My Inquiry
My Account
Microchip Technology SST39VF6401B-70-4C-B1KE-T
- Part No.:
- SST39VF6401B-70-4C-B1KE-T
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-TFBGA
- Datasheet:
-
SST39VF6401B-70-4C-B1KE-T.pdf
- Description:
- IC FLASH 64MBIT PARALLEL 48TFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:2,402
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SST39VF6401B-70-4C-B1KE-T from Microchip is a 64 Mbit (4M × 16) CMOS Multi-Purpose Flash Plus (MPF+) memory IC with bottom-block hardware write protection, 70 ns read access time, single 2.7–3.6 V supply operation, and JEDEC-standard x16 asynchronous interface - used for firmware storage and configuration in industrial control panels and legacy embedded boot systems.
For engineers reviewing the SST39VF6401B-70-4C-B1KE-T datasheet, SST39VF6401B-70-4C-B1KE-T pinout, SST39VF6401B-70-4C-B1KE-T application, or SST39VF6401B-70-4C-B1KE-T equivalent, key selection considerations include bottom-boot block protection (000000H–007FFFH), 100,000-cycle endurance, sector/block/chip erase support, Auto Low Power mode (3 µA standby), and TSOP-48 package compatibility with legacy x16 parallel bus designs.
Technical Context
The SST39VF6401B-70-4C-B1KE-T implements SuperFlash split-gate cell technology enabling fixed 7 µs word-program and 18 ms sector/block erase times independent of cycle count. Its command-set architecture supports JEDEC-standard software data protection (three-byte unlock + address/data load) and CFI query mode for automatic system identification.
Hardware block protection is implemented via WP# pin assertion to lock the bottom 32 KWord (256 KB) boot block (000000H–007FFFH); RST# provides hardware reset to Read mode; and DQ6/DQ7 status bits enable real-time erase/program completion detection without polling overhead.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 4M × 16 (64 Mbit total, x16 data bus width) |
| Read Access Time | 70 ns - enables direct connection to 14 MHz microcontroller buses without wait states |
| Supply Voltage | 2.7–3.6 V - single-supply operation compatible with 3.3 V logic systems |
| Endurance | 100,000 program/erase cycles - sufficient for field firmware updates over 10+ years |
| Data Retention | >100 years - ensures long-term reliability in unpowered storage applications |
| Standby Current | 3 µA typical - supports ultra-low-power sleep modes in battery-backed systems |
| Boot Block Protection | Bottom 32 KWord (256 KB) - protects bootloader code from accidental overwrite |
Pinout & Package
Package: 48-lead TSOP (12 mm × 20 mm), RoHS-compliant, standard JEDEC x16 flash footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A21 | Address Inputs | 22-bit address bus; AMS = A21 selects top/bottom block during erase operations |
| DQ0–DQ15 | Data I/O | x16 bidirectional data bus with latched inputs and tri-state outputs controlled by CE#/OE# |
| CE# | Chip Enable | Active-low chip select; device enters standby when high |
| OE# | Output Enable | Active-low output gate; controls data bus tristate during reads |
| WE# | Write Enable | Active-low control for program/erase command latching and timing initiation |
| WP# | Write Protect | Active-low hardware lock for bottom 32 KWord boot block (000000H–007FFFH) |
| RST# | Reset | Active-low hardware abort of ongoing erase/program; forces return to Read mode |
| VDD / VSS | Power / Ground | Single 2.7–3.6 V supply; dual ground pins for noise reduction in high-speed reads |
Key Features
| Feature | Design Value |
|---|---|
| SuperFlash Technology | Split-gate cell with thick-oxide tunneling injector enables fixed 7 µs program and 18 ms erase times across full lifecycle |
| Erase-Suspend/Resume | Allows read access to non-suspended sectors during active erase - critical for real-time interrupt handling in bootloaders |
| Security ID | 256-bit space (128-bit factory + 128-bit user) for secure device authentication and firmware binding |
| Auto Low Power Mode | Automatically transitions from 9 mA active read to 3 µA after valid access - no software intervention required |
| JEDEC Command Compatibility | Software command set matches industry-standard flash devices, reducing porting effort for existing BSPs |
