參數(shù)資料
型號(hào): HB52F169E1
廠商: Hitachi,Ltd.
英文描述: 128 MB Registered SDRAM DIMM(128 MB 寄存同步DRAM DIMM)
中文描述: 128 MB的注冊(cè)SDRAM的內(nèi)存(128 MB的寄存同步的DRAM內(nèi)存)
文件頁(yè)數(shù): 16/57頁(yè)
文件大小: 870K
代理商: HB52F169E1
HB52F169E1-75F
16
AC Characteristics (Ta = 0 to 55
°
C, V
CC
= 3.3 V
±
0.3 V, V
SS
= 0 V) (cont)
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.
Test Conditions
Input and output timing reference levels: 1.5 V
Input waveform and output load: See following figures
HB52F169E1-75F
PC133
CE latency = 4
PC100
CE latency = 3
Parameter
Command setup time
Command hold time
Ref/Active to Ref/Active command
period
Active to precharge command period t
RAS
Active command to column
command (same bank)
Precharge to active command period t
RP
Write recovery or data-in to
precharge lead time
Active (a) to Active (b) command
period
Transition time (rise to fall)
Refresh period
HITA-
CHI-
Symbol
t
CS
t
CH
t
RC
PC100
Sym-
bol
Tsi
Thi
Trc
Min
1.9
1.5
67.5
Max
Min
2.6
1.6
70
Max
Unit Notes
ns
ns
ns
1
1, 5
1
Tras
Trcd
45
20
120000 50
120000 ns
1
1
t
RCD
20
ns
Trp
Tdpl
20
7.5
20
0
ns
ns
1
1
t
DPL
t
RRD
Trrd
15
20
ns
1
t
T
t
REF
1
5
64
1
5
64
ns
ms
t
T
2.4 V
0.4 V0.8 V
2.0 V
input
t
T
DQ
CL
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