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Microchip Technology SST39VF400A-70-4C-M1QE
- Part No.:
- SST39VF400A-70-4C-M1QE
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-WFBGA
- Datasheet:
-
SST39VF400A-70-4C-M1QE.pdf
- Description:
- IC FLASH 4MBIT PARALLEL 48WFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:4,536
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Product details
Overview
SST39VF400A-70-4C-M1QE from Microchip Technology is a 4 Mbit (256K × 16) CMOS Multi-Purpose Flash memory IC with x16 asynchronous interface, 70 ns read access time, 2.7–3.6 V single-supply operation, and JEDEC-standard pinout. It delivers sector/block erase, word-program capability, and SuperFlash reliability for embedded firmware storage in industrial controllers and communication modules.
For engineers reviewing the SST39VF400A-70-4C-M1QE datasheet, SST39VF400A-70-4C-M1QE pinout, SST39VF400A-70-4C-M1QE application, or SST39VF400A-70-4C-M1QE equivalent, key selection criteria include its 256K × 16 organization, 70 ns read timing, 2.7–3.6 V operating range, uniform 2 KWord sectors, and 48-pin TSOP package compatibility with legacy x16 memory interfaces.
Technical Context
This device implements SST's proprietary SuperFlash technology with split-gate cells and thick-oxide tunneling injectors, enabling fixed erase/program times independent of cycle count. It supports JEDEC-standard command sets-including Software Data Protection (SDP) with three-byte unlock sequences for programming and six-byte sequences for sector/block/chip erase-and provides both Toggle Bit (DQ6) and Data# Polling (DQ7) for end-of-write detection.
The SST39VF400A-70-4C-M1QE operates in standard asynchronous read mode (CE# and OE# low), word-program mode (CE# low, WE# low, OE# high), and multiple erase modes. Its CFI (Common Flash Interface) support enables automatic device identification and geometry reporting, and it features hardware write inhibit during power-up/down via VDD monitoring and noise/glitch protection on WE#/CE#.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 256K × 16 (4 Mbit total); directly maps to 16-bit data bus systems without byte-lane masking. |
| Read Access Time | 70 ns max; ensures compatibility with 14 MHz bus timing and meets legacy microcontroller memory interface requirements. |
| Supply Voltage Range | 2.7–3.6 V; supports wide-input industrial power rails and battery-backed operation without external regulators. |
| Erase Architecture | Uniform 2 KWord sectors (128 total) and 32 KWord blocks (8 total); enables granular firmware updates and partial image recovery. |
| Endurance & Retention | 100,000 program/erase cycles typical; >100 years data retention at 25°C; validated for long-life embedded deployments. |
| Power Consumption | 9 mA active current (14 MHz), 3 µA standby current; reduces thermal load and extends battery life in always-on systems. |
| Interface Standard | JEDEC-compliant x16 asynchronous interface; drop-in compatible with existing 48-pin TSOP-based flash designs. |
Pinout & Package
Package: 48-lead TSOP (12 mm × 20 mm), RoHS-compliant, lead-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A17 | Address Inputs | A0–A16 used for 256K × 16 addressing; A17 selects upper half of address space-valid for SST39VF400A per datasheet Figure 2. |
| DQ0–DQ15 | Data I/O | 16-bit bidirectional data bus; latched internally during writes; tri-stated when CE# or OE# is high. |
| CE# | Chip Enable | Active-low chip select; device enters standby (3 µA) when high; required low for all operations except standby. |
| OE# | Output Enable | Active-low output gate; controls data bus drive during reads; high disables outputs regardless of CE# state. |
| WE# | Write Enable | Active-low control for write cycles; initiates command latching on falling edge and data latching on rising edge. |
| VDD | Power Supply | 2.7–3.6 V supply; powers core logic and memory array; internal VPP generation eliminates need for external high-voltage source. |
| VSS | Ground | Two dedicated ground pins (pins 23 and 46) reduce noise coupling and improve signal integrity in high-speed reads. |
| NC | No Connect | Pins 9, 10, 12–15, 18, 20, 21, 22, 24, 25, 26, 27, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 47 - electrically isolated; must remain unconnected. |
Key Features
| Feature | Design Value |
|---|---|
| SuperFlash® Technology | Split-gate cell architecture with fixed 14 µs word-program and 18 ms sector/block-erase times-no degradation over lifetime. |
