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Microchip Technology SST38VF6401B-70I/TV
- Part No.:
- SST38VF6401B-70I/TV
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
SST38VF6401B-70I/TV.pdf
- Description:
- IC FLASH 64MBIT PARALLEL 48TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:167
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Product details
Overview
SST38VF6401B-70I/TV from Microchip Technology is a 64 Mbit (4M × 16) CMOS Advanced Multi-Purpose Flash Plus memory IC, designed for nonvolatile program/data storage in embedded systems. It operates from a single 2.7–3.6V supply, delivers 70 ns read access time and 7 μs typical word-program time, and supports hardware boot block protection via WP# pin - used in industrial controllers requiring field-upgradable firmware with secure write control.
For engineers reviewing the SST38VF6401B-70I/TV datasheet, SST38VF6401B-70I/TV pinout, SST38VF6401B-70I/TV application, or SST38VF6401B-70I/TV equivalent, key selection criteria include uniform 32 KWord block architecture, 128-bit unique ID for device authentication, Erase-Suspend/-Resume capability for real-time firmware updates, and JEDEC-compliant x16 interface compatibility with legacy microprocessor buses.
Technical Context
The SST38VF6401B-70I/TV implements Microchip's SuperFlash technology with split-gate cells and thick-oxide tunneling injectors, enabling fixed erase/program times independent of cycle count. It uses standard JEDEC x16 flash command sets and CFI compliance for interoperability.
Its memory map comprises 128 uniform 32 KWord blocks (B0–B127), with B0 designated as the top boot block protected by hardware WP# input and software-controlled individual block locking. Page Read mode enables 25 ns per-word access across an 8-word buffer using A2–A0 address toggling while holding A21–A3 constant.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 4M × 16 (64 Mbit); supports byte-wide data transfers on DQ15–DQ0 with latched address/data timing. |
| Read Access Time | 70 ns (max); ensures compatibility with 14 MHz microprocessor bus timing without wait states. |
| Page Read Speed | 25 ns per word (typical); enables burst reads of up to eight consecutive words from same page for firmware execution acceleration. |
| Word-Program Time | 7 μs (typical); reduces firmware update latency compared to conventional NOR flash with variable programming times. |
| Block-Erase Time | 18 ms (typical); fixed duration regardless of accumulated program/erase cycles due to SuperFlash cell design. |
| Data Retention | >100 years; validated under JEDEC JESD22-A117 stress conditions, supporting long-life industrial deployments. |
| Endurance | 100,000 program/erase cycles (min); guaranteed across full temperature range (–40°C to +85°C). |
| Supply Voltage | 2.7–3.6 V; single-rail operation eliminates need for auxiliary voltage regulators in low-power embedded designs. |
Pinout & Package
Package: 48-lead TSOP (Thin Small Outline Package), RoHS-compliant, lead-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A21 | Address Inputs | 22-bit address bus (AMS = A21); selects 4M × 16 memory locations; A21–A15 define block address during Block-Erase. |
| DQ0–DQ15 | Data I/O | 16-bit bidirectional data bus; tri-stated when CE# or OE# is high; internally latched during Write cycles. |
| WE#, CE#, OE# | Control Inputs | Standard x16 flash control signals: Write Enable, Chip Enable, Output Enable - fully compatible with JEDEC JESD21-C timing. |
| WP# | Hardware Write Protect | Active-low input that locks top boot block (B0) against accidental erase/program when grounded. |
| RST# | Hardware Reset | Active-low signal forcing device into Read mode; required for recovery after power-on or command timeout. |
| RY/BY# | Ready/Busy Indicator | Open-drain output signaling active Program/Erase; used for hardware flow control without polling overhead. |
| VDD, VSS | Power/Ground | Single 2.7–3.6V supply; dual VSS pins ensure stable reference for noise-sensitive flash operations. |
| NC | No Connection | Unbonded pin; must be left floating or tied to VSS per layout guidelines to avoid parasitic coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Uniform 32 KWord Block Architecture | Enables deterministic firmware partitioning and predictable erase scheduling across all 128 blocks (B0–B127). |
