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Microchip Technology SST38VF6403B-70I/CD
- Part No.:
- SST38VF6403B-70I/CD
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-TFBGA
- Datasheet:
-
SST38VF6403B-70I/CD.pdf
- Description:
- IC FLASH 64MBIT PARALLEL 48TFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:480
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Product details
Overview
SST38VF6403B-70I/CD 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 at 2.7–3.6 V, delivers 70 ns read access time, supports 100,000 erase/write cycles, and retains data >100 years - enabling reliable firmware updates in industrial controllers and network boot loaders.
For engineers reviewing the SST38VF6403B-70I/CD datasheet, SST38VF6403B-70I/CD pinout, SST38VF6403B-70I/CD application, or SST38VF6403B-70I/CD equivalent, key selection criteria include its 4KWord/32KWord non-uniform boot block architecture, Write-Buffer Programming (1.75 μs/word), Erase-Suspend capability, and TSOP/TTFBGA package compatibility with JEDEC x16 flash interfaces.
Technical Context
The SST38VF6403B-70I/CD implements Microchip's SuperFlash split-gate cell technology, delivering fixed erase/program times independent of cycle count - unlike conventional NOR flash. Its dual-block protection scheme combines hardware WP#-controlled boot block lock with software-configurable individual 32KWord block protection and 248-word OTP Security-ID space.
It supports three concurrent operational modes: standard Word-Program (7 μs), accelerated Write-Buffer Programming (16-word buffer, 1.75 μs/word), and Page Read (25 ns access, 8-word page). Status detection uses DQ7 Data# Polling, DQ6/DQ2 Toggle Bits, and RY/BY# output - all compliant with JEDEC-standard command sets and CFI.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 4M × 16 (64 Mbit); enables 16-bit parallel interface with 22-bit address bus (A0–A21) |
| Read Access Time | 70 ns (max); ensures deterministic timing for real-time boot code fetch in microcontroller host systems |
| Page Read Speed | 25 ns per word (8-word page); reduces sequential instruction fetch latency by >2× vs. standard read |
| Write-Buffer Capacity | 16-word buffer; allows burst programming of up to 16 words with single command overhead, improving firmware update throughput |
| Endurance & Retention | 100,000 cycles minimum / >100 years data retention; validated for long-life deployment in unattended industrial equipment |
| Supply Voltage | 2.7–3.6 V single supply; compatible with 3.3 V logic domains without level-shifting in embedded SoC designs |
| Block Erase Time | 18 ms typical (32KWord blocks); enables fast field firmware patching with predictable erase scheduling |
| Security Features | 128-bit Unique ID + 248-word OTP Security-ID + hardware WP# + volatile/non-volatile block protection; meets basic secure boot credential storage requirements |
Pinout & Package
Package: 48-lead TSOP (Type I, standard pinout, die-up) and 48-ball TFBGA - both RoHS-compliant, lead-free, and JEDEC-standard x16 flash footprints.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A21 | Address Inputs | 22-bit address bus; A21–A15 select 32KWord blocks, A2–A0 toggle within 8-word Page Read pages |
| DQ0–DQ15 | Data I/O | 16-bit bidirectional data bus; latched internally during write; tri-stated when CE# or OE# high |
| CE# | Chip Enable | Active-low chip select; device enters standby (5 μA) when high; required low for all operations |
| OE# | Output Enable | Active-low output gate; controls data bus drive; must be low with CE# for valid read/Page Read |
| WE# | Write Enable | Active-low control for write/erase command latching; rising edge initiates internal Program/Erase |
| WP# | Write Protect | Hardware boot block lock; grounded to protect top/bottom 4KWord boot sectors from accidental erase/program |
| RST# | Reset | Active-low hardware reset; forces device into Read mode, clears abort states (e.g., DQ1=1) |
| RY/BY# | Ready/Busy | Open-drain status indicator; low during Program/Erase; used for hardware flow control without polling |
| VDD, VSS | Power/Ground | Single 2.7–3.6 V supply; decoupling required per JEDEC layout guidelines for noise immunity |
| NC | No Connection | Unbonded pins (e.g., TSOP Pin 26, TFBGA B6); must remain floating per datasheet |
Key Features
| Feature | Design Value |
