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Microchip Technology SST39WF400B-70-4C-MAQE
- Part No.:
- SST39WF400B-70-4C-MAQE
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-WFBGA
- Datasheet:
-
SST39WF400B-70-4C-MAQE.pdf
- Description:
- IC FLASH 4MBIT PARALLEL 48WFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:3,338
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Product details
Overview
SST39WF400B-70-4C-MAQE from Microchip Technology is a 4 Mbit (256K × 16) Multi-Purpose Flash memory IC using SuperFlash technology, designed for embedded program/data storage in low-voltage systems. It operates from 1.65–1.95 V, delivers 70 ns read access time, supports sector/block/whole-chip erase, and features JEDEC-standard x16 asynchronous interface with hardware/software data protection.
For engineers reviewing the SST39WF400B-70-4C-MAQE datasheet, SST39WF400B-70-4C-MAQE pinout, SST39WF400B-70-4C-MAQE application, or SST39WF400B-70-4C-MAQE equivalent, key selection criteria include single-supply 1.65–1.95 V operation, 100,000-cycle endurance, 100-year data retention, 48-ball WFBGA/XFLGA/TFBGA packaging, and CFI-compliant identification for firmware update and configuration storage in resource-constrained industrial and consumer platforms.
Technical Context
The SST39WF400B-70-4C-MAQE implements a split-gate SuperFlash cell architecture with thick-oxide tunneling injector, enabling fixed erase/program times independent of cycle count. Its command-set-driven operation uses six-byte sequences for sector/block/chip erase and three-byte sequences for word-program, all compliant with JEDEC standard pinouts and timing.
It integrates dual end-of-write detection via Data# Polling (DQ7) and Toggle Bit (DQ6), supports both WE#- and CE#-controlled timing modes, and embeds Common Flash Interface (CFI) tables for automatic device characterization-enabling plug-and-play compatibility with standard flash controllers and boot loaders.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 256K × 16 (4 Mbit total); enables 16-bit parallel data bus interfacing without external multiplexing |
| Read Access Time | 70 ns; meets real-time boot and code-fetch latency requirements in microcontroller-based systems |
| Supply Voltage | 1.65–1.95 V; compatible with modern low-power SoCs and battery-backed applications |
| Endurance | 100,000 program/erase cycles (typical); supports frequent firmware updates over product lifetime |
| Data Retention | >100 years at 25°C; ensures long-term reliability in unpowered storage scenarios |
| Erase Granularity | Uniform 2 KWord sectors and 32 KWord blocks; allows fine-grained field updates without full chip reprogramming |
| Write Timing | 28 µs word-program (typical); reduces system wait states during configuration writes |
Pinout & Package
Package: 48-ball WFBGA (4 mm × 6 mm), RoHS-compliant, suitable for high-density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A17 | Address Inputs | A0–A16 select 256K words; A17 (AMS) used for sector/block address decoding during erase commands |
| DQ0–DQ15 | Data I/O | 16-bit bidirectional bus; tri-stated when CE# or OE# is high; latched internally during write operations |
| CE# | Chip Enable | Active-low device selection; must be low for read/write/erase; controls power state transition to active mode |
| OE# | Output Enable | Active-low output gating; determines data bus visibility during read; high-Z when deasserted |
| WE# | Write Enable | Active-low control for programming and erase initiation; latches command/address/data on rising/falling edges per JEDEC timing |
| VDD | Power Supply | 1.65–1.95 V supply; powers core logic and SuperFlash array; internal VPP generation eliminates external high-voltage requirement |
| VSS | Ground | Reference for all I/O and core circuitry; two dedicated balls ensure low-impedance return path |
| NC | No Connection | Unbonded pins (e.g., A11, A13 in WFBGA/XFLGA); must remain floating per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| SuperFlash Technology | Split-gate cell with thick-oxide tunneling injector enables fixed 36 ms erase time regardless of accumulated cycles-eliminates software de-rating |
| Software Data Protection (SDP) | JEDEC-compliant three-byte (program) and six-byte (erase) command sequences prevent accidental writes during power transitions |
