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Microchip Technology SST39VF3201-70-4I-EKE
- Part No.:
- SST39VF3201-70-4I-EKE
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
SST39VF3201-70-4I-EKE.pdf
- Description:
- IC FLASH 32MBIT PARALLEL 48TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:823
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Product details
Overview
SST39VF3201-70-4I-EKE from Microchip Technology is a 32 Mbit (2M × 16) CMOS Multi-Purpose Flash Plus memory IC with x16 asynchronous interface, 70 ns read access time, single 2.7–3.6V supply operation, and bottom-block hardware write protection. It implements SuperFlash technology for high reliability in embedded firmware storage applications requiring field-upgradable code or configuration data.
For engineers reviewing the SST39VF3201-70-4I-EKE datasheet, SST39VF3201-70-4I-EKE pinout, SST39VF3201-70-4I-EKE application, or SST39VF3201-70-4I-EKE equivalent, this page delivers verified specifications, JEDEC-compliant pin mapping, boot-block protection behavior, erase-suspend capability, and direct alternatives for legacy design continuity and BOM migration planning.
Technical Context
This device uses SST's proprietary SuperFlash split-gate cell architecture with thick-oxide tunneling injector, enabling fixed 7 µs word-program and 18 ms sector/block-erase times independent of endurance cycles. It supports JEDEC-standard command sets including CFI Query, Security ID, and Software Data Protection with six-byte erase sequences.
Hardware block protection targets the bottom 32 KWord (000000H–007FFFH) via WP# pin; RST# provides hardware reset to Read mode; DQ6/DQ7 status bits enable real-time end-of-write detection during Program/Erase operations without polling overhead.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 32 Mbit (2M × 16), organized as 2,097,152 words × 16 bits - supports full firmware image storage in resource-constrained microcontroller systems. |
| Read Access Time | 70 ns - enables direct execution from flash (XIP) in 5 MHz bus systems with minimal wait states. |
| Supply Voltage | 2.7–3.6 V - compatible with 3.3 V logic domains and tolerant of brown-out conditions down to 2.7 V. |
| Endurance | 100,000 program/erase cycles - sufficient for infrequent firmware updates over 10+ years of field operation. |
| Data Retention | >100 years - ensures long-term integrity of boot code and calibration tables without refresh. |
| Erase Granularity | Uniform 2 KWord sectors (4 KB) and 32 KWord blocks (64 KB) - allows selective update of application modules without full chip erase. |
| Write Protection | Hardware bottom-block protection (000000H–007FFFH) via WP# pin - safeguards bootloader region against accidental overwrite. |
Pinout & Package
Package: 48-lead TSOP (12 mm × 20 mm), RoHS compliant, JEDEC-standard x16 flash footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A20 | Address Inputs | A0–A19 used for SST39VF3201 addressing (A20 MSB); A20 selects top half of 2M-word space; AMS = A20 per datasheet. |
| DQ0–DQ15 | Data I/O | x16 bidirectional data bus; latched internally during writes; tri-stated when CE# or OE# high. |
| CE# | Chip Enable | Active-low chip select; device enters standby (3 µA) when high; required low for all operations. |
| OE# | Output Enable | Active-low output gate; controls data bus drivers during read; high disables outputs. |
| WE# | Write Enable | Active-low control for write cycles; latches address/data on falling/rising edges per JEDEC timing. |
| WP# | Write Protect | Active-low hardware lock for bottom 32 KWord boot block (000000H–007FFFH); floating = unprotected. |
| RST# | Reset | Active-low hardware reset; terminates ongoing Program/Erase and forces return to Read mode. |
| VDD | Power Supply | 2.7–3.6 V core supply; internal charge pump generates VPP for erase/program - no external high-voltage source needed. |
| VSS | Ground | Two dedicated ground pins (pins 23 & 48 in TSOP) - reduces noise coupling during high-speed reads/writes. |
Key Features
| Feature | Design Value |
|---|---|
| Erase-Suspend/Resume | Pause active sector/block erase to read or program other regions - enables real-time firmware patching without interrupting background erase. |
| Auto Low Power Mode | Reduces active read current from 9 mA to 3 µA after valid access - cuts dynamic power by >99% during idle bus cycles. |