|---|---|
| Erase-Suspend/-Resume | Allows interrupting 18 ms block erase to read/program other blocks - critical for real-time systems requiring background firmware updates |
| Auto Low Power Mode | Reduces active read current from 25 mA to 5 μA after valid access; eliminates need for external power gating in battery-backed applications |
| Uniform + Non-Uniform Block Architecture | Boot region comprises eight 4KWord sub-blocks (B0–B7), while main array uses 32KWord blocks - enables fine-grained protection for boot code and coarse updates for application firmware |
| CFI Compliance | Enables automatic identification and configuration by standard flash programming tools and BIOS/UEFI firmware without vendor-specific drivers |
| Toggle Bit & Data# Polling | Dual software status detection (DQ6/DQ7) provides robust, clock-independent write completion signaling - avoids timing margin risks in high-speed host interfaces |
| Internal VPP Generation | Eliminates need for external high-voltage charge pump; simplifies PCB design and reduces BOM cost in space-constrained embedded modules |
Applications
| Industrial PLC Firmware Storage | Network Router Boot Memory |
|---|---|
|
Use Scenario: Storing and updating ladder logic firmware in programmable logic controllers operating in harsh factory environments with wide temperature swings and EMI. IC Role / Device Role / Timing Role: Nonvolatile code storage with guaranteed 70 ns read access and >100-year data retention; serves as primary boot source for ARM Cortex-M7 host MCU. Use Value: Hardware WP# and individual block protection prevent corruption during brown-out events or partial power loss during field firmware upgrades. |
Use Scenario: Holding bootloader and configuration images in enterprise-grade Ethernet switches requiring secure, field-upgradable firmware with rollback capability. IC Role / Device Role / Timing Role: Dual-boot image storage using non-uniform 4KWord boot blocks; enables atomic swap between active/inactive firmware partitions. Use Value: Erase-Suspend allows concurrent packet processing during background firmware validation and installation - zero downtime during maintenance windows. |
| Medical Device Configuration Memory | Automotive Infotainment Head Unit |
|
Use Scenario: Storing calibration parameters, user preferences, and regulatory compliance logs in Class II medical imaging equipment with strict data integrity requirements. IC Role / Device Role / Timing Role: Secure parameter storage using 248-word OTP Security-ID and password-protected software block locking - meets IEC 62304 traceability mandates. Use Value: 100,000-cycle endurance supports daily recalibration over 10+ year product lifetime without wear leveling firmware overhead. |
Use Scenario: Hosting navigation map data and UI assets in automotive infotainment systems requiring fast random access and partial updates over CAN FD. IC Role / Device Role / Timing Role: High-throughput data storage leveraging Page Read (25 ns) and Write-Buffer Programming (1.75 μs/word) to minimize OTA update time. Use Value: Fixed 18 ms block erase time - independent of accumulated cycles - guarantees consistent update scheduling across vehicle lifetime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NOR flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SST38VF6401B-70I/CD | Uniform 32KWord block architecture (no 4KWord boot sub-blocks); boot block occupies full B0 (32KWord) | Suited for legacy designs where boot code size exceeds 4KWord and uniform block management simplifies firmware partitioning | Select when boot region requires >4KWord capacity and non-uniform protection is unnecessary |
| MX29LV640ETTI-70G | 64 Mbit x16, 70 ns access, but lacks Erase-Suspend, Write-Buffer, and 128-bit UID; uses different command set | Compatible with basic boot loader storage but cannot support real-time background updates or secure credential storage | Choose only if cost sensitivity outweighs need for suspend/resume, security features, and accelerated programming |
Compared with SST38VF6401B-70I/CD and MX29LV640ETTI-70G, the SST38VF6403B-70I/CD uniquely combines non-uniform boot block granularity, Erase-Suspend, and 1.75 μs/word Write-Buffer - making it optimal for safety-critical or field-upgradable systems requiring deterministic timing and enhanced data integrity.
