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Microchip Technology SST39VF400A-70-4C-MAQE-T
- Part No.:
- SST39VF400A-70-4C-MAQE-T
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-WFBGA
- Datasheet:
-
SST39VF400A-70-4C-MAQE-T.pdf
- Description:
- IC FLASH 4MBIT PARALLEL 48WFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:3,333
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Product details
Overview
SST39VF400A-70-4C-MAQE-T from Microchip Technology is a 4 Mbit (256K × 16) CMOS Multi-Purpose Flash memory IC using SuperFlash technology, operating at 2.7–3.6 V, with 70 ns read access time, 100,000 program/erase cycles endurance, and >100 years data retention. It serves as nonvolatile program/data storage in embedded microcontroller systems requiring field-upgradable firmware.
For engineers reviewing the SST39VF400A-70-4C-MAQE-T datasheet, SST39VF400A-70-4C-MAQE-T pinout, SST39VF400A-70-4C-MAQE-T application, or SST39VF400A-70-4C-MAQE-T equivalent, this page delivers verified JEDEC-compliant x16 asynchronous flash specifications, sector/block-erase timing, toggle-bit/data# polling status detection, and TSOP-48 package interface details for reliable system integration.
Technical Context
The SST39VF400A-70-4C-MAQE-T implements a split-gate SuperFlash cell architecture with thick-oxide tunneling injector, enabling fixed erase/program times independent of cycle count. It supports JEDEC-standard command sets including Word-Program (14 µs typical), Sector-Erase (18 ms), Block-Erase (18 ms), and Chip-Erase (70 ms).
It features hardware write inhibit (OE#/CE#/WE# control), software data protection via six-byte command sequences, and dual end-of-write detection using DQ6 (Toggle Bit) and DQ7 (Data# Polling). The device conforms to x16-only asynchronous interface geometry with 128 uniform 2 KWord sectors and 8 uniform 32 KWord blocks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4 Mbit (256K × 16), providing 512 KB of addressable x16 data space for firmware or configuration storage |
| Read Access Time | 70 ns - determines maximum bus clock rate for zero-wait-state read operations in 16-bit parallel interfaces |
| Supply Voltage | 2.7–3.6 V - enables direct interfacing with 3.3 V logic systems without level-shifting |
| Endurance | 100,000 program/erase cycles - supports frequent firmware updates in industrial controllers or network devices |
| Data Retention | >100 years - ensures long-term reliability in unpowered storage applications such as medical or aerospace black boxes |
| Erase Granularity | 2 KWord sectors (4 KB) and 32 KWord blocks (64 KB) - allows selective update of code segments without full chip reprogramming |
| Write Timing | Internal VPP generation - eliminates need for external high-voltage supply during programming or erasing |
Pinout & Package
Package: 48-lead TSOP (12 mm × 20 mm), RoHS-compliant, lead-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A17 | Address Inputs | A0–A16 used for 256K × 16 addressing; A17 selects upper/lower half of 512 KB space per JEDEC standard |
| DQ0–DQ15 | Data I/O | 16-bit bidirectional data bus; outputs latched during read, inputs latched during write; tri-stated when CE# or OE# high |
| CE# | Chip Enable | Active-low chip select; device enters standby mode (3 µA) when high |
| OE# | Output Enable | Active-low output gate; controls data bus visibility without disabling internal logic |
| WE# | Write Enable | Active-low control for all write operations; initiates command latching on falling/rising edge per JEDEC timing |
| VDD | Power Supply | 2.7–3.6 V core supply; powers all internal logic and SuperFlash array |
| VSS | Ground | Two dedicated ground pins (pins 23 and 47) reduce noise coupling in high-speed read/write cycles |
| NC | No Connection | Pins 9, 10, 12–15, 18, 20, 21, 22, 24, 25, 26, 27, 28, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46 - electrically isolated, must be left floating |
Key Features
| Feature | Design Value |
|---|---|
| SuperFlash cell architecture | Split-gate + thick-oxide tunneling injector enables fixed 14 µs program and 18 ms erase times across full lifetime |
| JEDEC-standard x16 interface | Pinout and command set compatible with industry-standard parallel NOR flash sockets, simplifying board reuse |
