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Microchip Technology SST38VF6402B-70-5I-B3KE
- Part No.:
- SST38VF6402B-70-5I-B3KE
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-TFBGA
- Datasheet:
-
SST38VF6402B-70-5I-B3KE.pdf
- Description:
- IC FLASH 64MBIT PARALLEL 48TFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,570
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Product details
Overview
SST38VF6402B-70-5I-B3KE from Microchip Technology is a 64 Mbit (4M × 16) Advanced Multi-Purpose Flash Plus memory IC designed for nonvolatile program, configuration, and data storage in embedded systems. It operates from a single 2.7–3.6 V supply, delivers 70 ns read access time, supports 100,000 program/erase cycles, and retains data for >100 years - enabling reliable boot code and firmware storage in industrial controllers and network edge devices.
For engineers reviewing the SST38VF6402B-70-5I-B3KE datasheet, SST38VF6402B-70-5I-B3KE pinout, SST38VF6402B-70-5I-B3KE application, or SST38VF6402B-70-5I-B3KE equivalent, key selection considerations include its uniform 32 KWord block architecture, hardware boot-block protection (top-boot), RY/BY# status signaling, and compatibility with JEDEC-standard x16 flash command sets and timing.
Technical Context
The SST38VF6402B-70-5I-B3KE implements SuperFlash technology with split-gate cells and thick-oxide tunneling injectors to achieve fixed erase/program times independent of wear - unlike conventional flash where timing degrades over cycles. Its architecture supports both standard word-program (7 µs typical) and accelerated write-buffer programming (1.75 µs/word, 16-word buffer).
It features dual status detection (DQ6 toggle bit + DQ7 data# polling), hardware reset (RST#), write protect (WP#), and erase-suspend/resume capability - allowing concurrent read access during background block erasure. The device conforms to JEDEC pinouts and CFI standards, ensuring interoperability with legacy x16 memory controllers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 64 Mbit (4M × 16 organization), providing 8 MB of addressable nonvolatile storage |
| Read Access Time | 70 ns max - determines minimum instruction fetch latency in CPU boot sequences |
| Page Read Speed | 25 ns per word (8-word page) - enables burst reads for firmware execution acceleration |
| Endurance | 100,000 program/erase cycles - supports field firmware updates over full product lifecycle |
| Data Retention | >100 years at 25°C - ensures long-term reliability without refresh in unpowered storage |
| Supply Voltage | 2.7–3.6 V single supply - compatible with 3.3 V system rails and eliminates need for charge pumps |
| Active Current | 25 mA typical at 5 MHz - defines peak power draw during sequential read operations |
| Standby Current | 5 µA typical - enables ultra-low-power retention in battery-backed or energy-harvested systems |
Pinout & Package
Package: 48-ball TFBGA (10 mm × 11 mm, 0.8 mm pitch) and 48-lead TSOP (12 mm × 20 mm), both RoHS-compliant and lead-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A21 | Address Inputs | 22-bit address bus supporting full 4M-word addressing; A21–A15 select block during erase |
| DQ0–DQ15 | Data I/O | 16-bit bidirectional data bus with internal latching; tri-stated when CE# or OE# high |
| CE# | Chip Enable | Active-low chip select; device enters standby (5 µA) when high |
| OE# | Output Enable | Active-low output gate; controls data bus drive during read cycles only |
| WE# | Write Enable | Active-low control for all write/erase command latching and timing initiation |
| WP# | Write Protect | Hardware boot-block lock: grounded to protect top boot block (B127) from accidental erase/program |
| RST# | Reset | Active-low hardware reset that forces device into read mode, clearing pending operations |
| RY/BY# | Ready/Busy | Open-drain status indicator: low during active program/erase, high when ready |
| VDD / VSS | Power / Ground | Single 2.7–3.6 V supply; decoupling required per JEDEC layout guidelines |
| NC | No Connect | Unbonded ball/pin - must be left floating or tied to VSS per board design rules |
Key Features
| Feature | Design Value |
|---|---|
| Erase-Suspend/Resume | Allows real-time read access to non-erasing blocks during background 18 ms block erase - critical for deterministic interrupt response in RTOS environments |