Availability
SST38VF6403B-70I/CD is available at Aetrix Electronics and suitable for industrial PLC firmware storage, network router boot memory, medical device configuration, and automotive infotainment head units requiring stable component supply across extended product lifecycles.
Supply support for SST38VF6403B-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 global semiconductor company specializing in microcontrollers, analog devices, and memory solutions, with a focus on reliability, low-power operation, and long-term product availability for industrial and automotive markets.
The SST38VF6403B belongs to Microchip's Advanced Multi-Purpose Flash Plus (MPF+) family, engineered for embedded systems demanding high endurance, fast programming, and flexible memory protection - particularly in firmware-upgradable equipment.
FAQ
What is the boot block configuration of SST38VF6403B-70I/CD?
The SST38VF6403B-70I/CD features a non-uniform boot block comprising eight 4KWord sub-blocks (B0–B7) at the lowest address range, distinct from uniform 32KWord blocks elsewhere. This allows granular protection of critical boot code while enabling larger firmware updates in main array blocks - a key differentiator from SST38VF6401B-70I/CD.
Does SST38VF6403B-70I/CD support hardware reset recovery?
Yes, SST38VF6403B-70I/CD includes an active-low RST# pin that forces the device into Read mode and clears internal abort states (e.g., DQ1=1 after Write-Buffer failure). This provides deterministic recovery from power glitches or command errors without requiring full power cycling - essential for mission-critical embedded systems.
How does Write-Buffer Programming improve firmware update speed in SST38VF6403B-70I/CD?
SST38VF6403B-70I/CD's 16-word Write-Buffer reduces effective programming time to 1.75 μs per word versus 7 μs for standard Word-Program. By loading up to 16 words before initiating flash commit, it cuts command overhead by ~85%, accelerating field firmware patches and reducing host CPU intervention during updates.
Can SST38VF6403B-70I/CD be used in systems requiring secure boot credentials?
Yes, SST38VF6403B-70I/CD integrates a 128-bit Unique ID and 248-word One-Time-Programmable (OTP) Security-ID space, plus password-protected software block locking. These features enable binding of cryptographic keys or device-specific secrets to hardware - supporting secure boot chain-of-trust implementations without external secure elements.
What package options are available for SST38VF6403B-70I/CD?
SST38VF6403B-70I/CD is offered in two RoHS-compliant, lead-free packages: 48-lead TSOP (Type I, standard pinout) and 48-ball TFBGA. Both adhere to JEDEC-standard x16 flash footprints, enabling drop-in compatibility with existing board layouts designed for pin-compatible NOR flash devices.
SST38VF6403B-70I/CD 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:
- 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)
SST38VF6403B-70I/CD FAQ
1.How can I place an order for SST38VF6403B-70I/CD through Aetrix?
Please submit a Request for Quotation (RFQ) for SST38VF6403B-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 SST38VF6403B-70I/CD reliable?
The price and inventory of SST38VF6403B-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 SST38VF6403B-70I/CD is usually 5 days.
3.What payment methods are accepted for SST38VF6403B-70I/CD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST38VF6403B-70I/CD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST38VF6403B-70I/CD?
SST38VF6403B-70I/CD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST38VF6403B-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 SST38VF6403B-70I/CD?
For technical support, including SST38VF6403B-70I/CD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST38VF6403B-70I/CD requirements.
6.How does Aetrix verify that SST38VF6403B-70I/CD is sourced from the original manufacturer or authorized distributors?
All SST38VF6403B-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 SST38VF6403B-70I/CD meets industry standards.
7.What is the process for return or replacement of SST38VF6403B-70I/CD?
All SST38VF6403B-70I/CD units undergo pre-shipment inspection (PSI). If there is an issue with SST38VF6403B-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 SST38VF6403B-70I/CD part is unused and in its original packaging.
Return procedure for SST38VF6403B-70I/CD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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