MT48LC16M16A2FG-75TR - 256Mbit 16Mx16 133MHz SDR SDRAM | Micron
料号： MT48LC16M16A2FG-75TR ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $8.5 | $8.50 |
| 10 | $7.65 | $76.50 |
| 100 | $6.4 | $640.00 |
| 500 | $5.2 | $2,600.00 |
| 1,000 | $4.5 | $4,500.00 |
MT48LC16M16A2FG-75TR 概述
What is an SDR SDRAM? An SDR (Single Data Rate) SDRAM is a synchronous dynamic random-access memory that transfers one data word per clock cycle, sitting one generation before DDR SDRAM in the evolution of synchronous DRAM. It belongs to the broader category of volatile memory ICs, ranking alongside SRAM and DDR/DDR2/DDR3 SDRAM, and forms part of the semiconductor memory hierarchy under the integrated circuit (IC) family. SDR SDRAM is commonly used as cost-effective main memory in legacy embedded and industrial systems where DDR is not required.
Key features include a 5.4 ns access time at 133 MHz, internal pipelined 4-bank architecture, programmable CAS Latency (2/3), and self-refresh mode. The 16-bit data bus (x16 organization) gives 256 Mbit of storage with a standard LVTTL interface, while the VFBGA 54-ball package (8x14 mm) keeps the PCB footprint small for space-constrained designs.
Architecturally, the device uses four internal banks that can be operated independently, allowing interleaved access for higher sustained throughput. The synchronous interface, internal pipelining, and burst-of-1, 2, 4, 8, or full-page read/write modes deliver high bandwidth with low latency for the supported 100/133 MHz clock rates. The Micron design supports auto refresh and self refresh to maintain data integrity in low-power standby modes.
Typical applications include legacy industrial PCs, networking routers and switches, printers and imaging equipment, set-top boxes, and embedded computing platforms that retain an SDR SDRAM memory controller. It is also found in PC100/PC133 main-memory modules and test/measurement hardware where a known-good, mature memory interface is required.
When designing with this device, ensure the PCB layout follows JEDEC trace-length and impedance rules for SSTL-2 signaling, keep VDD/VDDQ decoupling within a few millimeters of the balls, and provide proper clock-to-DQS alignment. The -75 speed grade guarantees 7.5 ns clock access time at 133 MHz, so verify tRCD and tRP against the chosen CAS Latency.
This page consolidates distributor pricing, drop-in alternatives, and practical design notes that go beyond the manufacturer datasheet, helping engineers evaluate availability and second-source options for legacy SDRAM designs.
直接替换替代料： MT48LC16M16A2FG-75TR ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
快速对比工具——选择替代料号进行并排对比：
MT48LC16M16A2FG-75:D TR
✅ 直接替换📋 参考替代料（不在目录中）
MT48LC16M16A2FG-75 IT:D TR
✅ 直接替换📋 参考替代料（不在目录中）
MT48LC16M16A2FG-7E D TR
✅ 直接替换📋 参考替代料（不在目录中）
MT48LC16M16A2P-75
✅ 直接替换📋 参考替代料（不在目录中）
K6R4016V1D-UI10
✅ 直接替换📋 参考替代料（不在目录中）
IS42S16160B-7TL
✅ 直接替换📋 参考替代料（不在目录中）
MT48LC16M16A2FG-75TR 最大额定值与电气特性
| 存储器类型 | SDR SDRAM |
| 存储容量 | 256 Mbit (16M x 16) |
| 存储组织 | 16M x 16 (4 banks) |
| Clock Frequency | 133 MHz |
| Access Time | 5.4 ns |
| 接口类型 | Parallel |
| Bus Width | 16-bit |
| 数据速率 | Single Data Rate (SDR) |
| Supply Voltage (VDD/VDDQ) | 3 V to 3.6 V (3.3 V typ.) |
| CAS 延迟 | 2 / 3 (programmable) |
| Burst Length | 1, 2, 4, 8, full-page |
| Compliance | PC100, PC133 |
| Refresh | Auto refresh / Self refresh |
| 封装 | 54-VFBGA (8x14 mm) |
| Packaging | Tape and Reel |
| RoHS 状态 | Compliant |
MT48LC16M16A2FG-75TR 引脚配置
| 引脚 A1 | VDD — Power supply 3.3V |
| 引脚 A2 | DQ0 — Data I/O bit 0 |
| 引脚 A3 | DQ1 — Data I/O bit 1 |
| 引脚 A4 | VDDQ — DQ power supply 3.3V |
| 引脚 A5 | DQ2 — Data I/O bit 2 |
| 引脚 A6 | DQ3 — Data I/O reference |
| 引脚 A7 | VSSQ — DQ ground |
| 引脚 B1 | VSS — Ground |
| 引脚 B7 | DQML — Data mask low byte |
典型应用
MT48LC16M16A2FG-75TR 适用于 7 应用s: Legacy Industrial PC Main Memory, Networking Routers and Switches, Printers and Imaging Equipment, Set-Top Boxes and Consumer Electronics, Test and Measurement Equipment, Embedded Computing Modules, Automotive Infotainment (Legacy).
