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Microchip Technology SST39VF400A-70-4I-M1QE
- Part No.:
- SST39VF400A-70-4I-M1QE
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-WFBGA
- Datasheet:
-
SST39VF400A-70-4I-M1QE.pdf
- Description:
- IC FLASH 4MBIT PARALLEL 48WFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,417
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Product details
Overview
SST39VF400A-70-4I-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 uniform 2 KWord sector erase and 32 KWord block erase for embedded firmware storage in industrial control systems.
For engineers reviewing the SST39VF400A-70-4I-M1QE datasheet, SST39VF400A-70-4I-M1QE pinout, SST39VF400A-70-4I-M1QE application, or SST39VF400A-70-4I-M1QE equivalent, key selection criteria include its industrial temperature range (–40°C to +85°C), SuperFlash® endurance (100,000 program/erase cycles), 14 µs word-program time, and hardware/software data protection compliance with JEDEC flash command sets.
Technical Context
This device implements SST's proprietary SuperFlash® technology with split-gate cell architecture and thick-oxide tunneling injector, enabling fixed erase/program timing independent of cycle count. It supports standard asynchronous parallel bus operations via CE#, OE#, and WE# control signals with latched address/data inputs.
Operation modes include Read, Word-Program, Sector-Erase, Block-Erase, Chip-Erase, and CFI Query-all initiated via JEDEC-compliant six-byte command sequences. End-of-write detection uses DQ7 (Data# Polling) and DQ6 (Toggle Bit), both validated after the sixth WE# pulse for erase commands.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4 Mbit (256K × 16), providing 512 KB of nonvolatile storage for boot code or configuration data |
| Read Access Time | 70 ns - enables direct execution from flash (XIP) in systems with ≤14 MHz bus timing budgets |
| Supply Voltage | 2.7–3.6 V - supports wide-input industrial power rails without external regulation |
| Endurance | 100,000 program/erase cycles - ensures field-updatable firmware reliability over 10+ years in deployed equipment |
| Data Retention | >100 years - guarantees long-term data integrity without refresh in unpowered storage |
| Word-Program Time | 14 µs - reduces firmware update latency and minimizes system downtime during field upgrades |
| Erase Granularity | 2 KWord sectors (4 KB) and 32 KWord blocks (64 KB) - allows selective firmware patching without full chip erase |
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/lower half of 4 Mbit array per JEDEC mapping |
| DQ0–DQ15 | Data I/O | x16 bidirectional data bus; outputs tri-stated when CE# or OE# high; internally latched during write |
| CE# | Chip Enable | Active-low chip select; device enters standby (3 µA) when high; required low for all operations |
| OE# | Output Enable | Active-low output gate; controls data bus drive during read; high disables outputs |
| WE# | Write Enable | Active-low write strobe; latches address/data on falling/rising edges per JEDEC timing protocol |
| VDD | Power Supply | 2.7–3.6 V supply; powers core logic and memory array; internal VPP generation eliminates external high-voltage requirement |
| VSS | Ground | Two dedicated ground pins (pins 23 and 48) reduce noise coupling and improve signal integrity |
| NC | No Connect | Pins 9, 10, 12–16, 18, 19, 21, 22, 24, 25, 27, 29, 31, 33, 35, 37, 39, 41, 43, 45, 47 - electrically isolated, must be left floating |
Key Features
| Feature | Design Value |
|---|---|
| SuperFlash® Technology | Split-gate cell design enables fixed 14 µs program and 18 ms sector/block erase times across full lifecycle |
| JEDEC-Compliant Command Set | Fully compatible with industry-standard flash controllers and bootloader firmware without custom driver development |
| Hardware + Software Data Protection | Glitch-resistant WE#/CE# filtering, VDD power-on detection, and mandatory 6-byte erase/3-byte program command sequences prevent accidental writes |
| CFI Query Support | Enables automatic runtime identification of density, timing, and geometry parameters by host BIOS or bootloader |
| Industrial Temperature Range | –40°C to +85°C operation certified per datasheet - suitable for factory automation, motor drives, and outdoor infrastructure |
Applications
| Industrial PLC Firmware Storage | Medical Device Configuration Memory |
|---|---|
Use Scenario: Storing ladder logic programs and I/O mapping tables in programmable logic controllers deployed in harsh factory environments. IC Role / Device Role / Timing Role: Nonvolatile code storage with XIP-capable 70 ns read access and sector-erase for incremental firmware updates. Use Value: Enables field-deployed PLCs to retain operational logic through power loss and support secure remote updates without full reflash. | Use Scenario: Holding calibration coefficients, safety-critical configuration profiles, and audit logs in FDA-cleared diagnostic imaging equipment. IC Role / Device Role / Timing Role: High-reliability parameter storage with >100-year data retention and 100,000-cycle endurance for regulatory-compliant device lifecycle. Use Value: Guarantees traceable, tamper-resistant configuration persistence across 15+ year product service life without battery backup. |
| Automotive Body Control Module (BCM) | Network Equipment Bootloader Storage |
Use Scenario: Storing lighting control algorithms, window/mirror position presets, and CAN message routing tables in under-hood BCMs. IC Role / Device Role / Timing Role: Industrial-grade flash memory operating at –40°C to +85°C with hardware write inhibit during cold cranking voltage dips. Use Value: Eliminates need for external voltage supervisors or EEPROM co-location while meeting AEC-Q100 stress requirements. | Use Scenario: Hosting U-Boot or Coreboot images and hardware initialization scripts in enterprise switches and routers. IC Role / Device Role / Timing Role: Parallel x16 boot memory with fast 70 ns read and deterministic 14 µs word-program for rapid firmware recovery. Use Value: Reduces boot time by 35% vs. SPI NOR and supports secure dual-image failover via independent sector erase. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SST39VF400A-70-4C-M1QE | Commercial temperature grade (0°C to +70°C); identical electrical specs and pinout | Limited to climate-controlled indoor applications; not rated for extended thermal cycling | Select only for cost-sensitive consumer electronics where ambient never exceeds 70°C |
| MX29LV400CTTI-70G | 4 Mbit x16, 70 ns, 3.0–3.6 V; requires different command sequence and lacks CFI query support | Requires firmware driver modification; no runtime geometry auto-detection capability | Choose only when migrating legacy designs with existing Macronix driver stack and no CFI dependency |
Compared with SST39VF400A-70-4C-M1QE, the -4I variant adds guaranteed operation down to –40°C and enhanced data retention stability across thermal extremes; versus MX29LV400CTTI-70G, it provides seamless CFI integration and deterministic SuperFlash® timing for simplified bootloader development.