| Security ID | 256-bit factory + user programmable ID space (128 + 128 bits) - supports secure boot authentication and device binding. |
| CFI Support | JEDEC Common Flash Interface compliant - enables OS/driver auto-detection of geometry, timing, and command set without hard-coded parameters. |
| Toggle Bit & Data# Polling | DQ6 toggling and DQ7 complement detection - eliminates need for fixed delay loops during write completion verification. |
Applications
| Industrial PLC Firmware Storage | Medical Device Bootloader Memory |
|---|---|
Use Scenario: Storing updatable ladder logic and I/O configuration in DIN-rail mounted programmable logic controllers operating in harsh EMI environments. IC Role / Device Role / Timing Role: Nonvolatile code storage with hardware boot-block protection and 70 ns read access for deterministic scan-cycle timing. Use Value: Bottom-block protection prevents corruption of safety-critical startup routines during remote firmware updates over Modbus TCP. |
Use Scenario: Holding certified bootloader and calibration constants in FDA-regulated diagnostic imaging equipment requiring traceable firmware revisions. IC Role / Device Role / Timing Role: Secure, long-retention storage for signed firmware images validated at power-on using Security ID and CFI-verified geometry. Use Value: 100-year data retention and 100,000-cycle endurance ensure calibration stability across product lifetime without recalibration service events. |
| Automotive Infotainment Head Unit | Networking Equipment Configuration Storage |
Use Scenario: Hosting upgradable UI firmware and audio codec profiles in automotive-grade head units exposed to thermal cycling (-40°C to +105°C). IC Role / Device Role / Timing Role: Temperature-rated flash memory supporting XIP execution with 70 ns access and Auto Low Power mode for reduced thermal load. Use Value: Single 2.7–3.6 V supply simplifies power design; SuperFlash fixed erase time avoids timing de-rating over vehicle lifetime. |
Use Scenario: Storing VLAN tables, ACL rules, and MAC address tables in managed Ethernet switches requiring hot-swappable firmware patches. IC Role / Device Role / Timing Role: Sector-erasable nonvolatile memory enabling atomic rule-set updates without service interruption. Use Value: Erase-suspend capability allows live packet forwarding while updating configuration sectors - zero downtime during maintenance windows. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SST39VF3201B-70-4I-EKE | Direct revision replacement with identical pinout, timing, and command set; updated process node improves parametric yield. | No functional change; qualified for same industrial temperature range (-40°C to +85°C) and RoHS compliance. | Select for new designs requiring continued availability and enhanced manufacturing consistency. |
| MX29LV320ETTI-70G | 32 Mbit x16 flash with 70 ns access, but uses different command set (no CFI support) and lacks Erase-Suspend functionality. | Requires firmware driver modification; no hardware boot-block protection - relies on software locking only. | Use only if existing system already supports Macronix command protocol and does not require suspend/resume capability. |
Compared with SST39VF3201-70-4I-EKE, the SST39VF3201B-70-4I-EKE offers identical electrical and functional behavior with improved production continuity, while MX29LV320ETTI-70G requires driver changes and sacrifices erase-suspend flexibility - making the B-revision the preferred drop-in upgrade path.
Availability
SST39VF3201-70-4I-EKE is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device bootloader memory, automotive infotainment head units, networking equipment configuration storage, and legacy embedded system maintenance requiring stable component supply.
Supply support for SST39VF3201-70-4I-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 is a global semiconductor company specializing in microcontrollers, analog devices, and memory solutions, acquired Silicon Storage Technology (SST) in 2010 to expand its nonvolatile memory portfolio.
The SST39VF3201-70-4I-EKE belongs to the Multi-Purpose Flash Plus (MPF+) product line, designed specifically for cost-sensitive, high-reliability embedded applications requiring field-upgradable firmware with hardware-level security and robustness against voltage transients.
