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Microchip Technology SST39WF400B-70-4C-MAQE-T
- Part No.:
- SST39WF400B-70-4C-MAQE-T
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-WFBGA
- Datasheet:
-
SST39WF400B-70-4C-MAQE-T.pdf
- Description:
- IC FLASH 4MBIT PARALLEL 48WFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,343
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Product details
Overview
SST39WF400B-70-4C-MAQE-T 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/Chip-Erase, and features JEDEC-standard x16 pinout and command set. It is used in firmware update storage for industrial controllers and boot code retention in portable medical devices.
For engineers reviewing the SST39WF400B-70-4C-MAQE-T datasheet, SST39WF400B-70-4C-MAQE-T pinout, SST39WF400B-70-4C-MAQE-T application, or SST39WF400B-70-4C-MAQE-T equivalent, key selection considerations include its 1.65–1.95 V single-supply write capability, 100,000-cycle endurance, 48-ball WFBGA/XFLGA/TFBGA packaging, and CFI-compliant identification for system-level flash management.
Technical Context
The SST39WF400B-70-4C-MAQE-T implements a split-gate SuperFlash cell with thick-oxide tunneling injector, enabling fixed erase/program times independent of cycle count. Its architecture supports uniform 2 KWord sectors (128 total) and 32 KWord blocks (8 total), with all erase operations initiated via six-byte JEDEC-compliant command sequences.
It uses dual status detection-Data# Polling (DQ7) and Toggle Bit (DQ6)-for asynchronous end-of-write verification, and integrates hardware protections including noise/glitch immunity (<5 ns pulse rejection), VDD power-up/down detection (<1.0 V inhibit), and software data protection (SDP) with mandatory three-byte (Program) or six-byte (Erase) unlock sequences.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 256K × 16 (4 Mbit total); enables 16-bit parallel data interface for microcontroller bus alignment |
| Read Access Time | 70 ns; meets timing requirements for 14 MHz synchronous bus operation without wait states |
| Write Voltage Range | 1.65–1.95 V; allows direct connection to core logic rails without external VPP generation |
| Endurance | 100,000 program/erase cycles (typical); supports field firmware updates over 10+ years in deployed equipment |
| Data Retention | >100 years at 25°C; ensures long-term reliability for unpowered archival storage |
| Erase Granularity | Sector (2 KWord), Block (32 KWord), Chip; enables selective firmware patching without full reflash |
| Standby Current | 5 µA (typical); reduces quiescent power in battery-backed or energy-harvested systems |
Pinout & Package
Package: 48-ball WFBGA (4 mm × 6 mm), RoHS-compliant, suitable for high-density PCB layouts with fine-pitch routing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A17 | Address Inputs | A0–A16 select 256K words; A17 (AMS) is most-significant address used for sector/block selection during erase |
| DQ0–DQ15 | Data I/O | 16-bit bidirectional bus; latched internally during write; tri-stated when CE# or OE# is high |
| CE# | Chip Enable | Active-low device selection; must be low for read/write; high-Z output when asserted high |
| OE# | Output Enable | Active-low output gating; controls data bus drive; independent of CE# for partial read control |
| WE# | Write Enable | Active-low write control; latches address/data on falling/rising edges per JEDEC timing rules |
| VDD | Power Supply | 1.65–1.95 V supply; powers all internal logic and SuperFlash array; no separate VPP required |
| VSS | Ground | Two dedicated ground balls (pins E1, L6) reduce noise coupling and improve signal integrity |
| NC | No Connection | Unbonded pins (e.g., C3, D2, F1); must be left floating or tied to ground per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| SuperFlash Technology | Split-gate cell with thick-oxide injector enables fixed 36 ms erase/28 µs program times across full lifecycle |
| JEDEC x16 Standard Compliance | Pinout and command set match industry-standard NOR flash interfaces, enabling drop-in replacement in existing designs |
| CFI Query Support | Embedded Common Flash Interface data (at 10H–34H) allows automatic driver configuration and geometry detection |
| Hardware + Software Data Protection | Glitch filtering, VDD monitoring, and mandatory SDP unlock sequences prevent accidental writes during power transitions |
| Uniform Erase Architecture | 128 sectors (2 KWord each) and 8 blocks (32 KWord each) simplify firmware partitioning and wear leveling |
Applications
| Industrial PLC Firmware Storage | Medical Device Boot Code Retention |
|---|---|
Use Scenario: Storing and updating ladder logic firmware in programmable logic controllers operating in harsh factory environments. IC Role / Device Role / Timing Role: Nonvolatile program memory providing fast random-access reads and robust in-system reprogramming capability. Use Value: 100,000-cycle endurance and >100-year data retention ensure reliable operation over extended maintenance intervals without backup power. |
Use Scenario: Holding certified boot loader and safety-critical initialization code in portable diagnostic instruments with strict regulatory traceability. IC Role / Device Role / Timing Role: Secure, tamper-resistant boot memory supporting authenticated firmware validation before execution. Use Value: Software Data Protection (SDP) and CFI query enable verified, version-controlled updates compliant with IEC 62304 requirements. |
| Automotive Infotainment Configuration | Network Edge Router Parameter Storage |
Use Scenario: Storing user preferences, display calibration data, and regional language packs in automotive head units with wide temperature range requirements. IC Role / Device Role / Timing Role: Low-voltage configuration memory interfaced directly to 1.8 V SoC buses without level-shifting. Use Value: 1.65–1.95 V operation and -40°C to +85°C industrial grade rating support seamless integration into automotive power domains. |
Use Scenario: Maintaining persistent routing tables, security certificates, and QoS policies in carrier-grade edge routers requiring zero-downtime updates. IC Role / Device Role / Timing Role: Dual-bank-capable flash memory enabling atomic firmware swaps via sector-erase isolation. Use Value: Sector-erase granularity (2 KWord) allows concurrent read/write operations-active bank serves traffic while standby bank is updated. |
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-T | 3.3 V operation (2.7–3.6 V), 70 ns access, same density and package; lacks 1.8 V compatibility | Requires external voltage translation in 1.8 V systems; suitable only where 3.3 V rail is available | Select only if legacy 3.3 V design compatibility is required and voltage scaling is not needed |
| MX29LV400CTTI-70G | 3.3 V operation, 70 ns access, 48-pin TSOP, JEDEC-compatible but no CFI support; higher standby current (1 µA vs. 5 µA typical) | TSOP package increases board area; absence of CFI requires hardcoded driver support | Choose for cost-sensitive, space-tolerant designs where CFI auto-detection is unnecessary |
Compared with SST39VF400A-70-4C-EKE-T and MX29LV400CTTI-70G, the SST39WF400B-70-4C-MAQE-T uniquely supports 1.65–1.95 V single-supply operation and integrated CFI, reducing BOM count and enabling plug-and-play flash driver integration in modern ultra-low-power embedded platforms.
