em636165 Etron Technology Inc., em636165 Datasheet - Page 20

• Manufacturer Part Number: em636165
• Description: 1m X 16 Bit Synchronous Dram Sdram
• Manufacturer: Etron Technology Inc.

Electrical Characteristics and Recommended A.C. Operating Conditions
(V
* CL is CAS# Latency.
Note:
1. Stress greater than those listed under "Absolute Maximum Ratings" may cause permanent damage to the
2. All voltages are referenced to V
3. These parameters depend on the cycle rate and these values are measured by the cycle rate under the
4. These parameters depend on the output loading. Specified values are obtained with the output open.
5. Power-up sequence is described in Note 12.
Etron Confidential
Symbol
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
RC
RCD
RP
RRD
RAS
WR
CK
CH
CL
AC
CCD
OH
LZ
HZ
IS
IH
PDE
REFI
XSR
DD
device.
≤ 3ns.
minimum value of t
= 3.3V ± 0.3V, T
Row cycle time
(same bank)
RAS# to CAS# delay
(same bank)
Precharge to refresh/row activate
command (same bank)
Row activate to row activate delay
(different banks)
Row activate to precharge time
(same bank)
Write recovery time
Clock high time
Clock low time
Access time from CLK
(positive edge)
CAS# to CAS# Delay time
Data output hold time
Data output low impedance
Data output high impedance
Data/Address/Control Input set-up time
Data/Address/Control Input hold time
PowerDown Exit set-up time
Refresh Interval Time
Exit Self-Refresh to Read Command
Clock cycle time
A
A.C. Parameter
= 0~70 ° C) (Note: 5, 6, 7, 8)
CK
and t
RC
. Input signals are changed one time during every 2 t
SS
. VIH(Max) = 4.6V for pulse width ≤ 3ns.VIL(Min) = -1.5Vfor pulse width
CL* = 2
CL* = 3
CL* = 2
CL* = 3
t
t
IS+
RC+
56.5
38.5 100k
Min.
5.5
18
18
11
2
7
2
2
1
2
1
2
1
-
-
-
20
t
CK
t
- 55
IS
15.6
Max
5.5
3.5
5
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
t
t
RC+
IS+
Min.
7.5
60
18
18
12
42
2
6
2
2
1
2
1
2
1
-
-
-
t
CK
t
IS
-6
100k
15.6
Max
6
5
4
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
t
t
RC+
IS+
Min.
2.5
2.5
70
21
21
14
49
2
8
7
1
2
1
2
1
-
-
-
-
t
CK
t
IS
-7
Rev. 3.4
100k
15.6
Max
CK
5.5
6.5
5
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
EM636165
.
t
t
RC+
IS+
Min.
2.5
2.5
70
21
21
14
49
2
8
7
1
2
1
2
1
-
-
-
-
t
CK
t
IS
-7L
Apr. 2008
100k
15.6
Max
6.5
5.5
5
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Unit Note
t
t
t
ns
ns
ns
µs
ns
CK
CK
CK
10
11
10
11
11
9
9
9
9
8