8GB (x72, ECC, DR) 244-Pin DDR3L ULP Mini-RDIMM
Features
1.35V DDR3L SDRAM ULP Mini-RDIMM
MT18KBZS1G72PKZ – 8GB
Features
Figure 1: 244-Pin ULP Mini-RDIMM
• DDR3L functionality and operations supported as
defined in the component data sheet
• 244-pin, ultra low profile (17.9mm), 82mm, miniregistered dual in-line memory module (ULP MiniRDIMM)
• Fast data transfer rates: PC3-12800, PC3-10600,
PC3-8500, or PC3-6400
• 8GB (1 Gig x 72)
• VDD = 1.35V (1.283–1.45V)
• VDD = 1.5V (1.425–1.575V)
• Backward compatible to V DD = 1.5V ±0.075V
• Supports ECC error detection and correction
• Nominal and dynamic on-die termination (ODT) for
data, strobe, and mask signals
• Dual rank, using 8Gb TwinDie ™ devices
• On-board I2C temperature sensor with integrated
serial presence-detect (SPD) EEPROM
• 8 internal device banks
• Fixed burst chop (BC) of 4 and burst length (BL) of 8
via the mode register set (MRS)
• Full module heat spreader
• Selectable BC4 or BL8 on-the-fly (OTF)
• Gold edge contacts
• Halogen-free
• Fly-by topology
• Terminated control, command, and address bus
Module height: 17.9mm (0.705in)
Options
Marking
• Operating temperature
– Commercial (0°C ≤ T A ≤ +70°C)
– Industrial (–40°C ≤ T A ≤ +85°C)1
• Package
– 244-pin Mini-RDIMM (halogen-free)
• Frequency/CAS latency
– 1.25ns @ CL = 11 (DDR3-1600)
– 1.5ns @ CL = 9 (DDR3-1333)
– 1.87ns @ CL = 7 (DDR3-1066)
Note:
None
I
Z
-1G6
-1G4
-1G1
1. Contact Micron for industrial temperature
module offerings.
Table 1: Key Timing Parameters
Data Rate (MT/s)
Speed
Grade
Industry
Nomenclature
-1G6
PC3-12800
1600
-1G4
PC3-10600
-1G1
PC3-8500
-1G0
-80B
tRP
tRC
CL = 9
CL = 8
CL = 7
CL = 6
CL = 5
(ns)
(ns)
(ns)
1333
1333
1066
1066
800
667
13.125
13.125
48.125
–
1333
1333
1066
1066
800
667
13.125
13.125
49.125
–
–
–
1066
1066
800
667
13.125
13.125
50.625
PC3-8500
–
–
–
1066
–
800
667
15
15
52.5
PC3-6400
–
–
–
–
–
800
667
15
15
52.5
1
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© 2012 Micron Technology, Inc. All rights reserved.
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CL = 11 CL = 10
tRCD
Products and specifications discussed herein are subject to change by Micron without notice.
8GB (x72, ECC, DR) 244-Pin DDR3L ULP Mini-RDIMM
Features
Table 2: Addressing
Parameter
4GB
Refresh count
8K
Row address
64K A[15:0]
Device bank address
8 BA[2:0]
Device configuration
8Gb TwinDie (1 Gig x 8)
Column address
1K A[9:0]
Module rank address
2 S#[1:0]
Table 3: Part Numbers and Timing Parameters – 8GB Modules
Base device: MT41K1G8,1 8Gb 1.35V TwinDie DDR3L SDRAM
Module
Part Number2
Density
Configuration
Module
Bandwidth
Memory Clock/
Data Rate
Clock Cycles
(CL-tRCD-tRP)
MT18KBZS1G72PK(I)Z-1G6__
8GB
1 Gig x 72
12.8 GB/s
1.25ns/1600 MT/s
11-11-11
MT18KBZS1G72PK(I)Z-1G4__
8GB
1 Gig x 72
10.6 GB/s
1.5ns/1333 MT/s
9-9-9
MT18KBZS1G72PK(I)Z-1G1__
8GB
1 Gig x 72
8.5 GB/s
1.87ns/1066 MT/s
7-7-7
Notes:
1. The data sheet for the base device can be found on Micron’s Web site.
2. All part numbers end with a two-place code (not shown) that designates component and PCB revisions.
Consult factory for current revision codes. Example: MT18KBZS1G72PKZ-1G4E1.
