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Microchip Technology SST39VF402C-70-4C-MAQE
- Part No.:
- SST39VF402C-70-4C-MAQE
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-WFBGA
- Datasheet:
-
SST39VF402C-70-4C-MAQE.pdf
- Description:
- IC FLASH 4MBIT PARALLEL 48WFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:4,936
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Product details
Overview
SST39VF402C-70-4C-MAQE from Microchip is a 4 Mbit (256K × 16) Multi-Purpose Flash Plus (MPF+) memory IC designed for embedded program and configuration storage. 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 uniform 2 KWord sector erase with flexible block architecture. It is used in industrial control firmware updates and boot code storage where reliable nonvolatile reprogrammability is required.
For engineers reviewing the SST39VF402C-70-4C-MAQE datasheet, SST39VF402C-70-4C-MAQE pinout, SST39VF402C-70-4C-MAQE application, or SST39VF402C-70-4C-MAQE equivalent, this page provides verified technical context, JEDEC-compliant x16 interface behavior, SuperFlash® endurance and retention specs, TSOP-48 package mapping, and validated alternative flash parts for boot memory replacement.
Technical Context
This device implements a CMOS SuperFlash® split-gate cell architecture with thick-oxide tunneling injector, enabling fixed erase/program times independent of cycle count and eliminating system-level de-rating. It conforms to JEDEC-standard x16 flash pinouts and command sets, supporting standard microprocessor bus interfacing via CE#, OE#, and WE# control signals.
It integrates hardware write protection (WP#) for top-boot block security, RST# for hardware reset to read mode, and RY/BY# open-drain status output. End-of-write detection is supported via DQ7 Data# Polling, DQ6/DQ2 Toggle Bits, and RY/BY# assertion-each with defined timing validity windows relative to WE#/CE# edges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4 Mbit (256K × 16), directly maps to 512 KB address space with x16 data bus width |
| Read Access Time | 70 ns - determines minimum bus cycle time for random read operations in 2.7–3.6 V systems |
| Supply Voltage | 2.7–3.6 V - enables single-supply operation in low-voltage embedded systems without level-shifting |
| Endurance | 100,000 program/erase cycles - guarantees field-reliable firmware update capability over product lifetime |
| Data Retention | >100 years - ensures long-term integrity of boot code and calibration data without refresh |
| Erase Architecture | Uniform 2 KWord sectors + flexible blocks (seven 32 KWord, one 16 KWord, two 4 KWord, one 8 KWord) - enables granular firmware partitioning |
| Top Boot Protection | Hardware WP#-enabled protection of top 8 KWord (3E000H–3FFFFH) - secures boot loader against accidental overwrite |
Pinout & Package
Package: 48-lead TSOP (12 mm × 20 mm), RoHS-compliant, standard JEDEC x16 flash footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A17 | Address Inputs | 18-bit address bus; AMS = A17; sector/block selection uses A11–A15 per JEDEC MPF+ command protocol |
| DQ0–DQ15 | Data I/O | x16 bidirectional data bus; latched internally during write; tri-state when CE# or OE# high |
| CE# | Chip Enable | Active-low chip select; must be low to enable read/write; controls address/data latch timing with WE# |
| OE# | Output Enable | Active-low output gate; determines data bus drive; high impedance when asserted high or CE# high |
| WE# | Write Enable | Active-low write strobe; latches address/data and initiates internal program/erase sequences per command set |
| WP# | Write Protect | Active-low hardware lock for top 8 KWord boot block; floating = internally pulled high = unprotected |
| RST# | Reset | Active-low hardware reset; forces return to read mode and aborts in-progress erase/program |
| RY/BY# | Ready/Busy# | Open-drain status output requiring external 10–100 kΩ pull-up; low = active erase/program, high = ready |
Key Features
| Feature | Design Value |
|---|---|
| SuperFlash® Technology | Split-gate cell with thick-oxide tunneling injector enables fixed 7 µs word-program and 18 ms sector-erase times across full lifecycle |
| Auto Low Power Mode | Reduces active read current from 5 mA to 3 µA after valid read access-no software overhead, no timing penalty on exit |
| Erase-Suspend/Resume | Allows temporary halt of sector/block erase to read other locations or program unprotected sectors-critical for real-time firmware patching |
| Security ID | 128-bit factory-programmed ID + 128-word user-programmable space, locked via dedicated command to prevent tampering |
| CFI Support | JEDEC Common Flash Interface compliant-enables automatic device identification and parameter querying in bootloader code |
Applications
| Industrial PLC Firmware Storage | Medical Device Boot Code |
|---|---|
Use Scenario: Storing and updating ladder logic firmware in programmable logic controllers with field service requirements. IC Role / Device Role / Timing Role: Nonvolatile program memory providing x16 parallel interface to ARM Cortex-M7 MCU with 70 ns read latency. Use Value: Top-boot hardware protection prevents corruption of critical startup routines during remote firmware upgrades over CAN bus. |
Use Scenario: Holding certified boot loader and safety-critical initialization code in FDA-regulated diagnostic imaging equipment. IC Role / Device Role / Timing Role: Secure boot memory with 100-year data retention and 100,000-cycle endurance for regulatory compliance. Use Value: Factory-programmed Security ID enables cryptographic binding of firmware image to hardware, satisfying IEC 62304 traceability requirements. |
| Automotive ECU Configuration | Networking Equipment Parameter Tables |
Use Scenario: Storing vehicle-specific calibration maps and emission control parameters in engine control units. IC Role / Device Role / Timing Role: Configuration memory accessed via MPC57xx QSPI-compatible parallel bus with hardware WP#-locked top sector. Use Value: Uniform 2 KWord sector erase allows safe overwriting of individual map regions without disturbing adjacent calibration data. |
Use Scenario: Hosting dynamic routing tables and protocol stack configuration in enterprise switches and routers. IC Role / Device Role / Timing Role: High-reliability flash memory interfaced to MIPS-based network processor with RY/BY#-driven interrupt-driven write completion. Use Value: Erase-suspend capability permits real-time table updates while maintaining packet forwarding throughput during background erase. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SST39VF401C-70-4C-MAQE | Bottom-boot architecture (protects 00000H–01FFFH); identical voltage, timing, and command set | Used where boot code resides in lowest memory region; incompatible pin-for-pin replacement due to different protected address range | Select only if bottom-boot protection aligns with system memory map and bootloader location. |
| MX29LV400CTTI-70G | 4 Mbit x16 CFI-compliant flash; 70 ns access; 3.0–3.6 V supply; lacks Auto Low Power mode and Erase-Suspend | Requires software-managed power state transitions; no suspend/resume for concurrent read/write; same TSOP-48 footprint | Choose when SuperFlash® advanced features are unnecessary and cost sensitivity outweighs power/performance advantages. |
Compared with SST39VF402C-70-4C-MAQE, SST39VF401C-70-4C-MAQE offers mirrored boot-block protection but shares identical endurance, retention, and interface behavior-while MX29LV400CTTI-70G provides JEDEC compatibility at the expense of SuperFlash®'s fixed-timing and low-power capabilities.
