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Microchip Technology SST39VF402C-70-4C-MAQE-T
- Part No.:
- SST39VF402C-70-4C-MAQE-T
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-WFBGA
- Datasheet:
-
SST39VF402C-70-4C-MAQE-T.pdf
- Description:
- IC FLASH 4MBIT PARALLEL 48WFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,085
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Product details
Overview
SST39VF402C-70-4C-MAQE-T from Microchip is a 4 Mbit (256K × 16) CMOS Multi-Purpose Flash Plus memory IC with SuperFlash® technology, operating at 2.7–3.6V, featuring 70 ns read access time, hardware top-block protection (3E000H–3FFFFH), and JEDEC-standard x16 parallel interface for embedded firmware storage in industrial controllers.
For engineers reviewing the SST39VF402C-70-4C-MAQE-T datasheet, SST39VF402C-70-4C-MAQE-T pinout, SST39VF402C-70-4C-MAQE-T application, or SST39VF402C-70-4C-MAQE-T equivalent, this page delivers verified package mapping (48-ball WFBGA), confirmed sector/block erase architecture, validated RY/BY# and WP# behavior, and real-world timing constraints for boot code storage integration.
Technical Context
The SST39VF402C-70-4C-MAQE-T implements a split-gate SuperFlash® cell with thick-oxide tunneling injector, enabling fixed 7 µs word-program and 18 ms sector-erase times independent of endurance cycles. It supports JEDEC-standard command sets including Software Data Protection (three-byte unlock + program/erase sequences) and CFI Query mode via 555H/98H.
Its 48-ball WFBGA (4mm × 6mm) package conforms to x16 parallel bus timing with latched address/data, active-low CE#/OE#/WE#, open-drain RY/BY#, and dedicated WP# for top 8 KWord (3E000H–3FFFFH) hardware block protection - distinct from SST39VF401C's bottom-boot configuration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4 Mbit (256K × 16 organization), directly maps to 512 KB of 16-bit data space |
| Read Access Time | 70 ns maximum - determines minimum bus cycle time for reliable firmware fetch in 80 MHz CPU interfaces |
| Supply Voltage | 2.7–3.6V - enables direct connection to 3.3V logic rails without level-shifting or external regulators |
| Endurance | 100,000 program/erase cycles - supports field firmware updates over 10+ years in industrial gateways |
| Data Retention | Greater than 100 years - ensures boot code integrity across product lifecycle without refresh |
| Word-Program Time | 7 µs typical - enables fast patch writes during runtime without blocking system execution |
| Sector-Erase Time | 18 ms typical - allows rapid reconfiguration of parameter sectors while maintaining system responsiveness |
Pinout & Package
Package: 48-ball WFBGA (4 mm × 6 mm, 0.5 mm pitch), ball-down orientation per Figure 4. Pin functions validated per Table 1 and Figure 4 of DS20005053B.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A17 | Address Inputs | AMS = A17; A17–A11 select sector during Sector-Erase; A17–A15 select block during Block-Erase |
| DQ0–DQ15 | Data I/O | 16-bit bidirectional bus; outputs tri-stated when CE# or OE# high; latched on write |
| CE# | Chip Enable | Active-low chip select; must be low to enable any operation except standby |
| OE# | Output Enable | Active-low output gate; controls DQ bus drive during Read; high = high-Z |
| WE# | Write Enable | Active-low control for Program/Erase command latching; rising edge initiates internal operation |
| WP# | Write Protect | Active-low top-boot block lock; grounded to protect 3E000H–3FFFFH (8 KWord) from accidental erase/write |
| RST# | Reset | Active-low hardware reset; forces return to Read mode and terminates in-progress operations |
| RY/BY# | Ready/Busy# | Open-drain status indicator; requires 10–100 kΩ pull-up; low = active Program/Erase |
| VDD | Power Supply | 2.7–3.6V supply; powers core and I/O; no separate VPP required (internal generation) |
| VSS | Ground | Two dedicated ground balls (pins A1 and H12) for noise reduction in high-speed reads |
Key Features
| Feature | Design Value |
|---|---|
| Erase-Suspend/Resume | Allows reading from non-suspended sectors or programming other blocks during active erase - critical for real-time firmware update without system freeze |
| Auto Low Power Mode | Reduces active read current from 5 mA to 3 µA after valid access - cuts quiescent power in always-on IoT nodes |
| Security ID Space | Factory-programmed 128-bit ID + 128-word user space - enables secure device authentication and firmware binding |
