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Microchip Technology SST38VF6401BT-70I/CD
- Part No.:
- SST38VF6401BT-70I/CD
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-TFBGA
- Datasheet:
-
SST38VF6401BT-70I/CD.pdf
- Description:
- IC FLASH 64MBIT PARALLEL 48TFBGA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SST38VF6401BT-70I/CD from Microchip Technology is a 64 Mbit (4M × 16) CMOS Advanced Multi-Purpose Flash Plus memory IC, organized as 4M words × 16 bits, operating from 2.7–3.6V, with 70 ns read access time and 100,000 program/erase cycles endurance - used for firmware storage, boot code retention, and configuration memory in industrial controllers and embedded systems.
For engineers reviewing the SST38VF6401BT-70I/CD datasheet, SST38VF6401BT-70I/CD pinout, SST38VF6401BT-70I/CD application, or SST38VF6401BT-70I/CD equivalent, key selection considerations include its TSOP-48 package, uniform 32 KWord block architecture, hardware boot block protection via WP#, RY/BY# status signaling, and support for Page Read (25 ns), Write-Buffer Programming (1.75 μs/word), and Erase-Suspend/Resume.
Technical Context
This device implements Microchip's SuperFlash technology with split-gate cells and thick-oxide tunneling injectors, enabling fixed erase/program times independent of cycle count - unlike conventional flash, eliminating software de-rating. It supports JEDEC-standard x16 pinouts and CFI compliance for interoperability with standard memory controllers.
Operation relies on command-based sequences latched via WE#/CE# edges, with dual status detection (DQ6 toggle bit, DQ7 data# polling) and dedicated RY/BY# output for real-time program/erase monitoring. The 128-bit unique ID and 248-word OTP Security-ID enable secure firmware binding and device authentication.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 64 Mbit (4M × 16), providing 8 MB of nonvolatile storage for full boot images or application binaries. |
| Read Access Time | 70 ns (max), enabling direct execution from flash (XIP) in timing-critical microcontroller interfaces. |
| Page Read Speed | 25 ns per word (8-word page), reducing average instruction fetch latency by >2× vs. standard read mode. |
| Endurance | 100,000 program/erase cycles minimum, supporting field-updatable firmware with multi-year service life. |
| Data Retention | >100 years at 25°C, ensuring long-term reliability in unpowered storage for medical, aerospace, and infrastructure systems. |
| Supply Voltage | 2.7–3.6V single supply, compatible with modern low-voltage 3.3V system rails without level-shifting. |
| Active Current | 25 mA typical at 5 MHz, enabling efficient operation in power-constrained edge devices. |
| Standby Current | 5 μA typical, supporting ultra-low-power sleep modes in battery-backed or energy-harvesting applications. |
Pinout & Package
Package: 48-lead TSOP (Thin Small Outline Package), RoHS-compliant, surface-mountable with 0.5 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A21 | Address Inputs | 22-bit address bus (AMS = A21) selecting 4M × 16 locations; A21–A15 define block address during 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 (5 μA) when high, enabling multi-chip memory expansion. |
| OE# | Output Enable | Active-low output gate; controls data bus visibility without affecting internal state or power mode. |
| WE# | Write Enable | Controls write command latching; falling/rising edge timing defines address/data capture for all operations. |
| WP# | Write Protect | Hardware boot block lock: grounded to prevent accidental erase/program of top/bottom 32 KWord region. |
| RST# | Reset | Hardware reset input; forces return to Read mode, clearing pending operations and status flags. |
| RY/BY# | Ready/Busy | Open-drain status output: low during active program/erase, enabling interrupt-driven host coordination. |
| VDD / VSS | Power / Ground | Single 2.7–3.6V supply with decoupling required; VSS pins provide dedicated ground returns for noise immunity. |
| NC | No Connection | Unbonded pin (A16 in TSOP); must be left floating or tied to ground per layout guidelines. |
Key Features
| Feature | Design Value |
|---|---|
| Write-Buffer Programming | 16-word buffer enables 1.75 μs/word effective programming - 4× faster than single-word writes for firmware patching. |
| Erase-Suspend/Resume | Pause ongoing block erase to read/program other blocks, enabling real-time firmware updates without halting system operation. |
| Auto Low Power Mode | Automatically transitions to 5 μA standby after valid read access - no software intervention needed for dynamic power scaling. |
