EM6A9320 Etron Technology Inc., EM6A9320 Datasheet - Page 11

• Manufacturer Part Number: EM6A9320
• Description: 4M x 32 DDR SDRAM
• Manufacturer: Etron Technology Inc.

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t
tw
t
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Symbol
CK
CH
CL
DQSCK
AC
DQSQ
RPRE
RPST
DQSS
WPRES
WPREH
WPST
DQSH
DQSL
IS
IH
DS
DH
HP
QH
RC
RFC
RAS
RCDRD
RCDWR
RP
RRD
CDLR
CCD
MRD
DAL
XSA
PDEX
REF
R
Et ronT ech
Electrical Characteristics and Recommended A.C. Operating Conditions
(V
Etron Confidential
DD
= 2.8V ± 5% for 350, 333, 300, or 285MHz, V
Clock cycle time
Clock high level width
Clock low level width
Row cycle time
Refresh row cycle time
Row active time
RAS# to CAS# Delay in Read
RAS# to CAS# Delay in Write
Row precharge time
Row active to Row active delay
Last data in to Read command
Col. Address to Col. Address delay
DQS-out access time from CK,CK#
Output access time from CK,CK#
DQS-DQ Skew
Read preamble
Read postamble
CK to valid DQS-in
DQS-in setup time
DQS-in hold time
DQS write postamble
DQS in high level pulse width
DQS in low level pulse width
Address and Control input setup time
Address and Control input hold time
DQ & DM setup time to DQS
DQ & DM hold time to DQS
Clock half period
Output DQS valid window
Write recovery time
Mode register set cycle time
Auto precharge write recovery + Precharge
Self refresh exit to read command delay
Power down exit time
Refresh interval time
Parameter
CL = 3
CL = 4
CL = 5
tCHMIN
tCLMIN
tHP -
2.86
2.86
0.45
0.45
0.85
0.35
0.35
0.35
0.35
Min
2tCK
-0.6
-0.6
200
tIS +
3.3
0.9
0.4
0.4
0.4
0.4
0.9
0.9
20
22
14
or
0
7
5
6
4
3
2
1
1
9
-
-
DD
=2.5 ± 5% for 250 or 200MHz, T
2.8
100K
Max
0.55
0.55
0.35
1.15
0.6
0.6
1.1
0.6
0.6
0.6
0.6
7.8
10
10
5
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
4Mx32 DDR SDRAM
tCHMIN
tCLMIN
tHP -
0.45
0.45
0.85
0.35
0.35
0.35
0.35
2tCK
Min
-0.6
-0.6
200
tIS +
3.3
3.0
3.0
0.9
0.4
0.4
0.4
0.4
0.9
0.9
20
22
14
or
0
7
5
6
4
3
2
1
1
9
-
-
11
3.0
100K
Max
0.55
0.55
0.35
1.15
0.6
0.6
1.1
0.6
0.6
0.6
0.6
7.8
10
10
5
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
tCHMIN
tCLMIN
tHP -
0.45
0.45
0.85
0.35
0.35
0.35
0.35
2tCK
Min
-0.6
-0.6
200
tIS +
3.3
3.3
3.3
0.9
0.4
0.4
0.4
0.4
0.9
0.9
17
19
12
or
0
6
4
5
3
3
2
1
1
9
-
-
3.3
100K
A
Max
0.55
0.55
0.35
1.15
0.6
0.6
1.1
0.6
0.6
0.6
0.6
7.8
10
10
= 0~70 °C)
5
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
tCLMIN
tCHMIN
tHP -
0.45
0.45
0.85
0.35
2tCK
Min
-0.6
-0.6
200
tIS +
3.5
3.5
3.5
0.9
0.4
0.4
0.4
0.4
0.9
0.9
0.4
0.4
0.4
16
18
11
or
0
5
3
3
3
3
2
1
1
9
-
3.5
100K
Max
0.55
0.55
1.15
0.6
0.6
0.4
1.1
0.6
0.6
0.6
0.6
7.8
10
10
Rev 0.3
5
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
tCHMIN
tCLMIN
tHP -
0.45
0.45
0.85
0.35
0.45
0.45
0.45
2tCK
Min
-0.7
-0.7
tIS +
200
0.9
0.4
0.4
0.4
0.4
0.9
0.9
EM6A9320
15
17
10
or
4
4
4
0
5
3
3
3
3
2
1
2
8
-
-
4.0
100K
Max
0.55
0.55
1.15
0.7
0.7
0.4
1.1
0.6
0.6
0.6
0.6
7.8
10
10
5
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
tCHMIN
tCLMIN
tHP -
0.45
0.45
0.85
0.35
Min
2tCK
-0.7
-0.7
200
tIS +
July. 2002
0.9
0.4
0.4
0.4
0.4
1.0
1.0
0.5
0.5
0.5
12
14
or
5
5
5
0
8
4
2
3
2
2
2
1
2
7
-
5.0
100K
Max
0.55
0.55
0.45
1.15
0.7
0.7
1.1
0.6
0.6
0.6
0.6
7.8
10
10
10
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Unit
t
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t
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
us
CK
CK
CK
CK
CK
CK
CK
CK
CK
CK
CK
CK
CK
CK
CK
CK
CK
CK
CK
CK
CK