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Microchip Technology SST38VF6402B-70I/CD
- Part No.:
- SST38VF6402B-70I/CD
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-TFBGA
- Datasheet:
-
SST38VF6402B-70I/CD.pdf
- Description:
- IC FLASH 64MBIT PARALLEL 48TFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:149
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Product details
Overview
SST38VF6402B-70I/CD from Microchip Technology is a 64 Mbit (4M x16) CMOS Advanced Multi-Purpose Flash Plus memory IC, organized as 4 million 16-bit words, operating from a single 2.7–3.6V supply. It delivers 70 ns read access time, 25 ns page read access, and supports hardware boot block protection with WP# pin-used in embedded firmware storage, BIOS/UEFI code retention, and industrial controller program memory.
For engineers reviewing the SST38VF6402B-70I/CD datasheet, SST38VF6402B-70I/CD pinout, SST38VF6402B-70I/CD application, or SST38VF6402B-70I/CD equivalent, key selection criteria include boot block configuration (top vs. bottom), uniform 32 KWord erase granularity, 128-bit unique ID for device authentication, and compatibility with JEDEC-standard x16 flash command sets and CFI.
Technical Context
The SST38VF6402B-70I/CD implements SuperFlash split-gate cell technology with thick-oxide tunneling injector, enabling fixed erase/program times independent of cycle count. Its architecture supports both standard Word-Program (7 μs typical) and Write-Buffer Programming (1.75 μs/word typical) with a 16-word buffer.
It features dual status detection (DQ6 toggle bit, DQ7 data# polling) plus RY/BY# output for real-time operation monitoring, and integrates hardware reset (RST#), write protect (WP#), and auto low-power mode (5 μA standby) for robust system-level integration in resource-constrained environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 4M x16 (64 Mbit); enables 16-bit parallel data bus interface with full addressability up to A21. |
| Read Access Time | 70 ns; determines minimum clock-to-data timing for synchronous microprocessor interfaces. |
| Page Read Access | 25 ns per word (8-word page); reduces average latency when fetching consecutive instructions or data blocks. |
| Endurance | 100,000 program/erase cycles; ensures long-term reliability in field-updatable firmware applications. |
| Data Retention | Greater than 100 years; guarantees nonvolatile storage integrity without refresh in powered-off systems. |
| Supply Voltage | 2.7–3.6 V; compatible with modern low-voltage 3.3V logic domains and eliminates need for level shifters. |
| Active Current | 25 mA typical at 5 MHz; defines peak power draw during sustained read operations. |
Pinout & Package
Package: 48-lead TSOP (Thin Small Outline Package) - surface-mount, JEDEC-standard footprint with 0.5 mm lead pitch, suitable for high-density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A21 | Address Inputs | 22-bit address bus supporting full 4M-word addressing; AMS = A21 for block selection 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; enables device for read/write when low; places device in standby when high. |
| OE# | Output Enable | Active-low output gate; controls data bus drive without affecting internal state or power mode. |
| WE# | Write Enable | Controls write strobe timing; latches address/data on falling/rising edges per JEDEC command protocol. |
| WP# | Write Protect | Hardware boot block lock; grounded to protect top boot block (B127) from accidental erase/program. |
| RST# | Reset | Hardware reset input; returns device to read mode and clears internal command states. |
| RY/BY# | Ready/Busy | Open-drain status output; low during active program/erase; used for hardware flow control. |
| VDD | Power Supply | 2.7–3.6 V core and I/O supply; decoupling required per layout guidelines. |
| VSS | Ground | Reference ground for all signals and power; requires low-impedance PCB connection. |
| NC | No Connection | Unbonded pin; must remain unconnected on PCB to avoid signal integrity issues. |
Key Features
| Feature | Design Value |
|---|---|
| Boot Block Protection | Top-boot configuration (B127 protected via WP#); prevents corruption of critical startup code during field updates. |
| 128-bit Unique ID | Factory-programmed serial number; enables secure device identification and firmware binding in multi-unit deployments. |
| Erase-Suspend/Resume | Allows temporary interruption of block erase to service read/program requests elsewhere-critical for real-time OS coexistence. |
| Auto Low Power Mode | Enters 5 μA standby after valid read access; eliminates software-controlled power management overhead. |
| CFI Compliance | Supports Common Flash Interface standard; enables automatic parameter discovery and vendor-agnostic driver support. |
Applications
| Industrial PLC Firmware Storage | Medical Device Boot Code Retention |
|---|---|
Use Scenario: Storing and updating ladder logic firmware in programmable logic controllers deployed in factory automation environments with wide temperature ranges. IC Role / Device Role / Timing Role: Nonvolatile program memory holding executable code executed directly from flash (XIP) or copied to RAM at boot. Use Value: 100,000-cycle endurance and >100-year data retention ensure reliable operation over 15+ year product lifecycles without maintenance. | Use Scenario: Securing boot loader and diagnostic firmware in FDA-cleared portable infusion pumps requiring tamper-resistant code storage. IC Role / Device Role / Timing Role: Trusted execution root-of-trust memory with 128-bit unique ID and password-protected block locking. Use Value: Hardware WP# and individual block software protection prevent unauthorized firmware modification during servicing or field updates. |
| Automotive Infotainment System BIOS | Networking Equipment Configuration Memory |
