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Microchip Technology SST39VF402C-70-4I-MAQE-T
- Part No.:
- SST39VF402C-70-4I-MAQE-T
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-WFBGA
- Datasheet:
-
SST39VF402C-70-4I-MAQE-T.pdf
- Description:
- IC FLASH 4MBIT PARALLEL 48WFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:4,044
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Product details
Overview
SST39VF402C-70-4I-MAQE-T 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 communication modules. It operates at 2.7–3.6 V, delivers 70 ns read access time, supports hardware block protection on the top 8 KWord boot sector, and features erase-suspend/resume capability for real-time system responsiveness.
For engineers reviewing the SST39VF402C-70-4I-MAQE-T datasheet, SST39VF402C-70-4I-MAQE-T pinout, SST39VF402C-70-4I-MAQE-T application, or SST39VF402C-70-4I-MAQE-T equivalent, this page provides verified technical context, JEDEC-compliant x16 interface details, boot-block protection mapping, and validated alternatives for firmware upgrade paths in space-constrained designs.
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. Its JEDEC-standard x16 parallel interface uses CE#, OE#, and WE# control signals with latched address/data buses and supports standard microprocessor bus timing.
The SST39VF402C-70-4I-MAQE-T integrates hardware write protection via WP# for top-boot-block (3E000H–3FFFFH), RST# for hardware reset to read mode, and RY/BY# open-drain status output with external pull-up. It also supports CFI query mode, Security ID (128-bit factory + 128-word user), and Auto Low Power mode reducing active read current to 3 µA after valid access.
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 - enables direct connection to 14 MHz microcontrollers without wait states |
| 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 - supports field firmware updates over 10+ years in industrial deployments |
| Data Retention | Greater than 100 years - ensures long-term reliability in unpowered storage applications |
| Block Protection | Top 8 KWord (3E000H–3FFFFH) protected when WP# = low - safeguards bootloader code from accidental overwrite |
| Package | 48-ball WFBGA (4 mm × 6 mm) - ultra-compact footprint for high-density PCB layouts |
Pinout & Package
48-ball WFBGA (4 mm × 6 mm, MAQE package), ball pitch 0.5 mm, bottom-side mounting. Pinout conforms to JEDEC standard x16 flash pin assignments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A17 | Address Inputs | 18-bit address bus supporting full 256K × 16 addressing; AMS = A17 for sector/block selection |
| DQ0–DQ15 | Data I/O | 16-bit bidirectional data bus with internal latching; tri-stated when CE# or OE# high |
| CE# | Chip Enable | Active-low chip select - device enters standby (3 µA) when high |
| OE# | Output Enable | Active-low output gate - controls data bus visibility during read operations |
| WE# | Write Enable | Active-low control for program/erase command latching and execution timing |
| WP# | Write Protect | Active-low hardware lock for top boot block (3E000H–3FFFFH); floating = unprotected |
| RST# | Reset | Active-low hardware reset - forces immediate return to read mode, aborting in-progress operations |
| RY/BY# | Ready/Busy# | Open-drain status output requiring 10–100 kΩ pull-up; low = active program/erase, high = ready |
| VDD | Power Supply | 2.7–3.6 V supply - powers all internal logic and SuperFlash® programming circuitry |
| VSS | Ground | Reference ground for all I/O and core functions |
| NC | No Connection | Unbonded balls (A2, A1, A5, DQ10, DQ9, DQ1, A17, NC, DQ2, NC, DQ3, NC, DQ12, RST#, RY/BY#, NC, DQ13, A9, A10, A8, DQ4, DQ5, DQ14, A11, A13, A12, DQ11, DQ6, DQ15, A14, A15, A16, DQ7) - must remain unconnected |
Key Features
| Feature | Design Value |
|---|---|
| Erase-Suspend/Resume | Allows real-time read access to non-suspended sectors during active erase - critical for interrupt-driven firmware execution |
| Auto Low Power Mode | Reduces active read current from 5 mA to 3 µA after valid access - cuts dynamic power by >99% in burst-read scenarios |
