IBM0118180M 1M x 1810/10, 5.0V, LP, SR. IBM0118180P1M x 1810/10, 3.3V, LP, SR.
IBM11T4640MP
4M x 64 144 PIN SO DIMM
Features
• 144 Pin JEDEC Standard, 8 Byte Small Outline
Dual In-line Memory Module with 8 Byte busses
• 4Mx64 Fast Page Mode SO DIMM
• Performance:
-50
t
RAC
t
CAC
t
AA
t
RC
t
PC
RAS Access Time
CAS Access Time
Access Time From Address
Cycle Time
Fast Page Mode Cycle Time
50ns
13ns
25ns
90ns
35ns
-60
60ns
15ns
30ns
110ns
40ns
• Au contacts
• Optimized for byte-write non-parity applications
• System Performance Benefits:
- Reduced noise (18 V
SS
/18V
CC
pins)
- Byte write, byte read accesses
- Serial PDs
• Fast Page Mode, Read-Modify-Write Cycles
• Refresh Modes: RAS-Only, CBR Hidden
Refresh and Self Refresh
• 4096 refresh cycles distributed across 256ms
• 12/10 addressing (Row/Column)
• Card size: 2.66" x 1.0" x 0.149"
• DRAMS in TSOP Package
• All inputs and outputs are LVTTL (3.3V) compat-
ible
• Single 3.3V
±
0.3V Power Supply
Description
IBM11T4640MP is an industry standard 144-pin
8-byte Small Outline Dual In-line Memory Module
(SO DIMM) which is organized as a 4Mx64 high
speed memory array designed for use in non-parity
applications. The SO DIMM uses 4 4Mx16 DRAMs
in TSOP packages.
This card uses
serial presence detects
implemented
via a serial EEPROM using the two pin I
2
C Protocol.
This communication protocol uses CLOCK (SCL)
and DATA I/O (SDA) lines to synchronously clock
data between the master (ex: The System Micropro-
cessor) and the slave EEPROM device. The device
address for the EEPROM is set to zero at the card.
The first 128 bytes are utilized by the SO DIMM
manufacturer and the second 128 bytes are avail-
able to the end user.
All IBM 144-pin SO DIMMs provide a high perfor-
mance, flexible 8-byte interface in a 2.66” long
space-saving footprint. Related products are the
1Mx64, 2Mx64 and the x72 (ECC) SO DIMMs.
Card Outline
(Front)
(Back)
1
2
59 61
60 62
143
144
54H8479
SA14-4470-01
Revised 7/96
©IBM Corporation, 1996. All rights reserved.
Use is further subject to the provisions at the end of this document.
Page 1 of 28
IBM11T4640MP
4M x 64 144 PIN SO DIMM
Pin Description
RAS0
CAS0 - CAS7
WE
OE
A0 - A11
DQ0 - DQ63
V
CC
V
SS
NC
SCL
SDA
Row Address Strobe
Column Address Strobe
Read/write Input
Output Enable
Address Inputs
Data Input/Output
Power (3.3V)
Ground
No Connect
Serial Presence Detect Clock Input
Serial Presence Detect Data Input
Pinout
Pin#
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
67
69
71
Front
Side
V
SS
DQ0
DQ1
DQ2
DQ3
V
CC
DQ4
DQ5
DQ6
DQ7
V
SS
CAS0
CAS1
V
CC
Pin#
2
4
6
Back
Side
V
SS
DQ32
DQ33
DQ34
DQ35
V
CC
DQ36
DQ37
DQ38
DQ39
V
SS
CAS4
CAS5
V
CC
A3
A4
A5
V
SS
DQ40
DQ41
DQ42
DQ43
V
CC
DQ44
DQ45
DQ46
DQ47
V
SS
NC
NC
DU
V
CC
DU
NC
NC
NC
Pin#
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
135
137
139
141
143
Front
Side
OE
V
SS
NC
NC
V
CC
DQ16
DQ17
DQ18
DQ19
V
SS
DQ20
DQ21
DQ22
DQ23
V
CC
A6
A8
V
SS
A9
A10
V
CC
CAS2
CAS3
V
SS
DQ24
DQ25
DQ26
DQ27
V
CC
DQ28
DQ29
DQ30
DQ31
V
SS
SDA
V
CC
Pin#
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
136
138
140
142
144
Back
Side
NC
V
SS
NC
NC
V
CC
DQ48
DQ49
DQ50
DQ51
V
SS
DQ52
DQ53
DQ54
DQ55
V
CC
A7
A11
V
SS
A12
A13
V
CC
CAS6
CAS7
V
SS
DQ56
DQ57
DQ58
DQ59
V
CC
DQ60
DQ61
DQ62
DQ63
V
SS
SCL
V
CC
8
10
12
14
16
18
20
22
24
26
28
A0
30
A1
32
A2
34
V
SS
36
DQ8
38
DQ9
40
DQ10
42
DQ11
44
V
CC
46
DQ12
48
DQ13
50
DQ14
52
DQ15
54
V
SS
56
NC
58
NC
60
VOLTAGE KEY
DU
62
V
CC
64
DU
66
WE
68
RAS0
70
NC
72
Note:
All pin assignments are consistent for all 8 Byte versions.