Use Scenario: Holding UEFI-compatible BIOS image in automotive head units subject to AEC-Q100 Grade 3 temperature cycling and ESD stress. IC Role / Device Role / Timing Role: Primary boot memory accessed during cold start; supports fast 25 ns page reads for rapid initialization sequences. Use Value: 70 ns read access and JEDEC-compliant pinout ensure drop-in compatibility with legacy 3.3V flash-based designs. | Use Scenario: Storing VLAN, QoS, and routing table configurations in managed Ethernet switches requiring frequent rewrites during provisioning. IC Role / Device Role / Timing Role: Field-updatable configuration store leveraging Write-Buffer Programming (1.75 μs/word) for sub-30 ms save operations. Use Value: Uniform 32 KWord erase blocks and erase-suspend capability allow concurrent config updates and packet processing without service interruption. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SST39VF6402B-70I/CD | Same 4M x16 organization and SuperFlash tech, but uses different command set and lacks CFI compliance. | Not suitable where automatic parameter discovery or standardized flash drivers are required. | Select only if legacy SST39-series firmware and toolchain compatibility is mandatory. |
| MX29LV640EBTI-70G | 64 Mbit x16, 70 ns access, but uses traditional floating-gate architecture with higher program current and cycle-dependent timing. | Lower endurance (100K vs. 100K same, but degrades faster), no auto low-power mode, no 128-bit ID. | Choose when cost sensitivity outweighs long-term reliability and advanced power features. |
Compared with SST38VF6402B-70I/CD, SST39VF6402B-70I/CD requires firmware adaptation due to non-CFI command structure, while MX29LV640EBTI-70G lacks hardware reset and unique ID-making SST38VF6402B-70I/CD preferable for secure, long-lifecycle, and power-aware designs.
Availability
SST38VF6402B-70I/CD is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device boot code retention, and automotive infotainment BIOS requiring stable component supply across extended production lifecycles.
Supply support for SST38VF6402B-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 emphasis on reliability, longevity, and industrial-grade qualification.
The SST38VF6402B-70I/CD belongs to Microchip's Advanced MPF+ Flash family, designed specifically for embedded systems needing high endurance, low-power operation, and secure firmware storage in harsh environments.
FAQ
What is the boot block configuration of the SST38VF6402B-70I/CD?
The SST38VF6402B-70I/CD implements a top-boot configuration: the highest-addressed block (B127, 32 KWord) serves as the protected boot block. When WP# is grounded, this block is hardware-locked against erase and program operations-ensuring bootloader integrity during system updates. This differs from SST38VF6401B, which uses bottom-boot (B0).
Does the SST38VF6402B-70I/CD support CFI and JEDEC standards?
Yes, the SST38VF6402B-70I/CD is fully CFI (Common Flash Interface) compliant and conforms to JEDEC standard pinouts and command sets for x16 memories. This enables automatic parameter detection by host systems and ensures interoperability with industry-standard flash programming tools and drivers without custom configuration.
What is the purpose of the RY/BY# pin on the SST38VF6402B-70I/CD?
The RY/BY# (Ready/Busy) pin on the SST38VF6402B-70I/CD is an open-drain output that goes low during active program or erase operations and returns high upon completion. It provides hardware-level flow control, allowing the host processor to pause other tasks until the flash operation finishes-eliminating the need for continuous software polling of status bits like DQ6 or DQ7.
How does the Auto Low Power mode function in the SST38VF6402B-70I/CD?
The SST38VF6402B-70I/CD enters Auto Low Power mode automatically after a valid read access, reducing active current from 25 mA to 5 μA. It exits instantly (<100 ns) on any address or control signal transition-no wake-up delay or command sequence required. This feature cuts dynamic power in intermittently accessed firmware storage without software intervention.
Can the SST38VF6402B-70I/CD be used in place of SST38VF6401B-70I/CD?
No-SST38VF6402B-70I/CD and SST38VF6401B-70I/CD differ in boot block location (top vs. bottom) and associated protection mapping. While pinout and electrical specs match, firmware relying on B0 protection will fail on SST38VF6402B-70I/CD, and vice versa. They are not drop-in replacements; board-level validation and firmware update are required for substitution.
SST38VF6402B-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)
SST38VF6402B-70I/CD FAQ
1.How can I place an order for SST38VF6402B-70I/CD through Aetrix?
Please submit a Request for Quotation (RFQ) for SST38VF6402B-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 SST38VF6402B-70I/CD reliable?
The price and inventory of SST38VF6402B-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 SST38VF6402B-70I/CD is usually 5 days.
3.What payment methods are accepted for SST38VF6402B-70I/CD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST38VF6402B-70I/CD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST38VF6402B-70I/CD?
SST38VF6402B-70I/CD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST38VF6402B-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 SST38VF6402B-70I/CD?
For technical support, including SST38VF6402B-70I/CD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST38VF6402B-70I/CD requirements.
6.How does Aetrix verify that SST38VF6402B-70I/CD is sourced from the original manufacturer or authorized distributors?
All SST38VF6402B-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 SST38VF6402B-70I/CD meets industry standards.
7.What is the process for return or replacement of SST38VF6402B-70I/CD?
All SST38VF6402B-70I/CD units undergo pre-shipment inspection (PSI). If there is an issue with SST38VF6402B-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 SST38VF6402B-70I/CD part is unused and in its original packaging.
Return procedure for SST38VF6402B-70I/CD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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