| Erase-Suspend/-Resume | Allows interruption of Block-Erase to service real-time interrupts or perform background reads, resuming within 200 μs. |
| 128-bit Unique ID + Security-ID | Provides immutable device fingerprinting and 248-word OTP space for cryptographic keys or calibration data storage. |
| Auto Low Power Mode | Reduces active read current from 25 mA to 5 μA after valid access, eliminating external power gating logic. |
| Write-Buffer Programming | 16-word buffer cuts effective programming time to 1.75 μs/word, accelerating bulk firmware writes by >3× vs. single-word mode. |
| JEDEC & CFI Compliance | Guarantees drop-in replacement in existing x16 flash sockets and enables automatic configuration via standard CFI query routines. |
Applications
| Industrial PLC Firmware Storage | Medical Device Configuration Memory |
|---|---|
Use Scenario: Storing and updating ladder logic firmware in programmable logic controllers deployed in factory automation environments with ambient temperatures up to +85°C. IC Role / Device Role / Timing Role: Nonvolatile program memory providing direct XIP-capable code storage with 70 ns read access for deterministic scan-cycle execution. Use Value: 100,000-cycle endurance and >100-year data retention ensure firmware integrity over 15+ year equipment lifetimes without recalibration or refresh. |
Use Scenario: Holding calibrated sensor coefficients, user preferences, and regulatory audit logs in portable diagnostic equipment requiring FDA-compliant data persistence. IC Role / Device Role / Timing Role: Secure configuration memory leveraging 128-bit Unique ID for device binding and WP#-enabled boot block protection against unauthorized firmware modification. Use Value: Hardware-based write protection and OTP Security-ID space meet IEC 62304 Class C software safety requirements for medical firmware integrity. |
| Telecom Base Station Boot ROM | Automotive Infotainment System Code Storage |
Use Scenario: Hosting bootloader and FPGA configuration bitstreams in outdoor telecom cabinets exposed to wide thermal cycling (–40°C to +85°C). IC Role / Device Role / Timing Role: Boot block memory with hardware WP# lock preventing corruption during brown-out or hot-swap events during field maintenance. Use Value: Uniform 32 KWord erase blocks and fixed 18 ms erase time simplify bootloader update sequencing and reduce risk of partial erasure failures. |
Use Scenario: Storing infotainment OS kernel and UI assets in automotive head units where ESD immunity and AEC-Q100 qualification are mandatory. IC Role / Device Role / Timing Role: High-reliability code storage using SuperFlash cell technology, qualified to industrial temperature grade (–40°C to +85°C) per AEC-Q100 Rev G stress testing. Use Value: Lower total energy consumption during Program/Erase versus competing NOR flash reduces thermal load in sealed automotive enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SST39VF6401B-70I/TV | Same 64 Mbit x16 organization and SuperFlash architecture, but includes enhanced security features including irreversible block locking and extended CFI support. | Required for applications needing permanent memory block lockdown (e.g., secure boot partitions in payment terminals). | Select SST39VF6401B-70I/TV only if irreversible block protection or extended CFI descriptor tables are explicitly required. |
| MX29LV640ETTI-70G | 64 Mbit x16 Parallel NOR Flash with 70 ns access, but uses conventional floating-gate cells - endurance rated at 100K cycles, data retention at 20 years (vs. >100 years). | Suitable for cost-sensitive consumer electronics where lifetime requirements are ≤10 years and firmware update frequency is low. | Choose MX29LV640ETTI-70G only for non-critical applications where long-term data retention and cycle endurance are not design constraints. |
Compared with SST38VF6401B-70I/TV, SST39VF6401B-70I/TV adds irreversible block locking for tamper-proof boot code, while MX29LV640ETTI-70G trades off retention and endurance for lower unit cost - making SST38VF6401B-70I/TV optimal for industrial systems demanding both longevity and field-upgradability.
