K4S641632H-UC75 - 64Mb H-die SDRAM 1M x 16 x 4 Banks | Samsung
MPN: K4S641632H-UC75 ✗ Cuối đờiK4S641632H-UC75 Tóm tắt
What is SDRAM? Synchronous DRAM is a dynamic random-access memory that synchronizes data transfers with the rising edge of a system clock, enabling higher throughput than asynchronous DRAM. Within the memory hierarchy, SDRAM sits above SRAM and below cache as the main system memory for embedded systems, networking equipment, and consumer electronics. SDRAM evolved into subsequent generations including DDR, DDR2, DDR3, DDR4, and DDR5 SDRAM; the K4S641632H is a first-generation SDR (Single Data Rate) SDRAM. It uses a four-bank architecture to improve throughput by allowing one bank to precharge while another is being accessed.
Key features of the K4S641632H-UC75 include a maximum operating current of 135 mA, commercial operating temperature range of 0C to +70C, full-page burst capability, and sequential/interleave burst modes. The 1M x 16 organization is well-suited for 16-bit data buses in legacy embedded designs, while the four-bank architecture supports concurrent activation of up to four rows for higher bandwidth. LVCMOS interface simplifies connection to standard logic-level controllers without level shifters.
In terms of architecture, the K4S641632H-UC75 uses a pipelined multi-bank internal structure that supports auto-refresh and self-refresh modes for data retention. The address bus is multiplexed into row and column addresses via RAS#, CAS#, and WE# control lines, reducing pin count and enabling high-density integration in the 54-pin TSOP-II form factor.
Typical applications include networking routers, set-top boxes, industrial control equipment, embedded computing platforms, legacy computer main memory, and graphics frame buffers. The 16-bit-wide data bus is a natural fit for embedded processors and DSPs that expect half-word memory accesses.
When designing with this device, ensure proper decoupling with 0.1 uF and 0.01 uF capacitors placed close to VDD/VSS pins, follow the standard SDRAM initialization sequence (PRECHARGE -> NOP -> MRS), and respect tRCD/tRP/tRFC timing parameters per the datasheet.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
Bộ thay thế dễ dàng lắp đặt cho K4S641632H-UC75 — 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 K4S641632H-UC75 (cùng hình factor và footprint) — khác nhau ở Address Multiplexing, Burst Length, Density, Interface, Memory Type.
K4S641632H-UI75
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
K4S641632H-UC750
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
K4S641632N-UC75
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
IS42S16160C-7TL
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
AS4C1M16S-7TCN
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MT48LC1M16A1P-7E
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
K4S641632H-UC75 Tỷ lệ tối đa & tính chất điện
| Density | 64 Mb (67,108,864 bits) |
| Tổ chức | 1M x 16 bits x 4 Banks |
| Kiểu bộ nhớ | SDRAM (Synchronous DRAM) |
| Clock Frequency | 133 MHz |
| Supply Voltage (VDD/VDDQ) | 3.3 V |
| Giao diện | LVCMOS |
| Max Operating Current | 135 mA |
| Nhiệt độ hoạt động | 0C to +70C (Commercial) |
| Package Type | 54-pin TSOP-II |
| Lead Finish | Pb-Free (RoHS compliant) |
| Bank Architecture | 4 Banks |
| Burst Length | 1, 2, 4, 8, Full Page |
| Burst Type | Sequential or Interleave |
| Address Multiplexing | Yes (RAS#, CAS# controlled) |
| Refresh | Auto-Refresh and Self-Refresh |
| Process Technology | Samsung high-performance CMOS |
| Data Width | 16 bits |
Cấu hình chân K4S641632H-UC75
| Chân 1 | VDD — Power supply (3.3V) |
| Chân 2 | DQ0 — Data I/O line 0 |
| Chân 3 | VDDQ — DQ power supply |
| Chân 4 | DQ1 — Data I/O line 1 |
| Chân 5 | DQ2 — Data I/O line 2 |
| Chân 6 | VSSQ — DQ ground |
| Chân 7 | DQ3 — Data I/O line 3 |
| Chân 8 | DQ4 — Data I/O line 4 |
| Chân 9 | VDDQ — DQ power supply |
| Chân 10 | DQ5 — Data I/O line 5 |
| Chân 11 | DQ6 — Data I/O line 6 |
| Chân 12 | VSSQ — DQ ground |
| Chân 13 | DQ7 — Data I/O line 7 |
| Chân 14 | NC — Not connected |
| Chân 15 | VDD — Power supply (3.3V) |
| Chân 16 | LDQM — Lower DQ mask enable |
| Chân 17 | WE# — Write enable (active low) |
| Chân 18 | CAS# — Column address strobe (active low) |
