JS28F320J3F75A - 32Mbit Parallel NOR Flash, 75ns, 56-TSOP | Micron
MPN: JS28F320J3F75A ✗ Cuối đờiJS28F320J3F75A Tóm tắt
A parallel NOR flash is a non-volatile memory type that supports random read access (execute-in-place / XIP), byte-level program, and sector erase operations. Within the memory hierarchy, NOR flash sits between SRAM (volatile, fastest) and NAND flash (non-volatile, higher density, sequential access). NOR is preferred when a microprocessor needs to fetch code directly from the array without first copying to RAM, and when reliable long-term data retention with low software complexity is required.
Key features include symmetric 128-Kbyte uniform blocks (parameter blocks) or 64-Kword blocks, top or bottom boot block configurations, hardware write protection, a deep power-down mode for low standby current, and command-set compatibility with the Common Flash Interface (CFI). The device supports 100,000 program/erase cycles per block and a minimum 20-year data retention. Its 75 ns access time makes it suitable for microprocessors and ASICs operating at bus frequencies up to approximately 50 MHz without wait states, or higher with proper handshaking.
Typical applications include set-top boxes, networking equipment, industrial controllers, automotive infotainment, printers, and any embedded design requiring execute-in-place boot storage. The 56-TSOP footprint is widely supported on legacy and new PCBs, simplifying hardware integration.
When designing with this device, ensure the host microcontroller supplies a clean 3.3 V rail within the 2.7 V-3.6 V tolerance, and respect the program/erase timing budget. Adding a 0.1 uF decoupling capacitor close to VCC and VCCQ pins is recommended for reliable operation across temperature.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone. All values are referenced to current Micron datasheet and live distributor inventory as of 2026-10-05.
Bộ thay thế dễ dàng lắp đặt cho JS28F320J3F75A — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
JS28F320J3F75B
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
JS28F320J3F70A
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
JS28F320J3D75A
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
JS28F640J3F75A
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
JS28F320J3F75A
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →JS28F128J3F75A
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
JS28F320J3F75A Tỷ lệ tối đa & tính chất điện
| Kiểu bộ nhớ | Non-Volatile NOR Flash |
| Kích thước bộ nhớ | 32 Mbit (4 MB) |
| Tổ chức | 4M x 8 / 2M x 16 (configurable) |
| Technology | NOR, Single Bit per Cell (SBC), 65 nm |
| Access Time (Initial) | 75 ns |
| Loại giao diện | Parallel (Async) |
| Supply Voltage (VCC) | 2.7 V to 3.6 V (typ. 3.0 V / 3.3 V) |
| Program/Erase Cycles | 100,000 per block (typ.) |
| Data Retention | 20 years (min) |
| Block Size | 128 Kbyte / 64 Kword uniform blocks |
| Boot Block Configuration | Top or Bottom (variant dependent) |
| Hộp | 56-pin TSOP Type I (Tape & Reel) |
| Nhiệt độ hoạt động | -40 C to +85 C (Industrial) |
| Kiểu lắp đặt | Surface Mount |
| Trạng thái RoHS | Compliant |
Cấu hình chân JS28F320J3F75A
| Chân 1 | A21 — Address input 21 |
| Chân 2 | A20 — Address input 20 |
| Chân 3 | A19 — Address input 19 |
| Chân 4 | A18 — Address input 18 |
| Chân 5 | A17 — Address input 17 |
| Chân 6 | A7 — Address input 7 |
| Chân 7 | A6 — Address input 6 |
| Chân 8 | A5 — Address input 5 |
| Chân 9 | A4 — Address input 4 |
| Chân 10 | A3 — Address input 3 |
| Chân 11 | A2 — Address input 2 |
| Chân 12 | A1 — Address input 1 |
| Chân 13 | A0 — Address input 0 |
| Chân 14 | CE# — Chip Enable (active low) |
| Chân 15 | DQ0 — Data I/O 0 (x16: DQ0) |
| Chân 16 | DQ8 — Data I/O 8 (x16: DQ8 / x8: NC) |
| Chân 17 | DQ1 — Data I/O 1 |
| Chân 18 | DQ9 — Data I/O 9 (x16) / NC (x8) |
| Chân 19 | DQ2 — Data I/O 2 |
| Chân 20 | DQ10 — Data I/O 10 (x16) / NC (x8) |
| Chân 21 | DQ3 — Data I/O 3 |
| Chân 22 | DQ11 — Data I/O 11 (x16) / NC (x8) |
| Chân 23 | VCC — Power supply (2.7 V - 3.6 V) |
| Chân 24 | DQ4 — Data I/O 4 |
| Chân 25 | DQ12 — Data I/O 12 (x16) / NC (x8) |
| Chân 26 | DQ5 — Data I/O 5 |
| Chân 27 | DQ13 — Data I/O 13 (x16) / NC (x8) |