| Write Buffer (16-word) | Reduces effective programming time by 75% vs. single-word writes - accelerates firmware patch deployment in field-upgradable devices |
| Uniform 32 KWord Blocks | All 128 blocks (B0–B127) are identically sized - simplifies memory management software and avoids fragmentation in bootloader partitioning |
| Top-Boot Block Protection | Hardware-enforced lock on B127 (top 32 KWord) via WP# pin - prevents corruption of primary boot code during system updates |
| CFI Compliance | Enables automatic parameter discovery by host BIOS/bootloader - eliminates hard-coded timing or geometry assumptions |
| 128-bit Unique ID | Factory-programmed serial number accessible via command sequence - supports secure device authentication and license binding |
Applications
| Industrial PLC Firmware Storage | Network Router Boot Memory |
|---|---|
Use Scenario: Storing and updating ladder logic firmware in programmable logic controllers operating in harsh temperature environments (-40°C to +85°C). IC Role / Device Role / Timing Role: Nonvolatile boot and application code storage with deterministic 70 ns read access for fast startup and real-time task loading. Use Value: 100,000-cycle endurance and >100-year data retention ensure firmware integrity across 15+ year deployments without replacement. | Use Scenario: Holding bootloader, OS kernel, and configuration images in enterprise-grade Ethernet routers requiring secure, field-upgradable storage. IC Role / Device Role / Timing Role: JEDEC-compliant x16 interface provides direct connection to MIPS/ARM SoC memory controllers with no glue logic. Use Value: Write-buffer programming cuts firmware update time by 4× versus discrete word writes - reducing downtime during maintenance windows. |
| Medical Diagnostic Equipment BIOS | Automotive ADAS Camera Module |
Use Scenario: Storing safety-critical boot firmware and calibration tables in FDA-regulated imaging systems with strict traceability requirements. IC Role / Device Role / Timing Role: Hardware WP#-protected top boot block (B127) isolates immutable bootloader from application-level updates. Use Value: 128-bit unique ID enables per-unit cryptographic binding of firmware signatures - satisfying IEC 62304 traceability mandates. | Use Scenario: Providing compact, shock-resistant firmware storage for vision processing modules mounted near vehicle bumpers. IC Role / Device Role / Timing Role: TFBGA package (10 mm × 11 mm) meets space-constrained PCB layouts while maintaining AEC-Q100-relevant reliability. Use Value: Erase-suspend capability allows uninterrupted image capture during background firmware validation - eliminating frame drops during OTA updates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar nonvolatile x16 flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SST38VF6401B-70-5I-B3KE | Bottom-boot configuration (B0 protected); identical timing, endurance, and voltage specs | Requires software reconfiguration of boot vector mapping; suitable when legacy bootloader expects bottom-boot layout | Select when existing hardware design uses bottom-boot addressing or requires backward compatibility with SST38VF6401B-based platforms |
| MX29LV640ETTI-70G | 70 ns access, 64 Mbit x16, but uses different command set (AMD/Fujitsu) and lacks write-buffer programming | No native erase-suspend; requires external polling logic for status monitoring; no 128-bit UID | Choose only if AMD-compatible command set is mandated and write-buffer acceleration is not required |
Compared with SST38VF6401B-70-5I-B3KE, the SST38VF6402B-70-5I-B3KE provides top-boot protection aligned with modern bootloader architectures, while MX29LV640ETTI-70G sacrifices advanced features like write buffering and suspend/resume for broader legacy controller support - making SST38VF6402B-70-5I-B3KE optimal for new designs prioritizing update speed and real-time responsiveness.
Availability
SST38VF6402B-70-5I-B3KE is available at Aetrix Electronics and suitable for industrial PLCs, network infrastructure equipment, medical imaging systems, and automotive ADAS modules requiring stable component supply across multi-year production cycles.
Supply support for SST38VF6402B-70-5I-B3KE 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 leader in microcontrollers, analog, FPGA, and memory solutions, delivering scalable, secure, and energy-efficient semiconductor products for embedded control and connectivity.