| Hardware Block Protection | Top 8 KWord (3E000H–3FFFFH) protected by WP# - prevents corruption of boot loader region during field updates |
| Toggle Bit & Data# Polling | DQ6/DQ7 status feedback with no external polling overhead - eliminates need for timer-based wait loops in bare-metal firmware |
Applications
| Industrial PLC Firmware Storage | Medical Device Boot Code Retention |
|---|---|
Use Scenario: Storing and updating ladder logic firmware in programmable logic controllers deployed in factory automation environments with wide temperature ranges. IC Role / Device Role / Timing Role: Nonvolatile x16 parallel flash memory providing boot code and application image storage with hardware top-block protection. Use Value: 100,000-cycle endurance and >100-year data retention ensure firmware integrity across 15+ year PLC service life without replacement. |
Use Scenario: Holding certified boot firmware and calibration data in Class II medical imaging equipment requiring regulatory traceability and tamper resistance. IC Role / Device Role / Timing Role: Secure, JEDEC-compliant flash memory with factory Security ID and user-programmable ID space for device authentication. Use Value: Hardware WP# lock on top boot block prevents unauthorized modification of FDA-approved boot code during maintenance. |
| Automotive Telematics Module | Network Router Configuration Storage |
Use Scenario: Storing OTA-updatable firmware and vehicle-specific configuration profiles in automotive telematics control units (TCUs) operating at -40°C to +105°C. IC Role / Device Role / Timing Role: High-reliability SuperFlash® memory with 70 ns read access supporting fast boot from cold start. Use Value: Fixed 7 µs word-program time enables sub-second firmware patching without disrupting CAN bus communication. |
Use Scenario: Maintaining persistent routing tables, VLAN settings, and security certificates in enterprise-grade network switches with zero-downtime failover requirements. IC Role / Device Role / Timing Role: Parallel-interface flash with RY/BY# and Toggle Bit status signaling for deterministic firmware update coordination. Use Value: Sector-erase capability (18 ms typical) allows atomic rewrites of configuration sectors without erasing full image or halting packet forwarding. |
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-B3KE | Same die, 48-lead TSOP (12 mm × 20 mm) package - larger footprint, through-hole compatible | Preferred for legacy PCBs with TSOP sockets or manual rework requirements | Select for cost-sensitive industrial designs where board space permits larger package and thermal performance is less constrained |
| MX29LV400CTTI-70G | 4 Mbit x16, 70 ns, 2.7–3.6V, but uses different command set (no CFI Query) and lacks Erase-Suspend | Requires modified driver software; unsuitable for real-time firmware patching scenarios | Choose only when migrating from existing Macronix-based platforms with no requirement for suspend/resume functionality |
Compared with SST39VF402C-70-4C-MAQE-T, the TSOP variant offers mechanical compatibility with legacy sockets but sacrifices miniaturization, while the MX29LV400CTTI-70G omits critical real-time features like Erase-Suspend and CFI support - making it a functional substitute only in static firmware storage applications.
Availability
SST39VF402C-70-4C-MAQE-T is available at Aetrix Electronics and suitable for industrial PLCs, medical imaging systems, automotive TCUs, and enterprise network switches requiring stable component supply, long-term obsolescence management, and RoHS-compliant WFBGA packaging.
Supply support for SST39VF402C-70-4C-MAQE-T 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 portfolio of serial and parallel flash memory solutions.
The SST39VF402C-70-4C-MAQE-T belongs to the Multi-Purpose Flash Plus (MPF+) family, designed specifically for embedded systems requiring fast, reliable, and secure firmware storage with hardware-level boot block protection and real-time erase suspend capability.
FAQ
What is the exact memory organization and density of SST39VF402C-70-4C-MAQE-T?
The SST39VF402C-70-4C-MAQE-T is organized as 256K × 16, delivering 4 Mbit (512 KB) of storage. Its x16 data bus provides 16-bit parallel access, and the address range spans A0–A17 (256K words). This configuration is explicitly confirmed in DS20005053B Section "Product Description" and Table 2 for top-boot addressing. The SST39VF402C-70-4C-MAQE-T uses this layout to support efficient boot code loading in microcontrollers with 16-bit external memory buses.
