MT58L64L32PT7.5 - 2Mbit Sync Burst SRAM 133MHz | Micron
N.º da peça: MT58L64L32PT7.5 ✗ Fim de vida| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $28.5 | $28,50 |
| 10 | $26.1 | $261,00 |
| 100 | $23.8 | $2.380,00 |
| 500 | $21.4 | $10.700,00 |
| 1.000 | $19.9 | $19.900,00 |
MT58L64L32PT7.5 Visão geral
A synchronous burst SRAM is a type of static random-access memory that uses an external clock to synchronize address, data, and control signals, providing deterministic zero-wait-state access for processors and controllers. Within the memory hierarchy, SRAM sits above DRAM in speed (no refresh required) and is commonly used as cache or high-speed buffer memory in power management and data-path subsystems. The Micron SYNCBURST family implements a pipelined architecture in which the address is registered on the clock edge, allowing a short clock-to-data cycle while sustaining full-bandwidth back-to-back transfers.
Key features of the MT58L64L32PT-7.5 include the 64K x 32 organization suited to 32-bit buses without byte-lane fan-out, 133 MHz operation with 4 ns clock-to-data access, burst address counter supporting linear and interleaved burst orders for x86 and PowerPC style bus protocols, and a synchronous burst control set (clock enable, address advance, output enable, byte write enable). The 3.3V core with LVTTL I/O simplifies interfacing with 1990s-to-2000s era CPUs, FPGAs, and ASICs.
The pipelined architecture registers inputs internally, trading one cycle of latency for higher sustainable clock frequency. Data valid timing is governed by the 4 ns access time relative to the clock edge, enabling 133 MHz (7.5 ns cycle) operation with standard setup and hold margins. JEDEC-standard 100-lead TQFP packaging with 0.5 mm lead pitch supports conventional reflow assembly.
Typical applications include cache memory for embedded PowerPC and MIPS processors, FPGA design buffers and look-up expansion memory, telecommunications and networking line-card buffers, and test/measurement instrumentation where deterministic latency matters more than density.
Design-wise, ensure all unused address inputs are properly driven and decouple VDD with 0.1 uF ceramics at each power pin; synchronous inputs must meet datasheet setup/hold times relative to CLK, and floating controls cause undefined operation.
This page synthesizes distributor pricing, drop-in family alternatives, and practical design notes not found in the manufacturer datasheet.
Alternativas drop-in para MT58L64L32PT7.5 — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com MT58L64L32PT7.5 (mesmo formato e footprint) — diferindo em Access Time, Memory Type, Organization.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
MT58L64L32PT-7.5A
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
MT58L64L32PT-6
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
MT58L64L32FT-10
✅ Drop-In✓ Em estoque
Consulte o preço
Ver ficha técnica →MT58L64L32FT-7.5
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
MT58L64L32DT-7.5
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
MT58L64L32PT7.5 Classificações máximas e características elétricas
| Tipo de memória | SRAM - Synchronous (SYNCBURST Pipelined) |
| Tamanho da memória | 2 Mbit |
| Organização da memória | 64K x 32 |
| Clock Frequency | 133 MHz |
| Access Time | 4 ns |
| Supply Voltage Range | 3.135 V to 3.6 V |
| Interface | Parallel |
| Encapsulamento | 100-TQFP (14 x 20.1 mm) |
| Tipo de montagem | Surface Mount |
| Lead Pitch | 0.5 mm |
| Memory Format | Volatile |
| I/O Type | LVTTL-compatible 3.3V |
| Manufacturer | Micron Technology (also listed under Samsung Semiconductor, Inc. marketplace listing) |
Guia de Configuração de Pinos do MT58L64L32PT7.5 100-tqfp (14 x 20.1 mm)
Configuração de pinos para MT58L64L32PT7.5 (pacote 100-tqfp (14 x 20.1 mm)). Este CI digital inclui GPIO, interfaces de comunicação (UART, SPI, I2C) e pinos de alimentação. Consulte o datasheet do fabricante para funções alternativas dos pinos e opções de configuração. Essencial para projeto de sistemas embarcados e layout de PCB.
