My Inquiry
My Account
Microchip Technology SST38VF6401-90-5I-EKE
- Part No.:
- SST38VF6401-90-5I-EKE
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
SST38VF6401-90-5I-EKE.pdf
- Description:
- IC FLASH 64MBIT PARALLEL 48TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,137
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SST38VF6401-90-5I-EKE 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 JEDEC-standard x16 parallel interface. It delivers 100,000 program/erase cycles endurance, >100 years data retention, and supports boot-block hardware protection for embedded firmware storage in industrial controllers and network edge devices.
For engineers reviewing the SST38VF6401-90-5I-EKE datasheet, SST38VF6401-90-5I-EKE pinout, SST38VF6401-90-5I-EKE application, or SST38VF6401-90-5I-EKE equivalent, this page provides verified technical context, JEDEC-compliant pin mapping, real-world flash usage scenarios, and validated alternative parts for firmware update, configuration storage, and boot code retention designs.
Technical Context
The SST38VF6401-90-5I-EKE implements SuperFlash split-gate cell technology with thick-oxide tunneling injector, enabling fixed erase/program times independent of cycle count. Its architecture supports latched address/data, 4-word Page Read buffer, and 16-word Write Buffer for accelerated programming.
It features dual status detection (DQ6 toggle bit and DQ7 Data# Polling), RY/BY# output for hardware-ready signaling, and Erase-Suspend/-Resume capability to allow concurrent read/program during background erase. Protection includes hardware WP#-controlled boot block lock, software-configurable individual 32 KWord block locks, and password-based security.
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 | 90 ns (max), enabling direct execution from flash (XIP) in systems with ≤11 MHz bus timing budgets. |
| Page Read Speed | 25 ns per word (4-word page), reducing average read latency by 72% vs. standard random access in burst-fetch applications. |
| Write Performance | 1.75 µs/word via Write Buffer (16-word max), cutting full-page programming time to ≤28 µs versus 112 µs for sequential word writes. |
| Endurance & Retention | 100,000 program/erase cycles minimum; >100 years data retention at 25°C - suitable for field-upgradable systems with infrequent updates. |
| Voltage Range | 2.7–3.6 V single supply - compatible with 3.3 V logic domains without level shifters or auxiliary regulators. |
| Protection Features | Hardware boot block lock (WP# pin), software-selectable 32 KWord block locks, and 256-word OTP Security-ID for secure boot verification. |
Pinout & Package
Package: 48-lead TSOP (Thin Small Outline Package), RoHS-compliant, standard JEDEC MO-142AC footprint (12.0 × 20.0 mm).
| 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; device enters standby (3 µA) when high; required low for all operations. |
| OE# | Output Enable | Active-low output gate; controls data bus drive; high = high-impedance state. |
| WE# | Write Enable | Active-low write control; latches address/data on falling/rising edges per JEDEC command protocol. |
| WP# | Write Protect | Active-low hardware lock for top/bottom boot block (B0 or B127); overrides software protection when grounded. |
| RST# | Reset | Active-low hardware reset; returns device to Read mode and aborts ongoing Program/Erase operations. |
| RY/BY# | Ready/Busy | Open-drain status output; low = 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. |
| VSS | Ground | Common reference for all signals and power; two dedicated pins for noise reduction. |
| NC | No Connection | Unbonded pin (A16 in TSOP); must be left floating or tied to VSS per layout guidelines. |
Key Features
| Feature | Design Value |
|---|---|
| SuperFlash Technology | Split-gate cell with thick-oxide injector enables fixed 18 ms sector/block erase time across full lifecycle - eliminates software de-rating. |
| Auto Low Power Mode | Reduces active read current from 4 mA to 3 µA after valid access - cuts idle power by 99.9% in intermittently polled systems. |
| Erase-Suspend/-Resume | Allows reading or programming non-erasing sectors during background erase - essential for real-time firmware patching without halting operation. |
| 128-bit Unique ID | Factory-programmed serial number accessible via command sequence - enables device-specific license binding or anti-cloning in OEM deployments. |
| CFI Compliance | Supports Common Flash Interface standard for automatic parameter discovery in bootloader code - eliminates hard-coded timing constants. |
Applications
| Industrial PLC Firmware Storage | Network Router Boot Code |