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8GB (x72, ECC, DR) 244-Pin DDR3L ULP Mini-RDIMM
Pin Assignments
Pin Assignments
Table 4: Pin Assignments
244-Pin DDR3 Mini-RDIMM Front
244-Pin DDR3 Mini-RDIMM Back
Pin
Symbol
Pin
Symbol
Pin
Symbol
Pin
Symbol
Pin
Symbol
Pin
Symbol
Pin
Symbol
Pin
Symbol
1
VTT
31
DQ24
61
VDD
92
DQ40
123
VTT
153
DQ29
183
A3
214
DQ45
2
VREFDQ
32
DQ25
62
A2
93
DQ41
124
VSS
154
VSS
184
A1
215
VSS
3
VSS
33
VSS
63
VDD
94
VSS
125
DQ4
155
DM3/
TDQS12
185
VDD
216
DM5/
TDQS14
4
DQ0
34
DQS3#
64
NC
95
DQS5#
126
DQ5
156
NF/
TDQS12#
186
CK0
217
NF/
TDQS14#
5
DQ1
35
DQS3
65
NC
96
DQS5
127
VSS
157
VSS
187
CK0#
218
VSS
6
VSS
36
VSS
66
VDD
97
VSS
128
DM0/
TDQS9
158
DQ30
188
VDD
219
DQ46
7
DQS0#
37
DQ26
67
VREFCA
98
DQ42
129
NF/
TDQS9#
159
DQ31
189
VDD
220
DQ47
8
DQS0
38
DQ27
68
VDD
99
DQ43
130
VSS
160
VSS
190
EVENT#
221
VSS
9
VSS
39
VSS
69
Par_In
100
VSS
131
DQ6
161
CB4
191
A0
222
DQ52
10
DQ2
40
CB0
70
VDD
101
DQ48
132
DQ7
162
CB5
192
VDD
223
DQ53
11
DQ3
41
CB1
71
A10
102
DQ49
133
VSS
163
VSS
193
BA1
224
VSS
12
VSS
42
VSS
72
BA0
103
VSS
134
DQ12
164
DM8/
TDQS17
194
VDD
225
DM6/
TDQS15
13
DQ8
43
DQS8#
73
VDD
104
DQS6#
135
DQ13
165
NF/
TDQS17#
195
RAS#
226
NF/
TDQS15#
14
DQ9
44
DQS8
74
WE#
105
DQS6
136
VSS
166
VSS
196
CS0#
227
VSS
15
VSS
45
VSS
75
CAS#
106
VSS
137
DM1/
TDQS10
167
CB6
197
VDD
228
DQ54
16
DQS1#
46
CB2
76
VDD
107
DQ50
138
NF/
TDQS10#
168
CB7
198
ODT0
229
DQ55
17
DQS1
47
CB3
77
S1#
108
DQ51
139
VSS
169
VSS
199
A13
230
VSS
18
VSS
48
VSS
78
ODT1
109
VSS
140
DQ14
170
NC
200
VDD
231
DQ60
19
DQ10
49
NC
79
VDD
110
DQ56
141
DQ15
171
NC
201
NC
232
DQ61
20
DQ11
50
RESET#
80
NC
111
DQ57
142
VSS
172
CKE1
202
NC
233
VSS
21
VSS
51
CKE0
81
NC
112
VSS
143
DQ20
173
VDD
203
VSS
234
DM7/
TDQS16
22
DQ16
52
VDD
82
VSS
113
DQS7#
144
DQ21
174
A15
204
DQ36
235
NF/
TDQS16#
23
DQ17
53
BA2
83
DQ32
114
DQS7
145
VSS
175
A14
205
DQ37
236
VSS
24
VSS
54
Err_Out#
84
DQ33
115
VSS
146
DM2/
TDQS11
176
VDD
206
VSS
237
DQ62
25
DQS2#
55
VDD
85
VSS
116
DQ58
147
NF/
TDQS11#
177
A12
207
DM4/
TDQS13
238
DQ63
26
DQS2
56
A11
86
DQS4#
117
DQ59
148
VSS
178
A9
208
NF/
TDQS13#
239
VSS
27
VSS
57
A7
87
DQS4
118
VSS
149
DQ22
179
VDD
209
VSS
240
VDDSPD
28
DQ18
58
VDD
88
VSS
119
SA0
150
DQ23
180
A8
210
DQ38
241
SA1
29
DQ19
59
A5
89
DQ34
120
SCL
151
VSS
181
A6
211
DQ39
242
SDA
30
VSS
60
A4
90
DQ35
121
SA2
152
DQ28
182
VDD
212
VSS
243
VSS
91
VSS
122
VTT
213
DQ44
244
VTT
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8GB (x72, ECC, DR) 244-Pin DDR3L ULP Mini-RDIMM
Pin Descriptions
Pin Descriptions
The pin description table below is a comprehensive list of all possible pins for all DDR3
modules. All pins listed may not be supported on this module. See Pin Assignments for
information specific to this module.
Table 5: Pin Descriptions
Symbol
Type
Description
Ax
Input
Address inputs: Provide the row address for ACTIVE commands, and the column address and auto precharge bit (A10) for READ/WRITE commands, to select one location
out of the memory array in the respective bank. A10 sampled during a PRECHARGE
command determines whether the PRECHARGE applies to one bank (A10 LOW, bank
selected by BAx) or all banks (A10 HIGH). The address inputs also provide the op-code
during a LOAD MODE command. See the Pin Assignments Table for density-specific
addressing information.
BAx
Input
Bank address inputs: Define the device bank to which an ACTIVE, READ, WRITE, or
PRECHARGE command is being applied. BA define which mode register (MR0, MR1,
MR2, or MR3) is loaded during the LOAD MODE command.