Availability
SST38VF6401B-70I/TV is available at Aetrix Electronics and suitable for industrial PLCs, medical diagnostic devices, telecom base station boot ROMs, and automotive infotainment systems requiring stable component supply across multi-year production cycles.
Supply support for SST38VF6401B-70I/TV 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, low-power design, and long-term product availability.
The SST38VF6401B-70I/TV belongs to Microchip's Advanced Multi-Purpose Flash Plus (MPF+) product line, engineered for embedded systems requiring robust, field-upgradable nonvolatile storage with deterministic timing and hardware-level security features.
FAQ
What is the operating temperature range for SST38VF6401B-70I/TV?
The SST38VF6401B-70I/TV is specified for industrial temperature operation from –40°C to +85°C. This rating is validated per JEDEC JESD22-A104 and JESD22-A108 stress tests, ensuring reliable read/write performance and data retention across the full range. The 'I' suffix in the part number explicitly denotes industrial-grade qualification, and the '/TV' suffix confirms TSOP packaging with lead-free finish.
Does SST38VF6401B-70I/TV support Page Read mode, and what is its practical benefit?
Yes, SST38VF6401B-70I/TV supports Page Read mode with 25 ns per-word access across an 8-word buffer. This allows sequential reads from the same page (A21–A3 held constant) by toggling only A2–A0, reducing average read latency by ~65% versus standard random-access mode. It is especially valuable for executing firmware code directly from flash (XIP) in resource-constrained microcontrollers.
How does the WP# pin function on SST38VF6401B-70I/TV, and which memory region does it protect?
On SST38VF6401B-70I/TV, the WP# pin is an active-low hardware write protect input that locks the top boot block (B0) - the first 32 KWord (64 KB) - against accidental Program or Erase operations when pulled to ground. This protection is independent of software commands and remains active even during power transitions, making it critical for safeguarding bootloader code in mission-critical systems.
What is the purpose of the RY/BY# pin on SST38VF6401B-70I/TV, and how is it used in system design?
The RY/BY# pin on SST38VF6401B-70I/TV is an open-drain Ready/Busy indicator that goes low during internal Program or Erase operations. It enables hardware handshaking to eliminate software polling overhead - systems can use this signal to gate interrupts or stall bus cycles until the flash operation completes. Its timing aligns with JEDEC-standard tREADY specifications, ensuring seamless integration with legacy memory controllers.
Can SST38VF6401B-70I/TV be used in place of older SST39VF6401B devices?
SST38VF6401B-70I/TV is pin-compatible and electrically compatible with SST39VF6401B-70I/TV in 48-lead TSOP packages, sharing identical pinout, voltage ranges, and command sets. However, SST39VF6401B adds irreversible block locking and extended CFI descriptors - so SST38VF6401B-70I/TV serves as a functional substitute where those advanced security features are not required.
SST38VF6401B-70I/TV 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:
- 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-TSOP
SST38VF6401B-70I/TV FAQ
1.How can I place an order for SST38VF6401B-70I/TV through Aetrix?
Please submit a Request for Quotation (RFQ) for SST38VF6401B-70I/TV 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-70I/TV reliable?
The price and inventory of SST38VF6401B-70I/TV are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SST38VF6401B-70I/TV is usually 5 days.
3.What payment methods are accepted for SST38VF6401B-70I/TV?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST38VF6401B-70I/TV transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST38VF6401B-70I/TV?
SST38VF6401B-70I/TV orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST38VF6401B-70I/TV 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-70I/TV?
For technical support, including SST38VF6401B-70I/TV datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST38VF6401B-70I/TV requirements.
6.How does Aetrix verify that SST38VF6401B-70I/TV is sourced from the original manufacturer or authorized distributors?
All SST38VF6401B-70I/TV 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-70I/TV meets industry standards.
7.What is the process for return or replacement of SST38VF6401B-70I/TV?
All SST38VF6401B-70I/TV units undergo pre-shipment inspection (PSI). If there is an issue with SST38VF6401B-70I/TV, 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-70I/TV part is unused and in its original packaging.
Return procedure for SST38VF6401B-70I/TV:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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