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Home > Products > Integrated Circuits (ICs) > Memory > Memory

Microchip Technology SST38VF6401-90-5I-B3KE

Name: SST38VF6401-90-5I-B3KE
Brand: Microchip Technology
SKU: SST38VF6401-90-5I-B3KE
Price: 2.40 USD
Availability: InStock
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Part No.:: SST38VF6401-90-5I-B3KE

Manufacturer:: Microchip Technology

Category:: Memory

Package:: 48-TFBGA

Datasheet:: SST38VF6401-90-5I-B3KE.pdf

Description:: IC FLASH 64MBIT PARALLEL 48TFBGA

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Product details

Overview

SST38VF6401-90-5I-B3KE from Microchip Technology is a 64 Mbit (4M × 16) CMOS Advanced Multi-Purpose Flash Plus memory IC with 90 ns read access time, single 2.7–3.6 V supply operation, and hardware boot block protection. It delivers 100,000 program/erase cycles, >100 years data retention, and supports Page Read (25 ns), Write-Buffer Programming (1.75 µs/word), and Erase-Suspend/Resume - deployed in industrial embedded controllers for firmware storage and field-upgradable configuration.

For engineers reviewing the SST38VF6401-90-5I-B3KE datasheet, SST38VF6401-90-5I-B3KE pinout, SST38VF6401-90-5I-B3KE application, or SST38VF6401-90-5I-B3KE equivalent, key selection criteria include x16 parallel interface timing compliance, TSOP-48 package compatibility, boot-block protection granularity, SuperFlash endurance/reliability metrics, and JEDEC-standard command set support for legacy 16-bit microcontroller bus integration.

Technical Context

The SST38VF6401-90-5I-B3KE implements a split-gate SuperFlash cell architecture with thick-oxide tunneling injector, enabling fixed erase/program times independent of cycle count - unlike conventional flash technologies where timing degrades with wear. Its internal VPP generation eliminates external high-voltage circuitry.

It supports three distinct erase modes (Sector: 4 KWord, Block: 32 KWord, Chip-wide) and features dual status detection (DQ6 toggle bit + DQ7 Data# Polling) plus RY/BY# output for real-time operation monitoring. The device uses JEDEC-standard x16 pinout and CFI-compliant command sets, ensuring interoperability with existing 16-bit memory controllers.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory Density	64 Mbit (4M × 16 organization) - supports 16-bit wide data bus interfaces without multiplexing or glue logic.
Read Access Time	90 ns - meets timing requirements for 11 MHz synchronous bus operation with standard setup/hold margins.
Page Read Time	25 ns per word (4-word page) - enables burst reads at effective 40 MHz rate for sequential firmware execution.
Write-Buffer Size	16-word buffer - reduces average programming time to 1.75 µs/word, cutting full-page write latency by >85% vs. single-word mode.
Endurance	100,000 program/erase cycles - validated for frequent field updates in industrial HMI and gateway firmware applications.
Data Retention	>100 years - ensures long-term reliability in unpowered storage for medical and infrastructure equipment.
Supply Voltage	2.7–3.6 V - compatible with modern low-voltage 3.3 V systems and tolerant of brown-out conditions down to 2.7 V.
Operating Temp	–40°C to +85°C - qualified for extended temperature industrial environments per IEC 60721-3-3 Class 3K4.

Pinout & Package

Package: 48-lead TSOP (Thin Small Outline Package), standard JEDEC MO-142AC footprint, 12 mm × 20 mm body, 0.5 mm lead pitch.

Pin/Terminal	Circuit Role	Design Meaning
A0–A21	Address Inputs	22-bit address bus supporting full 4M-word addressing; A21–A12 select sector during Sector-Erase.
DQ0–DQ15	Data I/O	16-bit bidirectional data bus with internal latching; tri-stated when CE# or OE# is high.
CE#	Chip Enable	Active-low chip select - enables device only when low; high state places device in standby (3 µA).
OE#	Output Enable	Active-low output gate - controls data bus drive; used with CE# for read timing control.
WE#	Write Enable	Active-low write strobe - latches address/data on falling/rising edges per JEDEC timing protocol.
WP#	Write Protect	Hardware boot block lock - grounded to protect top/bottom 8 KWord boot sectors from accidental erase/program.
RST#	Reset Input	Active-low asynchronous reset - forces device into Read mode; required for power-on initialization.
RY/BY#	Ready/Busy Output	Open-drain status flag - low during active Program/Erase; used for hardware flow control without polling.
VDD	Power Supply	2.7–3.6 V core and I/O supply - no separate VCCIO required; internally regulated for stable operation.
VSS	Ground	Common reference for all signals - two dedicated pins ensure low-impedance return path for high-speed switching.
NC	No Connection	Unbonded pad - must remain floating; no routing or termination required on PCB.