| CFI Support | Embedded CFI tables (SST and general modes) allow automatic driver initialization and vendor-agnostic flash management |
| Low Standby Current | 5 µA typical (≤40 µA max); extends battery life in always-on IoT edge nodes and portable devices |
| Hardware Write Inhibit | Glitch protection (<5 ns pulses rejected), VDD lockout (<1.0 V), and OE#/CE#/WE# state monitoring prevent spurious writes at power-up/down |
Applications
| Industrial HMI Firmware Storage | Medical Device Configuration Memory |
|---|---|
Use Scenario: Storing and updating GUI firmware and calibration tables in panel-mounted HMIs operating in factory environments with wide temperature swings. IC Role / Device Role / Timing Role: Nonvolatile program memory mapped to microcontroller address space; accessed via x16 asynchronous bus during boot and runtime updates. Use Value: 100,000-cycle endurance and >100-year retention ensure reliable operation across 15+ year equipment lifecycles without field replacement. | Use Scenario: Holding patient-specific settings, sensor calibration coefficients, and regulatory-compliant audit logs in portable diagnostic instruments. IC Role / Device Role / Timing Role: Secure configuration storage with hardware/software write protection; accessed only during initialization or authorized service mode. Use Value: Single 1.65–1.95 V supply simplifies power design; CFI support enables standardized bootloader integration across multiple device families. |
| Automotive Infotainment Boot Code | Smart Meter Firmware Update Storage |
Use Scenario: Hosting boot loader and primary firmware image in automotive infotainment head units requiring AEC-Q100-compliant components. IC Role / Device Role / Timing Role: Primary boot memory accessed by MCU on power-up; supports in-field OTA updates via sector-erase granularity. Use Value: 70 ns read access meets tight boot timing budgets; uniform 2 KWord sectors enable atomic firmware patching without full reflash. | Use Scenario: Storing metering firmware, tariff tables, and communication stack binaries in utility smart meters deployed in remote locations. IC Role / Device Role / Timing Role: Field-upgradable program memory interfaced to 16-bit microcontroller; erased and rewritten during scheduled maintenance windows. Use Value: Low 5 µA standby current minimizes battery drain during mains failure; block-erase capability accelerates multi-kilobyte firmware upgrades. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SST39VF400A-70-4C-EKE | 3.3 V operation (2.7–3.6 V), 70 ns access, same 256K×16 organization but different SuperFlash generation; no CFI support | Requires separate 3.3 V rail; lacks CFI auto-detection-needs custom driver integration | Select only if legacy 3.3 V system compatibility is mandatory and CFI is unused |
| MX29LV400CTTI-70G | 3.3 V supply, 70 ns access, 256K×16, supports CFI but uses older floating-gate technology; 100K cycles, 20-year retention | Higher voltage margin but lower endurance and retention; slower erase due to variable timing | Consider for cost-sensitive designs where 20-year retention suffices and 3.3 V is available |
Compared with SST39VF400A-70-4C-EKE and MX29LV400CTTI-70G, the SST39WF400B-70-4C-MAQE uniquely combines 1.65–1.95 V operation, CFI compliance, fixed-timing SuperFlash, and 100-year retention-making it optimal for next-generation ultra-low-power, long-lifecycle embedded systems where voltage scaling and firmware agility are critical.
Availability
SST39WF400B-70-4C-MAQE is available at Aetrix Electronics and suitable for industrial HMI firmware storage, medical device configuration memory, and automotive infotainment boot code requiring stable component supply across extended product lifecycles.
Supply support for SST39WF400B-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 is a global semiconductor company specializing in microcontrollers, analog, FPGA, and memory solutions, with leadership in embedded control and secure connectivity.
The SST39WF400B-70-4C-MAQE belongs to Microchip's SuperFlash MPF (Multi-Purpose Flash) product line, engineered for low-voltage, high-reliability embedded storage in space- and power-constrained applications such as portable medical devices, smart meters, and industrial controllers.
