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Microchip Technology SST38VF6401B-70-5I-B3KE
- Part No.:
- SST38VF6401B-70-5I-B3KE
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-TFBGA
- Datasheet:
-
SST38VF6401B-70-5I-B3KE.pdf
- Description:
- IC FLASH 64MBIT PARALLEL 48TFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:3,458
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Product details
Overview
SST38VF6401B-70-5I-B3KE from Microchip Technology is a 64 Mbit (4M × 16) Advanced Multi-Purpose Flash Plus memory IC designed for embedded program/data storage in industrial and communications systems. It operates from a single 2.7–3.6 V supply, delivers 70 ns read access time, supports 100,000 erase/program cycles, and retains data for >100 years. Its boot-block protection, hardware reset (RST#), and 128-bit unique ID enable secure firmware updates in networked edge devices.
For engineers reviewing the SST38VF6401B-70-5I-B3KE datasheet, SST38VF6401B-70-5I-B3KE pinout, SST38VF6401B-70-5I-B3KE application, or SST38VF6401B-70-5I-B3KE equivalent, this page provides verified technical context, JEDEC-compliant x16 interface behavior, TSOP/TBGA package mapping, real-world protection schemes (WP#, VPB/NVPB), and validated alternatives for legacy flash replacement in space-constrained designs.
Technical Context
The SST38VF6401B-70-5I-B3KE implements SST's SuperFlash technology with split-gate cells and thick-oxide tunneling injectors, enabling fixed erase/program times independent of cycle count. It conforms to JEDEC standard x16 flash pinouts and command sets, and is CFI-compliant for host compatibility.
It supports three primary operational modes: standard word-read (70 ns), accelerated page-read (25 ns per word, 8-word buffer), and dual-write methods-single-word programming (7 µs typical) and write-buffer programming (1.75 µs/word, 16-word buffer). End-of-operation detection uses DQ7 (Data# Polling), DQ6/DQ2 (Toggle Bits), and RY/BY# output.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 64 Mbit (4M × 16 organization), enabling 8 MB of code/data storage in compact footprint |
| Read Access Time | 70 ns - determines minimum bus cycle timing for synchronous microprocessor interfaces |
| Page Read Speed | 25 ns per word (8-word page) - reduces burst read latency in boot loader and firmware execution |
| Erase Endurance | 100,000 cycles minimum - supports field firmware updates over full product lifecycle |
| Data Retention | Greater than 100 years - ensures long-term reliability without refresh in unpowered storage |
| Supply Voltage | 2.7–3.6 V - compatible with 3.3 V logic rails and brown-out tolerant in industrial power environments |
| Write Buffer Size | 16-word buffer - enables high-throughput firmware patching with reduced host CPU overhead |
Pinout & Package
Package: 48-lead TSOP (Thin Small Outline Package) - surface-mount, lead-free, RoHS-compliant, suitable for automated PCB assembly and thermal cycling in industrial enclosures.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A21 | Address Inputs | 22-bit address bus supporting full 4M-word addressing; A21–A15 select block during erase |
| DQ0–DQ15 | Data I/O | 16-bit bidirectional data bus with latched inputs and tri-state outputs controlled by OE#/CE# |
| CE# | Chip Enable | Active-low chip select; device enters standby (<5 µA) when high |
| OE# | Output Enable | Active-low output gate; controls data bus drive without affecting internal state |
| WE# | Write Enable | Active-low control for all write operations (program/erase); latches address/data on edges |
| WP# | Write Protect | Hardware boot-block lock; grounded to protect top/bottom 32 KWord boot sector |
| RST# | Reset Input | Active-low hardware reset; returns device to read mode and clears internal command state |
| RY/BY# | Ready/Busy Output | Open-drain status signal indicating active program/erase; used for interrupt-driven host coordination |
| VDD | Power Supply | 2.7–3.6 V core and I/O supply; decoupling required per JEDEC layout guidelines |
| VSS | Ground | Reference return for all signals; requires low-impedance PCB plane connection |
Key Features
| Feature | Design Value |
|---|---|
| Erase-Suspend/Resume | Allows real-time read/program of non-erasing blocks during background erase - critical for fail-safe OTA updates |
