PRELIMINARY DATA SHEET
256M bits SDRAM
EDS2516ADTA (16M words
×
16 bits)
Description
The EDS2516ADTA is 256M bits SDRAMs organized
as 4,194,304 words
×
16 bits
×
4 banks. All inputs and
outputs are synchronized with the positive edge of the
clock.
They are packaged in 54-pin plastic TSOP (II).
Pin Configurations
/xxx indicate active low signal.
54-pin Plastic TSOP (II)
VDD
DQ0
VDDQ
Features
•
•
•
•
•
3.3V power supply
Clock frequency: 166MHz/133MHz (max.)
Single pulsed /RAS
×16
organization
4 banks can operate simultaneously and
independently
•
Burst read/write operation and burst read/single
write operation capability
•
2 variations of burst sequence
Sequential (BL = 1, 2, 4, 8, full page)
Interleave (BL = 1, 2, 4, 8)
•
Programmable /CAS latency (CL): 2, 3
•
Byte control by UDQM and LDQM
•
Refresh cycles: 8192 refresh cycles/64ms
•
2 variations of refresh
Auto refresh
Self refresh
•
TSOP (II) package with lead free solder (Sn-Bi)
DQ1
DQ2
VSSQ
DQ3
DQ4
VDDQ
DQ5
DQ6
VSSQ
DQ7
VDD
LDQM
/WE
/CAS
/RAS
/CS
BA0
BA1
A10
A0
A1
A2
A3
VDD
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
VSS
DQ15
VSSQ
DQ14
DQ13
VDDQ
DQ12
DQ11
VSSQ
DQ10
DQ9
VDDQ
DQ8
VSS
NC
UDQM
CLK
CKE
A12
A11
A9
A8
A7
A6
A5
A4
VSS
(Top view)
A0 to A12
BA0, BA1
DQ0 to DQ15
/CS
/RAS
/CAS
/WE
UDQM,LDQM
Address input
Bank select address
Data-input/output
Chip select
Row address strobe
Column address strobe
CKE
CLK
VDD
VSS
VDDQ
VSSQ
Write enable
Input/output mask
Clock enable
Clock input
Power for internal circuit
Ground for internal circuit
NC
Power for DQ circuit
Ground for DQ circuit
No connection
Document No. E0544E20 (Ver. 2.0)
Date Published August 2004 (K) Japan
URL: http://www.elpida.com
Elpida
Memory, Inc. 2004
EDS2516ADTA
Ordering Information
Part number
EDS2516ADTA-6B-E
EDS2516ADTA-75-E*
EDS2516ADTA-6BL-E
EDS2516ADTA-75L-E*
Supply
voltage
3.3V
Organization
(words
×
bits) Internal Banks
16M
×
16
4
Clock frequency
MHz (max.)
166
133
166
133
/CAS latency
3
Package
54-pin plastic
TSOP (II)
Note: 100MHz operation at /CAS latency = 2.
Part Number
E D S 25 16 A D TA - 6B L - E
Elpida Memory
Type
D: Monolithic Device
Environment Code
E: Lead Free
Power Consumption
Blank: Normal
L: Low Power
Speed
6B: 166MHz/CL3
75: 133MHz/CL3
100MHz/CL2
Product Code
S: SDRAM
Density / Bank
25: 256M/4-bank
Bit Organization
16: x16
Voltage, Interface
A: 3.3V, LVTTL
Die Rev.
Package
TA: TSOP (II)
Prelimimary Data Sheet E0544E20 (Ver. 2.0)
2
EDS2516ADTA
CONTENTS
Description.....................................................................................................................................................1
Features.........................................................................................................................................................1
Pin Configurations .........................................................................................................................................1
Ordering Information......................................................................................................................................2
Part Number ..................................................................................................................................................2
Electrical Specifications.................................................................................................................................4
Block Diagram .............................................................................................................................................10
Pin Function.................................................................................................................................................11
Command Operation ...................................................................................................................................13
Simplified State Diagram .............................................................................................................................21
Mode Register Configuration.......................................................................................................................22
Power-up sequence.....................................................................................................................................24
Operation of the SDRAM.............................................................................................................................25
Timing Waveforms.......................................................................................................................................41
Package Drawing ........................................................................................................................................47
Recommended Soldering Conditions ..........................................................................................................48
Prelimimary Data Sheet E0544E20 (Ver. 2.0)
3
EDS2516ADTA
Electrical Specifications
•
All voltages are referenced to VSS (GND).