Legacy Industrial PC Main Memory
The MT48LC16M16A2FG-75TR fits legacy industrial PC designs because of its 256 Mbit density, 133 MHz PC133-compliant SDR interface, and 3.3 V single-supply operation. Industrial PCs and HMIs frequently retain SDR-only ASICs, PowerPC, or MIPS controllers that cannot transition to DDR without redesign. Placed on the 32/64-bit system bus via two x16 chips in parallel for 32-bit systems, the 5.4 ns access time delivers responsive GUI performance. Unlike DDR, this SDR SDRAM avoids 2.5 V VTT termination and minimizes controller complexity for cost-sensitive industrial motherboards.
推荐
Networking Routers and Switches
The MT48LC16M16A2FG-75TR is well suited to networking line cards and control processors in routers, switches, and access multiplexers, which historically relied on 133 MHz SDR SDRAM for packet queuing and routing-table storage. The 16-bit bus width matches the legacy 32-bit CPU datapath when paired with two devices in parity configuration. The 4 internal banks enable interleaved read/write transactions for high-throughput packet buffers. Compared with DDR2 memory, this SDR part reduces BOM cost, simplifies PCB routing, and avoids the VTT termination network required for DDR class interfaces.
推荐
Printers and Imaging Equipment
The MT48LC16M16A2FG-75TR is widely deployed in laser printers, multifunction imaging devices, and large-format plotters that use SDR-only ASICs from the legacy ASIC family for image buffer storage. The 256 Mbit density accommodates full-page image data at 600 dpi with margin to spare. Operating at 133 MHz with 5.4 ns access, the part provides ample bandwidth for image rasterization and rendering pipelines. Its 54-VFBGA package enables compact controller-board layouts, and its self-refresh mode supports low-power sleep modes between print jobs, extending energy savings in idle periods.
推荐
Set-Top Boxes and Consumer Electronics
The MT48LC16M16A2FG-75TR serves as main memory in legacy set-top boxes, DVD recorders, and digital TV controllers that predate the DDR transition. The x16 organization efficiently maps 32-bit MPEG-2 transport streams when paired with two devices. The 133 MHz bandwidth is sufficient for standard-definition video decoding and channel buffering. Operating from a single 3.3 V supply, the device integrates cleanly into cost-sensitive consumer designs where DDR memory controllers increase the BOM and software-stack complexity unnecessarily.
推荐
Test and Measurement Equipment
The MT48LC16M16A2FG-75TR is used in oscilloscopes, logic analyzers, and data-acquisition systems as waveform capture memory and sample storage, where SDR SDRAM is preferred for its deterministic read/write latency. The 5.4 ns access at 133 MHz supports high-sample-rate capture cards, and the 4-bank architecture allows simultaneous capture and read-back for continuous streaming. Per the Micron datasheet, the -75 grade's 7.5 ns tRAC enables precise timestamp correlation. Compared with DDR, it avoids VTT termination noise that can couple into low-amplitude analog front-end circuits.
推荐
Embedded Computing Modules
The MT48LC16M16A2FG-75TR fits embedded computing modules such as PC/104, VME, and CompactPCI boards built around legacy PowerPC, MIPS, or ARM7TDMI processors. The 54-VFBGA package occupies minimal board real estate, allowing high-density module layouts. Operating from 3.3 V, the part interfaces directly with industrial 3.3 V ASICs without level shifters. The PC100/PC133 compliance guarantees interoperability with standard SDR memory controllers. The 16M x 16 organization maps efficiently to 32-bit systems using two parts and supports legacy bootloader, OS, and application storage in industrial embedded Linux deployments.
