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Microchip Technology SST39VF512-70-4C-WHE
- Part No.:
- SST39VF512-70-4C-WHE
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
SST39VF512-70-4C-WHE.pdf
- Description:
- IC FLASH 512KBIT PARALLEL 32TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,359
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Product details
Overview
SST39VF512-70-4C-WHE from Microchip Technology (formerly Silicon Storage Technology) is a 512 Kbit (64K × 8) CMOS Multi-Purpose Flash memory IC with JEDEC-standard x8 parallel interface, 70 ns read access time, 2.7–3.6 V single-supply operation, and uniform 4 KB sector erase architecture. It serves as nonvolatile program/data storage in embedded microcontroller systems requiring field-upgradable firmware.
For engineers reviewing the SST39VF512-70-4C-WHE datasheet, SST39VF512-70-4C-WHE pinout, SST39VF512-70-4C-WHE application, or SST39VF512-70-4C-WHE equivalent, key selection criteria include its industrial temperature range (–40°C to +85°C), SuperFlash® technology endurance (100,000 program/erase cycles), 100-year data retention, and compatibility with standard 8-bit microprocessor buses using CE#, OE#, and WE# control signals.
Technical Context
The SST39VF512-70-4C-WHE implements SST's proprietary SuperFlash® split-gate cell architecture with thick-oxide tunneling injector, enabling fixed erase/program timing independent of cycle count. It supports byte-program, sector-erase (4 KB), and chip-erase operations via JEDEC-standard command sequences executed over its parallel x8 bus.
Operation relies on three critical control signals: CE# for device selection, OE# for output gating, and WE# for write initiation - all compatible with CMOS logic levels. End-of-write detection is implemented via Data# Polling (DQ7) and Toggle Bit (DQ6), eliminating need for external timing delays during programming or erasing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 512 Kbit (64K × 8), directly maps to 64 KB address space for 8-bit MCU code/data storage |
| Read Access Time | 70 ns maximum - enables direct connection to 14 MHz microcontrollers without wait states |
| Supply Voltage | 2.7–3.6 V - supports battery-powered and low-voltage industrial systems without level-shifting |
| Endurance | 100,000 program/erase cycles - sufficient for firmware updates across full product lifecycle |
| Data Retention | Greater than 100 years - ensures long-term reliability in unpowered storage applications |
| Sector Size | Uniform 4 KB sectors - allows granular firmware partitioning and safe over-the-air update rollback |
| Operating Temp | –40°C to +85°C - qualified for industrial-grade embedded control and automotive body electronics |
Pinout & Package
32-lead TSOP (8 mm × 14 mm) package with JEDEC-standard x8 parallel memory pinout. Pin functions conform to industry-standard flash memory interface conventions for seamless integration into existing 8-bit bus designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A15 | Address Inputs | 16-bit address bus supporting full 64K × 8 memory map; A12–A15 select 4 KB sector during erase |
| DQ0–DQ7 | Data Input/Output | 8-bit bidirectional data bus; tri-stated when CE# or OE# high; DQ6 = Toggle Bit, DQ7 = Data# Polling |
| CE# | Chip Enable | Active-low device select; must be low for read/write; enables standby current reduction to 1 µA |
| OE# | Output Enable | Active-low output gate; controls data bus drive during read; high = high-impedance state |
| WE# | Write Enable | Active-low write control; initiates byte-program, sector-erase, and chip-erase command sequences |
| VDD | Power Supply | 2.7–3.6 V supply; internal charge pump generates VPP for programming/erasing |
| VSS | Ground | Reference return path for all I/O and core logic; decoupling capacitor required per datasheet |
| NC | No Connection | Pins 16 and 31 are unconnected; must remain floating or tied to ground per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| SuperFlash® Technology | Split-gate cell with thick-oxide tunneling injector delivers fixed 70 ns read and 14 µs byte-program times across full lifetime |
| Software Data Protection | Three-byte (program) or six-byte (erase) JEDEC-compliant command sequences prevent accidental writes during power transitions |
| Hardware Write Inhibit | Automatic lockout when VDD < 1.5 V, or if WE#/CE#/OE# violate setup/hold timing - eliminates glitch-induced corruption |
| End-of-Write Detection | DQ6 Toggle Bit and DQ7 Data# Polling provide deterministic software-controlled status without external timers or interrupts |
| Uniform Sector Architecture | 128 × 4 KB sectors enable atomic firmware updates and robust recovery partitions in resource-constrained systems |
Applications
| Industrial PLC Firmware Storage | Medical Device Configuration Memory |
|---|---|
