參數(shù)資料
型號: SAA7346H
廠商: NXP SEMICONDUCTORS
元件分類: 消費(fèi)家電
英文描述: Shock absorbing RAM addresser
中文描述: SPECIALTY CONSUMER CIRCUIT, PQFP44
封裝: 10 X 10 MM, 1.75 MM HEIGHT, PLASTIC, SOT-307-2, QFP-44
文件頁數(shù): 15/24頁
文件大?。?/td> 113K
代理商: SAA7346H
July 1994
15
Philips Semiconductors
Preliminary specification
Shock absorbing RAM addresser
SAA7346
Notes
1.
2.
3.
4.
n = 4.
n = 2.
n = 1.
n =
1
2
.
DRAM interface timing (see Figs 14 and 15)
T
cy
t
CAC
t
OAC
t
h3
t
RH
t
RL
t
h1
t
h2
t
CL
t
h4
t
CRd
t
RCd
t
Rd
t
su1
t
RAh
t
su2
t
CAh
t
Rh
read or write cycle time
access time from CAS
access time from OE
OE to data input hold time
RAS HIGH time
RAS LOW time
RAS hold time
RAS hold time to OE LOW
CAS LOW time
CAS hold time
delay time from CAS HIGH to RAS
delay time from RAS to CAS
RAS to column address delay time
row address set-up time
row address hold time
column address set-up time
column address hold time
column address hold time from RAS
LOW
column address to RAS lead time
read command hold time
read command hold time to RAS
write command set-up time
write command hold time
write command LOW time
write command hold time from RAS
write command to CAS lead time
write command to RAS lead time
data output set-up time
data output hold time
data output hold time from RAS
160
0
70
80
20
20
20
80
10
25
20
0
15
0
20
60
20
20
10000
10000
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
t
l
t
RCh
t
RRh
t
Wsu
t
Wh1
t
WL
t
Wh2
t
WCl
t
WRl
t
Dsu
t
Dh
t
DRh
40
0
12
0
15
15
60
20
20
0
15
60
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
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