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Microchip Technology SST39VF3201B-70-4I-EKE
- Part No.:
- SST39VF3201B-70-4I-EKE
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
SST39VF3201B-70-4I-EKE.pdf
- Description:
- IC FLASH 32MBIT PARALLEL 48TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:955
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Product details
Overview
SST39VF3201B-70-4I-EKE from Microchip Technology is a 32 Mbit (2M × 16) CMOS Multi-Purpose Flash Plus memory IC with bottom-block hardware write protection, 70 ns read access time, and single 2.7–3.6 V supply operation. It delivers 100,000 program/erase cycles endurance and >100 years data retention, used for firmware storage in industrial microcontroller systems requiring reliable nonvolatile code execution.
For engineers reviewing the SST39VF3201B-70-4I-EKE datasheet, SST39VF3201B-70-4I-EKE pinout, SST39VF3201B-70-4I-EKE application, or SST39VF3201B-70-4I-EKE equivalent, key selection considerations include bottom-boot block protection (000000H–007FFFH), TSOP-48 packaging, JEDEC x16 asynchronous interface compliance, and SuperFlash technology's fixed erase/program timing independent of wear.
Technical Context
The SST39VF3201B-70-4I-EKE implements SST's proprietary SuperFlash split-gate cell architecture with thick-oxide tunneling injector, enabling high reliability and consistent 18 ms sector/block-erase and 7 µs word-program times across its full endurance life. Its command-set-driven operation uses standard microprocessor bus cycles with six-byte sequences for erase and three-byte sequences for program initiation.
Hardware protection is implemented via dedicated WP# pin enabling bottom 32 KWord block lock (000000H–007FFFH), while RST# provides hardware reset to read mode. Status detection relies on DQ7 Data# Polling and DQ6/DQ2 Toggle Bits - no external VPP required due to internal charge pump generation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 32 Mbit (2,097,152 × 16-bit words); supports full firmware image storage for mid-complexity embedded controllers. |
| Read Access Time | 70 ns maximum; enables direct execution (XIP) from flash at up to ~14 MHz system bus clock without wait states. |
| Supply Voltage | 2.7–3.6 V single supply; compatible with 3.3 V logic domains and eliminates need for separate VPP programming voltage. |
| Endurance | 100,000 program/erase cycles typical; sufficient for field firmware updates over 10+ years in industrial control applications. |
| Data Retention | Greater than 100 years at +85°C; ensures long-term integrity of boot code and calibration data in unpowered storage. |
| Block Protection | Bottom 32 KWord (256 KB) hardware-protected via WP# pin; prevents accidental overwrite of bootloader region during application updates. |
| Erase Granularity | Uniform 2 KWord sectors (4 KB) and 32 KWord blocks (256 KB); allows fine-grained firmware patching and bulk reprogramming flexibility. |
Pinout & Package
Package: 48-lead TSOP (12 mm × 20 mm), RoHS-compliant, lead-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A20 | Address Inputs | 21-bit address bus; A20 is AMS (most significant address); selects word location or sector/block during erase commands. |
| DQ0–DQ15 | Data I/O | 16-bit bidirectional data bus; latched internally during writes; tri-stated when CE# or OE# is high. |
| CE# | Chip Enable | Active-low chip select; device enters standby (4 µA) when high; required low for all read/write operations. |
| OE# | Output Enable | Active-low output gate; controls data bus drive; must be low with CE# for valid read data. |
| WE# | Write Enable | Active-low write strobe; latches address/data on falling/rising edges per JEDEC x16 timing; initiates internal program/erase. |
| WP# | Write Protect | Active-low hardware lock for bottom 32 KWord boot block (000000H–007FFFH); grounded to prevent inadvertent erase/program. |
| RST# | Reset | Active-low hardware reset; forces device into read mode within TRP (100 ns typ); required after power-up instability or command errors. |
| VDD / VSS | Power / Ground | Single 2.7–3.6 V supply and ground; decoupling capacitor placement critical near VDD pin for stable erase/write operation. |
Key Features
| Feature | Design Value |
|---|---|