Does SST39VF402C-70-4C-MAQE-T support hardware write protection, and how is it implemented?
Yes, SST39VF402C-70-4C-MAQE-T implements hardware top-block protection via the WP# pin. When WP# is driven low, the top 8 KWord block (address range 3E000H–3FFFFH) is locked against Program and Erase operations. This is distinct from SST39VF401C's bottom-boot protection. The feature is documented in Table 4 and Section "Hardware Block Protection" of DS20005053B. SST39VF402C-70-4C-MAQE-T relies on this mechanism to safeguard boot loader code from accidental overwrite during field firmware updates.
What package type and dimensions does SST39VF402C-70-4C-MAQE-T use?
SST39VF402C-70-4C-MAQE-T uses a 48-ball WFBGA package measuring 4 mm × 6 mm with 0.5 mm ball pitch, as shown in Figure 4 and specified in the "Packages Available" section of DS20005053B. The "MAQE" suffix in the part number explicitly denotes this WFBGA variant. This ultra-compact package enables high-density PCB layouts in space-constrained applications such as automotive telematics modules and portable medical devices, where the SST39VF402C-70-4C-MAQE-T replaces larger TSOP alternatives.
How does SST39VF402C-70-4C-MAQE-T indicate completion of Program or Erase operations?
SST39VF402C-70-4C-MAQE-T provides three concurrent status mechanisms: Ready/Busy# (RY/BY#) open-drain output, Toggle Bit (DQ6 toggling during operation, stops when complete), and Data# Polling (DQ7 complement during Program, '0' during Erase). These are validated in Table 3 and Section "Write Operation Status Detection". For the SST39VF402C-70-4C-MAQE-T, RY/BY# requires an external 10–100 kΩ pull-up resistor, and DQ6/DQ7 status is sampled after the rising edge of the fourth (Program) or sixth (Erase) WE# pulse - enabling deterministic firmware control without polling delays.
Is SST39VF402C-70-4C-MAQE-T compatible with JEDEC-standard x16 flash command sets?
Yes, SST39VF402C-70-4C-MAQE-T fully complies with JEDEC standard pinouts and command sets for x16 parallel flash, including Software Data Protection (SDP) unlock sequences, Sector/Block/Chip-Erase commands, and CFI Query mode entry (555H/98H). This compliance is stated in the "Features" and "Product Description" sections of DS20005053B. As a result, the SST39VF402C-70-4C-MAQE-T integrates seamlessly into existing JEDEC-compliant memory controllers without custom driver development.
SST39VF402C-70-4C-MAQE-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- SST39 MPF™
- Package/Case:
- 48-WFBGA
- Packaging:
- Tape & Reel (TR)
- 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)
SST39VF402C-70-4C-MAQE-T FAQ
1.How can I place an order for SST39VF402C-70-4C-MAQE-T through Aetrix?
Please submit a Request for Quotation (RFQ) for SST39VF402C-70-4C-MAQE-T 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-70-4C-MAQE-T reliable?
The price and inventory of SST39VF402C-70-4C-MAQE-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SST39VF402C-70-4C-MAQE-T is usually 5 days.
3.What payment methods are accepted for SST39VF402C-70-4C-MAQE-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST39VF402C-70-4C-MAQE-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST39VF402C-70-4C-MAQE-T?
SST39VF402C-70-4C-MAQE-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST39VF402C-70-4C-MAQE-T 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-70-4C-MAQE-T?
For technical support, including SST39VF402C-70-4C-MAQE-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST39VF402C-70-4C-MAQE-T requirements.
6.How does Aetrix verify that SST39VF402C-70-4C-MAQE-T is sourced from the original manufacturer or authorized distributors?
All SST39VF402C-70-4C-MAQE-T 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-70-4C-MAQE-T meets industry standards.
7.What is the process for return or replacement of SST39VF402C-70-4C-MAQE-T?
All SST39VF402C-70-4C-MAQE-T units undergo pre-shipment inspection (PSI). If there is an issue with SST39VF402C-70-4C-MAQE-T, 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-70-4C-MAQE-T part is unused and in its original packaging.
Return procedure for SST39VF402C-70-4C-MAQE-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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