| Software Data Protection (SDP) | Three-byte unlock sequence required before programming; six-byte sequence for erase-prevents accidental writes during power transitions. |
| End-of-Write Detection | Dual-mode status reporting via DQ6 (Toggle Bit) and DQ7 (Data# Polling); enables deterministic host polling without fixed delays. |
| CFI Support | Standard Common Flash Interface query mode (entry via 5555H/98H) returns device geometry, timing, and command set-enables auto-configuration in bootloader code. |
| Hardware Write Inhibit | VDD power-up/down detection (<1.5 V lockout), <5 ns glitch rejection on WE#/CE#, and OE#-controlled output disable-ensures robustness in noisy environments. |
Applications
| Industrial PLC Firmware Storage | Telecom Baseband Configuration |
|---|---|
Use Scenario: Storing and updating ladder logic firmware and I/O mapping tables in programmable logic controllers deployed in factory automation. IC Role / Device Role / Timing Role: Nonvolatile program memory with 70 ns read access and sector-erase granularity-enables hot-swappable firmware patches without full reflash. Use Value: 100,000-cycle endurance and >100-year data retention ensure reliable operation across 15+ year equipment lifecycles in unattended installations. | Use Scenario: Holding DSP configuration profiles, calibration data, and protocol stacks in wireless baseband processors for LTE small cells. IC Role / Device Role / Timing Role: x16 asynchronous boot memory mapped to processor address space; supports fast read during cold boot and selective block-erase for field upgrades. Use Value: 2.7–3.6 V operation matches wide-input DC-DC outputs; 32 KWord block erase allows atomic update of radio parameter sets without service interruption. |
| Medical Diagnostic Instrument Boot Code | Automotive Infotainment System OS Image |
Use Scenario: Storing certified boot loader and safety-critical diagnostic routines in portable ultrasound and ECG devices requiring regulatory traceability. IC Role / Device Role / Timing Role: Secure, write-protected firmware repository; SDP and hardware inhibit prevent unauthorized modification during clinical use. Use Value: JEDEC pinout and 48-TSOP footprint enable drop-in replacement in FDA-cleared designs; CFI support simplifies bootloader validation and version reporting. | Use Scenario: Hosting primary OS kernel and UI assets in automotive head units where OTA updates require verified, atomic image replacement. IC Role / Device Role / Timing Role: High-reliability flash memory supporting dual-bank boot schemes; chip-erase (70 ms typical) enables full OS rollback after failed update. Use Value: 4 Mbit density balances cost and capacity for mid-tier infotainment; industrial temperature grade (-40°C to +85°C) ensures operation in vehicle cabin environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SST39VF400A-70-4I-M1QE | Same 4 Mbit x16 organization, 70 ns read, 2.7–3.6 V, but rated for -40°C to +85°C industrial temperature range vs. commercial (0°C to +70°C) for SST39VF400A-70-4C-M1QE. | Required for automotive, outdoor telecom, or industrial control applications outside commercial ambient limits. | Select when extended temperature operation is mandatory; otherwise, SST39VF400A-70-4C-M1QE suffices for office/indoor embedded systems. |
| MX29LV400CBTI-70G | 4 Mbit x16, 70 ns read, 2.7–3.6 V, but uses different command set (non-JEDEC-compatible), lacks CFI, and has slower 500 ms typical chip-erase time vs. 70 ms. | Suitable only where firmware update frequency is low and bootloader code can be adapted to Macronix-specific commands. | Choose only if existing design already uses MX29LV400C and migration effort is prohibitive; SST39VF400A-70-4C-M1QE offers superior erase speed and JEDEC interoperability. |
Compared with SST39VF400A-70-4I-M1QE, the SST39VF400A-70-4C-M1QE trades industrial temperature rating for lower cost in commercial environments; compared with MX29LV400CBTI-70G, it delivers 7× faster chip-erase, JEDEC compliance, and integrated CFI-reducing firmware development time and improving field upgrade reliability.
Availability
SST39VF400A-70-4C-M1QE is available at Aetrix Electronics and suitable for industrial PLC firmware storage, telecom baseband configuration, and medical diagnostic instrument boot code requiring stable component supply and long-term obsolescence management.
Supply support for SST39VF400A-70-4C-M1QE includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Microchip Technology is a global provider of microcontrollers, analog components, and memory solutions, acquired Silicon Storage Technology (SST) in 2010 to expand its nonvolatile memory portfolio.
