200pin DDR SDRAM SODIMM

M485L0914BT0

Rev. 0.1 June. 2001

GENERAL DESCRIPTION

PIN DESCRIPTION

* These pins are not used in this module.

Pin Name

Function

A0 ~ A11

Address input (Multiplexed)

BA0 ~ BA1

Bank Select Address

DQ0 ~ DQ63

Data input/output

DQS0 ~ DQS7

Data Strobe input/output

CK0~ CK2,
CK0~ CK2

Clock input

CKE0

Clock enable input

CS0

Chip select input

RAS

Row address strobe

CAS

Column address strobe

Write enable

DM0 ~ DM7

Data - in mask

VDD

Power supply (2.5V)

VDDQ

Power Supply for DQS(2.5V)

VSS

Ground

VREF

Power supply for reference

VDDSPD

Serial EEPROM Power
Supply (2.3V to 3.6V)

SDA

Serial data I/O

SCL

Serial clock

SA0 ~ 2

Address in EEPROM

VDDID

VDD identification flag

No connection

SAMSUNG ELECTRONICS CO., Ltd. reserves the right to change products and specifications without notice.

M485L0914BT0 200pin DDR SDRAM SODIMM
8Mx72 200pin DDR SDRAM SODIMM based on 8Mx16

The Samsung M485L0914BT0 is 8M bit x 64 Double Data
Rate SDRAM high density memory modules based on first gen
of 128Mb DDR SDRAM respectively.
The Samsung M485L0914BT0 consists of five CMOS 8M x 16
bit with 4banks Double Data Rate SDRAMs in 66pin TSOP-
II(400mil) packages mounted on a 200pin glass-epoxy sub-
strate. Four 0.1uF decoupling capacitors are mounted on the
printed circuit board in parallel for each DDR SDRAM.
The M485L0914BT0 is Dual In-line Memory Modules and
intended for mounting into 200pin edge connector sockets.
Synchronous design allows precise cycle control with the use
of system clock. Data I/O transactions are possible on both
edges of DQS. Range of operating frequencies, programmable
latencies and burst lengths allow the same device to be useful
for a variety of high bandwidth, high performance memory sys-
tem applications.

· Performance range

· Power supply : Vdd: 2.5V

0.2V, Vddq: 2.5V

0.2V

Double-data-rate architecture; two data transfers per clock cycle

· Bidirectional data strobe(DQS)
· Differential clock inputs(CK and CK)
· DLL aligns DQ and DQS transition with CK transition
· Programmable Read latency 2, 2.5 (clock)
· Programmable Burst length (2, 4, 8)
· Programmable Burst type (sequential & interleave)
· Edge aligned data output, center aligned data input
· Auto & Self refresh, 15.6us refresh interval(4K/64ms refresh)
· Serial presence detect with EEPROM
· PCB :

Height 1250 (mil), double sided component

Part No.

Max Freq.

Interface

M485L0914BT0-C(L)A2 133MHz(7.5ns@CL=2)

SSTL_2

M485L0914BT0-C(L)B0 133MHz(7.5ns@CL=2.5)
M485L0914BT0-C(L)A0 100MHz(10ns@CL=2)

FEATURE

PIN CONFIGURATIONS (Front side/back side)

Pin

Front

Pin

Front

Pin

Front

Pin

Back

Pin

Back

Pin

Back

1
3
5
7
9

11
13
15
17
19
21
23
25
27
29
31
33
35
37
39

41
43
45
47
49
51
53
55
57
59
61
63
65

VREF

VSS
DQ0
DQ1

VDD

DQS0

DQ2
VSS
DQ3
DQ8
VDD
DQ9

DQS1

VSS

DQ10
DQ11

VDD

CK0

/CK0

VSS

DQ16
DQ17

VDD

DQS2

DQ18

VSS

DQ19
DQ24

VDD

DQ25

DQS3

VSS

DQ26

67
69
71
73
75
77
79
81
83
85
87
89
91
93
95
97
99

101
103
105
107
109
111
113
115
117
119
121
123
125
127
129
131
133

DQ27

VDD

CB0
CB1
VSS

DQS8

CB2

VDD

CB3

VSS
CK2

/CK2

VDD

CKE1

DU(A13)

A12

VSS

A7
A5
A3
A1

VDD

A10/AP

BA0
/WE

/S0
DU

VSS

DQ32
DQ33

VDD

DQS4

135
137
139
141
143
145
147
149
151
153
155
157
159
161
163
165
167
169
171
173
175
177
179
181
183
185
187
189
191
193
195
197
199

