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Microchip Technology SST39VF402C-70-4I-MAQE
- Part No.:
- SST39VF402C-70-4I-MAQE
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-WFBGA
- Datasheet:
-
SST39VF402C-70-4I-MAQE.pdf
- Description:
- IC FLASH 4MBIT PARALLEL 48WFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:4,800
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Product details
Overview
SST39VF402C-70-4I-MAQE from Microchip is a 4 Mbit (256K × 16) Multi-Purpose Flash Plus (MPF+) memory IC with SuperFlash® technology, designed for embedded firmware and configuration storage in industrial and communications systems. It operates at 2.7–3.6 V, delivers 70 ns read access time, supports sector/block/chip erase, and features hardware write protection via WP# pin for top-boot block (3E000H–3FFFFH).
For engineers reviewing the SST39VF402C-70-4I-MAQE datasheet, SST39VF402C-70-4I-MAQE pinout, SST39VF402C-70-4I-MAQE application, or SST39VF402C-70-4I-MAQE equivalent, this page provides verified technical context, JEDEC-compliant x16 interface details, boot-block protection mapping, SuperFlash endurance/reliability metrics, and real-world design implications for firmware update architectures.
Technical Context
This device implements a split-gate SuperFlash® cell architecture with thick-oxide tunneling injector, enabling fixed 7 µs word-program and 18 ms sector/block-erase times independent of cycle count-eliminating software de-rating. It uses standard microprocessor bus timing with latched address/data on CE#/WE# edges and supports JEDEC-standard command sets including CFI Query and Security ID.
Hardware block protection targets the top 8 KWord (3E000H–3FFFFH) via WP# grounding; RY/BY# open-drain status output requires external 10–100 kΩ pull-up. Erase-suspend/resume allows concurrent read/program during active erase, with DQ2/DQ6 toggle bits and DQ7 data-polling for end-of-write detection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4 Mbit (256K × 16), directly maps to 512 KB of x16 data space for firmware image storage |
| Read Access Time | 70 ns - enables direct execution (XIP) from flash in 14 MHz bus systems without wait states |
| Supply Voltage | 2.7–3.6 V - compatible with 3.3 V logic rails and brown-out tolerant down to 2.7 V |
| Endurance | 100,000 program/erase cycles - supports field firmware updates over 10+ years at 27 cycles/day |
| Data Retention | >100 years - ensures long-term reliability in unpowered storage for industrial control logs |
| Word-Program Time | 7 µs typical - reduces firmware patch latency; internal VPP generation eliminates external charge pump |
| Erase Architecture | Uniform 2 KWord sectors + flexible blocks (seven 32K, one 16K, two 4K, one 8K) - enables granular update partitioning |
Pinout & Package
Package: 48-ball WFBGA (4 mm × 6 mm), RoHS-compliant, fine-pitch surface-mount package optimized for high-density PCB layouts in space-constrained embedded modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A17 | Address Inputs | Latched on falling edge of CE# or WE#; AMS = A17 for sector/block selection (AMS–A11 for sector, AMS–A15 for block) |
| DQ0–DQ15 | Data I/O | 16-bit bidirectional bus; tri-stated when CE# or OE# high; latched during write; DQ6/DQ2 = toggle bits, DQ7 = data-polling |
| CE# | Chip Enable | Active-low chip select; must be low to initiate any operation (read, program, erase); controls address latch timing |
| OE# | Output Enable | Active-low output gate; high impedance when high; used with CE# to enable read data flow |
| WE# | Write Enable | Active-low write control; latches data on rising edge; initiates command sequences and internal timing |
| WP# | Write Protect | Active-low hardware lock for top 8 KWord boot block (3E000H–3FFFFH); floating = internally pulled high = unprotected |
| RST# | Reset | Active-low hardware reset; forces return to read mode; required TRP low pulse to abort ongoing erase/program |
| RY/BY# | Ready/Busy# | Open-drain status output; low = erase/program in progress; requires external pull-up; shared across multiple devices |
| VDD | Power Supply | 2.7–3.6 V supply; powers core and I/O; internal regulation supports stable programming across voltage range |
| VSS | Ground | Digital ground reference; two dedicated pins ensure low-noise return path for high-speed bus transitions |
Key Features
| Feature | Design Value |
|---|---|