The SST39VF400A-70-4C-M1QE belongs to the SST39VFxxxA family of Multi-Purpose Flash devices, designed specifically for cost-sensitive, high-reliability embedded applications requiring fast, low-voltage, JEDEC-standard firmware and configuration storage.
FAQ
What is the memory organization and bus width of the SST39VF400A-70-4C-M1QE?
The SST39VF400A-70-4C-M1QE is organized as 256K × 16, delivering 4 Mbit total capacity with a native 16-bit data bus (DQ0–DQ15). This x16 interface eliminates the need for byte-lane multiplexing in 16-bit microprocessor or DSP systems, and its JEDEC-standard pinout ensures direct compatibility with legacy memory controllers designed for similar density flash parts.
Does the SST39VF400A-70-4C-M1QE support both sector and block erase, and what are their sizes?
Yes, the SST39VF400A-70-4C-M1QE supports uniform 2 KWord sectors (128 total) and 32 KWord blocks (8 total). Sector erase enables fine-grained updates of individual firmware modules, while block erase allows efficient reprogramming of larger functional sections such as communication stacks or UI assets-both operations complete in 18 ms typical, as confirmed in the DS25001A datasheet.
How does the SST39VF400A-70-4C-M1QE handle write protection during power-up or voltage transients?
The SST39VF400A-70-4C-M1QE incorporates hardware write inhibit features including VDD power-up/down detection (locks writes below 1.5 V), <5 ns noise rejection on WE# and CE# pins, and automatic disable when OE# is low or CE# is high. These mechanisms prevent spurious writes during brown-out conditions or EMI events-critical for maintaining firmware integrity in industrial and automotive environments.
What methods does the SST39VF400A-70-4C-M1QE provide to detect completion of program or erase operations?
The SST39VF400A-70-4C-M1QE provides two software-controlled status detection methods: Data# Polling (DQ7), which toggles between complement and true data until completion, and Toggle Bit (DQ6), which alternates logic states during internal operations and stabilizes upon finish. Both are valid after the fourth WE# pulse for programming and sixth for erase-enabling efficient, deterministic host polling without fixed timeout loops.
Is the SST39VF400A-70-4C-M1QE compatible with Common Flash Interface (CFI) readers and auto-configuring bootloaders?
Yes, the SST39VF400A-70-4C-M1QE fully supports CFI via the standard 5555H/98H entry sequence. Once in CFI Query mode, it returns standardized geometry, timing, and command-set descriptors at defined addresses (e.g., device size = 2¹⁹ bytes, interface = x16-only), allowing generic bootloaders to auto-detect and configure memory access parameters without hard-coded assumptions.
SST39VF400A-70-4C-M1QE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- SST39 MPF™
- Package/Case:
- 48-WFBGA
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH
- Memory Size:
- 4Mbit
- Memory Organization:
- 256K x 16
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 20µs
- Access Time:
- 70 ns
- Voltage - Supply:
- 2.7V ~ 3.6V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-WFBGA (6x4)
SST39VF400A-70-4C-M1QE FAQ
1.How can I place an order for SST39VF400A-70-4C-M1QE through Aetrix?
Please submit a Request for Quotation (RFQ) for SST39VF400A-70-4C-M1QE on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for SST39VF400A-70-4C-M1QE reliable?
The price and inventory of SST39VF400A-70-4C-M1QE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SST39VF400A-70-4C-M1QE is usually 5 days.
3.What payment methods are accepted for SST39VF400A-70-4C-M1QE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST39VF400A-70-4C-M1QE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST39VF400A-70-4C-M1QE?
SST39VF400A-70-4C-M1QE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST39VF400A-70-4C-M1QE order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for SST39VF400A-70-4C-M1QE?
For technical support, including SST39VF400A-70-4C-M1QE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST39VF400A-70-4C-M1QE requirements.
6.How does Aetrix verify that SST39VF400A-70-4C-M1QE is sourced from the original manufacturer or authorized distributors?
All SST39VF400A-70-4C-M1QE products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SST39VF400A-70-4C-M1QE meets industry standards.
7.What is the process for return or replacement of SST39VF400A-70-4C-M1QE?
All SST39VF400A-70-4C-M1QE units undergo pre-shipment inspection (PSI). If there is an issue with SST39VF400A-70-4C-M1QE, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The SST39VF400A-70-4C-M1QE part is unused and in its original packaging.
Return procedure for SST39VF400A-70-4C-M1QE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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