Nenhum dado detalhado de pinagem disponível para MT58L64L32PT7.5.
Consulte a ficha técnica para a configuração completa dos pinos.
Aplicações típicas
MT58L64L32PT7.5 é adequado para 6 aplicaçãos: Embedded Processor Cache Memory, FPGA Design Buffer and Expansion Memory, Telecommunications Line-Card Buffering, Test and Measurement Instrumentation, Industrial Control and Legacy System Sustainment, Graphics and Video Frame Buffer Support.
Embedded Processor Cache Memory
The MT58L64L32PT7.5 serves as external L2 cache for embedded PowerPC, MIPS, and ARM processors of the 3.3V generation. Its 64K x 32 organization matches a full 32-bit data bus without byte-lane partitioning, and the 133 MHz pipelined burst interface with 4 ns clock-to-data access sustains zero-wait-state back-to-back burst reads over the linear/interleaved burst orders required by common CPU bus protocols. Placed directly on the processor's dedicated cache bus with short matched-length address traces, the SRAM registers the address internally, easing controller timing. The trade-off versus on-chip cache is added board area, but 2Mbit of deterministic SRAM was the standard expansion path for this processor class.
Recomendado
FPGA Design Buffer and Expansion Memory
FPGA designs frequently need fast external lookup, FIFO, or buffer memory beyond on-chip block RAM capacity. The MT58L64L32PT7.5 connects directly to a 3.3V LVCMOS/LVTTL FPGA bank because its 3.135V to 3.6V supply matches common I/O standards, eliminating level shifters. Implementing the burst controller (CLK, CEN, ADV, WE, OE) in FPGA fabric is straightforward, and the 4 ns access time supports a 133 MHz state machine with margins for trace delay on a conventional FR-4 board. Designers should budget clock-to-out plus board delay against the FPGA capture window; at 133 MHz the 7.5 ns cycle leaves workable but finite margin, so keep trace lengths under about 50 mm for source-synchronous capture.
Recomendado
Telecommunications Line-Card Buffering
Telecom and networking line cards of the 3.3V era used synchronous burst SRAM as packet buffers, statistics counters, and list-management memory. The MT58L64L32PT7.5's 64K x 32 array suits 32-bit-wide packet descriptors, and its fully synchronous interface aligns naturally with the fixed-clock pipeline of a framer or network processor. The 133 MHz operation supports OC-3/OC-12 class throughput on a 32-bit bus, and the byte-write enable scheme allows per-byte updates for header modification without read-modify-write cycles. Because latency is deterministic (one pipeline cycle), buffer management software can rely on fixed timing, which is harder to guarantee with asynchronous SRAM.
Recomendado
Test and Measurement Instrumentation
Oscilloscope, logic analyzer, and data-acquisition front ends need deep, fast capture memory with deterministic timing. The MT58L64L32PT7.5 provides 2Mbit of 133 MHz synchronous capture storage; its 4 ns access allows sample streaming from a 32-bit-wide acquisition path without wait states. In instruments, the pipelined architecture's fixed one-cycle latency simplifies trigger alignment logic because data position is exactly known relative to the clock. Designers should separate the memory's supply plane from analog acquisition circuitry to prevent digital switching noise coupling into sensitive analog channels, using a solid ground plane and localized 0.1 uF decoupling at each of the TQFP's supply pins.
Recomendado
Industrial Control and Legacy System Sustainment
Industrial controllers, motion systems, and legacy PLCs designed around the MT58L64L32 family require continued sourcing as the part is EOL. The MT58L64L32PT7.5's 3.3V LVTTL interface keeps it compatible with surviving 3.3V controller ASICs, and its 100-TQFP package supports standard reflow repair on existing boards. For sustainment, qualify the same-family variants (-7.5A, -6, FT-10) which share the identical footprint and pinout, allowing direct board drop-in without PCB respin. Stock strategy matters more than design here: secure verified date codes from authorized excess (Rochester Electronics) rather than unverified broker stock, and burn-in sample lots before fleet-wide replacement.
