MT48LC16M16A2BG-75 IT:D - 256Mbit SDRAM 133MHz | Micron
N.º da peça: MT48LC16M16A2BG-75 IT:D ✗ Fim de vida| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $7.05 | $7,05 |
| 10 | $6.4 | $64,00 |
| 100 | $5.65 | $565,00 |
| 500 | $4.95 | $2.475,00 |
| 1.000 | $4.3 | $4.300,00 |
MT48LC16M16A2BG-75 IT:D Visão geral
An SDRAM (Synchronous Dynamic Random-Access Memory) is a type of volatile DRAM that synchronizes all operations to a system clock, enabling pipelined command execution and higher throughput than asynchronous DRAM. SDRAM sits within the memory IC hierarchy: SDRAM -> DRAM -> volatile memory -> memory IC -> semiconductor. The MT48LC16M16A2 is a member of Micron's legacy 256Mb SDRAM family (16Mx16, 32Mx8, and 64Mx4 configurations) introduced in the late 1990s and now classified as obsolete by Micron.
Key features include a 133 MHz synchronous interface with all address and control signals registered on the positive clock edge, internal pipelined architecture that allows column-address changes every clock cycle, programmable CAS latency (2 or 3), burst read/write modes, and auto-refresh plus self-refresh support. The 54-VFBGA package provides a compact footprint suitable for space-constrained embedded designs, while the parallel 16-bit data bus delivers up to 266 MB/s peak bandwidth.
Typical applications include legacy networking equipment, industrial control systems, point-of-sale terminals, telecommunications infrastructure, and embedded computing platforms that require reliable, high-bandwidth main memory. Designers should consult the Micron SDRAM datasheet for refresh scheduling, mode-register configuration, and PC133 timing parameters. For new designs, Micron recommends migrating to DDR/DDR2/DDR3 or newer DRAM families, as this part is in Micron's obsolete product catalog with limited long-term availability.
Alternativas drop-in para MT48LC16M16A2BG-75 IT:D — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
MT48LC16M16A2BG-75:D
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
MT48LC16M16A2BG-75 IT:D TR
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
MT48LC16M16A2B4-6A IT:G TR
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
MT48LC16M16A2BG-75 AT
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
K4S641632D
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
H57V2562GTR
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
MT48LC16M16A2BG-75 IT:D Classificações máximas e características elétricas
| Tipo de memória | SDRAM (Synchronous DRAM) |
| Tamanho da memória | 256 Mbit |
| Organização da memória | 16M x 16 |
| Frequência máxima de clock | 133 MHz |
| Access Time | 5.4 ns |
| Speed Grade | -75 (7.5 ns) |
| Interface | Parallel |
| Largura do barramento de dados | 16 bit |
| Tensão de alimentação | 3.0 V to 3.6 V (3.3 V nominal) |
| Temperatura de operação | -40C to +85C (Industrial, IT grade) |
| Encapsulamento | 54-VFBGA (8x14) |
| Tipo de montagem | Surface Mount |
| Latência CAS | Programmable, 2 or 3 |
| Refresh | Auto-refresh and self-refresh |
| Compliance | PC100- and PC133-compliant |
| Die Revision | :D |
Configuração de pinos do MT48LC16M16A2BG-75 IT:D
| Pino A1 | DQ0 — Data I/O line 0 |
| Pino A2 | DQ1 — Data I/O line 1 |
| Pino A3 | DQ2 — Data I/O line 2 |
| Pino A4 | DQ3 — Data I/O line 3 |
| Pino A5 | DQ4 — Data I/O line 4 |
| Pino A6 | DQ5 — Data I/O line 5 |
| Pino A7 | DQ6 — Data I/O line 6 |
| Pino A8 | DQ7 — Data I/O line 7 |
| Pino B1 | VSS — Ground |
| Pino B2 | VDDQ — DQ power supply (3.3V) |
| Pino B3 | DQ8 — Data I/O line 8 |
| Pino B4 | DQ9 — Data I/O line 9 |
| Pino B5 | DQ10 — Data I/O line 10 |
| Pino B6 | DQ11 — Data I/O line 11 |
| Pino B7 | DQ12 — Data I/O line 12 |
| Pino B8 | DQ13 — Data I/O line 13 |
| Pino C1 | VDD — Core power supply (3.3V) |
| Pino C2 | DQ14 — Data I/O line 14 |
| Pino C3 | DQ15 — Data I/O line 15 |
| Pino C4 | VSSQ — DQ ground |
| Pino C5 | NC — Not connected (per datasheet) |
| Pino C6 | NC — Not connected (per datasheet) |
| Pino C7 | A0 — Address input 0 |
| Pino C8 | A1 — Address input 1 |
| Pino D1 | A2 — Address input 2 |
| Pino D2 | A3 — Address input 3 |