Applications
| Industrial PLC Firmware Storage | Legacy Embedded Bootloader Memory |
|---|---|
|
Use Scenario: Nonvolatile storage of ladder logic programs and I/O configuration in DIN-rail mounted programmable logic controllers operating at -40°C to +85°C. IC Role / Device Role / Timing Role: Primary boot memory mapped to CPU address space; provides 70 ns read access to sustain deterministic scan cycle timing. Use Value: Bottom-block protection prevents corruption of startup routines during field firmware updates; 100-year data retention eliminates recalibration concerns in sealed enclosures. |
Use Scenario: Storing BIOS/UEFI firmware and hardware initialization code in legacy x86-based industrial PCs with parallel memory interfaces. IC Role / Device Role / Timing Role: x16 asynchronous flash device directly interfaced to chipset's memory controller; supports JEDEC-standard CFI queries for auto-configuration. Use Value: Sector-erase capability enables granular firmware patching without full reflash; RST# pin allows safe recovery from failed update sequences. |
| Medical Device Configuration Archive | Telecom Line Card Parameter Storage |
|
Use Scenario: Retaining calibration coefficients, usage logs, and regulatory compliance settings in Class II medical instruments requiring traceable, tamper-resistant memory. IC Role / Device Role / Timing Role: Secure configuration store accessed only during power-up or maintenance mode; WP# physically tied low to lock boot region. Use Value: Security ID feature binds firmware to hardware serial; 100,000-cycle endurance supports lifetime recalibration events per FDA guidelines. |
Use Scenario: Holding DSP coefficient tables, line impedance profiles, and protocol stack parameters in carrier-grade DSLAM line cards deployed in temperature-controlled central offices. IC Role / Device Role / Timing Role: Parallel flash memory supporting hot-swap firmware updates without service interruption via Erase-Suspend capability. Use Value: Block-erase (18 ms) and chip-erase (40 ms) enable rapid provisioning of new service profiles; CFI data simplifies driver development across multiple card variants. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar parallel NOR flash applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SST39VF6402B-70-4C-B1KE-T | Top-boot block protection (3F8000H–3FFFFFH) instead of bottom-boot; otherwise identical pinout, timing, and command set | Used where bootloader resides in upper memory region; incompatible for bottom-boot designs without PCB change | Select only if top-boot architecture matches system memory map and WP# logic is inverted |
| SST38VF6401-70-4C-B1KE-T | Newer generation with same density and voltage range but improved 55 ns access time, lower 2.5 µA standby current, and enhanced ESD robustness | Drop-in replacement for new designs; requires validation of timing margins due to faster access | Preferred for new designs per Microchip's "Not Recommended for New Designs" notice on SST39VF6401B |
Compared with SST39VF6401B-70-4C-B1KE-T, SST39VF6402B offers mirrored boot protection but no functional upgrade, while SST38VF6401 delivers measurable performance and power improvements - making it the recommended path for design refreshes requiring backward-compatible pinout and command compatibility.
Availability
SST39VF6401B-70-4C-B1KE-T is available at Aetrix Electronics and suitable for industrial control panels, legacy embedded boot systems, and telecom line card parameter storage requiring stable component supply and long-lifecycle support.
Supply support for SST39VF6401B-70-4C-B1KE-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 U.S.-based semiconductor manufacturer specializing in microcontrollers, analog devices, and nonvolatile memory solutions for industrial, automotive, and communications markets.
The SST39VF6401B-70-4C-B1KE-T belongs to Microchip's legacy SuperFlash MPF+ family, designed specifically for cost-sensitive, high-reliability parallel NOR flash applications in systems with established x16 bus architectures.
FAQ
What does the "B1KE-T" suffix indicate in SST39VF6401B-70-4C-B1KE-T?