FAQ
What is the memory organization of the SST39VF3201-70-4I-EKE?
The SST39VF3201-70-4I-EKE is organized as 2M × 16, delivering 32 Mbit total capacity (2,097,152 words × 16 bits). Its address space spans A0–A19 (20 address lines), with A20 serving as the most significant bit for full 2M-word addressing. This structure supports x16 data bus interfacing directly to microprocessor or FPGA memory controllers without data multiplexing.
Does the SST39VF3201-70-4I-EKE support hardware write protection, and how is it configured?
Yes, the SST39VF3201-70-4I-EKE implements bottom-block hardware write protection for the lowest 32 KWord (000000H–007FFFH) via the WP# pin. When WP# is driven low, Program and Erase operations on that boot block are inhibited. If left floating, an internal pull-up holds WP# high, disabling protection. This feature is confirmed in Table 3 and Section 9 of the DS25028A datasheet for SST39VF3201/3202 variants.
What is the purpose of the RST# pin on the SST39VF3201-70-4I-EKE?
The RST# pin on the SST39VF3201-70-4I-EKE provides hardware-initiated reset to Read mode, terminating any in-progress Program or Erase operation. Holding RST# low for ≥ TRP (reset pulse width) forces immediate return to array read state. After release, a minimum TRHR hold time is required before valid reads resume. This ensures deterministic recovery from power faults or watchdog timeouts in safety-critical systems using the SST39VF3201-70-4I-EKE.
How does the SST39VF3201-70-4I-EKE indicate completion of a Program or Erase operation?
The SST39VF3201-70-4I-EKE uses two hardware status mechanisms: Data# Polling (DQ7) and Toggle Bit (DQ6). During Program, DQ7 outputs complemented data until completion, then true data. During Erase, DQ7 reads '0' until done, then '1'. DQ6 toggles between 0/1 during active operations and stops upon completion. Both methods are valid after defined WE#/CE# edge counts per operation type and eliminate need for fixed delay loops in host firmware managing the SST39VF3201-70-4I-EKE.
Is the SST39VF3201-70-4I-EKE compatible with JEDEC-standard flash interfaces?
Yes, the SST39VF3201-70-4I-EKE conforms fully to JEDEC standard pinouts and command sets for x16 flash memories, including Common Flash Interface (CFI) support. It responds to standard three-byte CFI entry (5555H/AAH → 2AAAH/55H → 5555H/98H) and returns standardized geometry and timing descriptors. This ensures interoperability with generic flash drivers and BIOS/UEFI implementations that rely on JEDEC compliance for automatic detection and initialization of the SST39VF3201-70-4I-EKE.
SST39VF3201-70-4I-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:
- 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
SST39VF3201-70-4I-EKE FAQ
1.How can I place an order for SST39VF3201-70-4I-EKE through Aetrix?
Please submit a Request for Quotation (RFQ) for SST39VF3201-70-4I-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 SST39VF3201-70-4I-EKE reliable?
The price and inventory of SST39VF3201-70-4I-EKE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SST39VF3201-70-4I-EKE is usually 5 days.
3.What payment methods are accepted for SST39VF3201-70-4I-EKE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST39VF3201-70-4I-EKE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST39VF3201-70-4I-EKE?
SST39VF3201-70-4I-EKE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST39VF3201-70-4I-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 SST39VF3201-70-4I-EKE?
For technical support, including SST39VF3201-70-4I-EKE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST39VF3201-70-4I-EKE requirements.
6.How does Aetrix verify that SST39VF3201-70-4I-EKE is sourced from the original manufacturer or authorized distributors?
All SST39VF3201-70-4I-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 SST39VF3201-70-4I-EKE meets industry standards.
7.What is the process for return or replacement of SST39VF3201-70-4I-EKE?
All SST39VF3201-70-4I-EKE units undergo pre-shipment inspection (PSI). If there is an issue with SST39VF3201-70-4I-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 SST39VF3201-70-4I-EKE part is unused and in its original packaging.
Return procedure for SST39VF3201-70-4I-EKE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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