FAQ
What is the operating voltage range for the SST39WF400B-70-4C-MAQE?
The SST39WF400B-70-4C-MAQE operates from 1.65 V to 1.95 V for both read and write functions. This single-supply range eliminates the need for external voltage translators or charge pumps. The device incorporates internal VPP generation, so no auxiliary high-voltage supply is required for programming or erasing. Operation outside this range may cause functional failure or reduced reliability.
Does the SST39WF400B-70-4C-MAQE support JEDEC-standard command sets?
Yes, the SST39WF400B-70-4C-MAQE fully conforms to JEDEC standard pinouts and command sets for x16 flash memories. It supports industry-standard software data protection sequences-including three-byte word-program and six-byte sector/block/chip-erase commands-as well as Product ID and CFI Query modes. This ensures interoperability with generic flash drivers and boot ROMs without vendor-specific firmware modifications.
How does the SST39WF400B-70-4C-MAQE detect completion of a program or erase operation?
The SST39WF400B-70-4C-MAQE provides two hardware-supported status detection methods: Data# Polling (DQ7) and Toggle Bit (DQ6). After initiating a write operation, DQ7 returns complemented data until completion, then true data; DQ6 toggles between 0 and 1 during the operation and stabilizes upon finish. Both methods are valid after the fourth (program) or sixth (erase) WE#/CE# pulse, enabling efficient polling without timer dependencies.
What package types are offered for the SST39WF400B-70-4C-MAQE?
The SST39WF400B-70-4C-MAQE is available in three 48-ball BGA variants: TFBGA (6 mm × 8 mm), WFBGA (4 mm × 6 mm), and XFLGA (4 mm × 6 mm). All packages are RoHS-compliant and optimized for surface-mount assembly. The WFBGA and XFLGA share identical pinouts and footprint, while the TFBGA uses a different ball map-designers must verify layout compatibility using Figures 2 and 3 from DS25034A.
What is the endurance and data retention specification of the SST39WF400B-70-4C-MAQE?
The SST39WF400B-70-4C-MAQE guarantees a minimum endurance of 10,000 cycles per JEDEC A117, with typical performance rated at 100,000 cycles. Data retention is specified at greater than 100 years under normal operating conditions (25°C, VDD = 1.8 V). These values are achieved through SuperFlash's split-gate cell architecture and are validated across commercial (0°C to +70°C) and industrial (−40°C to +85°C) temperature ranges.
SST39WF400B-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:
- 40µs
- Access Time:
- 70 ns
- Voltage - Supply:
- 1.65V ~ 1.95V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-WFBGA (6x4)
SST39WF400B-70-4C-MAQE FAQ
1.How can I place an order for SST39WF400B-70-4C-MAQE through Aetrix?
Please submit a Request for Quotation (RFQ) for SST39WF400B-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 SST39WF400B-70-4C-MAQE reliable?
The price and inventory of SST39WF400B-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 SST39WF400B-70-4C-MAQE is usually 5 days.
3.What payment methods are accepted for SST39WF400B-70-4C-MAQE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST39WF400B-70-4C-MAQE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST39WF400B-70-4C-MAQE?
SST39WF400B-70-4C-MAQE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST39WF400B-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 SST39WF400B-70-4C-MAQE?
For technical support, including SST39WF400B-70-4C-MAQE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST39WF400B-70-4C-MAQE requirements.
6.How does Aetrix verify that SST39WF400B-70-4C-MAQE is sourced from the original manufacturer or authorized distributors?
All SST39WF400B-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 SST39WF400B-70-4C-MAQE meets industry standards.
7.What is the process for return or replacement of SST39WF400B-70-4C-MAQE?
All SST39WF400B-70-4C-MAQE units undergo pre-shipment inspection (PSI). If there is an issue with SST39WF400B-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 SST39WF400B-70-4C-MAQE part is unused and in its original packaging.
Return procedure for SST39WF400B-70-4C-MAQE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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