CKx,
CKx#
Input
Clock: Differential clock inputs. All control, command, and address input signals are
sampled on the crossing of the positive edge of CK and the negative edge of CK#.
CKEx
Input
Clock enable: Enables (registered HIGH) and disables (registered LOW) internal circuitry and clocks on the DRAM.
DMx
Input
Data mask (x8 devices only): DM is an input mask signal for write data. Input data
is masked when DM is sampled HIGH, along with that input data, during a write access. Although DM pins are input-only, DM loading is designed to match that of the
DQ and DQS pins.
ODTx
Input
On-die termination: Enables (registered HIGH) and disables (registered LOW) termination resistance internal to the DDR3 SDRAM. When enabled in normal operation,
ODT is only applied to the following pins: DQ, DQS, DQS#, DM, and CB. The ODT input
will be ignored if disabled via the LOAD MODE command.
Par_In
Input
Parity input: Parity bit for Ax, RAS#, CAS#, and WE#.
RAS#, CAS#, WE#
Input
Command inputs: RAS#, CAS#, and WE# (along with S#) define the command being
entered.
RESET#
Input
(LVCMOS)
Reset: RESET# is an active LOW asychronous input that is connected to each DRAM
and the registering clock driver. After RESET# goes HIGH, the DRAM must be reinitialized as though a normal power-up was executed.
Sx#
Input
Chip select: Enables (registered LOW) and disables (registered HIGH) the command
decoder.
SAx
Input
Serial address inputs: Used to configure the temperature sensor/SPD EEPROM address range on the I2C bus.
SCL
Input
Serial clock for temperature sensor/SPD EEPROM: Used to synchronize communication to and from the temperature sensor/SPD EEPROM on the I2C bus.
CBx
I/O
Check bits: Used for system error detection and correction.
DQx
I/O
Data input/output: Bidirectional data bus.
DQSx,
DQSx#
I/O
Data strobe: Differential data strobes. Output with read data; edge-aligned with
read data; input with write data; center-aligned with write data.
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8GB (x72, ECC, DR) 244-Pin DDR3L ULP Mini-RDIMM
Pin Descriptions
Table 5: Pin Descriptions (Continued)
Symbol
Type
SDA
I/O
Description
Serial data: Used to transfer addresses and data into and out of the temperature sensor/SPD EEPROM on the I2C bus.
TDQSx,
TDQSx#
Output
Redundant data strobe (x8 devices only): TDQS is enabled/disabled via the LOAD
MODE command to the extended mode register (EMR). When TDQS is enabled, DM is
disabled and TDQS and TDQS# provide termination resistance; otherwise, TDQS# are
no function.
Err_Out#
Output
Parity error output: Parity error found on the command and address bus.
(open drain)
EVENT#
Output
Temperature event:The EVENT# pin is asserted by the temperature sensor when criti(open drain) cal temperature thresholds have been exceeded.
VDD
Supply
Power supply: 1.5V ±0.075V. The component VDD and VDDQ are connected to the
module VDD.
VDDSPD
Supply
Temperature sensor/SPD EEPROM power supply: 3.0–3.6V.
VREFCA
Supply
Reference voltage: Control, command, and address VDD/2.
VREFDQ
Supply
Reference voltage: DQ, DM VDD/2.
VSS
Supply
Ground.
VTT
Supply
Termination voltage: Used for control, command, and address VDD/2.
NC
–
No connect: These pins are not connected on the module.
NF
–
No function: These pins are connected within the module, but provide no functionality.
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© 2012 Micron Technology, Inc. All rights reserved.
8GB (x72, ECC, DR) 244-Pin DDR3L ULP Mini-RDIMM
DQ Map
DQ Map
Table 6: Component-to-Module DQ Map
Component
Reference
Number
Component
DQ
U1
U3
U5
U8
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Module DQ
Module Pin
Number
Component
Reference
Number
Component
DQ
Module DQ
Module Pin
Number
0
6
131
U2
0
13
135
1
1
5
1
10
19
2
7
132
2
15
141
3
5
126
3
12
134
4
2
10
4
11
20
5
4
125
5
8
13
6
3
11
6
14
140
7
0
4
7
9
14
0
28
152
0
34
89
1
26
37
1
37
205
2
30
158
2
39
211
3
29
153
3
33
84
4
27
38
4
35
90
5
24
31
5
36
204
6
31
159
6
38
210
7
25
32
7
32
83
0
51
108
0
56
110
1
49
102
1
62
237
2
54
228
2
57
111
3
53
223
3
58
116
4
50
107
4
61
232
5
48
101
5
59
117
6
55
229
6
60
231
7
52
222
7
63
238
0
41
93
0
CB2
46
1
42
98
1
CB1
41
2
40
92
2
CB3
47
3
46
219
3
CB0
40
4
44
213
4
CB4
161
5
43
99
5
CB7
168
6
45
214
6
CB5
162
7
47
220
7
CB6
167
U4
U7
U10
6
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© 2012 Micron Technology, Inc. All rights reserved.