| Chân 28 | DQ6 — Data I/O 6 |
| Chân 29 | DQ14 — Data I/O 14 (x16) / NC (x8) |
| Chân 30 | DQ7 — Data I/O 7 |
| Chân 31 | DQ15 — Data I/O 15 (x16) / DQ7 in x8 |
| Chân 32 | VSS — Ground |
| Chân 33 | BYTE# — x8 (low) / x16 (high) mode select |
| Chân 34 | A16 — Address input 16 |
| Chân 35 | A15 — Address input 15 |
| Chân 36 | A14 — Address input 14 |
| Chân 37 | A13 — Address input 13 |
| Chân 38 | A12 — Address input 12 |
| Chân 39 | A11 — Address input 11 |
| Chân 40 | A10 — Address input 10 |
| Chân 41 | A9 — Address input 9 |
| Chân 42 | A8 — Address input 8 |
| Chân 43 | OE# — Output Enable (active low) |
| Chân 44 | RP# — Reset / Deep Power-Down (active low) |
| Chân 45 | WE# — Write Enable (active low) |
| Chân 46 | VCCQ — Output buffer supply (tie to VCC) |
| Chân 47 | WP# — Write Protect (active low) |
| Chân 48 | STS — Status output (RY/BY# equivalent) |
| Chân 49 | NC — Not connected (per datasheet) |
| Chân 50 | NC — Not connected (per datasheet) |
| Chân 51 | NC — Not connected (per datasheet) |
| Chân 52 | NC — Not connected (per datasheet) |
| Chân 53 | NC — Not connected (per datasheet) |
| Chân 54 | NC — Not connected (per datasheet) |
| Chân 55 | NC — Not connected (per datasheet) |
| Chân 56 | VSS — Ground |
Ứng dụng tiêu biểu
JS28F320J3F75A phù hợp cho 7 Áp dụngs: Embedded Boot / Firmware Storage, Set-Top Box Firmware Storage, Industrial PLC / Controller Data Logging, Networking Router / Switch Firmware, Printer Controller Firmware, Automotive Infotainment / Cluster Storage, Medical Device Firmware / Parameter Storage.
Embedded Boot / Firmware Storage
The JS28F320J3F75A's 75 ns parallel access and 32 Mbit capacity suit it for boot ROM replacement in embedded systems where the host microcontroller (MCU/MPU) fetches code directly from flash via execute-in-place (XIP). Its 56-TSOP footprint fits standard 32-bit microcontroller buses, and the CFI command set allows generic flash drivers to identify block geometry without vendor-specific code. With 100,000 program/erase cycles per block, this NOR flash supports robust in-field firmware updates over the product lifetime.
Được đề xuất
Set-Top Box Firmware Storage
Set-top boxes and digital TV receivers traditionally use parallel NOR flash to store the bootloader, real-time operating system kernel, and configuration data because of fast XIP access and proven reliability. The JS28F320J3F75A's 32 Mbit capacity holds typical STB firmware images plus channel maps and DRM certificates. The 2.7 V to 3.6 V VCC range aligns with STB 3.3 V power rails, and the 56-TSOP package is well established in legacy and current STB designs.
Được đề xuất
Industrial PLC / Controller Data Logging
Industrial PLCs, HMIs, and motor controllers use parallel NOR flash like the JS28F320J3F75A for parameter storage, fault logs, and recipe data that must survive power cycling. The 128 Kbyte uniform block size is efficient for storing fixed-size log records, and 100,000 P/E cycles per block supports years of continuous write activity. Industrial temperature rating (-40 C to +85 C) and high data retention (20 years) make it suitable for factory-floor environments.
Được đề xuất
Networking Router / Switch Firmware
Routers, switches, and wireless access points use parallel NOR flash for primary boot and recovery images because the deterministic access time is critical for fast power-on-to-forwarding-time. The JS28F320J3F75A's 75 ns access supports zero-wait-state reads at typical networking bus frequencies, and 32 Mbit fits a full routing-stack firmware with management agents. The top/bottom boot block options protect the bootloader region from accidental erase during field upgrades.
Được đề xuất
Printer Controller Firmware
Laser printers, multifunction devices, and industrial label printers store their main firmware, font tables, and user macros in parallel NOR flash because of fast random read access during page rendering. The JS28F320J3F75A's 4 MB capacity accommodates embedded fonts and PostScript interpreters, while 100,000 P/E cycles support firmware updates over the printer's lifetime. The 56-TSOP package integrates easily onto printer controller boards alongside DRAM and the print engine ASIC.