DQ34

VSS

DQ35
DQ40

VDD

DQ41

DQS5

VSS

DQ42
DQ43

VDD
VDD

VSS
VSS

DQ48
DQ49

VDD

DQS6

DQ50

VSS

DQ51
DQ56

VDD

DQ57

DQS7

VSS

DQ58
DQ59

VDD
SDA

SCL

VDDSPD

VDDID

2
4
6
8

10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40

42
44
46
48
50
52
54
56
58
60
62
64
66

VREF

VSS
DQ4
DQ5

VDD
DM0
DQ6

VSS
DQ7

DQ12

VDD

DQ13

DM1

VSS

DQ14
DQ15

VDD
VDD

VSS
VSS

DQ20
DQ21

VDD
DM2

DQ22

VSS

DQ23
DQ28

VDD

DQ29

DM3

VSS

DQ30

68
70
72
74
76
78
80
82
84
86
88
90
92
94
96
98

100
102
104
106
108
110
112
114
116
118
120
122
124
126
128
130
132
134

DQ31

VDD

CB4
CB5
VSS

DM8

CB6

VDD

CB7

DU/(RESET)

VSS
VSS
VDD
VDD

CKE0

DU(BA2)

A11

VSS

A6
A4
A2
A0

VDD

BA1

/RAS
/CAS

/S1
DU

VSS

DQ36
DQ37

VDD
DM4

136
138
140
142
144
146
148
150
152
154
156
158
160
162
164
166
168
170
172
174
176
178
180
182
184
186
188
190
192
194
196
198
200

DQ38

VSS

DQ39
DQ44

VDD

DQ45

DM5

VSS

DQ46
DQ47

VDD

/CK1

CK1
VSS

DQ52
DQ53

VDD
DM6

DQ54

VSS

DQ55
DQ60

VDD

DQ61

DM7

VSS

DQ62
DQ63

VDD

SA0
SA1
SA2

Key

200pin DDR SDRAM SODIMM

M485L0914BT0

Rev. 0.1 June. 2001

FUNCTIONAL BLOCK DIAGRAM

A0 - A13

A0-A13: DDR SDRAMs D0 - D4

BA0 - BA1

BA0-BA1: DDR SDRAMs D0 - D4

RAS

RAS: SDRAMs D0 - D4

CAS

CAS: SDRAMs D0 - D4

CKE0

CKE: SDRAMs D0 - D4

WE: SDRAMs D0 - D4

Notes:
1. DQ-to-I/O wiring is shown as recom-
mended but may be changed.
2. DQ/DQS/DM/CKE/CS relationships must
be maintained as shown.
3. DQ, DQS, DM/DQS resistors: 22 Ohms.
4. VDDID strap connections
(for memory device VDD, VDDQ):
STRAP OUT (OPEN): VDD = VDDQ
STRAP IN (VSS): VDD

VDDQ.

Serial PD

SA0

SA1

SA2

SCL

SDA

D0 - D4

DDQ

D0 - D4

VREF

DDID

Strap: see Note 4

DDSPD

SPD

Clock Wiring

Clock

Input

SDRAMs

CK0/CK0

CK1/CK1

CK2/CK2

2 SDRAMs

1 SDRAMs

*Clock Net Wiring

Card

Edge

Dram1

Cap

Dram3

Cap

R=120

(Cap)

