MT47H64M16HR-25E IT:H - 1Gb DDR2 SDRAM 400MHz 84-FBGA | Micron
MPN: MT47H64M16HR-25E IT:H ✓ Hoạt độngMT47H64M16HR-25E IT:H Tóm tắt
What is DDR2 SDRAM? DDR2 (Double Data Rate 2) Synchronous DRAM is the second generation of DDR memory technology, succeeding DDR1. It uses a 4n-bit prefetch architecture (vs 2n-bit in DDR1) to double the data rate per I/O pin without increasing the core clock frequency. Within the broader memory taxonomy, DDR2 SDRAM sits under DRAM -> volatile memory -> semiconductor memory. Compared with DDR3, DDR2 operates at lower voltages (1.8 V vs 1.25 V nominal) and lower data rates, but remains widely deployed in legacy industrial, networking, and embedded designs where long lifecycles and proven reliability outweigh the need for maximum bandwidth.
Key features of the MT47H64M16HR-25E IT:H include the JEDEC-standard 1.8 V I/O (SSTL_18-compatible) interface, differential data strobe (DQS, DQS#) for robust signal capture, and a duplicate output option for reduced loading. The 4n-bit prefetch architecture transfers 4 data words per internal clock cycle, achieving 800 MT/s effective data rate at the 400 MHz clock speed. The 84-ball TFBGA package is footprint-compatible with the broader MT47H family, enabling PCB reuse across density options.
The MT47H family is built on a CMOS process with on-die termination (ODT) and programmable CAS latency (CL), and supports self-refresh mode for low-power standby. The IT:H suffix designates the industrial temperature grade (-40C to +85C) with RoHS-compliant lead-free packaging, making the part suitable for harsh-environment and long-lifecycle applications where consumer-grade parts would fail.
Typical applications include networking line cards and switches, industrial controllers and HMI panels, automotive infotainment systems, printer imaging buffers, and legacy embedded computing platforms. The 400 MHz / 800 MT/s data rate is sufficient for Gigabit Ethernet frame buffers, video processing pipelines, and OS image storage in mid-range embedded systems.
When designing with this device, ensure the host controller supports DDR2 timing parameters (tRCD, tRP, tRFC) and that the PCB layer stack-up is tuned for 1.8 V SSTL_18 signaling with controlled impedance. Use matched-length routing for the DQS/DQS# differential pair and follow JEDEC SSTL_18 termination guidelines. The IT:H temperature grade supports industrial environments; for automotive applications requiring -40C/+105C, evaluate the MT47H64M16HR-25E AIT:H variant instead.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet alone, providing an information-gain reference for engineers specifying DDR2 memory.
Bộ thay thế dễ dàng lắp đặt cho MT47H64M16HR-25E IT:H — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với MT47H64M16HR-25E IT:H (cùng hình factor và footprint) — khác nhau ở Clock Frequency, Memory Type, Operating Temperature, Organization.
MT47H64M16HR-25E AIT:H
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MT47H64M16HR-25E:H
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MT47H64M16HR-25:H
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MT47H64M16NF-25E IT:H
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MT47H64M16HR-25E IT
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
MT47H128M8SH-25E IT:M
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MT47H64M16HR-25E IT:H Tỷ lệ tối đa & tính chất điện
| Kiểu bộ nhớ | DDR2 SDRAM (volatile) |
| Kích thước bộ nhớ | 1 Gbit (64M x 16) |
| Tổ chức | 8 Meg x 16 x 8 banks |
| Clock Frequency | 400 MHz |
| Access Time | 400 ps |
| Data Rate (effective) | 800 MT/s |
| Giao diện | Parallel (byte-wide) |
| Prefetch Architecture | 4n-bit |
| Supply Voltage VDD | 1.8 V ±0.1 V |
| Supply Voltage VDDQ | 1.8 V ±0.1 V (SSTL_18) |
| I/O Standard | JEDEC SSTL_18-compatible |
| Data Strobe | Differential (DQS, DQS#) |
| Hộp | 84-TFBGA (8 mm x 12.5 mm) |
| Nhiệt độ hoạt động | -40C to +85C (Industrial, IT:H) |
| Trạng thái RoHS | Compliant (lead-free) |
Hướng dẫn cấu hình chân MT47H64M16HR-25E IT:H 84-tfbga (8 mm x 12.5 mm)
Cấu hình chân cho MT47H64M16HR-25E IT:H (84-tfbga (8 mm x 12.5 mm) gói). IC số này bao gồm chân GPIO, giao diện truyền thông (UART, SPI, I2C) và chân nguồn. Tham khảo tài liệu thông số kỹ thuật của nhà sản xuất để biết các chức năng chân thay thế và tùy chọn cấu hình. Cực kỳ quan trọng cho thiết kế hệ thống tích hợp và lập trình PCB.
