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Microchip Technology SST39VF400A-70-4I-MAQE
- Part No.:
- SST39VF400A-70-4I-MAQE
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-WFBGA
- Datasheet:
-
SST39VF400A-70-4I-MAQE.pdf
- Description:
- IC FLASH 4MBIT PARALLEL 48WFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:740
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Product details
Overview
SST39VF400A-70-4I-MAQE 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, 14 µs word-program time, and JEDEC-standard x16 asynchronous interface. It serves as nonvolatile program/data storage in embedded controllers requiring sector/block erase, data retention >100 years, and industrial temperature support (–40°C to +85°C).
For engineers reviewing the SST39VF400A-70-4I-MAQE datasheet, SST39VF400A-70-4I-MAQE pinout, SST39VF400A-70-4I-MAQE application, or SST39VF400A-70-4I-MAQE equivalent, key selection criteria include voltage range compatibility (2.7–3.6 V), TSOP-48 package footprint, 70 ns read timing, software data protection command sequence, and CFI query support for system-level identification.
Technical Context
The SST39VF400A-70-4I-MAQE implements a split-gate SuperFlash cell architecture with thick-oxide tunneling injector, enabling fixed 14 µs word-program and 18 ms sector/block-erase times independent of cycle count. Its control logic accepts standard JEDEC command sequences via CE#, OE#, and WE# with latched address/data buses.
It supports three erase granularities-2 KWord sectors (128 total), 32 KWord blocks (8 total), and full-chip erase-with end-of-write detection via DQ7 Data# Polling and DQ6 Toggle Bit. The device integrates hardware noise/glitch protection, VDD power-up/down detection, and permanent Software Data Protection (SDP) enabled at shipment.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4 Mbit (256K × 16 organization), providing 512 KB of x16-addressable nonvolatile storage |
| Read Access Time | 70 ns maximum - defines minimum bus cycle time for reliable read operations at full speed |
| Supply Voltage Range | 2.7–3.6 V - enables direct interfacing with 3.3 V systems and tolerance to brown-out conditions |
| Word-Program Time | 14 µs typical - enables high-throughput firmware updates without external VPP or timing-critical host intervention |
| Endurance | 100,000 program/erase cycles - supports field firmware upgrades over product lifetime |
| Data Retention | Greater than 100 years - ensures long-term reliability in unpowered storage applications |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade embedded environments including motor control and networking |
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 half of memory space (required for 4 Mbit density) |
| DQ0–DQ15 | Data I/O | x16 bidirectional data bus with internal latching; tri-stated when CE# or OE# is 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 during read cycles only |
| WE# | Write Enable | Active-low write strobe; initiates command loading and internal program/erase timing |
| VDD | Power Supply | 2.7–3.6 V supply; powers core logic and memory array; no external VPP required |
| VSS | Ground | Two dedicated ground pins (pins 23 and 47) reduce noise coupling and improve signal integrity |
| NC | No Connection | Pins 9, 10, 12–15, 18, 19, 21, 22, 24, 25, 27, 28, 30, 31, 33, 34, 36, 37, 39, 40, 42, 43, 45 - electrically isolated, must be left floating |
Key Features
| Feature | Design Value |
|---|---|
| SuperFlash Technology | Split-gate cell with thick-oxide injector delivers stable 14 µs program and 18 ms erase times across full endurance life |
| Uniform Sector/Block Architecture | 128 × 2 KWord sectors and 8 × 32 KWord blocks enable precise, low-overhead firmware partitioning and wear leveling |
| JEDEC-Compliant Command Set | Fully compatible with industry-standard flash command protocols (e.g., 6-byte sector erase, 3-byte program unlock), easing migration from other x16 flash devices |
| CFI Query Support | Enables runtime identification of device geometry, voltage ranges, and timing parameters without hard-coded assumptions |
| Hardware + Software Data Protection | Glitch-resistant WE#/CE# inputs, VDD monitoring, and permanent SDP prevent accidental writes during power transitions or noise events |
Applications
| Industrial PLC Firmware Storage | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Storing firmware and configuration tables in programmable logic controllers deployed in factory automation environments with wide ambient temperature swings. IC Role / Device Role / Timing Role: Nonvolatile code storage with fast 70 ns read access supporting real-time scan-cycle execution and in-field firmware updates via sector-erase. Use Value: 100,000-cycle endurance and >100-year data retention ensure multi-decade deployment without refresh; industrial temp rating (–40°C to +85°C) guarantees operation in unconditioned control cabinets. | Use Scenario: Holding calibration data, diagnostic logs, and boot code in automotive BCMs subject to vibration, thermal cycling, and EMI. IC Role / Device Role / Timing Role: Reliable x16 flash memory with software data protection and toggle-bit status reporting for safe over-the-air (OTA) updates. Use Value: 2.7–3.6 V operation tolerates battery voltage sag during cranking; CFI query allows bootloader to auto-detect geometry before initiating update routines. |
| Medical Infusion Pump Configuration | Networking Equipment Boot Image |
Use Scenario: Storing safety-critical dosage profiles, user preferences, and audit logs in Class II medical devices requiring traceable, tamper-resistant memory. IC Role / Device Role / Timing Role: Secure nonvolatile storage with hardware write-inhibit and SDP-enforced command locking to prevent unauthorized reprogramming. Use Value: Permanent SDP and noise-immune WE# inputs meet IEC 62304 software safety requirements; 14 µs program time minimizes update window during service mode. | Use Scenario: Hosting primary boot loader and fail-safe recovery image in enterprise switches and routers where firmware corruption must be recoverable. IC Role / Device Role / Timing Role: Dual-image flash storage with independent sector erase allowing atomic firmware swaps and rollback capability. Use Value: Uniform 2 KWord sectors enable fine-grained image partitioning; chip-erase time of 70 ms supports rapid factory reflash during production test. |
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-MAQE | Commercial temperature grade (0°C to +70°C); identical electrical specs and pinout | Limited to climate-controlled indoor equipment; not rated for extended industrial thermal stress | Select when cost sensitivity outweighs need for –40°C startup or sustained high-temp operation |
| MX29LV400CTTI-70G | 4 Mbit x16, 70 ns, 3.0–3.6 V; uses different command set and lacks CFI query; requires external VPP for some operations | Requires firmware driver modification; no runtime geometry detection; higher system-level validation effort | Consider only if legacy design already uses MX29LV family and board layout cannot accommodate new command timing |
Compared with SST39VF400A-70-4C-MAQE, the SST39VF400A-70-4I-MAQE adds industrial temperature qualification without trade-offs in speed or endurance; versus MX29LV400CTTI-70G, it offers superior system integration via CFI support, lower voltage flexibility, and elimination of external VPP circuitry.