The "B1KE-T" suffix denotes a 48-lead TSOP package (B1), lead-free (K), tape-and-reel packaging (E), and commercial temperature grade (T: 0°C to +70°C). It confirms RoHS compliance and surface-mount compatibility per JEDEC MO-142AB standard. The SST39VF6401B-70-4C-B1KE-T uses this exact package variant for board-level integration into legacy industrial PCBs.
Does SST39VF6401B-70-4C-B1KE-T support both sector and block erase operations?
Yes, the SST39VF6401B-70-4C-B1KE-T supports uniform 2 KWord sector erase (18 ms typical) and uniform 32 KWord block erase (18 ms typical), initiated via distinct six-byte command sequences (50H for sector, 30H for block). Both operations respect WP# state and can be suspended/resumed using B0H/30H commands - a capability confirmed in DS20005008C Section 6.
How is hardware write protection implemented on SST39VF6401B-70-4C-B1KE-T?
Hardware write protection on SST39VF6401B-70-4C-B1KE-T is enabled by grounding the WP# pin, which locks the bottom 32 KWord (256 KB) boot block (000000H–007FFFH) against program and erase operations. When WP# floats, an internal pull-up holds it high, disabling protection. This behavior is specific to SST39VF6401B and differs from SST39VF6402B's top-block protection.
What status detection methods does SST39VF6401B-70-4C-B1KE-T provide for erase/program completion?
The SST39VF6401B-70-4C-B1KE-T provides two hardware-supported status detection methods: Data# Polling (DQ7 toggles to true data upon completion) and Toggle Bit (DQ6 toggles during operation and stops when complete). Both are valid after the rising edge of the sixth WE# pulse for erase and fourth WE# pulse for program - enabling efficient polling without timer dependencies.
Is SST39VF6401B-70-4C-B1KE-T compatible with JEDEC-standard x16 flash command sets?
Yes, the SST39VF6401B-70-4C-B1KE-T implements JEDEC-standard pin assignments and software command sequences, including three-byte unlock for program and six-byte sequences for sector/block/chip erase. Its CFI Query mode (98H command) returns standardized geometry and timing data - ensuring interoperability with generic flash drivers and programming tools.
SST39VF6401B-70-4C-B1KE-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- SST39 MPF™
- 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TFBGA
SST39VF6401B-70-4C-B1KE-T FAQ
1.How can I place an order for SST39VF6401B-70-4C-B1KE-T through Aetrix?
Please submit a Request for Quotation (RFQ) for SST39VF6401B-70-4C-B1KE-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 SST39VF6401B-70-4C-B1KE-T reliable?
The price and inventory of SST39VF6401B-70-4C-B1KE-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SST39VF6401B-70-4C-B1KE-T is usually 5 days.
3.What payment methods are accepted for SST39VF6401B-70-4C-B1KE-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST39VF6401B-70-4C-B1KE-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST39VF6401B-70-4C-B1KE-T?
SST39VF6401B-70-4C-B1KE-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST39VF6401B-70-4C-B1KE-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 SST39VF6401B-70-4C-B1KE-T?
For technical support, including SST39VF6401B-70-4C-B1KE-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST39VF6401B-70-4C-B1KE-T requirements.
6.How does Aetrix verify that SST39VF6401B-70-4C-B1KE-T is sourced from the original manufacturer or authorized distributors?
All SST39VF6401B-70-4C-B1KE-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 SST39VF6401B-70-4C-B1KE-T meets industry standards.
7.What is the process for return or replacement of SST39VF6401B-70-4C-B1KE-T?
All SST39VF6401B-70-4C-B1KE-T units undergo pre-shipment inspection (PSI). If there is an issue with SST39VF6401B-70-4C-B1KE-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 SST39VF6401B-70-4C-B1KE-T part is unused and in its original packaging.
Return procedure for SST39VF6401B-70-4C-B1KE-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SST39VF6401B-70-4C-B1KE-T 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…
