
mode has no influence on auto refresh mode.
Figure 42
Auto Refresh
= Don't Care
CS
CKE
(High)
CLK
A0-A12
BA0,BA1
CAS
WE
RAS
Ba A, Row n = bank A, row n
t
RP
t
RC
t
RC
= Don't Care
DQ
High-Z
A10 (AP)
Row n
Pre All
Address
Ba A,
Row n
Command
NOP
ARF
NOP
NOP
NOP
NOP
PRE
ARF
ACT
CLK
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| HYB18L256160BF-7.5 | RT ANG PCB CONT .40/1.295 BULK |
| HYB18RL25632AC-4 | MEMORY SPECTRUM |
| HYC3N2560NO50AA1AA | CAP 560PF 100V 10% X7R AXIAL TR-14 |
| HYB18S128160TE-3 | 122 x 32 pixel format, LED Backlight available |
| HYB25S128160TE-3 | 122 x 32 pixel format, LED Backlight available |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HYB18L256160BCL-7.5 | 制造商:QIMONDA 制造商全稱:QIMONDA 功能描述:DRAMs for Mobile Applications 256-Mbit Mobile-RAM |
| HYB18L256160BCX-7.5 | 制造商:QIMONDA 制造商全稱:QIMONDA 功能描述:DRAMs for Mobile Applications 256-Mbit Mobile-RAM |
| HYB18L256160BF | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:DRAMs for Mobile Applications |
| HYB18L256160BF-7.5 | 制造商:QIMONDA 制造商全稱:QIMONDA 功能描述:DRAMs for Mobile Applications 256-Mbit Mobile-RAM |
| HYB18L256160BF-75 | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:DRAMs for Mobile Applications |
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