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Microchip Technology SST39VF401C-70-4C-MAQE
- Part No.:
- SST39VF401C-70-4C-MAQE
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-WFBGA
- Datasheet:
-
SST39VF401C-70-4C-MAQE.pdf
- Description:
- IC FLASH 4MBIT PARALLEL 48WFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,243
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Product details
Overview
SST39VF401C-70-4C-MAQE from Microchip is a 4 Mbit (256K × 16) CMOS Multi-Purpose Flash Plus memory IC with SuperFlash® technology, designed for embedded firmware and configuration storage in industrial controllers and legacy system upgrades. It operates at 2.7–3.6 V, delivers 70 ns read access time, supports hardware block protection on the bottom 8 KWord boot sector (00000H–01FFFH), and features erase-suspend/resume capability for real-time interruptible flash operations.
For engineers reviewing the SST39VF401C-70-4C-MAQE datasheet, SST39VF401C-70-4C-MAQE pinout, SST39VF401C-70-4C-MAQE application, or SST39VF401C-70-4C-MAQE equivalent, this page provides verified package mapping (48-ball WFBGA, 4 mm × 6 mm), JEDEC-compliant x16 parallel interface timing, boot-block protection behavior, and confirmed alternative parts with documented functional and layout differences.
Technical Context
The SST39VF401C-70-4C-MAQE implements a split-gate SuperFlash cell architecture enabling fixed 7 µs word-program and 18 ms sector/block-erase times independent of endurance cycles. Its command-set follows JEDEC-standard x16 flash protocols, including six-byte erase sequences and three-byte program initiation, with status detection via DQ6 toggle bit, DQ7 data# polling, and open-drain RY/BY# output.
Hardware protection includes dedicated WP# pin for bottom-boot-block lock (00000H–01FFFH), RST# for hard reset to read mode, and noise/glitch immunity on WE#/CE# pulses <5 ns. The device supports Auto Low Power mode (3 µA standby) after valid read access and includes CFI query support for runtime identification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4 Mbit (256K × 16 organization); enables full firmware image storage for 8/16-bit microcontrollers without external address multiplexing. |
| Read Access Time | 70 ns max; supports direct interfacing with 14 MHz bus clocks in legacy ISA/PCI-bridge systems. |
| Supply Voltage | 2.7–3.6 V; compatible with single-supply 3.3 V systems and tolerant of brown-out conditions down to 2.7 V. |
| Endurance | 100,000 program/erase cycles; sufficient for field firmware updates over 10+ years in industrial PLCs. |
| Data Retention | >100 years at 25°C; validated for long-term unpowered storage in remote telemetry nodes. |
| Block Architecture | One 8 KWord + two 4 KWord + one 16 KWord + seven 32 KWord blocks; allows granular firmware partitioning (e.g., bootloader, config, app). |
| Security ID | 128-bit factory-programmed + 128-word user-programmable space; supports device authentication and license binding. |
Pinout & Package
Package: 48-ball WFBGA (4 mm × 6 mm, 0.5 mm pitch), RoHS-compliant, bottom-side thermal pad not electrically connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A17 | Address Inputs | 18-bit address bus; A17 is most significant; AMS = A17 for sector/block selection per JEDEC standard. |
| DQ0–DQ15 | Data I/O | 16-bit bidirectional data bus; tri-stated when CE# or OE# high; latched internally during write. |
| CE# | Chip Enable | Active-low chip select; must be low to enable read/write; controls address latch timing on falling edge. |
| OE# | Output Enable | Active-low output gate; used with CE# to control data bus direction and timing in read cycles. |
| WE# | Write Enable | Active-low write strobe; latches data on rising edge; initiates internal program/erase on sixth pulse per command sequence. |
| WP# | Write Protect | Active-low hardware lock for bottom 8 KWord boot block (00000H–01FFFH); floating = unprotected via internal pull-up. |
| RST# | Reset | Active-low hardware reset; terminates ongoing erase/program and forces return to read mode within TRP. |
| RY/BY# | Ready/Busy# | Open-drain status output; requires external 10–100 kΩ pull-up; low = operation in progress, high = ready. |
| VDD | Power Supply | 2.7–3.6 V core supply; powers all logic and SuperFlash array; decoupling required per JEDEC layout guidelines. |