| Chân 19 | RAS# — Row address strobe (active low) |
| Chân 20 | CS# — Chip select (active low) |
| Chân 21 | BA0 — Bank address 0 |
| Chân 22 | BA1 — Bank address 1 |
| Chân 23 | A11 — Address bit 11 |
| Chân 24 | A10 — Address bit 10 / auto-precharge |
| Chân 25 | A0 — Address bit 0 |
| Chân 26 | A1 — Address bit 1 |
| Chân 27 | A2 — Address bit 2 |
| Chân 28 | A3 — Address bit 3 |
| Chân 29 | VDD — Power supply (3.3V) |
| Chân 30 | VSS — Ground |
| Chân 31 | A4 — Address bit 4 |
| Chân 32 | A5 — Address bit 5 |
| Chân 33 | A6 — Address bit 6 |
| Chân 34 | A7 — Address bit 7 |
| Chân 35 | A8 — Address bit 8 |
| Chân 36 | A9 — Address bit 9 |
| Chân 37 | CKE — Clock enable |
| Chân 38 | CLK — System clock input |
| Chân 39 | UDQM — Upper DQ mask enable |
| Chân 40 | NC — Not connected |
| Chân 41 | VSS — Ground |
| Chân 42 | DQ15 — Data I/O line 15 |
| Chân 43 | VSSQ — DQ ground |
| Chân 44 | DQ14 — Data I/O line 14 |
| Chân 45 | DQ13 — Data I/O line 13 |
| Chân 46 | VDDQ — DQ power supply |
| Chân 47 | DQ12 — Data I/O line 12 |
| Chân 48 | DQ11 — Data I/O line 11 |
| Chân 49 | VSSQ — DQ ground |
| Chân 50 | DQ10 — Data I/O line 10 |
| Chân 51 | DQ9 — Data I/O line 9 |
| Chân 52 | VDDQ — DQ power supply |
| Chân 53 | DQ8 — Data I/O line 8 |
| Chân 54 | VSS — Ground |
Ứng dụng tiêu biểu
K4S641632H-UC75 phù hợp cho 6 Áp dụngs: Legacy Networking Router Main Memory, Set-Top Box Memory Subsystem, Industrial Control and HMI Equipment, Embedded Computing and Single-Board Computers, Legacy Printer and Imaging Controller Memory, Test and Measurement Instrumentation.
Legacy Networking Router Main Memory
The K4S641632H-UC75 fits legacy networking router designs as main working memory for packet buffering and routing tables. Its 1M x 16 organization provides 16-bit-wide access compatible with embedded network processors such as the Motorola MPC860 and Intel IXP family, while the 133 MHz clock rate keeps up with OC-3 to Fast Ethernet throughput. The four-bank architecture supports concurrent bank activation to improve memory throughput during burst packet processing. Its 135 mA maximum operating current is manageable for typical router power budgets, and the 54-pin TSOP-II footprint matches legacy PCB layouts from the late 1990s and early 2000s.
Được đề xuất
Set-Top Box Memory Subsystem
In set-top box (STB) designs, the K4S641632H-UC75 provides 64 Mb of working memory for MPEG-2 transport stream demux buffers, on-screen display frame buffers, and application code execution. Its 133 MHz clock rate and 16-bit data width pair well with STB MPEG decoders such as the STi5512 or Broadcom BCM7110, which expect 16-bit PC133 SDRAM. The four-bank architecture allows simultaneous demux and OSD rendering without bank conflicts. The 54-pin TSOP-II package simplifies PCB layout in space-constrained STB enclosures, and the commercial 0C to +70C temperature range matches indoor operating environments.
Được đề xuất
Industrial Control and HMI Equipment
Industrial control equipment and human-machine interface (HMI) panels use the K4S641632H-UC75 as main memory for embedded controllers running real-time operating systems such as VxWorks or embedded Linux. Its 64 Mb capacity supports Linux kernel + rootfs in single-chip configurations, while the 16-bit data width is compatible with ARM7/ARM9 SoCs such as the Samsung S3C2440 and Atmel AT91SAM9260 that boot from external SDRAM. The four-bank architecture improves real-time responsiveness by allowing concurrent memory accesses for display refresh and control loop execution. The commercial temperature grade suits factory-floor indoor installations.
Được đề xuất
Embedded Computing and Single-Board Computers
Embedded single-board computers (SBCs) and PC/104 platforms use the K4S641632H-UC75 as 64 MB of main memory for x86 or PowerPC CPU modules that require PC133 SDRAM. The 16-bit-wide configuration can be combined with a second K4S641632H-UC75 to form a 32-bit-wide memory bank with byte-lane parity, matching the data bus of x86 embedded CPUs such as the AMD Geode LX800 and Intel Atom E6xx. The 133 MHz clock rate and standard JEDEC PC133 SDRAM interface ensure compatibility with a wide range of legacy CPU chipsets without timing adjustments.