8GB (x72, ECC, DR) 244-Pin DDR3L ULP Mini-RDIMM
DQ Map
Table 6: Component-to-Module DQ Map (Continued)
Component
Reference
Number
Component
DQ
Module DQ
Module Pin
Number
U11
0
18
28
1
17
23
2
19
29
3
16
22
4
20
143
5
22
149
6
21
144
7
23
150
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Component
Reference
Number
7
Component
DQ
Module DQ
Module Pin
Number
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© 2012 Micron Technology, Inc. All rights reserved.
8GB (x72, ECC, DR) 244-Pin DDR3L ULP Mini-RDIMM
Functional Block Diagram
Functional Block Diagram
Figure 2: Functional Block Diagram
RS1#
RS0#
DQS0
DQS0#
DM0/TDQS9
NF/TDQS9#
DQS4
DQS4#
DM4/TDQS13
NF/TDQS13#
DQ0
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
VSS
DM/
TDQS
DQ
DQ
DQ
DQ
DQ
DQ
DQ
DQ
ZQ
NU/ CS# DQS DQS#
TDQS#
DM/
TDQS
DQ
DQ
DQ
DQ
DQ
DQ
DQ
DQ
U1
U1b
NU/ CS# DQS DQS#
TDQS#
U21
U1t
ZQ
DQS1
DQS1#
DM1/TDQS10
NF/TDQS10#
VSS
DQ8
DQ9
DQ10
DQ11
DQ12
DQ13
DQ14
DQ15
VSS
DM/
TDQS
DQ
DQ
DQ
DQ
DQ
DQ
DQ
DQ
ZQ
NU/ CS# DQS DQS#
TDQS#
DM/
TDQS
DQ
DQ
DQ
DQ
DQ
DQ
DQ
DQ
U2
U2b
DM/
TDQS
DQ
DQ
DQ
DQ
DQ
DQ
DQ
DQ
ZQ
U20
U2t
ZQ
NU/ CS# DQS DQS#
TDQS#
DM/
TDQS
DQ
DQ
DQ
DQ
DQ
DQ
DQ
DQ
U3
U11b
DQ24
DQ25
DQ26
DQ27
DQ28
DQ29
DQ30
DQ31
VSS
DM/
TDQS
DQ
DQ
DQ
DQ
DQ
DQ
DQ
DQ
ZQ
U19
U11t
ZQ
NU/ CS# DQS DQS#
TDQS#
DM/
TDQS
DQ
DQ
DQ
DQ
DQ
DQ
DQ
DQ
U4
U3b
DM/
TDQS
DQ
DQ
DQ
DQ
DQ
DQ
DQ
DQ
ZQ
NU/ CS# DQS DQS#
TDQS#
DM/
TDQS
DQ
DQ
DQ
DQ
DQ
DQ
DQ
DQ
ZQ
ZQ
NU/ CS# DQS DQS#
TDQS#
ZQ
NU/ CS# DQS DQS#
TDQS#
U9
U8b
DM/
TDQS
DQ
DQ
DQ
DQ
DQ
DQ
DQ
DQ
NU/ CS# DQS DQS#
TDQS#
CK0
CK0#
DQ
DQ
DQ
DQ
DQ
DQ
DQ
DQ
ZQ
CB0
CB1
CB2
CB3
CB4
CB5
CB6
CB7
VSS
DM/
TDQS
DQ
DQ
DQ
DQ
DQ
DQ
DQ
DQ
ZQ
NU/ CS# DQS DQS#
TDQS#
DM/
TDQS
U5
U10b
DQ
DQ
DQ
DQ
DQ
DQ
DQ
DQ
NU/ CS# DQS DQS#
TDQS#
U10
U5b
DDR3 SDRAM
DM/
TDQS
DQ
DQ
DQ
DQ
DQ
DQ
DQ
DQ
NU/ CS# DQS DQS#
TDQS#
U11
U7b
DM/
TDQS
DQ
DQ
DQ
DQ
DQ
DQ
DQ
DQ
SPD EEPROM/
Temperature
sensor
EVT A0
SDA
A1 A2
SA0 SA1 SA2
EVENT#
U13
U5t
Rank0: U1b–U5b, U7b, U8b, U10b, U11b
Rank1: U1t–U5t, U7t, U8t, U10t, U11t
Clock, command, control, and address line terminations
NU/ CS# DQS DQS#
TDQS#
RCKE[1:0], RA[15:0],
RS#[1:0], RRAS#, RCAS#,
RWE#, RODT[1:0], RBA[2:0]
U12
U7t
ZQ
VSS
CK
CK#
DDR3
SDRAM
VTT
DDR3
SDRAM
VDD
SPD EEPROM/
Temperature sensor
DDR3 SDRAM
Control, command and
address termination
VTT
ZQ
U9
SCL
NU/ CS# DQS DQS#
TDQS#
ZQ
VDD
U17
U10t
DDR3 SDRAM
CK#
ZQ
VDDSPD
NU/ CS# DQS DQS#
TDQS#
CK
P
L
L
RESET#
VSS
DM/
TDQS
RS0#: Rank0
RS1#: Rank1
RBA[2:0] DDR3 SDRAM
RA[15:0]: DDR3 SDRAM
RRAS#: DDR3 SDRAM
RCAS#: DDR3 SDRAM
RWE#: DDR3 SDRAM
RCKE0: Rank0
RCKE1: Rank1
RODT0: Rank0
RODT1: Rank1
Err_Out#
a
n
d
U14
U8t
VSS
DQS8
DQS8#
DM8/TDQS17
NF/TDQS17#
R
E
G
iI
S
T
E
R
S0#
S1#
BA[2:0]
A[15:0]
RAS#
CAS#
WE#
CKE0
CKE1
ODT0
ODT1
Par_In
U15
U4t
DQS7
DQS7#
DM7/TDQS16
NF/TDQS16#
DQ56
DQ57
DQ58
DQ59
DQ60
DQ61
DQ62
DQ63
VSS
U18
U3t
DQ
DQ
DQ
DQ
DQ
DQ
DQ
DQ
VSS
DQ48
DQ49
DQ50
DQ51
DQ52
DQ53
DQ54
DQ55
VSS
VSS
U8
U4b
DM/
TDQS
DQS6
DQS6#
DM6/TDQS15
NF/TDQS15#
NU/ CS# DQS DQS#
TDQS#
DQS3
DQS3#
DM3/TDQS12
NF/TDQS12#
NU/ CS# DQS DQS#
TDQS#
VSS
DQ40
DQ41
DQ42
DQ43
DQ44
DQ45
DQ46
DQ47
VSS
VSS
DQ16
DQ17
DQ18
DQ19
DQ20
DQ21
DQ22
DQ23
VSS
DQ
DQ
DQ
DQ
DQ
DQ
DQ
DQ
ZQ
DQS5
DQS5#
DM5/TDQS14
NF/TDQS14#
NU/ CS# DQS DQS#
TDQS#
DQS2
DQS2#
DM2/TDQS11