Không có dữ liệu chân cụ thể sẵn có cho MT47H64M16HR-25E IT:H.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
MT47H64M16HR-25E IT:H phù hợp cho 6 Áp dụngs: Networking Line Card Memory, Industrial Controller and HMI, Automotive Infotainment Buffer, Printer Imaging Buffer, Embedded Computing and SBCs, Test and Measurement Instrumentation.
Networking Line Card Memory
The MT47H64M16HR-25E IT:H is well suited for Gigabit Ethernet line cards and access switches where 1 Gbit of DDR2 buffer memory is required for packet queuing and table storage. With 400 MHz clock and 800 MT/s effective data rate, the part provides 6.4 GB/s peak bandwidth across 16 DQ lanes, sufficient for line-rate buffering at 1 Gbps with headroom for QoS queues. Industrial temperature (-40C to +85C) ensures reliability in outdoor-cabinet and thermally loaded chassis. Differential DQS/DQS# strobe pairs maintain signal integrity across the 8 mm x 12.5 mm BGA footprint even with the dense board layouts typical of networking line cards. Designers should follow JEDEC SSTL_18 termination and use matched-length routing for DQ/DQS groups to preserve timing margins.
Được đề xuất
Industrial Controller and HMI
For industrial controllers, PLCs, and HMI panels operating in factory environments, the MT47H64M16HR-25E IT:H provides 64M x 16 of working memory with industrial-grade -40C to +85C operation. DDR2 SDRAM supports long product lifecycles typical of industrial automation (10-15 years), and Micron's MT47H family is broadly available through industrial distribution channels. The 84-TFBGA package is footprint-compatible with the broader MT47H family, enabling PCB reuse across controller variants (256 Mbit, 512 Mbit, 1 Gbit) without layout changes. Differential DQS and SSTL_18 I/O deliver robust signaling even in noisy industrial EMI environments. Designers should implement proper VDD/VDDQ bulk decoupling and follow JEDEC SSTL_18 termination networks.
Được đề xuất
Automotive Infotainment Buffer
The MT47H64M16HR-25E IT:H is commonly used in automotive infotainment head units as frame buffer memory for display controllers, navigation map data, and audio/video decoding pipelines. The IT:H industrial temperature grade handles cabin-temperature swings, while the AIT:H variant extends to +105C for under-dash deployments. With 1 Gbit capacity and 64M x 16 organization, the device holds multiple video frames for rear-view cameras, navigation tiles, or display compositor layers. The 84-ball TFBGA package (8 mm x 12.5 mm) fits beneath BGA-compat automotive SoCs and supports reflow profiles typical of automotive PCB assembly. Designers should validate timing margins against worst-case automotive temperature corners.
Được đề xuất
Printer Imaging Buffer
Office and production printers use the MT47H64M16HR-25E IT:H as scan-line or page-buffer memory between the print engine and image processor. A 1 Gbit buffer at 800 MT/s supports full-letter page rasterization at 600 DPI without compression, enabling duplex and high-page-rate modes. The 84-TFBGA footprint integrates cleanly beneath image-processor SoCs in compact printer mainboards. The differential DQS/DQS# strobe and SSTL_18 I/O standard provide stable signaling over the long matched-length traces typical of printer mainboards, which often span multiple PCB sections. The IT:H industrial temperature grade supports the warm enclosure conditions inside printer chassis during extended print runs.
Được đề xuất
Embedded Computing and SBCs
Single-board computers (SBCs), COM (Computer-on-Module) carrier boards, and legacy embedded computing platforms with DDR2 memory controllers use the MT47H64M16HR-25E IT:H as the primary working memory. A 64M x 16 configuration provides ample RAM for embedded Linux, RTOS, and OS image storage on platforms where DDR3 migration has not yet occurred. The industrial temperature grade supports fanless enclosures and outdoor kiosks. The 84-TFBGA package is footprint-compatible across the MT47H density family, allowing OEM upgrade paths from 256 Mbit to 1 Gbit with a single PCB layout. Designers must comply with JEDEC SSTL_18 termination and ensure controller-DRAM timing compatibility.