| Security-ID OTP Memory | 248-word one-time-programmable area stores cryptographic keys or device-specific identifiers for secure boot validation. |
| Uniform Block Protection | Software-controlled individual 32 KWord block locking plus hardware WP#-enabled boot block protection prevents unauthorized reprogramming. |
| CFI Compliance | Industry-standard Common Flash Interface allows automatic detection and configuration by BIOS/bootloader without hard-coded drivers. |
Applications
| Industrial PLC Firmware Storage | Medical Device Boot Code Retention |
|---|---|
Use Scenario: Storing and executing boot firmware and control logic in programmable logic controllers deployed in factory automation environments with wide temperature ranges and long service life requirements. IC Role / Device Role / Timing Role: Nonvolatile program memory providing XIP-capable instruction storage with 70 ns read access and hardware write protection against EMI-induced corruption. Use Value: Eliminates need for external EEPROM or serial flash + SRAM combinations, reducing BOM count while guaranteeing >100-year data retention under thermal stress. |
Use Scenario: Holding certified bootloader and safety-critical initialization routines in Class II/III medical equipment requiring traceable, tamper-resistant firmware storage compliant with IEC 62304. IC Role / Device Role / Timing Role: Secure configuration memory with 128-bit unique ID and OTP Security-ID for cryptographic signature verification and device identity binding. Use Value: Enables hardware-enforced secure boot chain using on-chip protection features (WP#, VPB/NVPB) to prevent unauthorized firmware modification during servicing. |
| Telecom Base Station Configuration | Automotive Infotainment System Updates |
Use Scenario: Storing radio calibration tables, protocol stacks, and field-upgradable configuration parameters in 4G/5G remote radio units exposed to vibration and thermal cycling. IC Role / Device Role / Timing Role: High-reliability parameter memory supporting Erase-Suspend to allow background configuration updates without interrupting live RF transmission. Use Value: Achieves zero-downtime field upgrades via Write-Buffer Programming (1.75 μs/word) and uniform 32 KWord block erase - minimizing service window duration. |
Use Scenario: Hosting infotainment OS kernel, UI assets, and over-the-air (OTA) update staging area in automotive head units requiring AEC-Q100 Grade 3 qualification and robust ESD immunity. IC Role / Device Role / Timing Role: Dual-role memory serving as both boot ROM and update scratch space, leveraging Page Read (25 ns) for fast UI rendering and RY/BY# for deterministic OTA progress signaling. Use Value: Reduces OTA update time by >60% versus legacy parallel flash through buffered programming and suspend/resume capability across multiple memory banks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SST39VF6401B-70-4C-EKE | Same 64 Mbit x16 density, 70 ns access, TSOP-48, but uses older SST39 architecture without Write-Buffer Programming or Erase-Suspend. | Lacks Page Read acceleration and security features (Security-ID, OTP); suitable only for cost-sensitive legacy designs without field update needs. | Select only if existing design uses SST39 command set and does not require suspend/resume or fast buffered writes. |
| MX29LV640ETTI-70G | 64 Mbit x16, 70 ns, TSOP-48, Macronix device with similar voltage range but no Auto Low Power mode or 128-bit UID. | No hardware boot block protection via WP#; relies solely on software locking; lacks CFI compliance and uniform block architecture. | Prefer when sourcing diversification is required and system firmware already implements custom status polling without RY/BY# dependency. |
Compared with SST38VF6401BT-70I/CD, the SST39VF6401B-70-4C-EKE omits critical field-update enablers (Erase-Suspend, Write-Buffer), while MX29LV640ETTI-70G sacrifices security and power efficiency - making SST38VF6401BT-70I/CD the only option supporting simultaneous secure boot, low-power operation, and zero-downtime firmware patching.
Availability
SST38VF6401BT-70I/CD is available at Aetrix Electronics and suitable for industrial PLCs, medical diagnostic equipment, telecom base stations, and automotive infotainment systems requiring stable component supply, long-lifecycle support, and guaranteed RoHS-compliant manufacturing.
Supply support for SST38VF6401BT-70I/CD 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 leading provider of microcontrollers, analog components, and memory solutions, delivering high-reliability semiconductor products for industrial, automotive, and communications markets.
