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Microchip Technology SST39VF400A-70-4C-MAQE
- Part No.:
- SST39VF400A-70-4C-MAQE
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-WFBGA
- Datasheet:
-
SST39VF400A-70-4C-MAQE.pdf
- Description:
- IC FLASH 4MBIT PARALLEL 48WFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:684
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Product details
Overview
SST39VF400A-70-4C-MAQE from Microchip Technology is a 4 Mbit (256K × 16) CMOS Multi-Purpose Flash memory IC with 2.7–3.6 V single-supply operation, 70 ns read access time, JEDEC-standard x16 asynchronous interface, and SuperFlash® split-gate technology enabling 100,000 program/erase cycles and >100 years data retention. It serves as nonvolatile code/data storage in embedded controllers, industrial HMIs, and legacy BIOS modules.
For engineers reviewing the SST39VF400A-70-4C-MAQE datasheet, SST39VF400A-70-4C-MAQE pinout, SST39VF400A-70-4C-MAQE application, or SST39VF400A-70-4C-MAQE equivalent, key selection criteria include its 48-pin TSOP-I package, sector/block-erase architecture (2 KWord sectors / 32 KWord blocks), hardware/software write protection, toggle-bit/data# polling status detection, and compatibility with standard x16 memory bus timing.
Technical Context
This device implements an asynchronous parallel interface with CE#, OE#, and WE# control signals, supporting Word-Program, Sector-Erase, Block-Erase, and Chip-Erase via JEDEC-compliant command sequences. Its SuperFlash® cell structure enables fixed erase/program times independent of wear level.
It features latched address/data inputs, tri-state outputs controlled by CE# and OE#, internal VPP generation for programming, and dual end-of-write detection (DQ6 toggle bit and DQ7 data# polling). The device conforms to CFI (Common Flash Interface) and supports Software Product Identification and CFI Query modes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4 Mbit (256K × 16 organization) - provides 512 KB of x16-addressable nonvolatile storage |
| Read Access Time | 70 ns - determines minimum bus cycle time for reliable read operations at full speed |
| Supply Voltage Range | 2.7–3.6 V - enables direct integration into 3.3 V systems without level-shifting or external regulators |
| Endurance | 100,000 program/erase cycles - supports frequent firmware updates in field-deployed equipment |
| Data Retention | >100 years - ensures long-term reliability in unpowered storage applications |
| Erase Architecture | Uniform 2 KWord sectors and 32 KWord blocks - allows granular firmware patching without full-chip erasure |
| Write Timing | 14 µs word-program time - reduces system wait states during in-field reprogramming |
Pinout & Package
Package: 48-lead TSOP-I (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 512K-word space (per datasheet Figure 2) |
| DQ0–DQ15 | Data I/O | x16 bidirectional data bus with internal latching and tri-state output control via CE#/OE# |
| CE# | Chip Enable | Active-low chip select - disables device and reduces current to 20 µA standby when high |
| OE# | Output Enable | Active-low output gate - controls data bus tristate independently of CE# for read multiplexing |
| WE# | Write Enable | Active-low write strobe - initiates command loading, program, or erase on rising edge per JEDEC sequence |
| VDD | Power Supply | 2.7–3.6 V core supply - powers logic and SuperFlash® tunneling; no external VPP required |
| VSS | Ground | Two dedicated ground pins (pins 23 and 47) - reduce noise coupling in high-speed read/write transitions |
| NC | No Connection | Pins 9, 10, 12–15, 18, 20, 21, 22, 24, 25, 26, 28, 29, 31, 32, 34, 35, 36, 37, 39, 40, 41, 42, 44, 45 - electrically isolated; must be left floating or tied to ground per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| SuperFlash® Technology | Split-gate cell with thick-oxide injector enables fixed 14 µs program and 18 ms sector/block erase times across full endurance life |
| JEDEC x16 Pinout Compliance | Direct drop-in replacement for industry-standard parallel flash devices without PCB redesign |
| Hardware + Software Write Protection | Glitch filtering (<5 ns), VDD power-up/down lockout, and mandatory 3-byte/6-byte command sequences prevent accidental writes |