| Erase-Suspend/Resume | Allows real-time read access to non-suspended sectors during active erase; enables background firmware validation without halting system operation. |
| Auto Low Power Mode | Reduces active read current from 6 mA to 4 µA after valid read cycle; cuts dynamic power by >99% during idle polling intervals. |
| Security ID Space | 128-bit factory-programmed ID + 128-word user-programmable space; supports secure boot authentication and device binding. |
| Common Flash Interface (CFI) | JEDEC-standard CFI query mode (98H command) returns geometry, timing, and voltage parameters; enables auto-configuration in generic flash drivers. |
| Software Data Protection | Three-byte unlock sequence required before every program; six-byte sequence before each erase; prevents spurious writes during power transients. |
Applications
| Industrial PLC Firmware Storage | Medical Device Bootloader Memory |
|---|---|
|
Use Scenario: Storing certified bootloader and safety-critical firmware in programmable logic controllers operating continuously in factory environments. IC Role / Device Role / Timing Role: Nonvolatile code storage with hardware-protected boot sector; executes XIP during cold start with 70 ns access guaranteeing deterministic boot timing. Use Value: Bottom-block protection prevents corruption of bootloader during field firmware updates; 100-year retention ensures firmware integrity across equipment lifecycle without battery backup. |
Use Scenario: Holding FDA-approved boot code and calibration tables in portable diagnostic instruments subject to strict regulatory traceability requirements. IC Role / Device Role / Timing Role: Secure, tamper-resistant firmware repository; Security ID space binds firmware to specific hardware units for audit compliance. Use Value: Factory-programmed 128-bit ID enables unique device identification; software data protection prevents unauthorized firmware modification during service recalibration. |
| Automotive Body Control Module | Networking Equipment Configuration Storage |
|
Use Scenario: Storing vehicle-specific configuration data and minor firmware patches in body control modules exposed to wide temperature swings (-40°C to +85°C). IC Role / Device Role / Timing Role: Industrial-grade flash memory with guaranteed operation across full temp range; sector-erase capability enables incremental parameter updates without full reflash. Use Value: 100,000-cycle endurance supports repeated ECU reprogramming at dealerships; uniform 4 KB sectors allow precise update of lighting or door module settings. |
Use Scenario: Retaining switch/router configuration profiles and feature license keys in enterprise networking gear requiring zero-downtime firmware upgrades. IC Role / Device Role / Timing Role: Dual-bank capable storage (via sector management); supports A/B firmware partitioning for atomic fail-safe updates. Use Value: Erase-suspend/resume enables live read of active config while background erase prepares new partition; 256 KB block-erase completes in 18 ms for rapid recovery. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SST39VF3202B-70-4I-EKE | Top 32 KWord block protection (1F8000H–1FFFFFH) instead of bottom; identical density, timing, and package. | Used where bootloader resides in top memory region; not interchangeable without PCB address mapping verification. | Select only if system design allocates boot code to upper address space and requires top-block protection. |
| MX29LV320ETTI-70G | 32 Mbit x16, 70 ns, 2.7–3.6 V; supports CFI but lacks Erase-Suspend and Security ID; different command set and timing margins. | Lower-cost alternative for basic firmware storage without suspend/resume or secure ID needs; requires driver adaptation. | Choose when advanced features like suspend/resume or hardware security are unnecessary and cost sensitivity dominates. |
Compared with SST39VF3201B-70-4I-EKE, the SST39VF3202B offers mirrored block protection for top-boot architectures, while the MX29LV320ETTI sacrifices suspend/resume and security ID for broader vendor availability - both require firmware driver changes and cannot be substituted without validation.
Availability
SST39VF3201B-70-4I-EKE is available at Aetrix Electronics and suitable for industrial control systems, medical diagnostics equipment, and automotive body electronics requiring stable component supply with guaranteed long-term manufacturability and RoHS compliance.
