參數(shù)資料
型號: HB56U432SB-5N
元件分類: DRAM
英文描述: 4M X 32 EDO DRAM MODULE, 50 ns, SMA72
封裝: SIP-72
文件頁數(shù): 3/25頁
文件大?。?/td> 277K
代理商: HB56U432SB-5N
HB56U832 Series, HB56U432 Series
11
AC Characteristics (Ta = 0 to 70
°C, V
CC = 5 V ±5%, VSS = 0 V) *
1, *2, *18
Test Conditions
Input rise and fall times: 2 ns
Input level: 0 V, 3.0V
Input timing reference levels: 0.8 V, 2.4 V
Output timing reference levels: 0.8 V, 2.0 V
Output load: 1 TTL gate + C
L (100 pF) (Including scope and jig)
Read, Write, and Refresh Cycles (Common parameters)
50 ns
60 ns
70 ns
Parameter
Symbol Min
Max
Min
Max
Min
Max
Unit
Notes
Random read or write cycle
time
t
RC
84
104
124
ns
RAS precharge time
t
RP
30
40
50
ns
CAS precharge time
t
CP
7
10
13
ns
RAS pulse width
t
RAS
50
10000
60
10000
70
10000
ns
CAS pulse width
t
CAS
7
10000
10
10000
13
10000
ns
Row address setup time
t
ASR
0—
ns
Row address hold time
t
RAH
7
10
10
ns
Column address setup time
t
ASC
0—
ns
Column address hold time
t
CAH
7
10
13
ns
RAS to CAS delay time
t
RCD
11
37
14
45
14
52
ns
3
RAS to column address
delay time
t
RAD
9
2512301235ns
4
RAS hold time
t
RSH
10
13
13
ns
CAS hold time
t
CSH
35
40
45
ns
CAS to RAS precharge time t
CRP
5—
ns
CAS delay time from Din
t
DZC
0—
ns
Transition time (rise and fall) t
T
250
2
50
250
ns
5
Refresh period
(2,048 cycles)
t
REF
—32
32
—32
ms
Refresh period
(2,048 cycles) (L-version)
t
REF
128
128
128
ms
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