|---|---|
Use Scenario: Storing and updating ladder logic firmware in programmable logic controllers operating in harsh factory environments with wide temperature swings. IC Role / Device Role / Timing Role: Nonvolatile boot memory holding primary firmware image and recovery partition; accessed via 16-bit parallel bus during cold start and field updates. Use Value: Hardware WP#-protected boot block prevents corruption during brown-out events; 100-year retention ensures firmware integrity over equipment lifetime without battery backup. |
Use Scenario: Holding bootloader, kernel image, and configuration files in enterprise-grade routers requiring secure, field-upgradable firmware. IC Role / Device Role / Timing Role: Primary parallel NOR flash executing XIP code during boot; supports fast Page Read for rapid kernel decompression and CFI-based auto-configuration. Use Value: 25 ns Page Read reduces boot time by ≥35% vs. standard 90 ns random access; Erase-Suspend allows live configuration updates without service interruption. |
| Medical Device Configuration Memory | Automotive Infotainment System |
Use Scenario: Storing calibrated sensor offsets, user preferences, and regulatory compliance logs in Class II medical instruments with strict data integrity requirements. IC Role / Device Role / Timing Role: Secure configuration storage with OTP Security-ID and password-protected blocks; accessed via microcontroller's external memory interface during initialization. Use Value: 256-word OTP area binds calibration certificates to hardware; >100,000 endurance supports daily recalibration cycles over 27+ years of clinical use. |
Use Scenario: Hosting UI assets, voice recognition models, and map data in automotive head units where vibration resistance and thermal stability are critical. IC Role / Device Role / Timing Role: High-reliability parallel flash interfaced to application processor's EMIF; leverages Auto Low Power mode during display sleep states. Use Value: 3 µA standby current extends battery drain time during key-off; SuperFlash technology withstands 1000+ thermal cycles without parameter drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar parallel NOR flash applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| S29GL064S90TFI010 | 64 Mbit (4M × 16), 90 ns access, but uses MirrorBit technology; requires 3.0–3.6 V only (no 2.7 V support). | Lacks Erase-Suspend and Auto Low Power mode; no 128-bit UID or Security-ID OTP. | Choose for cost-sensitive designs where 2.7 V operation and advanced suspend/resume are not required. |
| MX29LV640ETTI-90G | 64 Mbit (4M × 16), 90 ns, 2.7–3.6 V compatible; includes CFI but no RY/BY# pin or hardware reset (RST#). | Missing WP#-driven boot block lock; relies solely on software protection - less robust against voltage glitch attacks. | Prefer when board space constraints prohibit adding external reset circuitry and boot security is managed in software. |
Compared with SST38VF6401-90-5I-EKE, S29GL064S90TFI010 offers tighter voltage tolerance but sacrifices suspend capability and low-power modes, while MX29LV640ETTI-90G matches voltage range and density but lacks hardware-level boot protection and ready/busy signaling - making SST38VF6401-90-5I-EKE optimal for safety-critical or real-time update scenarios.
Availability
SST38VF6401-90-5I-EKE is available at Aetrix Electronics and suitable for industrial PLC firmware storage, network router boot code, medical device configuration memory, and automotive infotainment systems requiring stable component supply across extended product lifecycles.
Supply support for SST38VF6401-90-5I-EKE 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 components, and memory solutions, with emphasis on reliability, longevity, and industrial-grade qualification.
The SST38VF6401-90-5I-EKE belongs to Microchip's Advanced Multi-Purpose Flash Plus (MPF+) family, designed specifically for embedded systems requiring robust, field-upgradable nonvolatile storage with hardware-enforced security and deterministic timing.
FAQ
What is the maximum clock frequency supported by SST38VF6401-90-5I-EKE for reliable read operations?
The SST38VF6401-90-5I-EKE does not use a clock signal - it is an asynchronous parallel NOR flash. Its 90 ns read access time corresponds to a maximum effective bus frequency of approximately 11 MHz for random reads. For Page Read, the 25 ns per-word timing enables sustained throughput equivalent to ~40 MHz burst operation within a 4-word page. System timing must comply with JEDEC-standard setup/hold requirements for CE#, OE#, and address stability.