Ordering Information
Part Number
IBM11T4640MP-50T
IBM11T4640MP-60T
Organization
4Mx64
4Mx64
Speed
50ns
60ns
Leads
Au
Au
Dimension
2.66”x1.0”x 0.149”
2.66”x1.0”x 0.149”
Power
3.3V
3.3V
©IBM Corporation,1996. All rights reserved.
Use is further subject to the provisions at the end of this document.
54H8479
SA14-4470-01
Revised 7/96
Page 2 of 28
IBM11T4640MP
4M x 64 144 PIN SO DIMM
Block Diagram
OE
WE
RAS0
RAS
LCAS
WE
OE
CAS0
DQ0
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
CAS4
D0
DQ32
DQ33
DQ34
DQ35
DQ36
DQ37
DQ38
DQ39
RAS
LCAS
WE
OE
D2
CAS1
DQ8
DQ9
DQ10
DQ11
DQ12
DQ13
DQ14
DQ15
UCAS
CAS5
DQ40
DQ41
DQ42
DQ43
DQ44
DQ45
DQ46
DQ47
UCAS
CAS2
DQ16
DQ17
DQ18
DQ19
DQ20
DQ21
DQ22
DQ23
RAS
LCAS
WE
OE
CAS6
D1
DQ48
DQ49
DQ50
DQ51
DQ52
DQ53
DQ54
DQ55
RAS
LCAS
WE
OE
D3
CAS3
DQ24
DQ25
DQ26
DQ27
DQ28
DQ29
DQ30
DQ31
UCAS
CAS7
DQ56
DQ57
DQ58
DQ59
DQ60
DQ61
DQ62
DQ63
UCAS
SCL
SDA
SERIAL EEPROM
A0 - A11
VCC
VSS
A0 -A11: DRAM D0 - D3
D0 - D3
D0 - D3
A0
A1
A2
54H8479
SA14-4470-01
Revised 7/96
©IBM Corporation, 1996. All rights reserved.
Use is further subject to the provisions at the end of this document.
Page 3 of 28
IBM11T4640MP
4M x 64 144 PIN SO DIMM
Truth Table
Function
Standby
Read
Early-Write
Read Modify Write
Fast Page Mode - Read 1st Cycle
Subsequent Cycles
Fast Page Mode - Write 1st Cycle
Subsequent Cycles
Fast Page Mode - RMW 1st Cycle
Subsequent Cycles
RAS-Only Refresh
CAS-Before-RAS Refresh
Read
Hidden Refresh
Write
L→H→L
L
H
L
Row
Col
Data In
RAS
H
L
L
L
L
L
L
L
L
L
L
H→L
L→H→L
CAS
X
L
L
L
H→L
H→L
H→L
H→L
H→L
H→L
H
L
L
WE
X
H
L
H→L
H
H
L
L
H→L
H→L
X
H
H
OE
X
L
X
L→H
L
L
X
X
L→H
L→H
X
X
L
Row
Address
X
Row
Row
Row
Row
N/A
Row
N/A
Row
N/A
Row
X
Row
Column
Address
X
Col
Col
Col
Col
Col
Col
Col
Col
Col
N/A
X
Col
DQx
High Impedance
Valid Data Out
Valid Data In
Valid Data In/Out
Valid Data Out
Valid Data Out
Valid Data In
Valid Data In
Valid Data In/Out
Valid Data In/Out
High Impedance
High Impedance
Data Out
Serial Presence Detect
SPD Entry
Byte #
0
1
2
3
4
5
6
7
8
Description
Number of SPD Bytes
Total # Bytes in Serial PD
Memory Type
# of Row Addresses
# of Column Addresses
# of Sodimm Banks
Module Data Width
Module Data Width (Cont.)
