128Mb: x4, x8, x16 SDRAM
Features
SDR SDRAM
MT48LC32M4A2 – 8 Meg x 4 x 4 Banks
MT48LC16M8A2 – 4 Meg x 8 x 4 Banks
MT48LC8M16A2 – 2 Meg x 16 x 4 Banks
Features
Options
• Plastic package – OCPL2
– 54-pin TSOP II (400 mil)
– 54-pin TSOP II (400 mil) Pb-free
– 60-ball FBGA (8mm x 16mm)
– 60-ball FBGA (8mm x 16mm) Pb-free
– 54-ball VFBGA (x16 only) (8mm x
8mm)
– 54-ball VFBGA (x16 only) (8mm x
8mm) Pb-free
• Timing – cycle time
– 7.5ns @ CL = 3 (PC133)
– 7.5ns @ CL = 2 (PC133)
– 6.0ns @ CL = 3 (x16 only)
• Self refresh
– Standard
– Low power
• Revision
• Operating temperature range
– Commercial (0˚C to +70˚C)
– Industrial (–40˚C to +85˚C)
– Automotive (–40˚C to +105˚C)
• PC100- and PC133-compliant
• Fully synchronous; all signals registered on positive
edge of system clock
• Internal, pipelined operation; column address can
be changed every clock cycle
• Internal banks for hiding row access/precharge
• Programmable burst lengths (BL): 1, 2, 4, 8, or full
page
• Auto precharge, includes concurrent auto precharge
and auto refresh modes
• Self refresh modes: Standard and low power
(not available on AT devices)
• Auto Refresh
– 64ms, 4096-cycle refresh (commercial and
industrial)
– 16ms, 4096-cycle refresh (automotive)
• LVTTL-compatible inputs and outputs
• Single 3.3V ±0.3V power supply
Options
Marking
• Configurations
– 32 Meg x 4 (8 Meg x 4 x 4 banks)1
– 16 Meg x 8 (4 Meg x 8 x 4 banks)
– 8 Meg x 16 (2 Meg x 16 x 4 banks)
• Write recovery (tWR)
– tWR = 2 CLK
32M4
16M8
8M16
Notes:
Marking
TG
P
FB1
BB1
F4
B4
-753
-7E
-6A
None
L3
:G/:L
None
IT
AT1
1. Contact Micron for availability.
2. Off-center parting line.
3. Only available on Revision G.
A2
Table 1: Key Timing Parameters
CL = CAS (READ) latency
Speed Grade
Clock
Frequency (MHz)
Target tRCD-tRP-CL
-6A
167
3-3-3
18
18
18
-75
133
3-3-3
20
20
20
-7E
133
2-2-2
15
15
15
PDF: 09005aef8091e66d
128mb_x4x8x16_sdram.pdf - Rev. R 10/12 EN
1
tRCD
(ns)
tRP
(ns)
CL (ns)
Micron Technology, Inc. reserves the right to change products or specifications without notice.
© 1999 Micron Technology, Inc. All rights reserved.
Products and specifications discussed herein are subject to change by Micron without notice.