Availability
SST39VF400A-70-4I-MAQE is available at Aetrix Electronics and suitable for industrial automation, automotive electronics, and medical device applications requiring stable component supply, long-term lifecycle support, and guaranteed RoHS compliance.
Supply support for SST39VF400A-70-4I-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 provider of microcontroller, analog, FPGA, and memory solutions, acquired Silicon Storage Technology (SST) in 2010 to expand its nonvolatile memory portfolio.
The SST39VF400A-70-4I-MAQE belongs to the SST39VFxxxA Multi-Purpose Flash family, designed specifically for embedded systems needing robust, low-voltage, JEDEC-compatible flash storage with simplified programming and industrial reliability.
FAQ
What is the memory organization of the SST39VF400A-70-4I-MAQE?
The SST39VF400A-70-4I-MAQE is organized as 256K × 16, delivering 4 Mbit (512 KB) of x16-addressable nonvolatile memory. This structure supports efficient 16-bit microprocessor and microcontroller bus interfaces without byte-lane multiplexing. Address lines A0–A16 cover the base 256K words, while A17 selects the upper memory half - a requirement confirmed in Table 1 and Figure 2 for the 4 Mbit variant.
Does the SST39VF400A-70-4I-MAQE require an external VPP voltage for programming?
No, the SST39VF400A-70-4I-MAQE does not require external VPP. It generates all necessary high-voltage programming signals internally using its on-chip charge pump, as stated in the "Automatic Write Timing" feature and confirmed in Table 6 (VPP min/max = 0000H). Programming and erasing operate solely from the 2.7–3.6 V VDD supply.
How is write completion detected on the SST39VF400A-70-4I-MAQE?
Write completion on the SST39VF400A-70-4I-MAQE is detected using two software methods: Data# Polling (DQ7) and Toggle Bit (DQ6). After the fourth WE# pulse in program mode or sixth in erase mode, DQ7 returns true data upon completion, while DQ6 stops toggling. Both are valid simultaneously and require no additional hardware - details are specified in Sections 7–8 and Figures 8–9 of DS25001A.
What package type is used for the SST39VF400A-70-4I-MAQE?
The SST39VF400A-70-4I-MAQE uses a 48-lead TSOP (Thin Small Outline Package) with 12 mm × 20 mm body dimensions and standard JEDEC pinout, as shown in Figure 2 and confirmed in the "Packages Available" section. The suffix "MAQE" explicitly denotes this TSOP-48 industrial-grade variant per Microchip's packaging nomenclature.
Is the SST39VF400A-70-4I-MAQE compatible with Common Flash Interface (CFI) hosts?
Yes, the SST39VF400A-70-4I-MAQE fully supports CFI. Writing the three-byte sequence (5555H/AAH → 2AAAH/55H → 5555H/98H) enters CFI Query mode, enabling host software to read device geometry, voltage ranges, and timing parameters from standardized addresses (Table 5–9). This allows plug-and-play integration with CFI-aware bootloaders and flash utilities.
SST39VF400A-70-4I-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:
- 20µs
- 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)
SST39VF400A-70-4I-MAQE FAQ
1.How can I place an order for SST39VF400A-70-4I-MAQE through Aetrix?
Please submit a Request for Quotation (RFQ) for SST39VF400A-70-4I-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 SST39VF400A-70-4I-MAQE reliable?
The price and inventory of SST39VF400A-70-4I-MAQE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SST39VF400A-70-4I-MAQE is usually 5 days.
3.What payment methods are accepted for SST39VF400A-70-4I-MAQE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST39VF400A-70-4I-MAQE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST39VF400A-70-4I-MAQE?
SST39VF400A-70-4I-MAQE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST39VF400A-70-4I-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 SST39VF400A-70-4I-MAQE?
For technical support, including SST39VF400A-70-4I-MAQE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST39VF400A-70-4I-MAQE requirements.
6.How does Aetrix verify that SST39VF400A-70-4I-MAQE is sourced from the original manufacturer or authorized distributors?
All SST39VF400A-70-4I-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 SST39VF400A-70-4I-MAQE meets industry standards.
7.What is the process for return or replacement of SST39VF400A-70-4I-MAQE?
All SST39VF400A-70-4I-MAQE units undergo pre-shipment inspection (PSI). If there is an issue with SST39VF400A-70-4I-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 SST39VF400A-70-4I-MAQE part is unused and in its original packaging.
Return procedure for SST39VF400A-70-4I-MAQE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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