Document
2Gb: x16, x32 Mobile LPDDR SDRAM Features
Mobile Low-Power DDR SDRAM
MT46H128M16LF – 32 Meg x 16 x 4 Banks MT46H64M32LF – 16 Meg x 32 x 4 Banks MT46H128M32L2 – 16 Meg x 32 x 4 Banks x 2 MT46H256M32L4 – 32 Meg x 16 x 4 Banks x 4 MT46H256M32R4 – 32 Meg x 16 x 4 Banks x 4 Features
• VDD/VDDQ = 1.70–1.95V • Bidirectional data strobe per byte of data (DQS) • Internal, pipelined double data rate (DDR) architecture; two data accesses per clock cycle • Differential clock inputs (CK and CK#) • Commands entered on each positive CK edge • DQS edge-aligned with data for READs; centeraligned with data for WRITEs • 4 internal banks for concurrent operation • Data masks (DM) for masking write data; one mask per byte • Programmable burst lengths (BL): 2, 4, 8, or 16 • Concurrent auto precharge option is supported • Auto refresh and self refresh modes • 1.8V LVCMOS-compatible inputs • Temperature-compensated self refresh (TCSR) • Partial-array self refresh (PASR) • Deep power-down (DPD) • Status read register (SRR) • Selectable output drive strength (DS) • Clock stop capability • 64ms refresh; 32ms for the automotive temperature range Table 1: Key Timing Parameters (CL = 3)
Speed Grade -5 -54 -6 -75 Clock Rate 200 MHz 185 MHz 166 MHz 133 MHz Access Time 5.0ns 5.0ns 5.0ns 6.0ns
Options
• VDD/VDDQ – 1.8V/1.8V • Configuration – 128 Meg x 16 (32 Meg x 16 x 4 banks) – 64 Meg x 32 (16 Meg x 32 x 4 banks) • Addressing – JEDEC-standard – Reduced page-size1 – 4-die stack reduced page-size2 – 2-die stack standard – 4-die stack standard • Plastic "green" package – 60-ball VFBGA (10mm x 11.5mm)3 – 90-ball VFBGA (10mm x 13mm)4 • PoP (plastic "green" package) – 168-ball VFBGA (12mm x 12mm)4 – 168-ball WFBGA (12mm x 12mm)4 – 168-ball WFBGA (12mm x 12mm)4 – 240-ball WFBGA (14mm x 14mm)4 • Timing – cycle time – 5ns @ CL = 3 (200 MHz) – 5.4ns @ CL = 3 (185 MHz) – 6ns @ CL = 3 (166 MHz) – 7.5ns @ CL = 3 (133 MHz) • Power – Standard IDD2/IDD6 • Operating temperature range – Commercial (0˚ to +70˚C) – Industrial (–40˚C to +85˚C) – Automotive (–40˚C to +105˚C)1 • Design revision
Notes: 1. 2. 3. 4.
Marking
H 128M16 64M32 LF LG R4 L2 L4 CK CM JV KQ MA MC -5 -54 -6 -75 None None IT AT :A
Contact factory for availability. Available in the 168-ball JV package only. Available only for x16 configuration. Available only for x32 configuration.
PDF: 09005aef83a73286 2gb_ddr_mobile_sdram_t69m.pdf - Rev. M 11/10 EN
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Products and specifications discussed herein are subject to change by Micron without notice.
Micron Technology, Inc. reserves the right to change products or specifications without notice. © 2009 Micron Technology, Inc. All rights reserved.
2Gb: x16, x32 Mobile LPDDR SDRAM Features
Table 2: Configuration Addressing – 2Gb
Architecture Configuration Refresh count Row addressing Column addressing 128 Meg x 16 8K 16K A[13:0] 2K A11, A[9:0] 64 Meg x 32 8K 16K A[13:0] 1K A[9:0] Reduced Page-Size Option 128 Meg x 16 32 Meg x 16 x 4 banks 8K 32K A[14:0] 1K A[9:0] Reduced Page-Size Option 64 Meg x 32 16 Meg x 32 x 4 banks 8K 32K A[14:0] 512 A[8:0]
32 Meg x 16 x 4 banks 16 Meg x 32 x 4 banks
See Package Block Diagrams (page 17) for descriptions of signal connections and die configurations for each respective architecture. Figure 1: 2Gb Mobile LPDDR Part Numbering
MT 46
Micron Technology Product Family
46 = Mobile LPDDR
H
64M32 LF CK -6
IT
:A
Design Revision
:A = First generation
Operating Temperature
Blank = Commercial (0°C to +70°C) IT = Industrial (–40°C to +85°C) AT = Automotive (–40°C to +105°C)
Operating Voltage
H = 1.8/1.8V
Configuration
128 Meg x 16 64 Meg x 32 128 Meg x 32 256 Meg x 32
Power
Blank = Standard IDD2/IDD6
Cycle Time (CL = 3)
-5 = 5ns tCK -54 = 5.4ns tCK -6 = 6ns tCK -75 = 7.5ns tCK
Addressing
LF = JEDEC-standard addressing L2 = 2-die stack standard addressing L4 = 4-die stack standard addressing LG = Reduced page-size R4 = 4-die stack reduced page-size addressing
Package Codes
CK = 60-ball (10mm x 11.5mm) VFBGA, “green” CM = 90-ball (10mm x 13mm) VFBGA, “green” JV = 168-ball (12mm x 12mm) VFBGA, “green” KQ = 168-ball (12mm x 12mm) WFBGA, “green” MA = 168-ball (12mm x 12mm) WFBGA, “green” MC = 240-ball (14mm x 14mm) WFBGA, “green”
FBGA Part Marking Decoder
Due to space limitations, FBGA-packaged components have an abbreviated part marking that is different from the part number. Micron’s FBGA part marking decoder is available at www.micron.com/decoder.
PDF: 09005aef83a73286 2gb_ddr_mobile_sdram_t69m.pdf - Rev. M 11/10 EN
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Micron Technology, Inc. reserves the right to change products or specifications without notice. © 2009 Micron Technology, Inc. All rights reserved.
2Gb: x16, x32 Mobile LPDDR SDRAM Features
General Description ......................................................................................................................................... 8 Functional Block Diagrams .....................................................................................................................