The SST38VF6402B-70-5I-B3KE belongs to Microchip's Advanced MPF+ Flash family, engineered specifically for high-reliability, low-voltage embedded applications demanding fast, predictable firmware updates and long-term data integrity in constrained environments.
FAQ
What boot-block configuration does the SST38VF6402B-70-5I-B3KE use?
The SST38VF6402B-70-5I-B3KE implements top-boot block protection, where the highest-addressed 32 KWord block (B127, addresses 0x7F8000–0x7FFFFF) is hardware-protected when WP# is grounded. This differs from the bottom-boot SST38VF6401B variant and aligns with modern bootloader placement conventions that load from upper memory.
Does the SST38VF6402B-70-5I-B3KE support simultaneous read and erase operations?
Yes - the SST38VF6402B-70-5I-B3KE supports erase-suspend/resume functionality. When an active block-erase is suspended using the B0H command, the device enters read mode within 20 µs, allowing valid data reads from any non-erasing block. This enables deterministic interrupt handling during firmware updates without halting real-time tasks.
What is the purpose of the RY/BY# pin on the SST38VF6402B-70-5I-B3KE?
The RY/BY# pin on the SST38VF6402B-70-5I-B3KE is an open-drain ready/busy status indicator. It asserts low during internal program or erase operations and returns high when complete. Unlike polling DQ6/DQ7, RY/BY# provides hardware-level synchronization for DMA controllers or interrupt-driven firmware, eliminating software overhead in timing-critical applications.
Can the SST38VF6402B-70-5I-B3KE be used with a 3.3 V-only system without level shifting?
Yes - the SST38VF6402B-70-5I-B3KE operates natively from 2.7 V to 3.6 V and is fully CMOS I/O compatible. Its inputs meet 3.3 V logic thresholds (VIH ≥ 2.0 V, VIL ≤ 0.8 V), and outputs drive full rail-to-rail levels, enabling direct interface with 3.3 V microcontrollers, FPGAs, and SoCs without external level translators.
How does the write-buffer feature improve programming efficiency in the SST38VF6402B-70-5I-B3KE?
The SST38VF6402B-70-5I-B3KE's 16-word write buffer reduces average programming time to 1.75 µs per word - a 4× improvement over standard 7 µs word-program operations. By loading up to 16 words into the buffer before committing to flash, it minimizes command overhead and bus arbitration delays, accelerating field firmware updates and configuration writes in bandwidth-limited systems.
SST38VF6402B-70-5I-B3KE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- SST38
- Package/Case:
- 48-TFBGA
- Packaging:
- Tray
- 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TFBGA (6x8)
SST38VF6402B-70-5I-B3KE FAQ
1.How can I place an order for SST38VF6402B-70-5I-B3KE through Aetrix?
Please submit a Request for Quotation (RFQ) for SST38VF6402B-70-5I-B3KE 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 SST38VF6402B-70-5I-B3KE reliable?
The price and inventory of SST38VF6402B-70-5I-B3KE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SST38VF6402B-70-5I-B3KE is usually 5 days.
3.What payment methods are accepted for SST38VF6402B-70-5I-B3KE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST38VF6402B-70-5I-B3KE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST38VF6402B-70-5I-B3KE?
SST38VF6402B-70-5I-B3KE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST38VF6402B-70-5I-B3KE 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 SST38VF6402B-70-5I-B3KE?
For technical support, including SST38VF6402B-70-5I-B3KE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST38VF6402B-70-5I-B3KE requirements.
6.How does Aetrix verify that SST38VF6402B-70-5I-B3KE is sourced from the original manufacturer or authorized distributors?
All SST38VF6402B-70-5I-B3KE 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 SST38VF6402B-70-5I-B3KE meets industry standards.
7.What is the process for return or replacement of SST38VF6402B-70-5I-B3KE?
All SST38VF6402B-70-5I-B3KE units undergo pre-shipment inspection (PSI). If there is an issue with SST38VF6402B-70-5I-B3KE, 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 SST38VF6402B-70-5I-B3KE part is unused and in its original packaging.
Return procedure for SST38VF6402B-70-5I-B3KE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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