Availability
SST39WF400B-70-4C-MAQE-T is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device boot code retention, and automotive infotainment configuration requiring stable component supply across multi-year production cycles.
Supply support for SST39WF400B-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 semiconductor company specializing in microcontrollers, analog devices, and memory solutions, with leadership in embedded control and secure connectivity.
The SST39WF400B product line delivers low-voltage, high-reliability NOR flash memory optimized for firmware storage and code execution in space-constrained, energy-sensitive applications such as portable medical electronics and industrial edge nodes.
FAQ
What is the operating voltage range for the SST39WF400B-70-4C-MAQE-T?
The SST39WF400B-70-4C-MAQE-T operates from 1.65 V to 1.95 V for both read and write functions. This single-supply range eliminates the need for external VPP generation and aligns directly with 1.8 V logic rails. The device is specified across commercial (0°C to +70°C) and industrial (-40°C to +85°C) temperature ranges under this voltage window. Absolute maximum ratings allow transient stress up to VDD+0.5 V on any pin.
Does the SST39WF400B-70-4C-MAQE-T support JEDEC-standard commands and pinout?
Yes, the SST39WF400B-70-4C-MAQE-T conforms fully to JEDEC standard pin assignments and command sets for x16 flash memories. It supports standard Read, Word-Program, Sector-Erase, Block-Erase, and Chip-Erase operations using documented six-byte unlock sequences. Pin functions-including CE#, OE#, WE#, A0–A17, and DQ0–DQ15-are electrically and logically identical to JEDEC-compliant NOR flash devices.
How is write completion detected on the SST39WF400B-70-4C-MAQE-T?
The SST39WF400B-70-4C-MAQE-T provides two hardware-supported methods: Data# Polling (DQ7) and Toggle Bit (DQ6). During Program, DQ7 returns complemented data until completion, then true data. During Erase, DQ7 transitions from 0 to 1. DQ6 toggles between 0 and 1 during active operations and stabilizes upon completion. Both methods are valid after the fourth (Program) or sixth (Erase) WE#/CE# pulse edge.
What package type is used for the SST39WF400B-70-4C-MAQE-T?
The SST39WF400B-70-4C-MAQE-T is packaged in a 48-ball WFBGA (4 mm × 6 mm), also referred to as Micro-Package. This RoHS-compliant ball grid array offers fine-pitch interconnects ideal for high-density PCB layouts. Pin assignments match those shown in Figure 2 of the DS25034A datasheet, with dedicated VSS balls at E1 and L6 for optimal grounding.
What is the endurance and data retention specification for the SST39WF400B-70-4C-MAQE-T?
The SST39WF400B-70-4C-MAQE-T 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 at 25°C per JEDEC A103. These values are achieved through SuperFlash split-gate cell architecture, which maintains consistent erase/program characteristics across the full lifecycle without degradation.
SST39WF400B-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:
- 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-T FAQ
1.How can I place an order for SST39WF400B-70-4C-MAQE-T through Aetrix?
Please submit a Request for Quotation (RFQ) for SST39WF400B-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 SST39WF400B-70-4C-MAQE-T reliable?
The price and inventory of SST39WF400B-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 SST39WF400B-70-4C-MAQE-T is usually 5 days.
3.What payment methods are accepted for SST39WF400B-70-4C-MAQE-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST39WF400B-70-4C-MAQE-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST39WF400B-70-4C-MAQE-T?
SST39WF400B-70-4C-MAQE-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST39WF400B-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 SST39WF400B-70-4C-MAQE-T?
For technical support, including SST39WF400B-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 SST39WF400B-70-4C-MAQE-T requirements.
6.How does Aetrix verify that SST39WF400B-70-4C-MAQE-T is sourced from the original manufacturer or authorized distributors?
All SST39WF400B-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 SST39WF400B-70-4C-MAQE-T meets industry standards.
7.What is the process for return or replacement of SST39WF400B-70-4C-MAQE-T?
All SST39WF400B-70-4C-MAQE-T units undergo pre-shipment inspection (PSI). If there is an issue with SST39WF400B-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 SST39WF400B-70-4C-MAQE-T part is unused and in its original packaging.
Return procedure for SST39WF400B-70-4C-MAQE-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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