| Auto Low Power Mode | Reduces active read current from 25 mA to 5 µA after valid access - cuts idle power in battery-backed systems |
| 128-bit Unique ID | Factory-programmed serial number enabling device authentication and secure key binding in trusted boot flows |
| Security-ID OTP Area | 248-word one-time-programmable region for storing cryptographic keys or calibration data - irreversible and tamper-resistant |
| Flexible Block Protection | Combines hardware WP#, volatile/non-volatile block locking (VPB/NVPB), and software password - meets IEC 62443 zone-level security |
Applications
| Industrial PLC Firmware Storage | Telecom Baseband Configuration |
|---|---|
Use Scenario: Storing firmware images and configuration tables in programmable logic controllers deployed in factory automation environments with wide temperature ranges and EMI exposure. IC Role / Device Role / Timing Role: Nonvolatile program memory providing fast boot execution via Page Read (25 ns) and secure update capability using Erase-Suspend during runtime. Use Value: 100,000-cycle endurance and >100-year retention ensure zero field failures over 15+ year equipment lifespans without maintenance. |
Use Scenario: Holding baseband processor configuration parameters and calibration data in 4G/LTE small cell radios requiring rapid reconfiguration under RF interference. IC Role / Device Role / Timing Role: x16 parallel interface flash acting as configuration ROM with hardware reset (RST#) support for deterministic recovery after brownout events. Use Value: WP#-enabled boot block protection prevents accidental corruption of critical startup code during remote firmware upgrades. |
| Medical Imaging Boot Loader | Automotive ADAS Sensor Calibration |
Use Scenario: Hosting certified boot loader and diagnostic firmware in portable ultrasound and MRI subsystems where regulatory traceability and data integrity are mandatory. IC Role / Device Role / Timing Role: Secure storage element leveraging 128-bit Unique ID and Security-ID OTP for cryptographic binding of firmware signatures and audit logs. Use Value: CFI compliance and JEDEC pinout ensure drop-in compatibility with existing medical-grade memory controllers and validation toolchains. |
Use Scenario: Storing sensor-specific calibration coefficients and compensation tables for radar and camera modules in autonomous driving ECUs operating at -40°C to +125°C. IC Role / Device Role / Timing Role: High-reliability flash memory with uniform 32 KWord block architecture enabling deterministic erase timing for safety-critical recalibration routines. Use Value: Fixed erase time (18 ms typical) eliminates timing variance across lifetime - essential for ISO 26262 ASIL-B functional safety compliance. |
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 | Same density, pinout, and command set; differs in internal architecture (SST39 series uses different erase algorithm) | Lacks Erase-Suspend capability and has no RST# pin - unsuitable for real-time update scenarios | Select only if Erase-Suspend and hardware reset are not required; verify timing margins with host controller |
| MX29LV640EBTI-70G | 64 Mbit x16, 70 ns access, but uses different command protocol (AMD/Fujitsu) and lacks 128-bit UID or Security-ID OTP | No built-in boot block protection hierarchy; relies on external logic for WP#-like functionality | Use when migrating from legacy AMD-compatible systems; requires firmware adaptation for protection and status monitoring |
Compared with SST38VF6401B-70-5I-B3KE, SST39VF6401B-70-5I-B3KE omits critical real-time features like Erase-Suspend and RST#, while MX29LV640EBTI-70G requires command-set rework and lacks hardware security primitives - making SST38VF6401B-70-5I-B3KE the only option meeting full industrial firmware update and safety requirements out-of-box.
Availability
SST38VF6401B-70-5I-B3KE is available at Aetrix Electronics and suitable for industrial PLC firmware storage, telecom baseband configuration, medical imaging boot loaders, and automotive ADAS sensor calibration requiring stable component supply across extended product lifecycles.
Supply support for SST38VF6401B-70-5I-B3KE 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 delivering microcontrollers, analog, FPGA, and memory solutions with focus on reliability, longevity, and embedded system integration.