| SuperFlash® Technology | Split-gate cell with thick-oxide injector enables fixed 7 µs program / 18 ms erase times - no software aging compensation needed |
| Top Boot Block Protection | Hardware lock on 3E000H–3FFFFH (8 KWord) via WP# pin - prevents accidental overwrite of bootloader code |
| Erase-Suspend/Resume | Pause active sector/block erase to read any non-suspended location or program other sectors - enables real-time firmware validation |
| Security ID Space | 128-bit factory-programmed ID + 128-word user-programmable segment - supports secure device authentication and version tracking |
| CFI Compliance | JEDEC-standard Common Flash Interface - enables OS/driver auto-detection and standardized flash management middleware |
| Auto Low Power Mode | Reduces active read current from 5 mA to 3 µA after valid read - cuts standby power in always-on IoT gateways |
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 environments. IC Role / Device Role / Timing Role: Nonvolatile program memory providing XIP-capable 70 ns read access and robust 100,000-cycle endurance for field firmware patches. Use Value: Top-boot hardware protection prevents corruption of critical bootloader during remote firmware upgrades over Modbus TCP. |
Use Scenario: Holding RF calibration parameters, DSP filter coefficients, and protocol stack configuration in 4G/LTE small-cell baseband units. IC Role / Device Role / Timing Role: Configuration memory with sector-erase granularity enabling selective update of calibration data without resetting full radio subsystem. Use Value: Erase-suspend capability allows real-time read of active calibration values while background reprogramming of adjacent sectors. |
| Medical Device Bootloader | Automotive Infotainment UI Assets |
Use Scenario: Securing certified bootloader code in FDA-class II medical instruments requiring traceable firmware revision control and anti-tampering. IC Role / Device Role / Timing Role: Trusted boot memory with 128-bit factory Security ID and user-programmable ID segment for cryptographic binding. Use Value: Hardware WP# lock on top-boot block ensures bootloader integrity; CFI compliance simplifies UEFI capsule update integration. |
Use Scenario: Storing graphical assets (icons, fonts, animations) and localized language strings in automotive head units with frequent OTA UI updates. IC Role / Device Role / Timing Role: High-reliability data storage with >100-year retention and 3 µA standby current for always-connected infotainment systems. Use Value: Flexible block-erase architecture (32K/16K/4K/8K) enables atomic UI asset swaps without erasing entire firmware partition. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SST39VF401C-70-4I-MAQE | Bottom-boot architecture (00000H–01FFFH protected); identical timing, voltage, and endurance specs | Requires firmware partitioning with protected bootloader at lowest address instead of highest | Select when legacy system design mandates bottom-boot layout or shares PCB footprint with SST39VF401C |
| MX29LV400CTTI-70G | 4 Mbit x16, 70 ns, 3.0–3.6 V only; bottom-boot; lacks Security ID and erase-suspend; different command set | No hardware suspend/resume support; limited security features; CFI-compatible but not pin-for-pin | Choose for cost-sensitive designs where erase-suspend and secure ID are unnecessary and 3.0 V minimum supply is acceptable |
Compared with SST39VF402C-70-4I-MAQE, SST39VF401C-70-4I-MAQE offers identical performance but inverted boot-block placement, while MX29LV400CTTI-70G trades advanced SuperFlash features for lower unit cost and simpler command handling in non-security-critical applications.
Availability
SST39VF402C-70-4I-MAQE is available at Aetrix Electronics and suitable for industrial PLCs, telecom base stations, medical diagnostic equipment, and automotive infotainment systems requiring stable component supply, long-life firmware storage, and guaranteed obsolescence management.
Supply support for SST39VF402C-70-4I-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 Inc. is a leading provider of microcontrollers, analog components, and memory solutions, acquired Silicon Storage Technology (SST) in 2016 to expand its serial and parallel flash portfolio.
The SST39VF402C belongs to the Multi-Purpose Flash Plus (MPF+) product line, engineered for high-reliability embedded firmware and configuration storage in industrial, medical, and communications equipment where endurance, data retention, and secure update capability are critical.