Key Features

Feature	Design Value
Erase-Suspend/Resume	Allows real-time read/program of non-erasing sectors during background erase - critical for fail-safe firmware updates in medical devices.
Auto Low Power Mode	Reduces active read current from 4 mA to 3 µA after valid access - cuts dynamic power by 99.9% during idle polling in battery-backed systems.
128-bit Unique ID	Factory-programmed serial number - enables secure device authentication and firmware binding in IoT edge nodes.
Security-ID OTP Area	256-word user one-time-programmable space - stores cryptographic keys or calibration data with irreversible write protection.
Uniform + Non-uniform Block Protection	Supports both 32 KWord uniform blocks and 8 KWord boot blocks with independent VPB/NVPB control - satisfies bootloader integrity requirements per IEC 62443.
CFI Compliance	Industry-standard Common Flash Interface implementation - enables automatic driver detection and configuration in Linux MTD and U-Boot environments.

Applications

Industrial PLC Firmware Storage	Medical Device Configuration Memory
Use Scenario: Storing and updating ladder logic firmware in programmable logic controllers operating in factory-floor environments with EMI and thermal stress. IC Role / Device Role / Timing Role: Nonvolatile program memory mapped to 16-bit microcontroller address space; provides 90 ns read access for deterministic scan-cycle execution. Use Value: 100,000-cycle endurance and >100-year retention ensure firmware integrity across 15+ year product lifecycles without replacement.	Use Scenario: Holding calibrated sensor offsets, patient safety thresholds, and regulatory audit logs in portable diagnostic equipment requiring traceable data history. IC Role / Device Role / Timing Role: Secure configuration store with OTP Security-ID region; WP#-enabled boot block prevents unauthorized bootloader modification. Use Value: Hardware-based write protection and Erase-Suspend capability allow safe field recalibration without interrupting live patient monitoring.
Telecom Base Station Boot Memory	Automotive ADAS Camera Module Storage
Use Scenario: Hosting boot code and FPGA configuration bitstreams in 5G remote radio units exposed to wide temperature swings and vibration. IC Role / Device Role / Timing Role: Primary boot device interfaced to ARM Cortex-A series SoC via parallel x16 bus; RY/BY# signal synchronizes boot sequence timing. Use Value: TSOP-48 package withstands reflow and mechanical shock; –40°C to +85°C rating guarantees startup reliability in outdoor enclosures.	Use Scenario: Storing camera calibration parameters, lens distortion maps, and firmware patches in automotive surround-view systems subject to AEC-Q100 stress testing. IC Role / Device Role / Timing Role: Field-upgradable parameter memory accessed during camera initialization; Page Read mode accelerates map loading for fast boot. Use Value: SuperFlash technology's fixed erase time eliminates timing drift over lifetime - critical for ASIL-B functional safety compliance.

Industrial PLC Firmware Storage

Medical Device Configuration Memory

Use Scenario: Storing and updating ladder logic firmware in programmable logic controllers operating in factory-floor environments with EMI and thermal stress.

IC Role / Device Role / Timing Role: Nonvolatile program memory mapped to 16-bit microcontroller address space; provides 90 ns read access for deterministic scan-cycle execution.

Use Value: 100,000-cycle endurance and >100-year retention ensure firmware integrity across 15+ year product lifecycles without replacement.

Use Scenario: Holding calibrated sensor offsets, patient safety thresholds, and regulatory audit logs in portable diagnostic equipment requiring traceable data history.

IC Role / Device Role / Timing Role: Secure configuration store with OTP Security-ID region; WP#-enabled boot block prevents unauthorized bootloader modification.

Use Value: Hardware-based write protection and Erase-Suspend capability allow safe field recalibration without interrupting live patient monitoring.

Telecom Base Station Boot Memory

Automotive ADAS Camera Module Storage

Use Scenario: Hosting boot code and FPGA configuration bitstreams in 5G remote radio units exposed to wide temperature swings and vibration.

IC Role / Device Role / Timing Role: Primary boot device interfaced to ARM Cortex-A series SoC via parallel x16 bus; RY/BY# signal synchronizes boot sequence timing.

Use Value: TSOP-48 package withstands reflow and mechanical shock; –40°C to +85°C rating guarantees startup reliability in outdoor enclosures.

Use Scenario: Storing camera calibration parameters, lens distortion maps, and firmware patches in automotive surround-view systems subject to AEC-Q100 stress testing.

IC Role / Device Role / Timing Role: Field-upgradable parameter memory accessed during camera initialization; Page Read mode accelerates map loading for fast boot.

Use Value: SuperFlash technology's fixed erase time eliminates timing drift over lifetime - critical for ASIL-B functional safety compliance.

Equivalent & Alternatives

The following parts are listed as comparable options for similar parallel NOR flash memory applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SST39VF6401B-70-5I-B3KE	70 ns read access (vs. 90 ns); identical density, voltage, and package; same SuperFlash architecture and command set.	Better timing margin for high-speed 16-bit buses; otherwise drop-in compatible in existing layouts.	Select when system timing budget requires sub-90 ns access or when migrating from legacy SST39VF family designs.
MX29LV640ETTI-90G	90 ns read; 3.0 V core (vs. 2.7–3.6 V); different command set (non-CFI); no Erase-Suspend; 100K cycles, but lower data retention (20 years).	Limited to fixed 3.0 V systems; lacks suspend/resume and security features needed for secure OTA updates.	Consider only for cost-sensitive, non-security-critical applications where CFI and advanced protection are unnecessary.