The SST38VF6401BT-70I/CD belongs to Microchip's Advanced Multi-Purpose Flash Plus (MPF+) product line, engineered specifically for embedded systems requiring secure, field-upgradable, low-power nonvolatile memory with deterministic timing and long-term data integrity.
FAQ
What is the maximum operating temperature range for the SST38VF6401BT-70I/CD?
The SST38VF6401BT-70I/CD is rated for industrial temperature operation from –40°C to +85°C, as indicated by the "I" suffix in the part number. This ensures reliable performance in harsh environments such as factory floors, outdoor telecom enclosures, and vehicle under-hood applications where thermal stability is critical. The device maintains full specification compliance-including 70 ns read access and 100,000-cycle endurance-across this entire range.
Does the SST38VF6401BT-70I/CD support JEDEC-standard command sets?
Yes, the SST38VF6401BT-70I/CD is fully JEDEC-compliant for x16 parallel flash devices, implementing standard pinouts and command protocols including CFI (Common Flash Interface). This enables plug-and-play compatibility with industry-standard memory controllers, BIOS implementations, and programming tools without custom driver development. The CFI table is accessible at address 0x0055 for automatic configuration detection.
How does the Write-Buffer Programming feature improve firmware update speed in the SST38VF6401BT-70I/CD?
The SST38VF6401BT-70I/CD's Write-Buffer Programming allows up to 16 words to be loaded into an internal buffer before committing to flash, achieving 1.75 μs per word versus 7 μs for standard Word-Program. This reduces total programming time for a 256-byte firmware patch by ~75%, significantly accelerating field updates in industrial and medical devices where downtime must be minimized.
Can the SST38VF6401BT-70I/CD be used in systems requiring secure boot functionality?
Yes, the SST38VF6401BT-70I/CD supports secure boot through multiple hardware-enforced mechanisms: a 128-bit unique ID for device fingerprinting, 248-word OTP Security-ID memory for storing cryptographic keys, and hardware boot block protection via the WP# pin. These features enable tamper-resistant bootloader storage and firmware signature verification in safety-critical applications like medical devices and industrial controllers.
What package type is used for the SST38VF6401BT-70I/CD, and is it RoHS-compliant?
The SST38VF6401BT-70I/CD is supplied in a 48-lead TSOP (Thin Small Outline Package) with 0.5 mm lead pitch, optimized for high-density PCB layouts and automated SMT assembly. All units are fully RoHS-compliant and lead-free, meeting Directive 2011/65/EU requirements. The "/CD" suffix confirms tape-and-reel packaging with moisture sensitivity level (MSL) 3 per J-STD-020.
SST38VF6401BT-70I/CD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- SST38
- Package/Case:
- 48-TFBGA
- Packaging:
- Tape & Reel (TR)
- 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:
- 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)
SST38VF6401BT-70I/CD FAQ
1.How can I place an order for SST38VF6401BT-70I/CD through Aetrix?
Please submit a Request for Quotation (RFQ) for SST38VF6401BT-70I/CD 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 SST38VF6401BT-70I/CD reliable?
The price and inventory of SST38VF6401BT-70I/CD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SST38VF6401BT-70I/CD is usually 5 days.
3.What payment methods are accepted for SST38VF6401BT-70I/CD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST38VF6401BT-70I/CD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST38VF6401BT-70I/CD?
SST38VF6401BT-70I/CD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST38VF6401BT-70I/CD 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 SST38VF6401BT-70I/CD?
For technical support, including SST38VF6401BT-70I/CD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST38VF6401BT-70I/CD requirements.
6.How does Aetrix verify that SST38VF6401BT-70I/CD is sourced from the original manufacturer or authorized distributors?
All SST38VF6401BT-70I/CD 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 SST38VF6401BT-70I/CD meets industry standards.
7.What is the process for return or replacement of SST38VF6401BT-70I/CD?
All SST38VF6401BT-70I/CD units undergo pre-shipment inspection (PSI). If there is an issue with SST38VF6401BT-70I/CD, 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 SST38VF6401BT-70I/CD part is unused and in its original packaging.
Return procedure for SST38VF6401BT-70I/CD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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