Availability
SST39VF402C-70-4C-MAQE is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device boot code, automotive ECU configuration, and networking equipment parameter tables requiring stable component supply and long-term obsolescence management.
Supply support for SST39VF402C-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 flash memory portfolio.
This device belongs to the Multi-Purpose Flash Plus (MPF+) product line, engineered specifically for embedded systems requiring robust, low-voltage, high-endurance nonvolatile storage with deterministic timing and hardware security features.
FAQ
What is the boot block protection scheme for SST39VF402C-70-4C-MAQE?
The SST39VF402C-70-4C-MAQE implements top-boot hardware block protection, securing the upper 8 KWord (3E000H–3FFFFH) from accidental program or erase when the WP# pin is driven low. This matches the device's designation as "402C", distinguishing it from the bottom-boot SST39VF401C. The protection is physical and does not require software enablement.
Does SST39VF402C-70-4C-MAQE support both sector and block erase modes?
Yes, SST39VF402C-70-4C-MAQE supports uniform 2 KWord sector erase and flexible block erase using seven 32 KWord, one 16 KWord, two 4 KWord, and one 8 KWord blocks. Block erase is initiated via the 30H command with block address on AMS–A15 lines, while sector erase uses 50H with AMS–A11 address lines-both confirmed in Table 7 of the datasheet.
How is end-of-write detection implemented in SST39VF402C-70-4C-MAQE?
SST39VF402C-70-4C-MAQE provides three concurrent end-of-write detection methods: DQ7 Data# Polling (complement-to-data toggle), DQ6/DQ2 Toggle Bits (alternating 1/0 during operation), and RY/BY# open-drain status output. Each method has defined validity windows tied to WE#/CE# edge timing, and all are usable for both program and erase operations.
What package type is used for SST39VF402C-70-4C-MAQE?
SST39VF402C-70-4C-MAQE is packaged in a 48-lead TSOP (12 mm × 20 mm) with standard JEDEC x16 flash pinout, as confirmed in Figure 2 and Table 1 of the datasheet. The "MAQE" suffix explicitly denotes this TSOP-48 variant, distinguishing it from TFBGA or WFBGA versions.
Is SST39VF402C-70-4C-MAQE compatible with JEDEC-standard flash command sets?
Yes, SST39VF402C-70-4C-MAQE fully conforms to JEDEC Standard JESD21-C for flash EEPROM pinouts and command sets. It supports Common Flash Interface (CFI) query mode, Software Product Identification, and all standard commands including Word-Program (A0H), Sector-Erase (50H), Block-Erase (30H), and Chip-Erase (10H) as documented in Table 7.
SST39VF402C-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)
SST39VF402C-70-4C-MAQE FAQ
1.How can I place an order for SST39VF402C-70-4C-MAQE through Aetrix?
Please submit a Request for Quotation (RFQ) for SST39VF402C-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 SST39VF402C-70-4C-MAQE reliable?
The price and inventory of SST39VF402C-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 SST39VF402C-70-4C-MAQE is usually 5 days.
3.What payment methods are accepted for SST39VF402C-70-4C-MAQE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST39VF402C-70-4C-MAQE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST39VF402C-70-4C-MAQE?
SST39VF402C-70-4C-MAQE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST39VF402C-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 SST39VF402C-70-4C-MAQE?
For technical support, including SST39VF402C-70-4C-MAQE 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 requirements.
6.How does Aetrix verify that SST39VF402C-70-4C-MAQE is sourced from the original manufacturer or authorized distributors?
All SST39VF402C-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 SST39VF402C-70-4C-MAQE meets industry standards.
7.What is the process for return or replacement of SST39VF402C-70-4C-MAQE?
All SST39VF402C-70-4C-MAQE units undergo pre-shipment inspection (PSI). If there is an issue with SST39VF402C-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 SST39VF402C-70-4C-MAQE part is unused and in its original packaging.
Return procedure for SST39VF402C-70-4C-MAQE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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