Compared with SST38VF6401-90-5I-B3KE, the SST39VF6401B-70-5I-B3KE offers faster timing with identical reliability and feature set, while MX29LV640ETTI-90G sacrifices security, flexibility, and long-term data integrity for lower unit cost - making the SST38VF6401 optimal for industrial and medical applications demanding robustness and upgradeability.

Availability

SST38VF6401-90-5I-B3KE is available at Aetrix Electronics and suitable for industrial automation, medical diagnostics, and telecom infrastructure applications requiring stable component supply, long lifecycle support, and RoHS-compliant manufacturing.

Supply support for SST38VF6401-90-5I-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 specializing in microcontrollers, analog, FPGA, and memory solutions, with emphasis on industrial, automotive, and aerospace reliability standards.

The SST38VF6401-90-5I-B3KE belongs to Microchip's Advanced Multi-Purpose Flash Plus (MPF+) product line, engineered specifically for high-reliability, field-upgradable embedded systems requiring deterministic timing, hardware security, and extended data retention.

FAQ

What is the maximum operating frequency supported by SST38VF6401-90-5I-B3KE for reliable read operations?

The SST38VF6401-90-5I-B3KE specifies a 90 ns read access time, which supports reliable operation up to approximately 11 MHz on a standard 16-bit parallel bus with typical setup/hold timing margins. This value is measured under worst-case conditions (VDD = 2.7 V, TA = +85°C) and remains stable across its full industrial temperature range. The device does not require clock input - timing is controlled entirely by CE# and OE# assertion windows per JEDEC standard.

Does SST38VF6401-90-5I-B3KE support hardware write protection for the boot sector only, or can individual 32 KWord blocks be locked?

The SST38VF6401-90-5I-B3KE supports both hardware and software write protection. WP# pin protects the top or bottom 8 KWord boot block (B0 or B127). Additionally, each 32 KWord block (B0–B127) can be individually protected using volatile (VPB) or non-volatile (NVPB) block locking via software commands - enabling fine-grained control over firmware, configuration, and data partitions without hardware changes.

How does the Write-Buffer Programming feature improve throughput compared to standard word programming in SST38VF6401-90-5I-B3KE?

Standard word programming in SST38VF6401-90-5I-B3KE takes 7 µs per word, while Write-Buffer Programming achieves 1.75 µs per word average when loading and committing a full 16-word buffer. This 4× speedup eliminates repeated command overhead and reduces total programming time for contiguous data - critical for rapid firmware patching in industrial gateways where downtime must be minimized.

Is SST38VF6401-90-5I-B3KE pin-compatible with earlier SST39VF6401 devices?

Yes - SST38VF6401-90-5I-B3KE maintains identical 48-lead TSOP pinout, JEDEC x16 memory interface, and command set compatibility with SST39VF6401 devices. Differences are internal (SuperFlash cell design, improved endurance, enhanced security features), so existing PCB layouts and firmware drivers require no modification for migration.

What status signals does SST38VF6401-90-5I-B3KE provide to monitor active Program or Erase operations?

The SST38VF6401-90-5I-B3KE provides three concurrent status mechanisms: RY/BY# (active-low open-drain output), DQ6 (toggle bit), and DQ7 (Data# Polling). RY/BY# gives hardware-level readiness indication; DQ6 toggles during operation and stops when complete; DQ7 complements data during writes and stabilizes to true value upon completion - allowing flexible polling or interrupt-driven control in resource-constrained systems.

SST38VF6401-90-5I-B3KE Specifications

Product attributes: Attribute value

Manufacturer:: Microchip Technology

Series:: SST38

Package/Case:: 48-TFBGA

Packaging:: Tray

Product Status:: Active

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:: 90 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)

SST38VF6401-90-5I-B3KE FAQ

1.How can I place an order for SST38VF6401-90-5I-B3KE through Aetrix?

Please submit a Request for Quotation (RFQ) for SST38VF6401-90-5I-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 SST38VF6401-90-5I-B3KE reliable?

The price and inventory of SST38VF6401-90-5I-B3KE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SST38VF6401-90-5I-B3KE is usually 5 days.

3.What payment methods are accepted for SST38VF6401-90-5I-B3KE?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST38VF6401-90-5I-B3KE transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SST38VF6401-90-5I-B3KE?

SST38VF6401-90-5I-B3KE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SST38VF6401-90-5I-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 SST38VF6401-90-5I-B3KE?

For technical support, including SST38VF6401-90-5I-B3KE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST38VF6401-90-5I-B3KE requirements.

6.How does Aetrix verify that SST38VF6401-90-5I-B3KE is sourced from the original manufacturer or authorized distributors?

All SST38VF6401-90-5I-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 SST38VF6401-90-5I-B3KE meets industry standards.

7.What is the process for return or replacement of SST38VF6401-90-5I-B3KE?

All SST38VF6401-90-5I-B3KE units undergo pre-shipment inspection (PSI). If there is an issue with SST38VF6401-90-5I-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 SST38VF6401-90-5I-B3KE part is unused and in its original packaging.

Return procedure for SST38VF6401-90-5I-B3KE:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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