| CFI and Software ID Support | Enables automatic detection of density, timing, and manufacturer ID (00BFH/2780H) in boot firmware and flash utilities |
| Low Power Standby | 20 µA typical ISB - suitable for battery-backed or energy-sensitive embedded systems |
Applications
| Industrial PLC Firmware Storage | Legacy PC BIOS/UEFI Module |
|---|---|
Use Scenario: Storing and updating ladder logic firmware in programmable logic controllers operating in harsh factory environments with wide temperature swings. IC Role / Device Role / Timing Role: Nonvolatile code storage with in-system reprogrammability via RS-232 or CAN-based bootloader; 70 ns access meets real-time scan cycle timing. Use Value: 100,000-cycle endurance supports quarterly firmware patches over 10+ years; 2.7–3.6 V range accommodates brown-out conditions without backup power. | Use Scenario: Holding BIOS/UEFI initialization code and configuration data in desktop motherboards and embedded x86 platforms requiring backward-compatible flash interfaces. IC Role / Device Role / Timing Role: x16 parallel boot ROM mapped at reset vector; JEDEC compliance ensures compatibility with Intel chipset memory controllers. Use Value: Sector-erase capability allows selective update of ACPI tables or SMBIOS without disrupting boot code; CFI support enables universal flash programming tools. |
| Medical Device Configuration Memory | Telecom Line Card Boot Image |
Use Scenario: Storing calibration coefficients, user preferences, and safety-critical configuration parameters in FDA-cleared diagnostic instruments with long product lifecycles. IC Role / Device Role / Timing Role: Secure, tamper-resistant nonvolatile memory accessed only during power-on self-test or service mode; software data protection prevents unauthorized modification. Use Value: >100-year data retention eliminates recalibration drift concerns; hardware write inhibit during power ramp ensures integrity during cold starts. | Use Scenario: Hosting boot firmware and FPGA configuration bitstreams on carrier-grade telecom line cards requiring hot-swap capability and field upgrades. IC Role / Device Role / Timing Role: Dual-image storage (active/backup) with block-erase isolation - enables atomic firmware swaps without service interruption. Use Value: 32 KWord block erase allows full image replacement in ≤18 ms; low active current (9 mA typ.) minimizes thermal load in dense card stacks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar parallel flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MX29LV400CBTI-70G | 4 Mbit x16, 70 ns, 2.7–3.6 V, but uses different command set and lacks CFI support | Requires modified bootloader for erase/write commands; no automatic density detection | Select when cost sensitivity outweighs firmware portability and toolchain compatibility |
| EN29LV400AB-70TP | 4 Mbit x16, 70 ns, 2.7–3.6 V, supports CFI but has slower 200 ms chip-erase time vs. 70 ms | Longer downtime during full firmware recovery; same JEDEC pinout and command compatibility | Select when CFI is required but chip-erase frequency is low and timing margin exists |
Compared with MX29LV400CBTI-70G and EN29LV400AB-70TP, the SST39VF400A-70-4C-MAQE delivers faster chip-erase (70 ms), guaranteed CFI compliance, and tighter program/erase timing consistency across lifetime - critical for automated test and high-reliability field updates.
Availability
SST39VF400A-70-4C-MAQE is available at Aetrix Electronics and suitable for industrial control systems, legacy computing platforms, medical diagnostics equipment, and telecom infrastructure requiring stable component supply and long-term obsolescence management.
Supply support for SST39VF400A-70-4C-MAQE 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 acquired Silicon Storage Technology (SST) in 2010 and now manufactures and supports the SST39VF series as part of its broad legacy and industrial flash portfolio.
The SST39VF400A-70-4C-MAQE belongs to the SST39VF family of Multi-Purpose Flash devices designed specifically for cost-sensitive, high-reliability embedded applications requiring pin-compatible migration from older EPROM or parallel NOR flash technologies.
