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Microchip Technology SST38VF6401B-70-5I-B3KE-T
- Part No.:
- SST38VF6401B-70-5I-B3KE-T
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-TFBGA
- Datasheet:
-
SST38VF6401B-70-5I-B3KE-T.pdf
- Description:
- IC FLASH 64MBIT PARALLEL 48TFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:2,160
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Product details
Overview
SST38VF6401B-70-5I-B3KE-T from Microchip Technology is a 64 Mbit (4M × 16) Advanced Multi-Purpose Flash Plus memory IC designed for embedded code storage and firmware update applications. It operates from a single 2.7–3.6 V supply, delivers 70 ns read access time, supports 100,000 program/erase cycles, and retains data for >100 years. Its boot-block architecture with hardware WP# protection makes it suitable for secure bootloader storage in industrial controllers.
For engineers reviewing the SST38VF6401B-70-5I-B3KE-T datasheet, SST38VF6401B-70-5I-B3KE-T pinout, SST38VF6401B-70-5I-B3KE-T application, or SST38VF6401B-70-5I-B3KE-T equivalent, key selection criteria include uniform 32 KWord block erase capability, 7 µs word-program timing, RY/BY# status signaling, and JEDEC-compliant x16 parallel interface compatibility with legacy microprocessor buses.
Technical Context
The SST38VF6401B-70-5I-B3KE-T implements SST's SuperFlash technology with split-gate cells and thick-oxide tunneling injectors, enabling fixed erase/program times independent of wear. It uses standard microprocessor write sequences to execute commands-including Word-Program, Page Read (25 ns), Block-Erase (18 ms), and Chip-Erase (40 ms)-with no external VPP required due to internal charge pump generation.
Its dual-status detection-Data# Polling (DQ7), Toggle Bits (DQ6/DQ2), and RY/BY# output-enables robust host-side operation monitoring. The device supports Auto Low Power mode (5 µA standby), 128-bit Unique ID, and Security-ID OTP space (248 words), with hardware boot block protection activated via WP# pin grounding.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 64 Mbit (4M × 16 organization), providing 8 MB of nonvolatile storage for firmware images or configuration tables |
| Read Access Time | 70 ns max - enables direct execution from flash (XIP) on 14 MHz bus systems without wait states |
| Word-Program Time | 7 µs typical - reduces field firmware update latency versus conventional NOR flash |
| Block-Erase Time | 18 ms typical per 32 KWord block - supports rapid partial reprogramming in OTA updates |
| Endurance | 100,000 program/erase cycles - validated for industrial control log storage with daily writes |
| Data Retention | >100 years at 25°C - ensures long-term reliability in unattended infrastructure equipment |
| Supply Voltage | 2.7–3.6 V - compatible with modern low-voltage 3.3 V I/O domains and battery-backed systems |
| JEDEC Compliance | Standard x16 pinout and command set - guarantees drop-in replacement for legacy parallel NOR flash in existing PCB layouts |
Pinout & Package
Package: 48-lead TSOP (Thin Small Outline Package), RoHS-compliant, lead-free, surface-mountable with 0.5 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A21 | Address Inputs | 22-bit address bus supporting full 4M-word addressing; A21–A15 select erase blocks |
| DQ0–DQ15 | Data I/O | 16-bit bidirectional data bus with latched inputs and tri-state outputs controlled by CE#/OE# |
| CE# | Chip Enable | Active-low chip select; device enters standby (5 µA) when high |
| OE# | Output Enable | Active-low output gate; controls data bus tristate independently of CE# |
| WE# | Write Enable | Active-low control for latching addresses/data during command sequences and programming |
| WP# | Write Protect | Hardware boot block lock: grounded = protects top/bottom 32 KWord boot sector from accidental erase/write |
| RY/BY# | Ready/Busy | Open-drain status output: low = active program/erase; used for hardware polling instead of software loops |
| RST# | Reset | Active-low hardware reset that forces device into Read mode, clearing abort states (e.g., DQ1) |
Key Features
| Feature | Design Value |
|---|---|
| Page Read (8-word buffer) | 25 ns page access time enables 40 MB/s sustained read throughput for fast boot code loading |
| Erase-Suspend/Resume | Allows real-time interrupt servicing during block erase - critical for deterministic response in motor control firmware |
| Write-Buffer Programming | 16-word buffer reduces effective programming time to 1.75 µs/word, accelerating firmware patch deployment |
| Security-ID OTP Space | 248-word one-time-programmable area for storing cryptographic keys or device-specific calibration data |