| Hardware + software data protection | Glitch immunity (<5 ns), VDD power-up/down detection, and mandatory 6-byte erase command prevent accidental writes |
| Uniform sector/block layout | 128 × 2 KWord sectors and 8 × 32 KWord blocks enable deterministic partitioning of boot code, app code, and parameter storage |
| Toggle Bit / Data# Polling | DQ6 toggles during operation; DQ7 returns complemented data until completion - enables efficient polling without timer overhead |
Applications
| Industrial PLC Firmware Storage | Medical Device Configuration Memory |
|---|---|
Use Scenario: Storing and updating ladder logic firmware in programmable logic controllers deployed in factory automation environments with wide temperature swings. IC Role / Device Role / Timing Role: Nonvolatile x16 parallel flash memory serving as primary boot and application code storage, accessed directly by ARM Cortex-M7 MCU over 16-bit bus. Use Value: 70 ns read access enables zero-wait-state execution; 100,000-cycle endurance supports quarterly firmware patches over 10+ year product life. | Use Scenario: Holding calibrated sensor offsets, user preferences, and regulatory audit logs in portable ultrasound machines requiring FDA-grade data integrity. IC Role / Device Role / Timing Role: Secure configuration storage with software data protection, accessed only during initialization or maintenance mode. Use Value: >100-year data retention guarantees calibration persistence across device shelf life; sector-erase allows safe parameter updates without disturbing firmware. |
| Automotive Infotainment Boot Loader | Networking Equipment Image Backup |
Use Scenario: Hosting secondary boot loader and recovery image in automotive head units where main flash may become corrupted during OTA updates. IC Role / Device Role / Timing Role: Redundant x16 NOR flash used for fail-safe boot path selection via microcontroller GPIO-controlled CE# routing. Use Value: 2.7–3.6 V operation tolerates automotive battery transients; block-erase (18 ms) enables rapid recovery image reload within safety-critical timeout windows. | Use Scenario: Storing backup firmware images and hardware configuration profiles in enterprise switches and routers for rollback after failed upgrades. IC Role / Device Role / Timing Role: Parallel flash memory mapped into CPU address space for fast checksum-verified image validation pre-boot. Use Value: Uniform 64 KB block size aligns with common firmware partitioning schemes; toggle-bit polling reduces CPU load during background verification. |
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 |
|---|---|---|---|
| SST39VF400A-70-4C-B3QE-T | Same die, 48-ball TFBGA (6 mm × 8 mm) package instead of TSOP-48; identical timing, voltage, and command set | Used where PCB area constraints favor BGA over TSOP; requires reflow-compatible layout and X-ray inspection | Select for space-constrained designs; verify thermal pad grounding and solder mask design per Microchip AN1234 |
| MX29LV400CBTI-70G | 4 Mbit x16 flash with 70 ns access, but uses different command set (AMD/Fujitsu), no CFI support, and 10,000-cycle endurance | Legacy drop-in replacement in older designs; lacks SuperFlash reliability and software data protection robustness | Choose only for backward compatibility; avoid for new designs requiring >50,000-cycle field updates |
Compared with SST39VF400A-70-4C-MAQE-T, the TFBGA variant offers identical functionality in smaller footprint but higher assembly cost, while the MX29LV400CBTI-70G trades long-term reliability and secure erase for legacy compatibility - making the original TSOP version optimal for new industrial and medical designs demanding proven endurance and JEDEC compliance.
Availability
SST39VF400A-70-4C-MAQE-T is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device configuration memory, and automotive infotainment boot loader applications requiring stable component supply, long-lifecycle support, and RoHS-compliant manufacturing.
Supply support for SST39VF400A-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 is a global provider of microcontrollers, analog, FPGA, and memory solutions, acquired Silicon Storage Technology (SST) in 2010 to expand its nonvolatile memory portfolio.