Recomendado
Graphics and Video Frame Buffer Support
Video and graphics subsystems of the late-1990s class used synchronous burst SRAM for line buffers, CLUT storage, and small frame caches. The MT58L64L32PT7.5's 32-bit-wide data port and 133 MHz burst capability sustain the multi-megapixel-per-second streaming required for standard-definition video, while the deterministic pipelined timing simplifies the pixel-clock domain crossing design. The 64K x 32 organization maps naturally onto 32-bit pixel words. Designers should drive the burst address counter in linear order for raster scan and reserve byte-write enables for color-keyed pixel updates, achieving efficient blended rendering without full-word read-modify-write overhead.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para MT58L64L32PT7.5 — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | MT58L64L32PT-7.5A | MT58L64L32PT-6 | MT58L64L32FT-10 |
|---|---|---|---|---|
| Package | 100-TQFP (14 x 20.1 mm) | 100-TQFP (14 x 20.1 mm) - same | 100-TQFP (14 x 20.1 mm) - same | 100-TQFP (14 x 20.1 mm) - same |
| Brand | Micron Technology | Micron Technology | Micron Technology | Micron Technology |
| Memory Organization | 64K x 32 | 64K x 32 | 64K x 32 | 64K x 32 |
| Memory Size | 2 Mbit | 2 Mbit | 2 Mbit | 2 Mbit |
| Clock Frequency | 133 MHz | 133 MHz | ~150 MHz class | 100 MHz class |
| Supply Voltage | 3.135 V to 3.6 V | 3.135 V to 3.6 V | 3.135 V to 3.6 V | 3.135 V to 3.6 V |
| Architecture | Synchronous pipelined burst (SYNCBURST) | Synchronous pipelined burst | Synchronous pipelined burst | Synchronous pipelined burst |
| Lifecycle Status | EOL | EOL | EOL | EOL |
Principais diferenciais
- Fastest standard grade in the verified family set at 133 MHz (vs MT58L64L32FT-10)
- 32-bit-wide organization eliminates byte-lane fan-out (vs MT58L64L32PT-7.5A)
- Trade-off: EOL status versus the -6 grade's extra margin (vs MT58L64L32PT-6)
Notas de projeto
Decouple each VDD pin of the 100-TQFP with a 0.1 uF ceramic placed within 3 mm of the pin, plus one 10 uF bulk capacitor per device. At 133 MHz, synchronous burst SRAM draws pulsed core current on every clock edge; a solid ground plane under the device is essential to keep ground bounce within LVTTL noise margins. Keep address and clock traces matched within 10 mm for source-synchronous capture and limit stub lengths on the shared data bus to prevent reflections at the 4 ns access-time edge rates.
The 4 ns clock-to-data output means edges fast enough to produce meaningful overshoot on 15 cm traces. Use series termination (22-33 ohm) on the SRAM clock and on data lines driving long shared buses. Synchronous control inputs (CLK, CEN, ADV, WE, OE, CE) must never float; tie unused enables to their inactive levels per the datasheet, since undefined control states at power-up can corrupt the burst counter or drive bus contention. Ensure the FPGA/ASIC output timing meets the datasheet setup and hold windows across temperature, not just at room.
This family is EOL, so lot-to-lot variance and counterfeit risk in broker channels are real concerns: request date codes, certificates of conformance, and sample verification before volume buys. Do not confuse the -7.5 speed grade with the -7.5A revision or the slower FT-10 grade when kitting spares; the FT-10 will fail timing in a 133 MHz system despite being footprint-identical. Finally, verify the actual operating temperature range printed on the device marking, since the family shipped in commercial and industrial temperature flows with different suffixes.
Informações de conformidade
Part predates RoHS (2006); compliance varies by date code and must be confirmed from the lot's certificate of conformance or Micron's environmental archive.
