參數(shù)資料
型號: HYS 64D32000GU
廠商: SIEMENS AG
英文描述: 2.5 V 184-pin Unbuffered DDR-I SDRAM Modules(2.5 V 184腳、寄存型256M位 DDR-I SDRAM 模塊)
中文描述: 2.5伏184針緩沖的DDR - 1 SDRAM的模塊(2.5伏,寄存型256M位的DDR 184腳,我內(nèi)存模塊)
文件頁數(shù): 13/15頁
文件大?。?/td> 164K
代理商: HYS 64D32000GU
HYS64/72D32000GU / HYS64/72D64020GU
Unbuffered DDR-I SDRAM-Modules
Preliminary Datasheet
13
5.00
Auto Precharge Write Recovery +
Precharge Time
t
DAL
35
35
35
ns
Internal Write to Read Command
Delay
t
WTR
1
1
1
*
t
CK
Power Down Entry Time
t
PDENT
t
IS + 1 CLK
2 CLK +
t
IS
t
IS + 1 CLK
2 CLK +
t
IS
ns
Power Down Exit Time
t
PDEX
t
IS + 1 CLK
2 CLK +
t
IS
t
IS + 1 CLK
2 CLK +
t
IS
ns
Self Refresh Exit Time
t
SREX
t
REF
t
200
200
200
Cycles –
Average Periodic Refresh Intercal
7.8
7.8
7.8
μ
s
CLK Transition Time
1)
Minimum Auto Refresh cycle time is greater than minimum cycle time during normal Read or Write operation.
2)
t
HP
is the lesser of t
CL
and T
CH
3)
These parameters guarantee device timing, but they are not necessarily tested on each device
they may be guaranteed by design or tester correlation
t
IS
/ t
IH
=0.9ns for PC266 are measured with command / address input slew rate of > 1.0V/ns
for command / address input slew rate of > 0.5V/ns and < 1.0V/ns t
/ t
= 1.0ns should be guaranteed by design
for PC200 t
/ t
= 1.2ns command / address input slew rate of 1.0V/ns is assumed
slew rate is measured between V
(AC) and V
OL
(AC)
CK / CK slew rates are assumed to be > 1.0V/ns
Pulse width for command / address signals to be properly sampled at rising edges of clock shall be a minimum of 2.2ns
0.5
0.5
ns
Environmental Parameters
Symbol
Parameter
Rating
Units
Notes
T
OPR
Operating Temperature (ambient)
0 to +55
o
C
H
OPR
Operating Humidity (relative)
10 to 90
%
T
STG
Storage Temperature
-50 to +100
o
C
1)
H
STG
Storage Humidity (without condensation)
5 to 95
%
1)
Barometric Pressure (operating and storage)
105 to 69
K Pascal
2)
1)
stresses greater than those listed may cause permanent damage to the device. Device functional operation at or above these conditions is not implied.
2)
up to 3000 m (9850 ft)
AC Characteristics
(cont’d)
(for reference only)
(values apply to the SDRAM component and do not include register, PLL, or card wiring)
(
T
A
= 0 to + 70
°
C,
V
DD
= 2.5 V ± 0.2 V)
Parameter
Symbol
-7
PC266A
-7.5
PC266B
-8
PC200
Unit
Notes
min.
max.
min.
max.
min.
max.
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