FAQ
What is the exact memory organization and density of the SST39VF400A-70-4C-MAQE?
The SST39VF400A-70-4C-MAQE is organized as 256K words × 16 bits, delivering 4 Mbit (512 KB) of nonvolatile storage. This is confirmed by Table 8 in DS25001A, where device geometry register 27H = 0013H (2¹⁹ = 524,288 words), and datasheet section "Product Description" explicitly states "SST39VF400A … 256K x16". The -4C suffix denotes commercial temperature grade (0°C to +70°C).
Does the SST39VF400A-70-4C-MAQE require an external VPP voltage for programming?
No, the SST39VF400A-70-4C-MAQE does not require an external VPP voltage. It uses internal charge pump circuitry to generate the high voltage needed for programming and erasing. This is stated in the "Features" list ("Automatic Write Timing – Internal VPP Generation") and confirmed in Table 6, where VPP min/max registers (1DH–1EH) are both 0000H, indicating no VPP pin or external supply is used.
How does the SST39VF400A-70-4C-MAQE signal completion of a Program or Erase operation?
The SST39VF400A-70-4C-MAQE provides two hardware-supported methods: Data# Polling (DQ7) and Toggle Bit (DQ6). During internal Program, DQ7 returns complemented data until completion, then true data; during Erase, DQ7 reads '0' then '1'. DQ6 toggles between 0 and 1 during the operation and stops upon completion. Both are valid after the fourth (Program) or sixth (Erase) WE# pulse, as defined in DS25001A sections 7–8.
What package type is used for the SST39VF400A-70-4C-MAQE, and is it RoHS compliant?
The SST39VF400A-70-4C-MAQE uses a 48-lead TSOP-I (Thin Small Outline Package) measuring 12 mm × 20 mm, as specified in the "Packages Available" section and Figure 2 of DS25001A. It is RoHS compliant and lead-free, per the statement "All non-Pb (lead-free) devices are RoHS compliant" and the "-MAQE" suffix, which Microchip designates for green, halogen-free, lead-free TSOP packaging.
Can the SST39VF400A-70-4C-MAQE be used in industrial temperature applications?
No, the SST39VF400A-70-4C-MAQE is rated only for commercial temperature range (0°C to +70°C), as indicated by the "-4C" suffix per Microchip's naming convention and the "Operating Range" table on page 14 of DS25001A. For industrial use (–40°C to +85°C), the correct variant is SST39VF400A-70-4I-MAQE (with "-4I" suffix), which shares identical electrical specs but is qualified across the extended range.
SST39VF400A-70-4C-MAQE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- SST39 MPF™
- Package/Case:
- 48-WFBGA
- Packaging:
- Tray
- Product Status:
- Active
- 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-MAQE FAQ
1.How can I place an order for SST39VF400A-70-4C-MAQE through Aetrix?
Please submit a Request for Quotation (RFQ) for SST39VF400A-70-4C-MAQE 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-MAQE reliable?
The price and inventory of SST39VF400A-70-4C-MAQE 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-MAQE is usually 5 days.
3.What payment methods are accepted for SST39VF400A-70-4C-MAQE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST39VF400A-70-4C-MAQE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST39VF400A-70-4C-MAQE?
SST39VF400A-70-4C-MAQE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST39VF400A-70-4C-MAQE 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-MAQE?
For technical support, including SST39VF400A-70-4C-MAQE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST39VF400A-70-4C-MAQE requirements.
6.How does Aetrix verify that SST39VF400A-70-4C-MAQE is sourced from the original manufacturer or authorized distributors?
All SST39VF400A-70-4C-MAQE 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-MAQE meets industry standards.
7.What is the process for return or replacement of SST39VF400A-70-4C-MAQE?
All SST39VF400A-70-4C-MAQE units undergo pre-shipment inspection (PSI). If there is an issue with SST39VF400A-70-4C-MAQE, 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-MAQE part is unused and in its original packaging.
Return procedure for SST39VF400A-70-4C-MAQE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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