MT48LC4M16A2P-75:G TR

The MT48LC4M16A2P-75:G TR is a 64 Mbit synchronous DRAM (SDRAM) device organized as 4M × 16 with four internal banks and a parallel memory interface. It is supplied in a 54-pin TSOP II (0.400", 10.16 mm width) package and operates from a 3.0 V to 3.6 V supply.

Designed for systems requiring PC66/PC100/PC133-compliant SDRAM timing, the device supports fully synchronous, pipelined operation with programmable burst lengths and auto/precharge/refresh options. Datasheet notes indicate this device is not recommended for new designs.

Key Features

• Memory Core  64 Mbit SDRAM organized as 4M × 16 with four internal banks and bank addressing via BA0/BA1.
• Timing and Performance  PC66-, PC100-, and PC133-compliant; 133 MHz clock frequency and a listed access time of 5.4 ns. Internal pipelined operation allows column address changes each clock cycle.
• Burst and Refresh  Programmable burst lengths of 1, 2, 4, 8 or full page, with Auto Precharge (including concurrent Auto Precharge), Auto Refresh, and standard and low-power Self Refresh modes. 4,096-cycle refresh (64 ms).
• Interface and I/O  Fully synchronous with all signals registered on the positive edge of the system clock; LVTTL-compatible inputs and outputs.
• Power  Single +3.3 V ±0.3 V power supply (specified operating range 3.0 V–3.6 V) and support for self-refresh low-power mode.
• Package and Temperature  54-pin TSOP II (400 mil) package, 10.16 mm width, with commercial operating temperature range 0 °C to +70 °C.
• Reliability and Compatibility  Options and timing variants documented in the datasheet; device marking and timing options are defined (e.g., -75 timing).

Typical Applications

• System Memory  Use as parallel SDRAM system memory where a 64 Mbit x16 SDRAM with PC133-compatible timing is required.
• Buffered Storage  Suitable for designs that need pipelined, burst-capable parallel memory for intermediate buffering and data throughput.
• Legacy and Retrofit Designs  Appropriate for maintaining or repairing equipment designed around 54-pin TSOP II parallel SDRAM packages and PC133 timing.

Unique Advantages

• Standards-compatible timing: PC66/PC100/PC133 compliance simplifies integration into systems that expect standard SDRAM timing.
• Flexible burst operation: Programmable burst lengths (1, 2, 4, 8, full page) enable tailoring transfers for throughput or latency needs.
• Banked, pipelined architecture: Four internal banks and internal pipelined operation help hide row access/precharge times and support column-address changes every clock cycle.
• Power management modes: Auto Refresh and both standard and low-power Self Refresh modes provide options for reducing power during idle periods.
• Footprint for existing designs: 54-pin TSOP II (400 mil) package matches designs using 10.16 mm width TSOP components for straightforward board-level replacement.
• Commercial temperature range: Specified for 0 °C to +70 °C operation to match typical commercial-grade applications.

Why Choose MT48LC4M16A2P-75:G TR?

This MT48LC4M16A2P-75:G TR SDRAM delivers a compact, standards-aligned 64 Mbit parallel memory option with PC133-capable timing, programmable burst operation, and multiple refresh/power modes. Its 54-pin TSOP II package and 3.0 V–3.6 V supply make it suitable for designs that require a parallel x16 SDRAM footprint and conventional 3.3 V system rails.

Engineers maintaining or upgrading equipment that relies on parallel SDRAM can rely on the device’s documented timing options, banked architecture, and self-refresh capabilities for predictable integration. Refer to the device datasheet for detailed timing and pin-assignment information; note that the datasheet indicates this device is not recommended for new designs.

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