JBL MS-8, Руководство по обслуживанию

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64Mb: x32 SDRAM
Features
Synchronous DRAM
MT48LC2M32B2 – 512K x 32 x 4 banks
For the latest data sheet, refer to Micron’s Web site
Features
• PC100 functionality
• 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: 1, 2, 4, 8, or full page
• Auto precharge, includes concurrent auto precharge,
and auto refresh modes
• Self refresh mode (not available on AT devices)
• Refresh
– 64ms, 4,096-cycle refresh (15.6µs/row)
(commercial, industrial)
– 16ms, 4,096-cycle refresh (3.9µs/row)
(automotive)
• LVTTL-compatible inputs and outputs
• 3.3V ±0.3V power supply
• Supports CAS latency (CL) of 1, 2, and 3
Notes: 1. Off-center parting line.
2. Available on -6 and -7.
3. Contact Micron for product availability.
Options
Marking
• Configuration
– 2 Meg x 32 (512K x 32 x 4 banks) 2M32B2
• Plastic package – OCPL
1
– 86-pin TSOP II (400 mil) TG
– 86-pin TSOP II (400 mil) Pb-free P
– 90-ball VFBGA (8mm x 13mm) Pb-free B5
• Timing (cycle time)
– 5ns (200 MHz) -5
– 5.5ns (183 MHz) -55
– 6ns (166 MHz) -6
– 7ns (143 MHz) -7
• Die revision :G
• Operating temperature range
– Commercial (0° to +70°C) None
– Industrial (–40°C to +85°C) IT
2
– Automotive (–40°C to +105°C) AT
3
Notes: 1. FBGA Device Decode: http://
www.micron.com/support/FBGA/FBGA.asp
Part Number Example:
MT48LC2M32B2P-7:G
Table 1: Address Table
2 Meg x 32
Configuration 512K x 32 x 4 banks
Refresh count 4K
Row addressing
2K (A0–A10)
Bank addressing
4 (BA0, BA1)
Column addressing 256 (A0–A7)
Table 2: Key Timing Parameters
CL = CAS (READ) latency
Speed
Grade Clock
Frequency
Access
Time
Setup
Time
Hold
Time CL = 3
-5 200 MHz 4.5ns 1.5ns 1ns
-55 183 MHz 5ns 1.5ns 1ns
-6 166 MHz 5.5ns 1.5ns 1ns
-7 143 MHz 5.5ns 2ns 1ns
Table 3: 64Mb (x32) SDRAM Part Number
Part Number Architecture
MT48LC2M32B2TG
2 Meg x 32
MT48LC2M32B2P 2 Meg x 32
MT48LC2M32B2B5
1
2 Meg x 32
MS-8
37