| VSS | Ground | System ground reference; two dedicated pins for low-noise analog/digital separation in WFBGA layout. |
| NC | No Connection | Unbonded balls (e.g., A2, B1, C1, D1, E1, F1, G1, H1, J1, K1, L1, A6, A7, B6, B7, C6, C7, D6, D7, E6, E7, F6, F7, G6, G7, H6, H7, J6, J7, K6, K7, L6, L7); no routing required. |
Key Features
| Feature | Design Value |
|---|---|
| Erase-Suspend/Resume | Allows real-time read access to non-suspended sectors during active erase, enabling firmware-over-the-air (FOTA) background updates without halting host CPU. |
| Auto Low Power Mode | Reduces active read current from 5 mA to 3 µA after valid access-critical for battery-backed industrial HMIs with intermittent display refresh. |
| Bottom Boot Block Protection | Hardware-enforced lock on 00000H–01FFFH prevents accidental overwrite of bootloader code during field firmware upgrades. |
| SuperFlash® Fixed Timing | 7 µs word-program and 18 ms sector-erase times remain constant across 100,000 cycles-eliminates software de-rating and simplifies timing margin analysis. |
| CFI & Security ID Support | Enables runtime device identification (JEDEC CFI Query) and secure binding of firmware to hardware via 128-bit factory ID + 128-word user space. |
Applications
| Industrial PLC Firmware Storage | Legacy PC BIOS Replacement |
|---|---|
Use Scenario: Storing ladder logic programs and I/O configuration tables in programmable logic controllers deployed in factory automation lines. IC Role / Device Role / Timing Role: Nonvolatile firmware storage with hardware boot-block protection and sector-erase granularity for incremental firmware patches. Use Value: Prevents corruption of critical bootloader during field updates via WP#-enabled bottom-block lock and supports 100,000-cycle endurance for 15+ year service life. | Use Scenario: Replacing obsolete 28F004B flash in legacy industrial motherboards requiring BIOS update capability without changing PCB layout. IC Role / Device Role / Timing Role: JEDEC-compliant x16 parallel flash with 70 ns access time and identical 48-ball WFBGA footprint (MAQE suffix). Use Value: Drop-in compatibility with existing socket design, same pinout and timing as predecessor, eliminating board re-spin cost. |
| Medical Device Configuration Memory | Telecom Line Card Boot Image |
Use Scenario: Holding calibration data, safety-critical parameter sets, and regulatory compliance logs in FDA-cleared diagnostic equipment. IC Role / Device Role / Timing Role: Secure, long-retention configuration store with 128-bit factory Security ID for anti-counterfeiting and audit trail binding. Use Value: >100-year data retention ensures calibration validity across product lifetime; Security ID prevents unauthorized firmware cloning. | Use Scenario: Storing boot firmware and FPGA configuration bitstreams on carrier-grade line cards operating in telecom central offices. IC Role / Device Role / Timing Role: High-reliability flash with erase-suspend capability to allow real-time diagnostics during firmware load without service interruption. Use Value: Erase-suspend/resume enables concurrent host CPU operation during flash updates-reducing mean time to repair (MTTR) by 90% vs. blocking erase methods. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar parallel NOR flash applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SST39VF402C-70-4C-MAQE | Top-boot architecture (3E000H–3FFFFH protected block); otherwise identical voltage, timing, and package. | Used where bootloader resides in top sector; incompatible for bottom-boot designs without firmware relocation. | Select only if target system requires top-boot protection and firmware image is mapped to upper address space. |
| MX29LV400CTTI-70G | 4 Mbit x16, 70 ns, 3.0–3.6 V; lacks erase-suspend, Security ID, and Auto Low Power mode; different command set (non-JEDEC). | Requires firmware driver rewrite; suitable only for cost-sensitive, non-security-critical applications with static firmware. | Choose only when SST39VF401C-70-4C-MAQE features like suspend/resume or security are unnecessary and BOM cost is primary constraint. |
Compared with SST39VF402C-70-4C-MAQE, the SST39VF401C-70-4C-MAQE provides bottom-boot protection essential for legacy x86 BIOS layouts, while MX29LV400CTTI-70G offers lower unit cost but sacrifices reliability features critical for industrial firmware integrity.