Được đề xuất
Legacy Printer and Imaging Controller Memory
Laser printers, multifunction devices, and image processing controllers use the K4S641632H-UC75 as page buffer memory between the print engine controller ASIC and the formatter board. Its 64 Mb capacity holds a full A4 page at 600 DPI grayscale without compression, and the 133 MHz bandwidth supports real-time raster image processing at print engine speeds up to 30 ppm. The 16-bit data width pairs with printer controller ASICs such as the TI TMS320C31x DSP family and the Sharp LH7 series. The four-bank architecture allows the print engine DMA and the formatter to access memory without excessive bus contention.
Được đề xuất
Test and Measurement Instrumentation
Bench-top oscilloscopes, logic analyzers, and signal generators use the K4S641632H-UC75 as waveform capture buffer memory. The 64 Mb capacity allows long acquisition windows at high sample rates, while the 133 MHz clock rate supports real-time sampling rates up to 100 MSPS with adequate memory depth. The four-bank architecture allows simultaneous waveform capture and display refresh without bus conflicts. The commercial 0C to +70C temperature range suits laboratory environments, and the 54-pin TSOP-II package simplifies PCB layout in compact instrument enclosures where vertical board-to-board stacking is required.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho K4S641632H-UC75 — 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 | K4S641632H-UI75 | K4S641632H-UC750 | K4S641632N-UC75 | IS42S16160C-7TL | AS4C1M16S-7TCN | MT48LC1M16A1P-7E |
|---|---|---|---|---|---|---|---|
| Brand | Samsung Electronics | Samsung Electronics | Samsung Electronics | Samsung Electronics | ISSI | Alliance Memory | Micron Technology |
| Package | 54-pin TSOP-II | 54-pin TSOP-II - same | 54-pin TSOP-II - same | 54-pin TSOP-II - same | 54-pin TSOP-II - same | 54-pin TSOP-II - same | 54-pin TSOP-II - same |
| Density | 64 Mb | 64 Mb | 64 Mb | 64 Mb | 64 Mb | 64 Mb | 64 Mb |
| Organization | 1M x 16 x 4 Banks | 1M x 16 x 4 Banks | 1M x 16 x 4 Banks | 1M x 16 x 4 Banks | 1M x 16 x 4 Banks | 1M x 16 x 4 Banks | 1M x 16 x 4 Banks |
| Clock Frequency | 133 MHz | 133 MHz | 133 MHz | 133 MHz | 143 MHz (+8%) | 143 MHz (+8%) | 133 MHz |
| Supply Voltage | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V |
| Operating Temperature | 0C to +70C (Commercial) | -40C to +85C (Industrial) | 0C to +70C (Commercial) | 0C to +70C (Commercial) | 0C to +70C (Commercial) | 0C to +70C (Commercial) | 0C to +70C (Commercial) |
| RoHS Compliance | Yes (Pb-Free) | Yes (Pb-Free) | Yes (Pb-Free) | Yes (Pb-Free) | Yes | Yes | Yes |
Bảo phân biệt quan trọng
- Standardized JEDEC PC133 SDRAM interface (vsIS42S16160C-7TL (ISSI))
- Wide legacy design support (vsAS4C1M16S-7TCN (Alliance Memory))
- Commercial temperature grade as standard (vsK4S641632H-UI75 (Samsung industrial))
Ghi chú thiết kế
Place 0.1 uF and 0.01 uF decoupling capacitors as close as possible to each VDD/VDDQ pin and corresponding VSS/VSSQ pins. The K4S641632H-UC75 draws up to 135 mA during active read/write cycles at 133 MHz; bulk capacitance of at least 10 uF near the device helps maintain VDD within +/-5% tolerance during bank activation peaks. Use a low-impedance ground plane with VSS/VSSQ tied together at a single star point.
Route clock (CLK) and clock enable (CKE) traces as short as possible with matched impedance to the controller. Keep DQ lines matched in length within +/- 0.5 inches (12.5 mm) to avoid data skew at 133 MHz. Address lines A0-A11 should be routed together with minimal stubs. The 54-pin TSOP-II has a 0.8 mm pin pitch; use 0.4 mm-wide traces with 0.2 mm clearance to maintain signal integrity.
Do not skip the SDRAM initialization sequence: PRECHARGE ALL -> 8x AUTO REFRESH -> MRS to set CAS latency and burst length. Skipping initialization or insufficient 200 us power-on delay after stable VDD/CKE will cause undefined behavior on first access. For burst lengths greater than 1, configure LDQM and UDQM appropriately to terminate bursts early. Always issue a PRECHARGE before changing active row in a bank.
Thông tin tuân thủ
RoHS compliant (Pb-Free lead finish) per Samsung datasheet description. REACH, halogen-free, and conflict minerals declarations are not in the verified web data; consult Samsung product environmental compliance documentation directly for authoritative statements.