Supply support for SST39VF3201B-70-4I-EKE 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 acquired Silicon Storage Technology (SST) in 2016 and now manufactures and supports the SST39VF3201B-70-4I-EKE as part of its broad legacy flash portfolio.
The SST39VF3201B-70-4I-EKE belongs to the Multi-Purpose Flash Plus (MPF+) product line, designed specifically for embedded systems needing robust, low-voltage, high-reliability code and configuration storage with hardware-based data protection.
FAQ
What is the exact memory organization of the SST39VF3201B-70-4I-EKE?
The SST39VF3201B-70-4I-EKE is organized as 2,097,152 words × 16 bits (2M × 16), totaling 32 Mbit. Its address space spans 000000H to 1FFFFFH, with the bottom 32 KWord (000000H–007FFFH) designated as hardware-protected boot block. This structure supports x16 asynchronous bus interfacing without byte-lane multiplexing.
Does the SST39VF3201B-70-4I-EKE require an external VPP voltage for programming?
No, the SST39VF3201B-70-4I-EKE does not require external VPP. It integrates an internal charge pump that generates the necessary high voltage for erase and program operations using only the 2.7–3.6 V VDD supply. This simplifies board design and eliminates external high-voltage circuitry.
How does hardware block protection work on the SST39VF3201B-70-4I-EKE?
Hardware block protection on the SST39VF3201B-70-4I-EKE is activated by grounding the WP# pin, which locks the bottom 32 KWord (256 KB) boot block (000000H–007FFFH) against all erase and program commands. If WP# is left floating, an internal pull-up holds it high and disables protection - explicit grounding is required for enforcement.
What status detection methods does the SST39VF3201B-70-4I-EKE support during write operations?
The SST39VF3201B-70-4I-EKE supports two status detection methods: Data# Polling on DQ7 (complement-to-data during write, true data upon completion) and Toggle Bit on DQ6 (toggles between 1 and 0 during operation, stops when complete). Both are valid after the rising edge of the fourth WE# pulse for program and sixth for erase operations.
Is the SST39VF3201B-70-4I-EKE compatible with standard JEDEC x16 flash interfaces?
Yes, the SST39VF3201B-70-4I-EKE conforms fully to JEDEC standard pin assignments and command protocols for x16 asynchronous flash memories. It supports common flash interface (CFI) queries, standard read/write/erase command sequences, and operates with industry-standard timing parameters - enabling drop-in compatibility with existing x16 flash controllers.
SST39VF3201B-70-4I-EKE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- SST39 MPF™
- 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:
- 32Mbit
- Memory Organization:
- 2M 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
SST39VF3201B-70-4I-EKE FAQ
1.How can I place an order for SST39VF3201B-70-4I-EKE through Aetrix?
Please submit a Request for Quotation (RFQ) for SST39VF3201B-70-4I-EKE 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 SST39VF3201B-70-4I-EKE reliable?
The price and inventory of SST39VF3201B-70-4I-EKE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SST39VF3201B-70-4I-EKE is usually 5 days.
3.What payment methods are accepted for SST39VF3201B-70-4I-EKE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST39VF3201B-70-4I-EKE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST39VF3201B-70-4I-EKE?
SST39VF3201B-70-4I-EKE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST39VF3201B-70-4I-EKE 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 SST39VF3201B-70-4I-EKE?
For technical support, including SST39VF3201B-70-4I-EKE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST39VF3201B-70-4I-EKE requirements.
6.How does Aetrix verify that SST39VF3201B-70-4I-EKE is sourced from the original manufacturer or authorized distributors?
All SST39VF3201B-70-4I-EKE 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 SST39VF3201B-70-4I-EKE meets industry standards.
7.What is the process for return or replacement of SST39VF3201B-70-4I-EKE?
All SST39VF3201B-70-4I-EKE units undergo pre-shipment inspection (PSI). If there is an issue with SST39VF3201B-70-4I-EKE, 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 SST39VF3201B-70-4I-EKE part is unused and in its original packaging.
Return procedure for SST39VF3201B-70-4I-EKE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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