Does SST38VF6401-90-5I-EKE support execute-in-place (XIP) functionality?
Yes, SST38VF6401-90-5I-EKE supports execute-in-place (XIP) directly from flash memory. Its 90 ns random read access time and latched address/data architecture allow microcontrollers with external memory interfaces to fetch instructions without copying to RAM. The device's 4-word Page Read buffer further accelerates sequential instruction fetches, making SST38VF6401-90-5I-EKE suitable for boot code and real-time firmware execution in resource-constrained systems.
How does the hardware WP# pin protect memory on SST38VF6401-90-5I-EKE?
When WP# is driven low, SST38VF6401-90-5I-EKE permanently disables Program and Erase operations on its boot block (B0 for SST38VF6401), regardless of software protection settings. This hardware lock remains active even during power cycling or reset events, preventing accidental or malicious corruption of critical boot code. Unlike software-only locks, WP# protection cannot be overridden by command sequences - it is a physical enable/disable gate for the boot block's write path.
Can SST38VF6401-90-5I-EKE be used in automotive applications?
SST38VF6401-90-5I-EKE is rated for industrial temperature range (–40°C to +85°C) and qualified to AEC-Q100 stress test standards per Microchip documentation. Its SuperFlash technology provides proven reliability under thermal cycling and vibration, and features like Erase-Suspend, hardware reset (RST#), and >100-year data retention meet functional safety requirements for infotainment and body control modules. However, system-level ASIL certification must be validated per end-application design.
What is the purpose of the RY/BY# pin on SST38VF6401-90-5I-EKE?
The RY/BY# (Ready/Busy) pin on SST38VF6401-90-5I-EKE is an open-drain output that signals active Program or Erase operations: it goes low during internal write cycles and returns high upon completion. This enables hardware flow control - microcontrollers can wait on RY/BY# instead of polling DQ6/DQ7 - reducing CPU overhead and improving deterministic timing in real-time systems. RY/BY# is fully synchronized with internal state machines and asserts within 20 ns of operation start.
SST38VF6401-90-5I-EKE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- SST38
- Package/Case:
- 48-TFSOP (0.724", 18.40mm Width)
- 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-TSOP
SST38VF6401-90-5I-EKE FAQ
1.How can I place an order for SST38VF6401-90-5I-EKE through Aetrix?
Please submit a Request for Quotation (RFQ) for SST38VF6401-90-5I-EKE 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-EKE reliable?
The price and inventory of SST38VF6401-90-5I-EKE 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-EKE is usually 5 days.
3.What payment methods are accepted for SST38VF6401-90-5I-EKE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST38VF6401-90-5I-EKE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST38VF6401-90-5I-EKE?
SST38VF6401-90-5I-EKE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST38VF6401-90-5I-EKE 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-EKE?
For technical support, including SST38VF6401-90-5I-EKE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST38VF6401-90-5I-EKE requirements.
6.How does Aetrix verify that SST38VF6401-90-5I-EKE is sourced from the original manufacturer or authorized distributors?
All SST38VF6401-90-5I-EKE 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-EKE meets industry standards.
7.What is the process for return or replacement of SST38VF6401-90-5I-EKE?
All SST38VF6401-90-5I-EKE units undergo pre-shipment inspection (PSI). If there is an issue with SST38VF6401-90-5I-EKE, 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-EKE part is unused and in its original packaging.
Return procedure for SST38VF6401-90-5I-EKE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SST38VF6401-90-5I-EKE Tags
-
M24C02-WMN6TP
STMicroelectronics
-
AT24C02C-XHM-T
Microchip Technology
-
AT21CS01-STUM10-T
Microchip Technology
-
AT24C02C-SSHM-T
Microchip Technology
-
24LC01BT-I/OT
Microchip Technology
-
M24C02-FMC6TG
STMicroelectronics
-
AT24CS02-SSHM-T
Microchip Technology
-
93LC46BT-I/OT
Microchip Technology
-
AT24C04C-SSHM-T
Microchip Technology
-
24LC01BT-I/SN
Microchip Technology
-
24AA02UIDT-I/OT
Microchip Technology
-
AT24C08C-STUM-T
Microchip Technology
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
