256Mb: 16 Meg x 16, 8 Meg x 32 Mobile SDRAM
Features
Mobile SDRAM
MT48H16M16LF – 4 Meg x 16 x 4 banks
MT48H8M32LF – 2 Meg x 32 x 4 banks
Features
• Fully synchronous; all signals registered on positive
edge of system clock
• V
DD
/V
DD
Q = 1.70–1.95V
• Internal, pipelined operation; column address can
be changed every clock cycle
• Four internal banks for concurrent operation
• Programmable burst lengths: 1, 2, 4, 8, or continuous
page
1
• Auto precharge, includes concurrent auto precharge
• Auto refresh and self refresh modes
• LVTTL-compatible inputs and outputs
• On-chip temperature sensor to control refresh rate
• Partial-array self refresh (PASR)
• Deep power-down (DPD)
• Selectable output drive (DS)
• 64ms refresh period (8,192 rows)
Table 1:
Addressing
16 Meg x 16
4 Meg x 16 x 4
banks
8K
8K (A0–A12)
4 (BA0, BA1)
512 (A0–A8)
8 Meg x 32
2 Meg x 32 x 4
banks
8K
4K (A0–A11)
4 (BA0, BA1)
512 (A0–A8)
Configuration
Refresh count
Row addressing
Bank addressing
Column addressing
Table 2:
Key Timing Parameters
CL = CAS (READ) latency
Clock Rate
(MHz)
Access Time Data
Speed
Setup
Grade CL = 2 CL = 3 CL = 2 CL = 3 Time
-75
-8
104
100
133
125
8ns
9ns
6ns
7ns
1.5ns
2.5ns
Data
Hold
Time
1ns
1ns
Options
• V
DD
/V
DD
Q
–
1.8V/1.8V
• Configuration
–
16 Meg x 16 (4 Meg x 16 x 4 banks)
–
8 Meg x 32 (2 Meg x 32 x 4 banks)
• Plastic “green” package
–
54-ball VFBGA (8mm x 9mm)
–
90-ball VFBGA (8mm x 13mm)
• Timing – cycle time
–
7.5ns at CL = 3
–
8ns at CL = 3
• Power
–
Standard I
DD
2P/I
DD
7
–
Low I
DD
2P/I
DD
7
• Operating temperature range
–
Commercial (0° to +70°C)
–
Industrial (–40°C to +85°C)
• Design revision
Marking
H
16M16
8M32
BF
B5
-75
-8
None
L
None
IT
:G
Notes: 1. For continuous page burst, contact factory
for availability.
PDF:09005aef8219eeeb/Source: 09005aef8219eedd
MT48H16M16LF__1.fm - Rev F 4/07 EN
1
Micron Technology, Inc., reserves the right to change products or specifications without notice.
©2006 Micron Technology, Inc. All rights reserved.
Products and specifications discussed herein are subject to change by Micron without notice.
MICRON [ MICRON TECHNOLOGY ]