NF/TDQS11#
U6
DM/
TDQS
DQ32
DQ33
DQ34
DQ35
DQ36
DQ37
DQ38
DQ39
VSS
VREFCA
DDR3 SDRAM
VREFDQ
DDR3 SDRAM
VSS
DDR3 SDRAM
VSS
Note:
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1. The ZQ ball on each DDR3 component is connected to an external 240Ω ±1% resistor
that is tied to ground. It is used for the calibration of the component’s ODT and output
driver.
8
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© 2012 Micron Technology, Inc. All rights reserved.
8GB (x72, ECC, DR) 244-Pin DDR3L ULP Mini-RDIMM
General Description
General Description
DDR3 SDRAM modules are high-speed, CMOS dynamic random access memory modules that use internally configured 8-bank DDR3 SDRAM devices. DDR3 SDRAM modules use DDR architecture to achieve high-speed operation. DDR3 architecture is essentially an 8n-prefetch architecture with an interface designed to transfer two data words
per clock cycle at the I/O pins. A single read or write access for the DDR3 SDRAM module effectively consists of a single 8n-bit-wide, one-clock-cycle data transfer at the internal DRAM core and eight corresponding n-bit-wide, one-half-clock-cycle data transfers
at the I/O pins.
DDR3 modules use two sets of differential signals: DQS, DQS# to capture data and CK
and CK# to capture commands, addresses, and control signals. Differential clocks and
data strobes ensure exceptional noise immunity for these signals and provide precise
crossing points to capture input signals.
Fly-By Topology
DDR3 modules use faster clock speeds than earlier DDR technologies, making signal
quality more important than ever. For improved signal quality, the clock, control, command, and address buses have been routed in a fly-by topology, where each clock, control, command, and address pin on each DRAM is connected to a single trace and terminated (rather than a tree structure, where the termination is off the module near the
connector). Inherent to fly-by topology, the timing skew between the clock and DQS signals can be easily accounted for by using the write-leveling feature of DDR3.
Registering Clock Driver Operation
Registered DDR3 SDRAM modules use a registering clock driver device consisting of a
register and a phase-lock loop (PLL). The device complies with the JEDEC standard
"Definition of the SSTE32882 Registering Clock Driver with Parity and Quad Chip Selects for DDR3 RDIMM Applications."
The register section of the registering clock driver latches command and address input
signals on the rising clock edge. The PLL section of the registering clock driver receives
and redrives the differential clock signals (CK, CK#) to the DDR3 SDRAM devices. The
register(s) and PLL reduce clock, control, command, and address signals loading by isolating DRAM from the system controller.
Parity Operations
The registering clock driver includes an even parity function for checking parity. The
memory controller accepts a parity bit at the Par_In input and compares it with the data
received on A[15:0], BA[2:0], RAS#, CAS#, and WE#. Valid parity is defined as an even
number of ones (1s) across the address and command inputs (A[15:0], BA[2:0], RAS#,
CAS#, and WE#) combined with Par_In. Parity errors are flagged on Err_Out#.