Được đề xuất
Test and Measurement Instrumentation
Test and measurement equipment - oscilloscopes, logic analyzers, protocol analyzers, and signal generators - frequently use the MT47H64M16HR-25E IT:H as waveform-capture or pattern-generator memory. At 800 MT/s, the part captures or plays back high-speed serial protocol patterns with adequate margin. The industrial temperature grade supports benchtop and laboratory environments with stable thermal performance. The 84-ball TFBGA package is small enough to fit on instrument mainboards next to high-speed ADC/DAC and FPGA front-end devices, while the differential DQS/DQS# strobe pair ensures capture integrity for deep acquisition memory. Designers should isolate the DRAM supply from switching power supplies to minimize noise coupling into the analog front end.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho MT47H64M16HR-25E IT:H — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | MT47H64M16HR-25E AIT:H | MT47H64M16HR-25E:H | MT47H64M16HR-25:H | MT47H64M16NF-25E IT:H | MT47H64M16HR-25E IT | MT47H128M8SH-25E IT:M |
|---|---|---|---|---|---|---|---|
| Brand | Micron Technology | Micron Technology | Micron Technology | Micron Technology | Micron Technology | Micron Technology | Micron Technology |
| Package | 84-TFBGA (8x12.5 mm) | 84-TFBGA - same | 84-TFBGA - same | 84-TFBGA - same | 84-TFBGA - same | 84-TFBGA - same | 84-TFBGA - same |
| Memory Type | DDR2 SDRAM | DDR2 SDRAM | DDR2 SDRAM | DDR2 SDRAM | DDR2 SDRAM | DDR2 SDRAM | DDR2 SDRAM |
| Density | 1 Gbit (64M x 16) | 1 Gbit (64M x 16) | 1 Gbit (64M x 16) | 1 Gbit (64M x 16) | 1 Gbit (64M x 16) | 1 Gbit (64M x 16) | 1 Gbit (128M x 8) |
| Clock Frequency | 400 MHz | 400 MHz | 400 MHz | 400 MHz | 400 MHz | 400 MHz | 400 MHz |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +105C (Extended/Auto) | 0C to +70C (Commercial) | 0C to +70C (Commercial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
| Supply Voltage (VDD/VDDQ) | 1.8 V ±0.1 V | 1.8 V ±0.1 V | 1.8 V ±0.1 V | 1.8 V ±0.1 V | 1.8 V ±0.1 V | 1.8 V ±0.1 V | 1.8 V ±0.1 V |
| Organization | x16 | x16 | x16 | x16 | x16 | x16 | x8 |
| I/O Standard | SSTL_18 | SSTL_18 | SSTL_18 | SSTL_18 | SSTL_18 | SSTL_18 | SSTL_18 |
Bảo phân biệt quan trọng
- Industrial temperature grade with same family pinout (vsMT47H64M16HR-25E:H)
- Wider temp range upgrade path in same footprint (vsMT47H64M16HR-25E AIT:H)
- Lower-power 1.8V DDR2 operation vs DDR3 alternatives (vsGeneric DDR3 1 Gbit SDRAM)
Ghi chú thiết kế
Follow JEDEC SSTL_18 termination for the MT47H64M16HR-25E IT:H. Use a VTT termination voltage of 0.9 V (VDDQ/2) with parallel resistor termination at the receiver end. Route the DQS/DQS# differential pair with matched lengths within +/- 25 mil, and route DQ byte groups with matched lengths to within +/- 50 mil. Place VDD and VDDQ bulk capacitors (typically 10uF + 100nF per ball cluster) as close as possible to the BGA balls. Maintain solid reference planes on adjacent layers to control impedance (target 50 ohm single-ended, 100 ohm differential for DQS).
Although DDR2 SDRAM does not dissipate significant power, refresh current at high temperature can be non-trivial. At +85C the MT47H64M16HR-25E IT:H refresh current increases roughly 2x compared to room temperature. Ensure the device's junction temperature stays within the datasheet's -40C to +85C operating range; for chassis with restricted airflow, derate ambient by 10-15C and validate using a thermal probe or IR camera on the BGA top side during worst-case workload (continuous read/write cycling).
Use series damping resistors (typically 22-33 ohm) on the address/command bus and on clock signals near the controller to reduce reflections. For the MT47H64M16HR-25E IT:H's 84-ball TFBGA package, breakout routing on the top layer should escape vertically with vias-in-pad allowed for inner balls. Enable on-die termination (ODT) via the DDR2 controller's mode register; ODT reduces bus reflections and improves signal integrity at 400 MHz operation. Run SI simulation with IBIS models provided by Micron before committing to PCB fabrication.
Common pitfalls with the MT47H64M16HR-25E IT:H include: (1) failing to program the controller's DDR2 timing registers to match the speed bin (-25E = 400 MHz / CL=5 typical); (2) omitting ZQ calibration at power-up, which leaves output drivers mis-calibrated; (3) using incorrect SSTL_18 VTT supply tolerance - it must track VDDQ within 2%; (4) assuming the H and IT:H parts are interchangeable without firmware checks for the industrial temp range. Always perform read/write margin testing at temperature corners.
Thông tin tuân thủ
RoHS-compliant per Micron product page; lead-free (Pb-free) assembly. Industrial temperature grade -40C to +85C. AEC-Q100 not applicable for the IT:H variant; for automotive AEC-Q qualified parts, choose the AIT:H suffix or higher-grade members of the MT47H family.