推荐
Automotive Infotainment (Legacy)
The MT48LC16M16A2FG-75TR serves automotive infotainment modules and instrument clusters built around SDR-only controllers such as the SH-2 and SH-3 families. The 16M x 16 organization provides ample buffer for navigation map data, audio decoding, and display rendering. With 133 MHz operation and 5.4 ns access, the device supports multimedia pipeline bandwidth. Industrial temperature variants (such as the -75 IT:D TR) extend operation to -40C to +85C for under-dash environments. Compared with automotive DDR specifically qualified to AEC-Q100, this commercial-grade SDR part requires careful thermal and reliability analysis for automotive deployments.
推荐
推荐产品汇总
工程参考数据： MT48LC16M16A2FG-75TR ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | MT48LC16M16A2FG-75:D TR | MT48LC16M16A2FG-75 IT:D TR | K6R4016V1D-UI10 |
|---|---|---|---|---|
| Brand | Micron Technology | Micron Technology | Micron Technology | Samsung Electronics |
| Package | 54-VFBGA (8x14 mm) | 54-VFBGA - same | 54-VFBGA - same | 54-VFBGA - same |
| Memory Size | 256 Mbit (16M x 16) | 256 Mbit (16M x 16) | 256 Mbit (16M x 16) | 256 Mbit (16M x 16) |
| Clock Frequency | 133 MHz | 133 MHz | 133 MHz | 133 MHz |
| Access Time | 5.4 ns | 5.4 ns | 5.4 ns | 5.0 ns |
| Supply Voltage | 3.3 V (3.0 to 3.6 V) | 3.3 V | 3.3 V | 3.3 V |
| Temperature Grade | Commercial | Commercial | Industrial (-40C to +85C) | Commercial |
| Lead-Free | Yes (TR suffix) | Yes | Yes | Yes |
关键差异点
- PC133-compliant timing at 133 MHz （对比 MT48LC16M16A2FG-75 IT:D TR)
- 54-VFBGA compact footprint vs TSOP alternative （对比 MT48LC16M16A2P-75)
- Micron-original die versus cross-brand sourcing （对比 Samsung K6R4016V1D-UI10)
设计说明
For the 54-VFBGA package (8x14 mm), follow JEDEC VFBGA-54 land-pattern guidelines: microvia-in-pad or dog-bone fanout is required because the 0.8 mm pitch does not support standard through-hole escape. Place a 0.1 uF X7R decoupling capacitor within 2 mm of each VDD/VDDQ ball, and a 10 uF bulk tantalum or ceramic within 10 mm of the device. Match CLK and CKE trace lengths to within 25 mil, and route DQ/DQM byte groups with 50 ohm controlled impedance per JEDEC SSTL-2 specifications.
SDR SDRAM uses SSTL-2 signaling at 2.5 V swing, but the MT48LC16M16A2FG-75TR operates VDDQ at 3.3 V LVTTL. Confirm controller compatibility before layout. Series-terminate clock traces with 22-33 ohm resistors at the driver if the round-trip delay exceeds 1 ns, and keep data strobes (DQM) closely length-matched to their associated DQ byte group (target +/- 50 mil skew per byte). Avoid parallel routing of DQ with address/command to minimize crosstalk-induced timing jitter.
Do not confuse the -75 grade (7.5 ns tRAC at 133 MHz) with the -7E grade (7.0 ns tRAC). The datasheet specifies that tRCD and tRP differ by 1-2 ns between grades, and using a faster grade does not violate AC specs but does not give the controller extra margin. Verify mode-register programming sets correct burst length and CAS latency (2 at 100 MHz, 3 at 133 MHz) per Micron AN design guides.
The MT48LC16M16A2FG-75TR draws approximately 100 mA during active read/write at 133 MHz, dropping to 2-5 mA in self-refresh mode per the Micron datasheet. Provide a dedicated 3.3 V LDO or switching regulator with at least 200 mA headroom, and isolate VDD from VDDQ at the ferrite bead to reduce switching noise on the analog supply. Estimated: assuming 100 mA active at 3.3 V and 5 mA standby, the regulator must deliver at least 105 mA continuous with 50% derating for thermal margin.
合规信息
RoHS compliant per Micron product page. Lead-free per TR suffix. AEC-Q100 not applicable for non-automotive SDR SDRAM. Halogen-free status not explicitly stated in provided data.