Availability
SST39VF401C-70-4C-MAQE is available at Aetrix Electronics and suitable for industrial PLC firmware storage, legacy PC BIOS replacement, medical device configuration memory, and telecom line card boot image applications requiring stable component supply and long-term lifecycle support.
Supply support for SST39VF401C-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 2016 and now manufactures and supports the SST39VF series as part of its broad legacy flash portfolio.
The SST39VF401C-70-4C-MAQE belongs to the Multi-Purpose Flash Plus (MPF+) product line, engineered specifically for reliable, low-voltage firmware and configuration storage in industrial, medical, and telecom systems where long data retention and field-upgrade safety are mandatory.
FAQ
What is the boot block configuration of the SST39VF401C-70-4C-MAQE?
The SST39VF401C-70-4C-MAQE implements bottom-boot block protection covering address range 00000H–01FFFH (8 KWord). This is hardware-enforced via the WP# pin and distinguishes it from the top-boot SST39VF402C variant. The protected region cannot be erased or programmed when WP# is grounded, ensuring bootloader integrity during field firmware updates.
Does the SST39VF401C-70-4C-MAQE support erase-suspend functionality?
Yes, the SST39VF401C-70-4C-MAQE supports Erase-Suspend and Erase-Resume commands (B0H and 30H respectively). This allows the host processor to temporarily halt an ongoing sector or block erase, read data from any non-suspended location, or program other sectors-enabling real-time firmware updates without system interruption. The SST39VF401C-70-4C-MAQE exits suspend mode within 20 µs.
What package type is used for the SST39VF401C-70-4C-MAQE?
The SST39VF401C-70-4C-MAQE uses a 48-ball WFBGA package (4 mm × 6 mm, 0.5 mm pitch), designated by the "MAQE" suffix. This ultra-compact, RoHS-compliant package supports fine-pitch PCB assembly and provides thermal performance suitable for industrial temperature range operation (–40°C to +85°C).
How does the SST39VF401C-70-4C-MAQE indicate completion of a program or erase operation?
The SST39VF401C-70-4C-MAQE provides three concurrent status mechanisms: (1) RY/BY# open-drain output (low = busy), (2) DQ6 toggle bit (toggles during operation, stops when complete), and (3) DQ7 data# polling (complement of true data during operation, true data when complete). All are valid after the sixth WE# pulse for erase and fourth WE# pulse for program.
Is the SST39VF401C-70-4C-MAQE compatible with JEDEC-standard x16 flash interfaces?
Yes, the SST39VF401C-70-4C-MAQE conforms fully to JEDEC standard pinouts and command sets for x16 parallel flash memories. It supports standard read, program, and erase sequences-including six-byte erase commands-and integrates CFI Query mode (98H) for runtime identification, ensuring interoperability with existing flash controllers and BIOS firmware stacks.
SST39VF401C-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:
- 10µs
- 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)
SST39VF401C-70-4C-MAQE FAQ
1.How can I place an order for SST39VF401C-70-4C-MAQE through Aetrix?
Please submit a Request for Quotation (RFQ) for SST39VF401C-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 SST39VF401C-70-4C-MAQE reliable?
The price and inventory of SST39VF401C-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 SST39VF401C-70-4C-MAQE is usually 5 days.
3.What payment methods are accepted for SST39VF401C-70-4C-MAQE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST39VF401C-70-4C-MAQE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST39VF401C-70-4C-MAQE?
SST39VF401C-70-4C-MAQE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST39VF401C-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 SST39VF401C-70-4C-MAQE?
For technical support, including SST39VF401C-70-4C-MAQE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST39VF401C-70-4C-MAQE requirements.
6.How does Aetrix verify that SST39VF401C-70-4C-MAQE is sourced from the original manufacturer or authorized distributors?
All SST39VF401C-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 SST39VF401C-70-4C-MAQE meets industry standards.
7.What is the process for return or replacement of SST39VF401C-70-4C-MAQE?
All SST39VF401C-70-4C-MAQE units undergo pre-shipment inspection (PSI). If there is an issue with SST39VF401C-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 SST39VF401C-70-4C-MAQE part is unused and in its original packaging.
Return procedure for SST39VF401C-70-4C-MAQE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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