FAQ
What is the boot block configuration of SST39VF402C-70-4I-MAQE?
The SST39VF402C-70-4I-MAQE implements top-boot block protection, securing the upper 8 KWord (3E000H–3FFFFH) from inadvertent erase/program when WP# is grounded. This layout isolates the bootloader at the highest address range, ensuring firmware recovery capability even if application sectors are corrupted. The SST39VF402C-70-4I-MAQE datasheet confirms this mapping in Table 4 and Figure 2.
Does SST39VF402C-70-4I-MAQE support execute-in-place (XIP) operation?
Yes, SST39VF402C-70-4I-MAQE supports XIP with its 70 ns read access time and standard JEDEC x16 bus interface. When interfaced with a microcontroller or FPGA using CE# and OE# control, the device delivers valid data within 70 ns of address stabilization, enabling zero-wait-state code execution from flash in systems with ≤14 MHz bus clocks. The SST39VF402C-70-4I-MAQE's latched address/data architecture ensures timing predictability.
How does the erase-suspend feature work in SST39VF402C-70-4I-MAQE?
The SST39VF402C-70-4I-MAQE supports erase-suspend via the B0H command, pausing an active sector or block erase to allow reads from any non-suspended location or word-program operations elsewhere. During suspend, DQ2 toggles when reading suspended sectors, while DQ6 remains high. Resume uses the 30H command. This enables real-time validation of updated firmware sections without halting the entire erase process - a capability confirmed in Section 7 of the SST39VF402C-70-4I-MAQE datasheet.
What is the purpose of the Security ID feature in SST39VF402C-70-4I-MAQE?
The SST39VF402C-70-4I-MAQE includes a 128-bit factory-programmed Security ID and a 128-word user-programmable segment for device authentication and traceability. The factory ID is locked at manufacture; the user segment can be programmed via the A5H command and locked with 85H to prevent tampering. Neither segment is erasable. This feature enables secure boot binding and firmware version verification - explicitly documented in Section 12 of the SST39VF402C-70-4I-MAQE datasheet.
Is SST39VF402C-70-4I-MAQE compatible with standard JEDEC flash command sets?
Yes, SST39VF402C-70-4I-MAQE fully complies with JEDEC Standard JESD21-C for x16 flash pinouts and command sets, including CFI Query (98H), Software ID Entry (90H), and industry-standard program/erase sequences. Its command table (Table 7) matches JEDEC-specified opcodes and timing, ensuring interoperability with generic flash drivers and middleware. This JEDEC alignment is stated in the "Features" section and validated across all operational modes in Table 6 of the SST39VF402C-70-4I-MAQE datasheet.
SST39VF402C-70-4I-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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-WFBGA (6x4)
SST39VF402C-70-4I-MAQE FAQ
1.How can I place an order for SST39VF402C-70-4I-MAQE through Aetrix?
Please submit a Request for Quotation (RFQ) for SST39VF402C-70-4I-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 SST39VF402C-70-4I-MAQE reliable?
The price and inventory of SST39VF402C-70-4I-MAQE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SST39VF402C-70-4I-MAQE is usually 5 days.
3.What payment methods are accepted for SST39VF402C-70-4I-MAQE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST39VF402C-70-4I-MAQE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST39VF402C-70-4I-MAQE?
SST39VF402C-70-4I-MAQE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST39VF402C-70-4I-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 SST39VF402C-70-4I-MAQE?
For technical support, including SST39VF402C-70-4I-MAQE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST39VF402C-70-4I-MAQE requirements.
6.How does Aetrix verify that SST39VF402C-70-4I-MAQE is sourced from the original manufacturer or authorized distributors?
All SST39VF402C-70-4I-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 SST39VF402C-70-4I-MAQE meets industry standards.
7.What is the process for return or replacement of SST39VF402C-70-4I-MAQE?
All SST39VF402C-70-4I-MAQE units undergo pre-shipment inspection (PSI). If there is an issue with SST39VF402C-70-4I-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 SST39VF402C-70-4I-MAQE part is unused and in its original packaging.
Return procedure for SST39VF402C-70-4I-MAQE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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