Module Interface Levels
50n
s
60n
s
13n
s
15n
s
SPD Entry
Value
128
256
FPM
12
10
1
64
0
LVTTL
50
60
13
15
None
4x(62.5us)
x16
undefined
Binary
Bit 7
1
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
Bit 6
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
Bit5
0
0
0
0
0
0
0
0
0
1
1
0
0
0
0
0
0
Bit4
0
0
0
0
0
0
0
0
0
1
1
0
0
0
0
1
0
Bit3
0
1
0
1
1
0
0
0
0
0
1
1
1
0
0
0
0
Bit2
0
0
0
1
0
0
0
0
0
0
1
1
1
0
1
0
0
Bit1
0
0
0
0
1
0
0
0
0
1
0
0
1
0
0
0
0
Bit0
0
0
1
0
0
1
0
0
1
0
0
1
1
0
0
0
0
Hex
80
08
01
0C
0A
01
40
00
01
32
3C
0D
0F
00
00
10
00
9
Ras Access
10
Cas Access
11
12
13
14
Dimm Config(Error Det/Corr.)
Refresh Rate/Type
Primary DRAM Type Organization
Secondary DRAM Type Organization
©IBM Corporation, 1996. All rights reserved.
Use is further subject to the provisions at the end of this document.
54H8479
SA14-4470-01
Revised 7/96
Page 4 of 28
IBM11T4640MP
4M x 64 144 PIN SO DIMM
Absolute Maximum Ratings
Symbol
VCC
VIN
VIN/OUT(SPD)
VOUT
TOPR
TSTG
PD
IOUT
Parameter
Power Supply Voltage
Input Voltage
Input Voltage(Serial PD Device)
Output Voltage
Operating Temperature
Storage Temperature
Power Dissipation
Short Circuit Output Current
Rating
-0.5 to +4.6
-0.5 to min (VCC + 0.5, 4.6)
-0.3 to 6.5
-0.5 to min (VCC + 0.5, 4.6)
0 to +70
-55 to +150
2.4
50
Units
V
V
V
V
°C
°C
W
mA
Notes
1
1
1
1
1
1
1
1
1. Stresses greater than those listed may cause permanent damage to the device. This is a stress rating only and functional opera-
tion of the device at these or any other conditions above those indicated is not implied. Exposure to absolute maximum rating con-
dition for extended periods may affect reliability.
Recommended DC Operating Conditions
(T
A
= 0 to 70
°
C)
Symbol
VCC
VIH
VIH(SPD)
VIL
VIL(SPD)
VOL(SPD)
Supply Voltage
Input High Voltage
Input High Voltage(Serial PD Device)
Input Low Voltage
Input Low Voltage(Serial PD Device)
Output Low Voltage(Serial PD Device)
IOL = 3ma
Parameter
Min
3.0
2.0
VCC x 0.7
-0.3
-0.3
—
Typ
3.3
—
—
—
—
—
Max
3.6
VCC + 0.3
VCC + 0.5
0.8
VCC x 0.3
0.4
Units
V
V
V
V
V
V
Notes
1
1, 2
1, 2
1, 2
1, 2
1. All voltages referenced to V
SS.
2. V
IH
may overshoot to V
CC
+ 2.0V for pulse widths of
≤
4.0ns . Additionally, V
IL
may undershoot to -2.0V for pulse widths
≤
4.0ns.
Pulse widths measured at 50% points with amplitude measured peak to DC reference.
Capacitance
(T
A
= 0 to +70
°
C, V
CC
= 3.3V
±
0.3V)
Symbol
CI1
CI2
CI3
CI4
CIO1
CIO2
Input Capacitance ( A0-A9)
Input Capacitance (RAS, WE, OE)
Input Capacitance (CAS)
Input Capacitance (SCL)
Input/Output Capacitance (DQ0-63)
Input/Output Capacitance (SDA)
Parameter
Max
48
56
15
8
12
10
Units
pF
pF
pF
pF
pF
pF
54H8479
SA14-4470-01
Revised 7/96
©IBM Corporation, 1996. All rights reserved.
Use is further subject to the provisions at the end of this document.
Page 5 of 28
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