| Uniform Boot Block Protection | Hardware-enforced lock on B0 (top boot) or B127 (bottom boot) - prevents corruption of bootloader during field updates |
Applications
| Industrial PLC Firmware Storage | Medical Device Configuration Memory |
|---|---|
Use Scenario: Storing ladder logic programs and I/O mapping tables in programmable logic controllers requiring field-upgradable firmware with guaranteed integrity. IC Role / Device Role / Timing Role: Nonvolatile parallel NOR flash serving as XIP-capable code storage with hardware write protection for bootloader partition. Use Value: 70 ns read access enables zero-wait-state execution; 100K endurance supports daily firmware validation cycles over 27-year product lifecycle. | Use Scenario: Holding FDA-mandated calibration coefficients, device serial numbers, and audit logs in diagnostic imaging systems with strict data retention requirements. IC Role / Device Role / Timing Role: Secure configuration memory with 128-bit Unique ID and OTP Security-ID space for cryptographic binding of calibration data. Use Value: >100-year data retention meets medical device shelf-life mandates; WP#-enabled boot lock prevents unauthorized firmware modification during service. |
| Automotive Infotainment Boot ROM | Networking Equipment Image Storage |
Use Scenario: Hosting primary boot code and recovery image in automotive head units where AEC-Q100 qualification and functional safety are required. IC Role / Device Role / Timing Role: JEDEC-standard x16 flash providing fail-safe boot path with RY/BY# hardware status signaling for ASIL-B diagnostics. Use Value: Uniform 32 KWord block erase allows atomic firmware rollback; Auto Low Power mode (5 µA) minimizes quiescent current in vehicle sleep states. | Use Scenario: Storing multiple firmware images (primary, backup, recovery) and FPGA bitstreams in enterprise switches and routers requiring hot-swappable updates. IC Role / Device Role / Timing Role: High-reliability parallel flash with Write-Buffer Programming enabling sub-second image swaps without system interruption. Use Value: 1.75 µs/word buffer programming cuts 16 KB firmware update time by 75% vs. standard word-program; CFI compliance simplifies BIOS/UEFI integration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar parallel NOR flash applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SST39VF6401B-70-5I-B3KE-T | Same density, timing, and package; differs in CFI query structure and minor command set variations per DS25003 | Identical boot-block layout and protection scheme; validated for same industrial controller designs | Select when CFI descriptor table alignment with legacy BIOS is required |
| MX29LV640ETTI-70G | 64 Mbit x16, 70 ns access, but lacks RY/BY# pin and Erase-Suspend; uses different command set (Spansion) | No hardware-ready signaling - requires software polling only; no suspend capability for real-time systems | Choose for cost-sensitive consumer applications where deterministic interrupt latency is not required |
Compared with SST38VF6401B-70-5I-B3KE-T, the SST39VF6401B variant offers identical timing and pinout with enhanced CFI compatibility, while MX29LV640ETTI-70G trades advanced features like RY/BY# and Erase-Suspend for lower unit cost in non-critical applications.
Availability
SST38VF6401B-70-5I-B3KE-T is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device configuration memory, and automotive infotainment boot ROM requiring stable component supply across multi-year production cycles.
Supply support for SST38VF6401B-70-5I-B3KE-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 components, and memory solutions, acquired Silicon Storage Technology (SST) in 2010 to expand its nonvolatile memory portfolio.
The SST38VF6401B-70-5I-B3KE-T belongs to the Advanced Multi-Purpose Flash Plus (MPF+) family, engineered specifically for high-reliability embedded systems needing fast, secure, and energy-efficient parallel NOR flash with hardware-based data protection.
FAQ
What is the maximum operating temperature range for the SST38VF6401B-70-5I-B3KE-T?
The SST38VF6401B-70-5I-B3KE-T is rated for industrial temperature operation from –40°C to +85°C, as indicated by the "I" suffix in the part number. This range supports deployment in factory automation controllers, outdoor networking gear, and transportation electronics where ambient thermal stress is significant. The device maintains full 70 ns read access time and 100,000-cycle endurance across this span, with derating applied only for extended high-temperature data retention validation.