| Security ID | Factory-programmed 128-bit ID + 128-word user space - enables secure device authentication and firmware binding |
| Uniform Sector Architecture | 2 KWord sectors (4 KB) - simplifies firmware partitioning and OTA update management |
| Flexible Block Erase | One 8-, two 4-, one 16-, and seven 32-KWord blocks - optimizes erase granularity for bootloader + application + config storage |
| End-of-Write Detection | Triple-method status: RY/BY#, DQ7 Data# Polling, and DQ6/DQ2 Toggle Bits - eliminates polling overhead and improves system efficiency |
Applications
| Industrial PLC Firmware Storage | Telecom Baseband Configuration |
|---|---|
Use Scenario: Storing and updating ladder logic firmware in programmable logic controllers deployed in factory automation environments. IC Role / Device Role / Timing Role: Nonvolatile program memory with hardware-protected boot sector ensuring bootloader integrity during remote firmware upgrades. Use Value: Top-boot-block protection prevents corruption of startup code; 70 ns access enables deterministic scan-cycle timing in real-time control loops. |
Use Scenario: Holding RF calibration tables and protocol stack configuration parameters in 4G/LTE baseband processors. IC Role / Device Role / Timing Role: Configuration memory accessed during power-on initialization and runtime parameter adjustment via host processor. Use Value: Erase-suspend allows concurrent read of active calibration data while background reprogramming of updated tables - no service interruption. |
| Medical Device Bootloader | Automotive Infotainment OS Image |
Use Scenario: Securing certified bootloader code in Class II medical instruments requiring FDA-compliant firmware traceability. IC Role / Device Role / Timing Role: Trusted boot memory with factory Security ID and locked user ID space for cryptographic key binding. Use Value: 128-bit factory ID + programmable user ID enables device-specific firmware signing; 100-year retention meets regulatory archival requirements. |
Use Scenario: Storing primary OS image and recovery partition in automotive head units with over-the-air (OTA) update capability. IC Role / Device Role / Timing Role: Dual-purpose flash supporting both fast read performance and robust in-system reprogramming. Use Value: 7 µs word-program and 18 ms sector-erase enable rapid delta updates; top-boot-block isolation protects recovery image from main OS corruption. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar parallel NOR flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SST39VF402C-70-4C-MAQE-T | Same die, commercial temperature range (0°C to +70°C) vs. industrial (-40°C to +85°C) | Not rated for extended thermal cycling in industrial enclosures or automotive under-hood environments | Select only for cost-sensitive consumer-grade applications with controlled ambient conditions. |
| MX29LV400CTTI-70G | 4 Mbit x16, 70 ns access, but uses different command set and lacks erase-suspend/resume and Security ID | Requires firmware driver rewrite; no hardware boot-block protection - relies solely on software locking | Choose only if legacy design compatibility with Macronix command set is mandatory and security features are not required. |
Compared with SST39VF402C-70-4I-MAQE-T, the -4C variant sacrifices industrial temperature resilience for lower cost, while MX29LV400CTTI-70G omits critical real-time and security capabilities - making SST39VF402C-70-4I-MAQE-T uniquely suited for safety-critical, field-upgradable embedded systems.
Availability
SST39VF402C-70-4I-MAQE-T is available at Aetrix Electronics and suitable for industrial PLCs, telecom baseband modules, medical diagnostic equipment, and automotive infotainment systems requiring stable component supply across extended product lifecycles.
Supply support for SST39VF402C-70-4I-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 reliable, long-lifecycle flash memory solutions.
The SST39VF402C-70-4I-MAQE-T belongs to the Multi-Purpose Flash Plus (MPF+) family, engineered specifically for embedded systems needing robust, low-power, field-upgradable nonvolatile storage with hardware-level security and real-time operational flexibility.