The SST38VF6401B-70-5I-B3KE belongs to Microchip's Advanced Multi-Purpose Flash Plus family, engineered specifically for robust, secure, and high-speed parallel NOR flash replacement in industrial, medical, and communications infrastructure where firmware integrity and update flexibility are mission-critical.
FAQ
What is the difference between SST38VF6401B-70-5I-B3KE and SST38VF6402B?
The SST38VF6401B-70-5I-B3KE features top-boot block architecture (B0 protected), whereas SST38VF6402B uses bottom-boot (B127 protected). Both share identical timing, voltage, endurance, and command sets. The SST38VF6401B-70-5I-B3KE is optimized for systems where primary boot code resides at lowest address, and its WP# pin protects that region. This distinction affects memory map initialization but not electrical or mechanical compatibility.
Does SST38VF6401B-70-5I-B3KE support both TSOP and TFBGA packages?
Yes - the SST38VF6401B-70-5I-B3KE is qualified in both 48-lead TSOP and 48-ball TFBGA packages. The B3KE suffix denotes the TSOP variant; TFBGA versions use different ordering codes (e.g., B3KE replaced with B3KE-T). Pin functions and electrical characteristics are identical across packages, though thermal and board-level routing requirements differ per JEDEC MO-141 and MS-026 standards.
How does the Write-Buffer Programming feature improve throughput in SST38VF6401B-70-5I-B3KE?
The SST38VF6401B-70-5I-B3KE's 16-word Write Buffer reduces effective programming time to 1.75 µs per word versus 7 µs for single-word writes. By loading up to 16 words before committing to flash, it minimizes host wait states and increases sustained write bandwidth - especially valuable during firmware patching or field calibration uploads where sequential writes dominate.
Can SST38VF6401B-70-5I-B3KE be used in automotive applications?
The SST38VF6401B-70-5I-B3KE is rated for industrial temperature range (–40°C to +85°C) and qualified to AEC-Q100 stress test standards per Microchip documentation. Its 100,000-cycle endurance, >100-year retention, and Erase-Suspend capability meet functional safety requirements for non-safety-critical ADAS subsystems (e.g., sensor calibration storage), though full ASIL-D systems require additional system-level validation.
What happens if WP# is left floating on SST38VF6401B-70-5I-B3KE?
Leaving WP# floating on SST38VF6401B-70-5I-B3KE risks unintended boot block erasure or programming due to noise coupling. The datasheet specifies WP# must be statically held high (unprotected) or low (protected) during operation. For reliable boot integrity, tie WP# to VDD through a 10 kΩ pull-up resistor unless active protection is required - ensuring deterministic behavior across voltage ramps and ESD events.
SST38VF6401B-70-5I-B3KE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- SST38
- Package/Case:
- 48-TFBGA
- Packaging:
- Tray
- 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 FAQ
1.How can I place an order for SST38VF6401B-70-5I-B3KE through Aetrix?
Please submit a Request for Quotation (RFQ) for SST38VF6401B-70-5I-B3KE 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 reliable?
The price and inventory of SST38VF6401B-70-5I-B3KE 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 is usually 5 days.
3.What payment methods are accepted for SST38VF6401B-70-5I-B3KE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST38VF6401B-70-5I-B3KE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST38VF6401B-70-5I-B3KE?
SST38VF6401B-70-5I-B3KE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST38VF6401B-70-5I-B3KE 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?
For technical support, including SST38VF6401B-70-5I-B3KE 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 requirements.
6.How does Aetrix verify that SST38VF6401B-70-5I-B3KE is sourced from the original manufacturer or authorized distributors?
All SST38VF6401B-70-5I-B3KE 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 meets industry standards.
7.What is the process for return or replacement of SST38VF6401B-70-5I-B3KE?
All SST38VF6401B-70-5I-B3KE units undergo pre-shipment inspection (PSI). If there is an issue with SST38VF6401B-70-5I-B3KE, 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 part is unused and in its original packaging.
Return procedure for SST38VF6401B-70-5I-B3KE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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