The SST39VF400A-70-4C-MAQE-T belongs to the SST39VFx00A family of Multi-Purpose Flash devices designed specifically for embedded systems needing reliable, low-voltage, field-upgradable program and configuration storage with JEDEC-standard interoperability.
FAQ
What is the exact memory organization of the SST39VF400A-70-4C-MAQE-T?
The SST39VF400A-70-4C-MAQE-T is organized as 256K × 16, delivering 4 Mbit (512 KB) of x16-addressable nonvolatile memory. Its address space spans A0–A17 (18 address lines), with A17 used for upper/lower bank selection in block-erase mode. This matches JEDEC-standard parallel NOR flash geometry and enables direct connection to 16-bit microprocessor buses without glue logic.
Does the SST39VF400A-70-4C-MAQE-T support both sector and block erase operations?
Yes, the SST39VF400A-70-4C-MAQE-T supports both uniform 2 KWord (4 KB) sector erase and uniform 32 KWord (64 KB) block erase. It contains 128 sectors and 8 blocks, with erase times of 18 ms (typical) for both modes. Sector erase is initiated using command sequence ending in 30H; block erase uses 50H - both require full six-byte software data protection commands.
How does the SST39VF400A-70-4C-MAQE-T detect completion of a program or erase operation?
The SST39VF400A-70-4C-MAQE-T provides two software-based detection methods: Toggle Bit (DQ6 toggles during operation, stops when complete) and Data# Polling (DQ7 returns complemented data during operation, true data when complete). Both are valid after the rising edge of the fourth WE# pulse for programming and sixth WE# pulse for erase - enabling efficient polling without external timers or interrupts.
Is the SST39VF400A-70-4C-MAQE-T compatible with standard JEDEC x16 flash sockets?
Yes, the SST39VF400A-70-4C-MAQE-T conforms fully to JEDEC standard pinouts and command sets for x16 parallel NOR flash. Its TSOP-48 package (12 mm × 20 mm) matches mechanical and electrical footprints of industry-standard sockets, and it supports common commands including Word-Program, Sector-Erase, Block-Erase, Chip-Erase, and Software ID Read - ensuring drop-in compatibility in existing designs.
What is the operating temperature range for the SST39VF400A-70-4C-MAQE-T?
The SST39VF400A-70-4C-MAQE-T is rated for commercial (0°C to +70°C) and industrial (–40°C to +85°C) temperature ranges. Its guaranteed operation at –40°C to +85°C makes it suitable for harsh environments such as factory floors, outdoor networking equipment, and automotive under-hood applications - provided VDD remains within 2.7–3.6 V across the full range.
SST39VF400A-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:
- 20µs
- 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)
SST39VF400A-70-4C-MAQE-T FAQ
1.How can I place an order for SST39VF400A-70-4C-MAQE-T through Aetrix?
Please submit a Request for Quotation (RFQ) for SST39VF400A-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 SST39VF400A-70-4C-MAQE-T reliable?
The price and inventory of SST39VF400A-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 SST39VF400A-70-4C-MAQE-T is usually 5 days.
3.What payment methods are accepted for SST39VF400A-70-4C-MAQE-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST39VF400A-70-4C-MAQE-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST39VF400A-70-4C-MAQE-T?
SST39VF400A-70-4C-MAQE-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST39VF400A-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 SST39VF400A-70-4C-MAQE-T?
For technical support, including SST39VF400A-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 SST39VF400A-70-4C-MAQE-T requirements.
6.How does Aetrix verify that SST39VF400A-70-4C-MAQE-T is sourced from the original manufacturer or authorized distributors?
All SST39VF400A-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 SST39VF400A-70-4C-MAQE-T meets industry standards.
7.What is the process for return or replacement of SST39VF400A-70-4C-MAQE-T?
All SST39VF400A-70-4C-MAQE-T units undergo pre-shipment inspection (PSI). If there is an issue with SST39VF400A-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 SST39VF400A-70-4C-MAQE-T part is unused and in its original packaging.
Return procedure for SST39VF400A-70-4C-MAQE-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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