參數(shù)資料
型號: HB52RF329E2
廠商: Hitachi,Ltd.
英文描述: 256 MB Registered SDRAM DIMM(256 MB 寄存同步DRAM DIMM)
中文描述: 注冊使用256 MB SDRAM的內(nèi)存(256 MB的寄存同步的DRAM內(nèi)存)
文件頁數(shù): 17/64頁
文件大?。?/td> 869K
代理商: HB52RF329E2
HB52RF329E2-75F
17
AC Characteristics
(Ta = 0 to 55
°
C, V
CC
= 3.3 V
±
0.3 V, V
SS
= 0 V) (cont)
HB52RF329E2-75F
PC133
CE
latency = 4
PC100
CE
latency = 3
Parameter
HITACHI
Symbol
PC100
Symbol Min
Max
Min
Max
Unit Notes
Command setup time
t
CS
t
CH
t
RC
Tsi
1.9
2.6
ns
1
Command hold time
Thi
1.5
3.0
ns
1, 5
Ref/Active to Ref/Active command
period
Trc
67.5
70
ns
1
Active to precharge command
period
t
RAS
Tras
45
120000
50
120000
ns
1
Active command to column
command (same bank)
t
RCD
Trcd
22.5
20
ns
1
Precharge to active command
period
t
RP
Trp
22.5
20
ns
1
Write recovery or data-in to
precharge lead time
t
DPL
Tdpl
10
10
ns
1
Active (a) to Active (b) command
period
t
RRD
Trrd
15
20
ns
1
Transition time (rise to fall)
t
T
t
REF
1
5
1
5
ns
Refresh period
Notes: 1. AC measurement assumes t
T
= 1 ns. Reference level for timing of input signals is 1.5 V.
2. Access time is measured at 1.5 V. Load condition is C
L
= 50 pF.
3. t
LZ
(max) defines the time at which the outputs achieves the low impedance state.
4. t
HZ
(max) defines the time at which the outputs achieves the high impedance state.
5. t
CES
defines CKE setup time to CK rising edge except power down exit command.
64
64
ms
Test Conditions
Input and output timing reference levels: 1.5 V
Input waveform and output load: See following figures
Ambient illuminance: Under 100 lx.
t
T
2.4 V
0.4 V0.8 V
2.0 V
input
t
T
DQ
CL
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
HB52RF329E2-75F 制造商:未知廠家 制造商全稱:未知廠家 功能描述:x72 SDRAM Module
HB52RF648DC-75B 制造商:未知廠家 制造商全稱:未知廠家 功能描述:x64 SDRAM Module
HB52RF648DC-75BL 制造商:未知廠家 制造商全稱:未知廠家 功能描述:x64 SDRAM Module
HB52RF648DC-B 制造商:ELPIDA 制造商全稱:Elpida Memory 功能描述:512 MB Unbuffered SDRAM S.O.DIMM 64-Mword 】 64-bit, 133/100 MHz Memory Bus, 2-Bank Module (16 pcs of 32 M 】 8 components) PC133/100 SDRAM
HB52RF649DC 制造商:ELPIDA 制造商全稱:Elpida Memory 功能描述:512MB Unbuffered SDRAM S.O.DIMM