MT46V64M4_1 Datasheet, PDF (1/93 Pages) Micron Technology – Double Data Rate (DDR) SDRAM

256Mb: x4, x8, x16 DDR SDRAM
Features
Double Data Rate (DDR) SDRAM
MT46V64M4 – 16 Meg x 4 x 4 banks
MT46V32M8 – 8 Meg x 8 x 4 banks
MT46V16M16 – 4 Meg x 16 x 4 banks
Features
• VDD = +2.5V ±0.2V, VDDQ = +2.5V ±0.2V
• VDD = +2.6V ±0.1V, VDDQ = +2.6V ±0.1V (DDR400)
• Bidirectional data strobe (DQS) transmitted/
received with data, that is, source-synchronous data
capture (x16 has two – one per byte)
• 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; center-
aligned with data for WRITEs
• DLL to align DQ and DQS transitions with CK
• Four internal banks for concurrent operation
• Data mask (DM) for masking write data
(x16 has two – one per byte)
• Programmable burst lengths (BL): 2, 4, or 8
• Auto refresh
– 64ms, 8192-cycle(Commercial & Industrial)
– 16ms, 8192-cycle (Automotive)
• Self refresh (not available on AT devices)
• Longer-lead TSOP for improved reliability (OCPL)
• 2.5V I/O (SSTL_2-compatible)
• Concurrent auto precharge option supported
• ^tRAS lockout supported (^tRAP = ^tRCD)
Options
Marking
• Configuration
– 64 Meg x 4 (16 Meg x 4 x 4 banks)
– 32 Meg x 8 (8 Meg x 8 x 4 banks)
– 16 Meg x 16 (4 Meg x 16 x 4 banks)
• Plastic package – OCPL
– 66-pin TSOP
– 66-pin TSOP (Pb-free)
• Plastic package
– 60-ball FBGA (8mm x 14mm)
– 60-ball FBGA (8mm x 14mm) (Pb-free)
– 60-ball FBGA (8mm x 12.5mm)
– 60-ball FBGA (8mm x 12.5mm)
(Pb-free)
• Timing – cycle time
– 5ns @ CL = 3 (DDR400B)
– 6ns @ CL = 2.5 (DDR333) FBGA only
– 6ns @ CL = 2.5 (DDR333) TSOP only
– 7.5ns @ CL = 2 (DDR266)
– 7.5ns @ CL = 2 (DDR266A)
– 7.5ns @ CL = 2.5 (DDR266B)
• Self refresh
– Standard
– Low-power self refresh
• Temperature rating
– Commercial (0°C to +70°C)
– Industrial (–40°C to +85°C)
– Automotive (–40°C to +105°C)
• Revision
– x4, x8
– x16
– x4, x8, x16
64M4
32M8
16M16
TG
P
FG¹
BG¹
CV²
CY²
-5B
-6
-6T
-75E¹
-75Z¹
-75¹
None
L
None
IT
AT⁴
:G³
:F³
:K
Notes: 1. Only available on Revision F and G.
2. Only available on Revision K.
3. Not recommended for new designs.
4. Contact Micron for availability.
PDF: 09005aef80768abb/Source: 09005aef82a95a3a
256Mb_DDR_x4x8x16_D1.fm - 256Mb DDR: Rev. O, Core DDR: Rev. B 1/09 EN
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©2003 Micron Technology, Inc. All rights reserved.
Products and specifications discussed herein are subject to change by Micron without notice.