Availability
SST39VF400A-70-4I-M1QE is available at Aetrix Electronics and suitable for industrial control, medical diagnostics, automotive body electronics, and network infrastructure requiring stable component supply with long-term lifecycle assurance.
Supply support for SST39VF400A-70-4I-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 semiconductor company specializing in microcontrollers, analog devices, and memory solutions, with leadership in embedded control and secure connectivity.
SST39VF400A-70-4I-M1QE belongs to Microchip's SuperFlash® Multi-Purpose Flash family, designed specifically for reliable, low-power, field-upgradable firmware and configuration storage in industrial and automotive applications.
FAQ
What is the maximum operating temperature range for SST39VF400A-70-4I-M1QE?
The SST39VF400A-70-4I-M1QE is rated for industrial temperature operation from –40°C to +85°C, as specified in the DS25001A datasheet. This range is validated across all electrical parameters including read access time, program/erase timing, and data retention. The "I" suffix in the part number explicitly denotes industrial grade, distinguishing it from commercial-grade variants like SST39VF400A-70-4C-M1QE.
Does SST39VF400A-70-4I-M1QE require an external VPP voltage for programming?
No, SST39VF400A-70-4I-M1QE does not require an external VPP voltage. It features internal VPP generation powered solely by the 2.7–3.6 V VDD supply, eliminating the need for high-voltage programming circuitry. This is confirmed in the "Automatic Write Timing" feature section and Table 6 of the DS25001A datasheet, which lists VPP min/max as 0000H (no VPP pin).
How many erase sectors does SST39VF400A-70-4I-M1QE contain, and what is their size?
SST39VF400A-70-4I-M1QE contains 128 uniform sectors, each sized at 2 KWords (4 KB), as defined in Table 8 of the DS25001A datasheet. Sector addressing uses AMS–A11 lines (where AMS = A17 for this 4 Mbit device), enabling precise firmware patching without disturbing adjacent functional code blocks.
Is SST39VF400A-70-4I-M1QE pin-compatible with SST39LF400A-70-4I-M1QE?
No, SST39VF400A-70-4I-M1QE is not pin-compatible with SST39LF400A-70-4I-M1QE. While both share identical 48-pin TSOP packaging and JEDEC x16 pinout, the SST39LF400A requires 3.0–3.6 V for program/erase, whereas the SST39VF400A operates at 2.7–3.6 V. Substituting one for the other risks write failure or reduced reliability outside the valid VDD range.
What command sequence is required to initiate a sector erase on SST39VF400A-70-4I-M1QE?
To initiate sector erase on SST39VF400A-70-4I-M1QE, execute the six-byte JEDEC command sequence: 5555H/AAH → 2AAAH/55H → 5555H/80H → 5555H/AAH → 2AAAH/55H → Sector-Address/30H. The sector address is latched on the falling edge of the sixth WE# pulse, and the command (30H) on its rising edge, per Figure 11 and Table 4 of DS25001A.
SST39VF400A-70-4I-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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-WFBGA (6x4)
SST39VF400A-70-4I-M1QE FAQ
1.How can I place an order for SST39VF400A-70-4I-M1QE through Aetrix?
Please submit a Request for Quotation (RFQ) for SST39VF400A-70-4I-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-70-4I-M1QE reliable?
The price and inventory of SST39VF400A-70-4I-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-70-4I-M1QE is usually 5 days.
3.What payment methods are accepted for SST39VF400A-70-4I-M1QE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST39VF400A-70-4I-M1QE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST39VF400A-70-4I-M1QE?
SST39VF400A-70-4I-M1QE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST39VF400A-70-4I-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-70-4I-M1QE?
For technical support, including SST39VF400A-70-4I-M1QE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST39VF400A-70-4I-M1QE requirements.
6.How does Aetrix verify that SST39VF400A-70-4I-M1QE is sourced from the original manufacturer or authorized distributors?
All SST39VF400A-70-4I-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-70-4I-M1QE meets industry standards.
7.What is the process for return or replacement of SST39VF400A-70-4I-M1QE?
All SST39VF400A-70-4I-M1QE units undergo pre-shipment inspection (PSI). If there is an issue with SST39VF400A-70-4I-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-70-4I-M1QE part is unused and in its original packaging.
Return procedure for SST39VF400A-70-4I-M1QE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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