| Pino D3 | A4 — Address input 4 |
| Pino D4 | A5 — Address input 5 |
| Pino D5 | A6 — Address input 6 |
| Pino D6 | A7 — Address input 7 |
| Pino D7 | A8 — Address input 8 |
| Pino D8 | A9 — Address input 9 |
| Pino E1 | A10 — Address input 10 |
| Pino E2 | A11 — Address input 11 |
| Pino E3 | A12 — Address input 12 |
| Pino E4 | BA0 — Bank address 0 |
| Pino E5 | BA1 — Bank address 1 |
| Pino E6 | RAS# — Row address strobe (active low) |
| Pino E7 | CAS# — Column address strobe (active low) |
| Pino E8 | WE# — Write enable (active low) |
| Pino F1 | CS# — Chip select (active low) |
| Pino F2 | CKE — Clock enable |
| Pino F3 | CLK — System clock input |
| Pino F4 | DQM — Data mask |
| Pino F5 | NC — Not connected (per datasheet) |
| Pino F6 | NC — Not connected (per datasheet) |
| Pino F7 | VSS — Ground |
| Pino F8 | VDD — Core power supply (3.3V) |
| Pino G1 | VDDQ — DQ power supply (3.3V) |
| Pino G2 | VSSQ — DQ ground |
| Pino G3 | NC — Not connected (per datasheet) |
| Pino G4 | NC — Not connected (per datasheet) |
| Pino G5 | NC — Not connected (per datasheet) |
| Pino G6 | NC — Not connected (per datasheet) |
| Pino G7 | NC — Not connected (per datasheet) |
| Pino G8 | NC — Not connected (per datasheet) |
Aplicações típicas
MT48LC16M16A2BG-75 IT:D é adequado para 6 aplicaçãos: Legacy Networking Equipment, Industrial Control Systems, Point-of-Sale Terminals, Telecommunications Infrastructure, Embedded Computing Platforms, Medical Instrumentation.
Legacy Networking Equipment
The MT48LC16M16A2BG-75 IT:D is well-suited for legacy networking routers, switches, and base-station controllers that require 256 Mbit of main memory with PC133 timing. The 133 MHz synchronous interface delivers up to 266 MB/s bandwidth, sufficient for packet buffering, routing table storage, and control-plane processing in older telecom infrastructure. Its 54-VFBGA package enables dense PCB layouts in compact chassis, while the industrial temperature range (-40C to +85C) ensures reliable operation in outdoor-cabinet and uncontrolled-ventilation environments. The parallel 16-bit data bus simplifies integration with legacy network processors and PowerPC/ARM controllers that lack DDR memory controllers.
Recomendado
Industrial Control Systems
In PLCs, SCADA systems, and factory automation controllers, the MT48LC16M16A2BG-75 IT:D provides reliable working memory for real-time operating systems and data acquisition. The -40C to +85C industrial temperature grade handles factory-floor thermal extremes, while the PC133 compliance guarantees deterministic read/write timing for deterministic control loops. Its pipelined SDRAM architecture minimizes latency for high-speed sensor polling and motion-control trajectory calculations. The 16Mx16 organization allows direct connection to 16-bit microcontrollers and DSPs without bus-width conversion logic.
Recomendado
Point-of-Sale Terminals
The MT48LC16M16A2BG-75 IT:D serves as main memory in legacy POS terminals, electronic cash registers, and payment-processing devices where its 256 Mbit capacity supports transaction buffering, receipt printing buffers, and small display framebuffers. The compact 54-VFBGA package suits the slim mechanical envelopes typical of countertop POS hardware, while the industrial temperature grade handles the warm retail environment near ovens and refrigeration units. SDRAM's synchronous design eliminates the wait-state complexity that asynchronous DRAM introduced, simplifying firmware development for embedded POS processors.
Recomendado
Telecommunications Infrastructure
In legacy PBX systems, VoIP gateways, and base-station controllers, the MT48LC16M16A2BG-75 IT:D provides the working memory for call-processing firmware, voice codec buffers, and signaling-stack data structures. The 133 MHz bus bandwidth is adequate for G.729 and G.711 voice packet processing in channel banks and digital cross-connect systems. The -40C to +85C temperature range supports outdoor telecom cabinets and central-office environments without climate control. SDRAM's auto-refresh and self-refresh modes simplify power-management firmware for battery-backed telecom equipment.