Address and command parity is checked during all DRAM operations and during control word WRITE operations to the registering clock driver. For SDRAM operations, the
address is still propagated to the SDRAM even when there is a parity error. When writing to the internal control words of the registering clock driver, the write will be ignored
if parity is not valid. For this reason, systems must connect the Par_In pins on the
DIMM and provide correct parity when writing to the registering clock driver control
word configuration registers.
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9
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8GB (x72, ECC, DR) 244-Pin DDR3L ULP Mini-RDIMM
Temperature Sensor with Serial Presence-Detect EEPROM
Temperature Sensor with Serial Presence-Detect EEPROM
Thermal Sensor Operations
The temperature from the integrated thermal sensor is monitored and converts into a
digital word via the I2C bus. System designers can use the user-programmable registers
to create a custom temperature-sensing solution based on system requirements. Programming and configuration details comply with JEDEC standard No. 21-C page 4.7-1,
"Definition of the TSE2002av, Serial Presence Detect with Temperature Sensor."
Serial Presence-Detect EEPROM Operation
DDR3 SDRAM modules incorporate serial presence-detect. The SPD data is stored in a
256-byte EEPROM. The first 128 bytes are programmed by Micron to comply with JEDEC standard JC-45, "Appendix X: Serial Presence Detect (SPD) for DDR3 SDRAM Modules." These bytes identify module-specific timing parameters, configuration information, and physical attributes. The remaining 128 bytes of storage are available for use by
the customer. System READ/WRITE operations between the master (system logic) and
the slave EEPROM device occur via a standard I2C bus using the DIMM’s SCL (clock)
SDA (data), and SA (address) pins. Write protect (WP) is connected to V SS, permanently
disabling hardware write protection. For further information refer to Micron technical
note TN-04-42, "Memory Module Serial Presence-Detect."
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8GB (x72, ECC, DR) 244-Pin DDR3L ULP Mini-RDIMM
Electrical Specifications
Electrical Specifications
Stresses greater than those listed may cause permanent damage to the module. This is a
stress rating only, and functional operation of the module at these or any other conditions outside those indicated in each device's data sheet is not implied. Exposure to absolute maximum rating conditions for extended periods may adversely affect reliability.
Table 7: Absolute Maximum Ratings
Symbol
Parameter
Min
Max
Units
VDD
VDD supply voltage relative to VSS
–0.4
1.975
V
VIN, VOUT
Voltage on any pin relative to VSS
–0.4
1.975
V
Table 8: Operating Conditions
Symbol Parameter
VDD
VDD supply voltage
IVTT
Termination reference current from VTT
VTT
Termination reference voltage (DC) – command/address bus
II
IOZ
IVREF
TA
TC
Input leakage current;
Any input 0V ≤ VIN ≤ VDD;
VREF input 0V ≤ VIN ≤ 0.95V
(All other pins not under
test = 0V)
Output leakage current;
0V ≤ VOUT ≤ VDD; DQ and
ODT are disabled; ODT is
HIGH
Min
Nom
Max
Units
1.283
1.35
1.45
V
1.425
1.5
1.575
V
–600
–
600
mA
0.5 × VDD
0.51 × VDD +
20mV
V
2
Address inputs, RAS#,
CAS#, WE#,
S#, CKE, ODT,
BA, CK, CK#
–
–
–
µA
6
DM
–4
0
4
DQ, DQS,
DQS#
–10
0
10
µA
–18
0
18
µA
0
–
70
°C
3, 4
–40
–
85
0
–
95
°C
3, 4, 5
–40
–
95
Commercial
Industrial
DDR3 SDRAM component
Commercial
case operating temperature Industrial
Notes:
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1
0.49 × VDD 20mV
VREF supply leakage current;
VREFDQ = VDD/2 or VREFCA = VDD/2
(All other pins not under test = 0V)
Module ambient
operating temperature
Notes
1. Module is backward-compatible with 1.5V operation. Refer to device specification for
details and operation guidance.
2. VTT termination voltage in excess of the stated limit will adversely affect the command
and address signals’ voltage margin and will reduce timing margins.
3. TA and TC are simultaneous requirements.
4. For further information, refer to technical note TN-00-08: “Thermal Applications,”
available on Micron’s Web site.
5. The refresh rate is required to double when 85°C < TC ≤ 95°C.
11
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8GB (x72, ECC, DR) 244-Pin DDR3L ULP Mini-RDIMM
Electrical Specifications
6. Inputs are terminated to VDD/2. Input current is dependent on terminating resistance selected in register.
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8GB (x72, ECC, DR) 244-Pin DDR3L ULP Mini-RDIMM
DRAM Operating Conditions
DRAM Operating Conditions
Recommended AC operating conditions are given in the DDR3 component data sheets.
Component specifications are available on Micron’s web site. Module speed grades correlate with component speed grades, as shown below.
