MT48LC8M32B2B5-7 TR

The MT48LC8M32B2B5-7 TR is a 256 Mbit synchronous DRAM organized as 8M × 32 (2M × 32 × 4 banks) in a 90-ball VFBGA package. It implements a fully synchronous, pipelined SDRAM core with internal banks and a parallel memory interface.

Targeted for systems requiring PC100 functionality and commercial temperature operation, this device delivers a 143 MHz clock-grade timing (-7 speed grade), a 6 ns access time (CL = 3), programmable burst lengths, and standard +3.3 V supply operation (3.0 V–3.6 V).

Key Features

• Core / Architecture  Fully synchronous SDRAM with internal pipelined operation; column addresses can be changed every clock cycle and internal banks hide row access/precharge.
• Memory Organization & Capacity  256 Mbit capacity configured as 8M × 32 (2M × 32 × 4 banks) to support multi-bank access patterns.
• Performance & Timing  -7 speed grade: 143 MHz clock frequency and 6.0 ns access time (CL = 3). Supports CAS latencies of 1, 2, and 3 and a 14 ns write cycle time (word page).
• Burst & Command Flexibility  Programmable burst lengths (1, 2, 4, 8, or full page), Auto Precharge (including Concurrent Auto Precharge), Auto Refresh, and Self Refresh modes.
• Power & Voltage  Single-supply operation at +3.3 V ±0.3 V (3.0 V–3.6 V).
• Interface & I/O  Parallel memory interface with LVTTL-compatible inputs and outputs for standard signal levels.
• Refresh & Retention  64 ms auto-refresh interval implemented as 4,096 refresh cycles (15.6 µs/row) to maintain data integrity in refresh modes.
• Package & Temperature  90-ball VFBGA (8 mm × 13 mm) package; commercial operating temperature range 0°C to 70°C (TA).

Typical Applications

• PC100-compliant subsystems  Use in memory subsystems and modules where PC100 functionality is required, leveraging the device’s PC100 feature set.
• 3.3V SDRAM designs  Systems and boards that require SDRAM operation from a single +3.3 V supply (3.0 V–3.6 V).
• Space-constrained boards  Compact 90-ball VFBGA (8 mm × 13 mm) package suitable for designs with limited PCB area.

Unique Advantages

• Synchronous, pipelined operation: Column address changes every clock cycle and internal pipelining support efficient read/write sequencing.
• Flexible burst control: Programmable burst lengths (1, 2, 4, 8, full page) enable tuning for different access patterns and system needs.
• Banked memory architecture: Four internal banks (2M × 32 × 4 configuration) allow overlapping of row operations to improve effective throughput.
• Configurable timing: Support for CAS latencies 1, 2, and 3 provides timing flexibility across system designs.
• Comprehensive refresh modes: Auto Refresh and Self Refresh with a 4,096-cycle (64 ms) refresh scheme support power management and data retention.
• Compact FBGA package: 90-ball VFBGA (8 mm × 13 mm) minimizes PCB footprint while delivering a full 32-bit data bus.

Why Choose IC DRAM 256MBIT PAR 90VFBGA?

The MT48LC8M32B2B5-7 TR combines a synchronized, pipelined SDRAM architecture with a 256 Mbit ×32 organization and a compact 90-ball VFBGA package to meet design requirements for PC100-class timing and 3.3 V operation. Its programmable burst lengths, internal banks, and multiple CAS latency options provide design flexibility for a range of performance profiles.

Specified for commercial temperature operation (0°C to 70°C) and supported by a comprehensive feature set including Auto/Concurrent Auto Precharge, Auto Refresh, and Self Refresh, this Micron SDRAM device is suitable for systems that require standard SDRAM functionality in a space-efficient package.

Request a quote or submit an inquiry for pricing and availability of the MT48LC8M32B2B5-7 TR.