Does the SST38VF6401B-70-5I-B3KE-T support both top-boot and bottom-boot configurations?
Yes, the SST38VF6401B-70-5I-B3KE-T implements top-boot architecture, with the boot block located at address 0x0000000 (B0). This is confirmed in Table 2 of the datasheet, which shows VPB/NVPB and WP# enablement for B0 in SST38VF6401B. The pin-compatible SST38VF6402B variant provides bottom-boot (B127), but SST38VF6401B-70-5I-B3KE-T is strictly top-boot configured and cannot be reconfigured via software or hardware strapping.
How does the Write-Buffer Programming feature improve firmware update speed in the SST38VF6401B-70-5I-B3KE-T?
The SST38VF6401B-70-5I-B3KE-T's Write-Buffer Programming reduces effective word-program time to 1.75 µs per word when loading up to 16 words into the internal buffer before committing to flash. This cuts total programming time for a 16-word block by ~75% versus sequential 7 µs word-program operations. In practice, this accelerates field firmware patches - for example, a 2 KB update completes ~30% faster than with standard programming, minimizing system downtime during maintenance windows.
Can the SST38VF6401B-70-5I-B3KE-T be used in place of older SST39VF6401B devices without board changes?
The SST38VF6401B-70-5I-B3KE-T shares identical 48-lead TSOP packaging, pinout, voltage range, and JEDEC x16 interface with SST39VF6401B variants, enabling direct PCB-level replacement. However, differences exist in CFI query responses and minor command timing - verified functional substitution requires validation of the host bootloader's command parser. Microchip confirms pin-to-pin compatibility for read, program, and erase operations in industrial control reference designs.
What failure modes does the RY/BY# pin indicate for the SST38VF6401B-70-5I-B3KE-T?
The RY/BY# pin on the SST38VF6401B-70-5I-B3KE-T signals active program or erase operations (low = busy), but does not encode specific error types. If a protected block is targeted, the operation aborts silently - DQ7/DQ6 status bits then reflect failure after completion. RY/BY# remains asserted during abort recovery; full error diagnosis requires reading Data# Polling (DQ7) or Toggle Bits (DQ6/DQ2) post-abort. Hardware reset (RST#) clears all abort states including DQ1.
SST38VF6401B-70-5I-B3KE-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- SST38
- Package/Case:
- 48-TFBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH
- Memory Size:
- 64Mbit
- Memory Organization:
- 4M 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TFBGA (6x8)
SST38VF6401B-70-5I-B3KE-T FAQ
1.How can I place an order for SST38VF6401B-70-5I-B3KE-T through Aetrix?
Please submit a Request for Quotation (RFQ) for SST38VF6401B-70-5I-B3KE-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 SST38VF6401B-70-5I-B3KE-T reliable?
The price and inventory of SST38VF6401B-70-5I-B3KE-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SST38VF6401B-70-5I-B3KE-T is usually 5 days.
3.What payment methods are accepted for SST38VF6401B-70-5I-B3KE-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST38VF6401B-70-5I-B3KE-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST38VF6401B-70-5I-B3KE-T?
SST38VF6401B-70-5I-B3KE-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST38VF6401B-70-5I-B3KE-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 SST38VF6401B-70-5I-B3KE-T?
For technical support, including SST38VF6401B-70-5I-B3KE-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST38VF6401B-70-5I-B3KE-T requirements.
6.How does Aetrix verify that SST38VF6401B-70-5I-B3KE-T is sourced from the original manufacturer or authorized distributors?
All SST38VF6401B-70-5I-B3KE-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 SST38VF6401B-70-5I-B3KE-T meets industry standards.
7.What is the process for return or replacement of SST38VF6401B-70-5I-B3KE-T?
All SST38VF6401B-70-5I-B3KE-T units undergo pre-shipment inspection (PSI). If there is an issue with SST38VF6401B-70-5I-B3KE-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 SST38VF6401B-70-5I-B3KE-T part is unused and in its original packaging.
Return procedure for SST38VF6401B-70-5I-B3KE-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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