Table 9: Module and Component Speed Grades
DDR3 components may exceed the listed module speed grades; module may not be available in all listed speed grades
Module Speed Grade
Component Speed Grade
-2G1
-093
-1G9
-107
-1G6
-125
-1G4
-15E
-1G1
-187E
-1G0
-187
-80C
-25E
-80B
-25
Design Considerations
Simulations
Micron memory modules are designed to optimize signal integrity through carefully designed terminations, controlled board impedances, routing topologies, trace length
matching, and decoupling. However, good signal integrity starts at the system level.
Micron encourages designers to simulate the signal characteristics of the system's
memory bus to ensure adequate signal integrity of the entire memory system.
Power
Operating voltages are specified at the DRAM, not at the edge connector of the module.
Designers must account for any system voltage drops at anticipated power levels to ensure the required supply voltage is maintained.
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Micron Technology, Inc. reserves the right to change products or specifications without notice.
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8GB (x72, ECC, DR) 244-Pin DDR3L ULP Mini-RDIMM
ICDD Specifications
ICDD Specifications
Table 10: DDR3L ICDD Specifications and Conditions – 8GB (Die Revision E)
Values are for the MT41K1G8 DDR3L SDRAM only and are computed from values specified in the 8Gb 1.35V TwinDie component data sheet
Parameter
Symbol
1600
1333
1066
Units
Operating current 0: One bank ACTIVATE-to-PRECHARGE
ICDD0
702
630
603
mA
Operating current 1: One bank ACTIVATE-to-READ-to-PRECHARGE
ICDD1
801
765
738
mA
Precharge power-down current: Slow exit
ICDD2P0
324
324
324
mA
Precharge power-down current: Fast exit
ICDD2P1
450
414
396
mA
Precharge quiet standby current
ICDD2Q
450
414
405
mA
Precharge standby current
ICDD2N
450
423
414
mA
Precharge standby ODT current
ICDD2NT
513
477
450
mA
Active power-down current
ICDD3P
504
477
450
mA
Active standby current
ICDD3N
504
477
450
mA
Burst read operating current
ICDD4R
1620
1467
1314
mA
Burst write operating current
ICDD4W
1332
1197
1062
mA
Refresh current
ICDD5B
2277
2214
2178
mA
Self refresh temperature current: MAX TC = 85°C
ICDD6
360
360
360
mA
ICDD6ET
450
450
450
mA
All banks interleaved read current
ICDD7
2187
1917
1647
mA
Reset current
ICDD8
360
360
360
mA
Self refresh temperature current (SRT-enabled): MAX TC = 95°C
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14
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8GB (x72, ECC, DR) 244-Pin DDR3L ULP Mini-RDIMM
Registering Clock Driver Specifications
Registering Clock Driver Specifications
Table 11: Registering Clock Driver Electrical Characteristics
SSTE32882 devices or equivalent; Note 1 applies to entire table
Parameter
Symbol
Pins
Min
Nom
DC supply voltage
VDD
–
Max
Units Notes
1.283
1.35
1.45
V
1.425
1.5
1.575
V
DC reference voltage
VREF
–
0.49 × VDD - 20mV
0.5 × VDD
0.51 × VDD + 20mV
V
DC termination
voltage
VTT
–
0.49 × VDD - 20mV
0.5 × VDD
0.51 × VDD + 20mV
V
AC high-level input
voltage
VIH(AC)
Control, command,
address
VREF + 175mV
–
VDD + 400mV
V
AC low-level input
voltage
VIL(AC)
Control, command,
address
–0.4
–
VREF - 175mV
V
DC high-level input
voltage
VIH(DC)
Control, command,
address
VREF + 100mV
–
VDD + 0.4
V
DC low-level input
voltage
VIL(DC)
Control, command,
address
–0.4
–
VREF - 100mV
V
High-level input
voltage
VIH(CMOS)
RESET#, MIRROR
0.65 × VDD
–
VDD
V
Low-level input
voltage
VIL(CMOS)
RESET#, MIRROR
0
–
0.35 × VDD
V
Differential input
crosspoint voltage
range
VIX(AC)
CK, CK#, FBIN, FBIN#
0.5 × VDD - 175mV
0.5 × VDD
0.5 × VDD + 175mV
V
Differential input
voltage
VID(AC)
CK, CK#
350
–
VDD + TBD
mV
High-level output
current
IOH
Err_Out#
–
–
TBD
mA
Low-level output
current
IOL
Err_Out#
TBD
–
TBD
mA
Notes:
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2
1. Timing and switching specifications for the register listed are critical for proper operation of the DDR3 SDRAM RDIMMs. These are meant to be a subset of the parameters for
the specific device used on the module.
2. The register is backward-compatible with 1.5V operation. Refer to device specification
for details and operation guidance.
15
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8GB (x72, ECC, DR) 244-Pin DDR3L ULP Mini-RDIMM
Temperature Sensor with Serial Presence-Detect EEPROM
Temperature Sensor with Serial Presence-Detect EEPROM
The temperature sensor continuously monitors the module's temperature and can be
read back at any time over the I2C bus shared with the SPD EEPROM. Refer to JEDEC
standard No. 21-C page 4.7-1, "Definition of the TSE2002av, Serial Presence Detect with
Temperature Sensor."