DQ0
DQ1
DQ2
DQ3

LDM
I/O 0
I/O 1
I/O 2
I/O 3

DQ4
DQ5
DQ6

DQ7

I/O 4
I/O 5
I/O 6

I/O 7

UDM

I/O 8
I/O 9
I/O 10
I/O 11
I/O 12
I/O 13
I/O 14
I/O 15

DQ9
DQ10
DQ11
DQ12
DQ13
DQ14
DQ15

DQ8

DM0

LDQS

DQS0

DM1

DQS1

UDQS

DQ32
DQ33
DQ34
DQ35

LDM
I/O 0
I/O 1
I/O 2
I/O 3

DQ36
DQ37
DQ38

DQ39

I/O 4
I/O 5
I/O 6

I/O 7

UDM

I/O 8
I/O 9
I/O 10
I/O 11
I/O 12
I/O 13
I/O 14
I/O 15

DQ41
DQ42
DQ43
DQ44
DQ45
DQ46
DQ47

DQ40

DM4

LDQS

DQS4

DM5

DQS5

UDQS

DQ16
DQ17
DQ18
DQ19

LDM
I/O 0
I/O 1
I/O 2
I/O 3

DQ20
DQ21
DQ22

DQ23

I/O 4
I/O 5
I/O 6

I/O 7

UDM

I/O 8
I/O 9
I/O 10
I/O 11
I/O 12
I/O 13
I/O 14
I/O 15

DQ25
DQ26
DQ27
DQ28
DQ29
DQ30
DQ31

DQ24

DM2

LDQS

DQS2

DM3

DQS3

UDQS

DQ48
DQ49
DQ50
DQ51

LDM
I/O 0
I/O 1
I/O 2
I/O 3

DQ52
DQ53
DQ54

DQ55

I/O 4
I/O 5
I/O 6

I/O 7

UDM

I/O 8
I/O 9
I/O 10
I/O 11
I/O 12
I/O 13
I/O 14
I/O 15

DQ57
DQ58
DQ58
DQ60
DQ61
DQ62
DQ63

DQ56

DM6

LDQS

DQS6

DM7

DQS7

UDQS

47K

CB0
CB1
CB2
CB3

DM
I/O 0
I/O 1
I/O 2
I/O 3

CB4
CB5
CB6

CB7

I/O 4
I/O 5
I/O 6

I/O 7

UDM

I/O 8
I/O 9
I/O 10
I/O 11
I/O 12
I/O 13
I/O 14
I/O 15

DM8

DQS

DQS8

UDQS

200pin DDR SDRAM SODIMM

M485L0914BT0

Rev. 0.1 June. 2001

ABSOLUTE MAXIMUM RATINGS

Parameter

Symbol

Value

Unit

Voltage on any pin relative to Vss

, V

OUT

-0.5 ~ 3.6

Voltage on V

supply relative to Vss

-1.0 ~ 3.6

Voltage on V

DDQ

supply relative to Vss

DDQ

-0.5 ~ 3.6

Storage temperature

STG

-55 ~ +150

Power dissipation

Short circuit current

Permanent device damage may occur if ABSOLUTE MAXIMUM RATINGS are exceeded.
Functional operation should be restricted to recommended operating condition.
Exposure to higher than recommended voltage for extended periods of time could affect device reliability.

Note :

POWER & DC OPERATING CONDITIONS (SSTL_2 In/Out)

Notes 1. Includes

25mV margin for DC offset on V

REF

, and a combined total of

50mV margin for all AC noise and DC offset on V

REF

bandwidth limited to 20MHz. The DRAM must accommodate DRAM current spikes on V

REF

and internal DRAM noise coupled

TO V

REF

, both of which may result in V

REF

noise. V

REF

should be de-coupled with an inductance of

3nH.

2.V

is not applied directly to the device. V

is a system supply for signal termination resistors, is expected to be set equal to

REF

, and must track variations in the DC level of V

REF

3. V

is the magnitude of the difference between the input level on CK and the input level on CK.

4. These parameters should be tested at the pin on actual components and may be checked at either the pin or the pad in
simulation. The AC and DC input specifications are relative to a VREF envelop that has been bandwidth limited to 200MHZ.
5. The value of V

is expected to equal 0.5*V

DDQ

of the transmitting device and must track variations in the dc level of the same.

6. These charactericteristics obey the SSTL-2 class II standards.

Recommended operating conditions(Voltage referenced to V

=0V, T

=0 to 70

Parameter

Symbol

Min

Max

Unit

Note

Supply voltage(for device with a nominal V

of 2.5V)

2.3

2.7

I/O Supply voltage

DDQ

2.3

2.7

I/O Reference voltage

REF

VDDQ/2-50mV

VDDQ/2+50mV

I/O Termination voltage(system)

REF

-0.04

REF

+0.04

Input logic high voltage

(DC)

REF

+0.15

DDQ

+0.3

Input logic low voltage

(DC)

-0.3

REF

-0.15

Input Voltage Level, CK and CK inputs

(DC)

-0.3

DDQ

+0.3

Input Differential Voltage, CK and CK inputs

(DC)

0.3

DDQ

+0.6

Input crossing point voltage, CK and CK inputs

(DC)

1.15

1.35

Input leakage current

-2

Output leakage current

-5

Output High Current(Normal strengh driver)
;V

OUT

= V

+ 0.84V

-16.8

Output High Current(Normal strengh driver)
;V

OUT

= V

- 0.84V

16.8

Output High Current(Half strengh driver)
;V

OUT

+ 0.45V

-9

Output High Current(Half strengh driver)
;V

OUT

= V

- 0.45V

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