Recomendado
Embedded Computing Platforms
Single-board computers, VME/cPCI industrial computers, and embedded PC/104 systems use the MT48LC16M16A2BG-75 IT:D as main memory for x86 or PowerPC SBCs that pre-date DDR support. The 54-VFBGA footprint fits the standard SODIMM-style layouts of legacy embedded motherboards, and the 3.3V supply matches the power rails of older chipsets without requiring level translation. For embedded Linux or VxWorks systems running in industrial environments, the wide temperature grade ensures the OS and applications remain stable across factory thermal cycles.
Recomendado
Medical Instrumentation
The MT48LC16M16A2BG-75 IT:D is used in legacy patient monitors, ultrasound imaging systems, and laboratory analyzers as image-acquisition and display-frame memory. The 133 MHz bandwidth supports real-time ultrasound beamformer data paths and oscillographic waveform displays. Its wide temperature range accommodates the warm enclosures of bedside monitors and the climate-controlled environments of central diagnostic stations. The synchronous SDRAM interface allows deterministic capture-to-display latency critical for diagnostic-image quality, while the compact VFBGA package enables miniaturized portable medical device designs.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para MT48LC16M16A2BG-75 IT:D — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | MT48LC16M16A2BG-75:D | MT48LC16M16A2BG-75 IT:D TR | MT48LC16M16A2B4-6A IT:G TR | MT48LC16M16A2BG-75 AT | K4S641632D | H57V2562GTR |
|---|---|---|---|---|---|---|---|
| Package | 54-VFBGA (8x14) | 54-VFBGA (8x14) - same | 54-VFBGA (8x14) - same | 54-VFBGA (8x14) - same | 54-VFBGA (8x14) - same | 54-VFBGA (8x14) - same | 54-VFBGA (8x14) - same |
| Brand | Micron Technology | Micron Technology | Micron Technology | Micron Technology | Micron Technology | Samsung Electronics | SK Hynix |
| Memory Size | 256 Mbit (16M x 16) | 256 Mbit (16M x 16) | 256 Mbit (16M x 16) | 256 Mbit (16M x 16) | 256 Mbit (16M x 16) | 256 Mbit (16M x 16) | 256 Mbit (16M x 16) |
| Speed Grade | -75 (7.5 ns, 133 MHz) | -75 (7.5 ns, 133 MHz) | -75 (7.5 ns, 133 MHz) | -6A (6 ns, 166 MHz) | -75 (7.5 ns, 133 MHz) | PC133-compatible | PC133-compatible |
| Supply Voltage | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V |
| Data Bus Width | 16 bit | 16 bit | 16 bit | 16 bit (x16 organization) | 16 bit | 16 bit | 16 bit |
Principais diferenciais
- Industrial temperature grade for harsh environments (vs MT48LC16M16A2BG-75:D)
- Obsolete status with documented drop-in cross-references (vs K4S641632D (Samsung))
- PC133 compliance with 133 MHz verified timing (vs MT48LC16M16A2B4-6A IT:G TR)
Notas de projeto
Estimated: the MT48LC16M16A2BG-75 IT:D draws approximately 100-150 mA during active read/write at 133 MHz, with peak surges during bank activation. Provide a minimum 10uF bulk decoupling capacitor plus 0.1uF high-frequency bypass on each VDD/VDDQ pin group. The 3.3V supply must remain within 3.0-3.6V during transients to avoid data corruption or latch-up. Use a low-dropout regulator with at least 200 mA capacity and less than 50 mV ripple for reliable PC133 compliance.
The 54-VFBGA package has 0.8 mm ball pitch - route signals on inner PCB layers with micro-via escape. Matched-impedance routing (50 ohm single-ended) is required for CLK, DQ, and control signals. Keep trace lengths matched within 1 cm to avoid clock-data skew. Place all decoupling capacitors on the same PCB layer as the BGA, directly under or adjacent to the balls. Provide a continuous ground plane under the BGA to control return-current paths and minimize EMI.
Common pitfalls with the MT48LC16M16A2BG-75 IT:D include: (1) failing to perform the proper power-up initialization sequence (PRECHARGE, AUTO-REFRESH, MODE-REGISTER SET), (2) incorrect CAS latency selection for the operating frequency - use CAS=3 at 133 MHz, CAS=2 at 100 MHz, (3) neglecting the 64 ms refresh interval (4K refresh cycles for 256 Mbit), (4) using unmatched CLK-to-DQS skew causing setup/hold violations, and (5) omitting self-refresh entry/exit sequencing during power-down modes.
Informações de conformidade
Compliance data not provided in verified web data; values set to 'unknown' rather than assumed. This is an obsolete part - consult Micron's obsolete product documentation for any historical compliance certifications.