Serial Presence-Detect
For the latest SPD data, refer to Micron's SPD page: www.micron.com/SPD.
Table 12: Temperature Sensor with SPD EEPROM Operating Conditions
Parameter/Condition
Symbol
Min
Max
Units
VDDSPD
3.0
3.6
V
Supply current: VDD = 3.3V
IDD
–
2.0
mA
Input high voltage: Logic 1; SCL, SDA
VIH
VDDSPD x 0.7
VDDSPD + 1
V
Input low voltage: Logic 0; SCL, SDA
VIL
–0.5
VDDSPD x 0.3
V
Output low voltage: IOUT = 2.1mA
VOL
–
0.4
V
Input current
IIN
–5.0
5.0
µA
Temperature sensing range
–
–40
125
°C
Temperature sensor accuracy (class B)
–
–1.0
1.0
°C
Supply voltage
Table 13: Temperature Sensor and SPD EEPROM Serial Interface Timing
Parameter/Condition
Symbol
Min
Max
Units
tBUF
4.7
–
µs
SDA fall time
tF
20
300
ns
SDA rise time
tR
–
1000
ns
tHD:DAT
200
900
ns
Time bus must be free before a new transition can
start
Data hold time
Start condition hold time
tH:STA
4.0
–
µs
Clock HIGH period
tHIGH
4.0
50
µs
Clock LOW period
tLOW
4.7
–
µs
tSCL
10
100
kHz
Data setup time
tSU:DAT
250
–
ns
Start condition setup time
tSU:STA
4.7
–
µs
Stop condition setup time
tSU:STO
4.0
–
µs
SCL clock frequency
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8GB (x72, ECC, DR) 244-Pin DDR3L ULP Mini-RDIMM
Temperature Sensor with Serial Presence-Detect EEPROM
EVENT# Pin
The temperature sensor also adds the EVENT# pin (open-drain). Not used by the SPD
EEPROM, EVENT# is a temperature sensor output used to flag critical events that can be
set up in the sensor’s configuration register.
EVENT# has three defined modes of operation: interrupt mode, compare mode, and
critical temperature mode. Event thresholds are programmed in the 0x01 register using
a hysteresis. The alarm window provides a comparison window, with upper and lower
limits set in the alarm upper boundary register and the alarm lower boundary register,
respectively. When the alarm window is enabled, EVENT# will trigger whenever the
temperature is outside the MIN or MAX values set by the user.
The interrupt mode enables software to reset EVENT# after a critical temperature
threshold has been detected. Threshold points are set in the configuration register by
the user. This mode triggers the critical temperature limit and both the MIN and MAX of
the temperature window.
The compare mode is similar to the interrupt mode, except EVENT# cannot be reset by
the user and returns to the logic HIGH state only when the temperature falls below the
programmed thresholds.
Critical temperature mode triggers EVENT# only when the temperature has exceeded
the programmed critical trip point. When the critical trip point has been reached, the
temperature sensor goes into comparator mode, and the critical EVENT# cannot be
cleared through software.
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8GB (x72, ECC, DR) 244-Pin DDR3L ULP Mini-RDIMM
Module Dimensions
Module Dimensions
Figure 3: 244-Pin DDR3 ULP Mini-RDIMM
Front view
3.80 (0.15)
MAX
82.15 (3.234)
81.85 (3.222)
1.0 (0.039) R
X2
U1
U2
U3
1.8 (0.071) D
X2
U4
U6
U5
10.0 (0.394)
TYP
6.0 (0.236)
TYP
1.0 (0.039)
TYP
2.0 (0.079)
TYP
Pin 1
1.1 (0.043)
0.9 (0.035)
0.5 (0.02) R
0.6 (0.024) 0.45 (0.018)
TYP
TYP
43.9 (1.73)
TYP
17.91 (0.705)
17.89 (0.704)
Pin 122
78.0 (3.071)
TYP
Back view
45° X4
U7
U8
U9
U10
U11
3.3 (0.13)
TYP
3.6 (0.142) TYP
Pin 244
33.6 (1.323)
TYP
3.2 (0.126)
TYP
Pin 123
38.4 (1.512)
TYP
With heat spreader attached
5.94 (0.234)
TYP
U1
U7
Notes:
U2
U8
U3
U9
U4
U6
U10
U11
U5
6.94 (0.273)
TYP
1. All dimensions are in millimeters (inches); MAX/MIN or typical (TYP) where noted.
2. The dimensional diagram is for reference only.
8000 S. Federal Way, P.O. Box 6, Boise, ID 83707-0006, Tel: 208-368-3900
www.micron.com/productsupport Customer Comment Line: 800-932-4992
Micron and the Micron logo are trademarks of Micron Technology, Inc. TwinDie is a trademark of Micron Technology, Inc.
All other trademarks are the property of their respective owners.
This data sheet contains minimum and maximum limits specified over the power supply and temperature range set forth herein.
Although considered final, these specifications are subject to change, as further product development and data characterization sometimes occur.
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