•
After power up, execute power up sequence and initialization sequence before proper device operation is achieved
(refer to the Power up sequence).
Absolute Maximum Ratings
Parameter
Voltage on any pin relative to VSS
Supply voltage relative to VSS
Short circuit output current
Power dissipation
Operating ambient temperature
Storage temperature
Symbol
VT
VDD
IOS
PD
TA
Tstg
Rating
–0.5 to VDD + 0.5 (≤ 4.6 (max.))
–0.5 to +4.6
50
1.0
0 to +70
–55 to +125
Unit
V
V
mA
W
°C
°C
Note
Caution
Exposing the device to stress above those listed in Absolute Maximum Ratings could cause
permanent damage. The device is not meant to be operated under conditions outside the limits
described in the operational section of this specification. Exposure to Absolute Maximum Rating
conditions for extended periods may affect device reliability.
Recommended DC Operating Conditions (TA = 0 to +70°C)
°
Parameter
Supply voltage
Input high voltage
Input low voltage
Symbol
VDD, VDDQ
VSS, VSSQ
VIH
VIL
min.
3.0
0
2.0
–0.3
max.
3.6
0
VDD + 0.3
0.8
Unit
V
V
V
V
Notes
1
2
3
4
Notes: 1.
2.
3.
4.
The supply voltage with all VDD and VDDQ pins must be on the same level.
The supply voltage with all VSS and VSSQ pins must be on the same level.
VIH (max.) = VDD + 1.5V (pulse width
≤
5ns).
VIL (min.) = VSS – 1.5V (pulse width
≤
5ns).
Prelimimary Data Sheet E0544E20 (Ver. 2.0)
4
EDS2516ADTA
DC Characteristics 1 (TA = 0 to +70°C, VDD, VDDQ = 3.3V ± 0.3V, VSS, VSSQ = 0V)
°
Parameter
Operating current
Standby current in power down
Standby current in power down
(input signal stable)
Standby current in non power down
Standby current in non power down
(input signal stable)
Active standby current in power down
Active standby current in power down
(input signal stable)
Symbol
IDD1
IDD2P
IDD2PS
IDD2N
IDD2NS
IDD3P
IDD3PS
Grade
-6B
-75
max.
120
100
3
2
20
9
4
3
40
30
-6B
-75
-6B
-75
140
120
220
200
2
-XXL
1
Unit
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
Test condition
Burst length = 1
tRC = tRC (min.)
CKE = VIL,
tCK = tCK (min.)
CKE = VIL, tCK =
∞
CKE, /CS = VIH,
tCK = tCK (min.)
CKE = VIH, tCK =
∞,
/CS = VIH
CKE = VIL,
tCK = tCK (min.)
CKE = VIL, tCK =
∞
CKE, /CS = VIH,
tCK = tCK (min.)
CKE = VIH, tCK =
∞,
/CS = VIH
tCK = tCK (min.),
BL = 4
tRC = tRC (min.)
VIH
≥
VDD – 0.2V
VIL
≤
0.2V
VIH
≥
VDD – 0.2V
VIL
≤
0.2V
Notes
1, 2, 3
6
7
4
8
1, 2, 6
2, 7
1, 2, 4
2, 8
1, 2, 5
3
Active standby current in non power down IDD3N
Active standby current in non power down
IDD3NS
(input signal stable)
Burst operating current
Refresh current
Self refresh current
Self refresh current
(L-version)
IDD4
IDD5
IDD6
IDD6
Notes: 1. IDD depends on output load condition when the device is selected. IDD (max.) is specified at the output
open condition.
2. One bank operation.
3. Input signals are changed once per one clock.
4. Input signals are changed once per two clocks.
5. Input signals are changed once per four clocks.
6. After power down mode, CLK operating current.
7. After power down mode, no CLK operating current.
8. Input signals are VIH or VIL fixed.
Prelimimary Data Sheet E0544E20 (Ver. 2.0)
5