FAQ
What is the operating temperature range for SST39VF402C-70-4I-MAQE-T?
The SST39VF402C-70-4I-MAQE-T is rated for industrial temperature operation from –40°C to +85°C. This range ensures reliable functionality in harsh environments such as factory floors, outdoor telecom cabinets, and vehicle-mounted electronics where thermal stability is critical. The 'I' suffix in the part number explicitly denotes industrial grade, distinguishing it from commercial variants like SST39VF402C-70-4C-MAQE-T.
Does SST39VF402C-70-4I-MAQE-T support hardware write protection for the boot sector?
Yes, SST39VF402C-70-4I-MAQE-T provides hardware block protection for the top 8 KWord boot sector (3E000H–3FFFFH) via the WP# pin. When WP# is driven low, program and erase operations to that region are disabled. If WP# is left floating, an internal pull-up holds it high, leaving the boot sector unprotected - allowing full in-system reprogramming when needed.
How does the erase-suspend feature work in SST39VF402C-70-4I-MAQE-T?
The SST39VF402C-70-4I-MAQE-T supports erase-suspend via the B0H command, which pauses an ongoing sector or block erase. During suspend, the device enters read mode within ~20 µs, allowing access to any non-suspended memory location. DQ2 toggling indicates read attempts within suspended regions. Resume is triggered with the 30H command. This enables real-time responsiveness in interrupt-driven systems without erasure interruption.
What package type is used for SST39VF402C-70-4I-MAQE-T?
SST39VF402C-70-4I-MAQE-T uses a 48-ball WFBGA (Wafer-Level Fine-Pitch Ball Grid Array) package with dimensions 4 mm × 6 mm and 0.5 mm ball pitch. This ultra-compact, bottom-terminal package minimizes PCB area and improves thermal performance compared to TSOP alternatives, making it ideal for space-constrained embedded modules.
Can SST39VF402C-70-4I-MAQE-T be used as a direct replacement for SST39VF401C-70-4I-MAQE-T?
No - SST39VF402C-70-4I-MAQE-T and SST39VF401C-70-4I-MAQE-T differ in boot-block location: SST39VF402C protects the top 8 KWord (3E000H–3FFFFH), while SST39VF401C protects the bottom 8 KWord (00000H–01FFFH). Their address mappings and protection behavior are incompatible; swapping them risks bootloader corruption unless firmware and hardware protection logic are redesigned.
SST39VF402C-70-4I-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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-WFBGA (6x4)
SST39VF402C-70-4I-MAQE-T FAQ
1.How can I place an order for SST39VF402C-70-4I-MAQE-T through Aetrix?
Please submit a Request for Quotation (RFQ) for SST39VF402C-70-4I-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-70-4I-MAQE-T reliable?
The price and inventory of SST39VF402C-70-4I-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-70-4I-MAQE-T is usually 5 days.
3.What payment methods are accepted for SST39VF402C-70-4I-MAQE-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST39VF402C-70-4I-MAQE-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST39VF402C-70-4I-MAQE-T?
SST39VF402C-70-4I-MAQE-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST39VF402C-70-4I-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-70-4I-MAQE-T?
For technical support, including SST39VF402C-70-4I-MAQE-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST39VF402C-70-4I-MAQE-T requirements.
6.How does Aetrix verify that SST39VF402C-70-4I-MAQE-T is sourced from the original manufacturer or authorized distributors?
All SST39VF402C-70-4I-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-70-4I-MAQE-T meets industry standards.
7.What is the process for return or replacement of SST39VF402C-70-4I-MAQE-T?
All SST39VF402C-70-4I-MAQE-T units undergo pre-shipment inspection (PSI). If there is an issue with SST39VF402C-70-4I-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-70-4I-MAQE-T part is unused and in its original packaging.
Return procedure for SST39VF402C-70-4I-MAQE-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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