Được đề xuất
Automotive Infotainment / Cluster Storage
Head units, instrument clusters, and telematics modules historically used parallel NOR flash such as the JS28F320J3F75A to hold boot loaders, audio codecs, and navigation data. The 75 ns access time supports fast boot of critical displays, and the 32 Mbit capacity fits typical cluster software plus graphic assets. Although the standard part is industrial-grade (not AEC-Q100), it is widely used in cabin electronics where -40 C to +85 C is sufficient. For under-hood or powertrain applications, use AEC-Q100 qualified alternatives.
Được đề xuất
Medical Device Firmware / Parameter Storage
Patient monitors, infusion pumps, and diagnostic equipment require deterministic, reliable non-volatile storage for boot code, calibration tables, and audit logs. The JS28F320J3F75A's symmetric block architecture and long data retention (20 years) suit regulated medical designs where traceability of parameter storage is required. Parallel NOR allows XIP boot from the flash, minimizing RAM requirements and BOM cost in portable medical devices.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho JS28F320J3F75A — 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 | JS28F320J3F75B | JS28F320J3F70A | JS28F320J3D75A | JS28F640J3F75A | JS28F320J3F75A (Alliance) | JS28F128J3F75A |
|---|---|---|---|---|---|---|---|
| Brand | Micron Technology | Micron Technology | Micron Technology | Micron Technology | Micron Technology | Alliance Memory | Micron Technology |
| Package | 56-TSOP | 56-TSOP | 56-TSOP | 56-TSOP | 56-TSOP | 56-TSOP | 56-TSOP |
| Memory Size | 32 Mbit | 32 Mbit | 32 Mbit | 32 Mbit | 64 Mbit | 32 Mbit | 128 Mbit |
| Access Time | 75 ns | 75 ns | 70 ns | 75 ns | 75 ns | 75 ns | 75 ns |
| Supply Voltage | 2.7 V to 3.6 V | 2.7 V to 3.6 V | 2.7 V to 3.6 V | 2.7 V to 3.6 V | 2.7 V to 3.6 V | 2.7 V to 3.6 V | 2.7 V to 3.6 V |
| Process Technology | 65 nm SBC | 65 nm SBC | 65 nm SBC | 130 nm SBC | 65 nm SBC | 65 nm SBC | 65 nm SBC |
| Boot Block Configuration | Top or Bottom | Top or Bottom | Top or Bottom | Top or Bottom | Top or Bottom | Top or Bottom | Top or Bottom |
| P/E Cycles | 100,000 | 100,000 | 100,000 | 100,000 | 100,000 | 100,000 | 100,000 |
| Data Retention | 20 years | 20 years | 20 years | 20 years | 20 years | 20 years | 20 years |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
Bảo phân biệt quan trọng
- Wide distributor availability via Alliance Memory second source (vsJS28F320J3F75A (Micron original))
- 65 nm SBC process with low active current (vsJS28F320J3D75A (130 nm D revision))
- Cost-efficient 32 Mbit density in standard 56-TSOP (vsJS28F640J3F75A (64 Mbit))
Ghi chú thiết kế
JS28F320J3F75A requires a clean 3.3 V supply within 2.7 V - 3.6 V. Place a 0.1 uF ceramic decoupling capacitor close to each VCC and VCCQ pin, plus a bulk 4.7 uF tantalum or ceramic near the package. Hold RP# high during power-up ramp and for at least tPHQV (typically 150 us per Micron datasheet) before issuing the first read command. Failure to sequence RP# can leave the device in an undefined state.
Route the 56-TSOP address, data, and control traces with matched lengths to avoid bus skew. Keep CE#, OE#, and WE# traces short and route DQ0-DQ15 as a matched bus. The 56-TSOP Type I footprint has 0.5 mm pitch; use 0.2-0.3 mm trace width with clear reference to the GND plane. Place the flash as close as possible to the host MCU to minimize bus capacitance, and provide a solid VSS plane under the package for thermal dissipation and signal integrity.
Avoid toggling BYTE# while CE# is asserted - this can cause bus contention. After issuing a program or erase command, poll the Status Register (DQ7) or wait for STS to go low before accessing the array. Do not exceed the maximum program/erase cycles of 100,000 per block; implement wear-leveling in firmware for data logging use cases. When migrating designs to JS28F640J3F75A (64 Mbit), update your flash driver to use additional address bits and verify boot block configuration matches.
Parallel NOR flash buses are susceptible to reflections at high bus frequencies. For designs operating above 40 MHz, add 22-33 ohm series damping resistors near the MCU DQ outputs. Maintain VIL/VIH thresholds (VIL max 0.4 V, VIH min 2.4 V at 3.3 V) on all control signals. The CE# signal must use a clean edge - avoid RC delays that could violate tCE (chip enable access time). Use IBIS models from Micron for SI simulation.
Thông tin tuân thủ
Standard JS28F320J3F75A is industrial grade (-40C to +85C) and not AEC-Q100 qualified. RoHS and lead-free per Micron product page. For halogen-free status, contact Micron directly.