Use Scenario: Storing programmable logic controller firmware that requires field updates via serial port or USB interface. IC Role / Device Role / Timing Role: Nonvolatile code storage with byte-level reprogrammability and sector-erase granularity for patch deployment. Use Value: Enables secure, verified firmware upgrades without hardware replacement; 100,000-cycle endurance supports >10 years of scheduled maintenance cycles. | Use Scenario: Holding calibrated sensor offsets, user preferences, and regulatory compliance settings in portable diagnostic equipment. IC Role / Device Role / Timing Role: Parameter retention memory with guaranteed 100-year data integrity at room temperature and elevated storage conditions. Use Value: Eliminates backup batteries and associated failure modes; RoHS-compliant TSOP package meets medical EMC and thermal requirements. |
| Automotive Body Control Module | Networking Equipment Bootloader Storage |
Use Scenario: Storing lighting control algorithms and vehicle-specific configuration tables in door modules and seat controllers. IC Role / Device Role / Timing Role: Industrial-temperature-rated flash memory interfaced directly to 8-bit automotive MCUs via parallel bus. Use Value: –40°C to +85°C operation ensures reliability across engine bay and cabin environments; 2.7 V minimum VDD supports start-stop battery voltage sag. | Use Scenario: Hosting bootloader image and fail-safe recovery firmware in managed switches and wireless access points. IC Role / Device Role / Timing Role: Primary boot memory mapped into CPU address space; accessed during cold reset before DRAM initialization. Use Value: 70 ns read access allows zero-wait-state execution from flash; sector-erase capability enables dual-bank OTA updates with atomic commit. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT29LV512-70PU | Same density (512 Kbit), 70 ns access, but uses different command set and lacks Toggle Bit detection | Requires modified driver software; no hardware-compatible replacement due to differing status reporting | Select only when legacy AT29LV family support is mandatory and firmware can be adapted |
| SST39VF512-70-4I-WHE | Identical electrical and functional specification except industrial temp grade (-40°C to +85°C vs. commercial 0°C to +70°C) | Same pinout and timing; suitable for extended temperature deployments where ambient exceeds 70°C | Preferred for new industrial designs requiring full temperature qualification |
Compared with AT29LV512-70PU, SST39VF512-70-4C-WHE offers superior write-status feedback via Toggle Bit and lower active current (5 mA vs. ~10 mA), while SST39VF512-70-4I-WHE provides identical performance with extended temperature validation - making it the drop-in upgrade path for harsh-environment applications.
Availability
SST39VF512-70-4C-WHE is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device configuration memory, and automotive body control module applications requiring stable component supply and long-term obsolescence management.
Supply support for SST39VF512-70-4C-WHE 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 2010 and continues to manufacture and support the SuperFlash® family of parallel and serial flash memories.
The SST39VF512-70-4C-WHE belongs to the SST39VFxx0 Multi-Purpose Flash product line, designed specifically for cost-sensitive, low-power embedded systems needing reliable, field-upgradable nonvolatile storage without external VPP generation.
FAQ
What is the operating voltage range for SST39VF512-70-4C-WHE?
The SST39VF512-70-4C-WHE operates from 2.7 V to 3.6 V DC. This wide supply range supports battery-backed and low-voltage industrial systems. The device integrates an internal charge pump to generate the higher voltages needed for programming and erasing, eliminating external VPP circuitry. Operation below 2.7 V disables write functionality and places the device in hardware write-inhibit mode for data protection.
Does SST39VF512-70-4C-WHE support sector erase, and what is the sector size?
Yes, the SST39VF512-70-4C-WHE supports uniform sector erase with a fixed size of 4 KB per sector. The device contains 128 such sectors, allowing selective erasure of firmware partitions without affecting adjacent code or configuration data. Sector erase is initiated via a six-byte JEDEC command sequence and completes in typical 18 ms, enabling fast, granular updates essential for secure OTA deployments.
How is write completion detected on SST39VF512-70-4C-WHE?
Write completion on SST39VF512-70-4C-WHE is detected using two hardware-supported methods: Data# Polling (monitoring DQ7) and Toggle Bit (monitoring DQ6). After initiating a program or erase command, software reads DQ7 to detect true data (end of program) or '1' (end of erase), or observes DQ6 toggling until it stabilizes. Both methods eliminate polling delays and are fully documented in the SST39VF512-70-4C-WHE datasheet timing diagrams.
Is SST39VF512-70-4C-WHE pin-compatible with other devices in the SST39VF family?
Yes, SST39VF512-70-4C-WHE shares identical pinout and signal definitions with SST39VF010, SST39VF020, and SST39VF040 in the same 32-lead TSOP package. Address lines A16–A18 are NC on the SST39VF512-70-4C-WHE (as it only requires A0–A15), matching the pin assignment diagram in DS25023B. This allows board reuse across density variants when memory mapping permits.
What is the data retention and endurance specification for SST39VF512-70-4C-WHE?
The SST39VF512-70-4C-WHE guarantees greater than 100 years of data retention at 25°C and 100,000 program/erase cycles minimum per sector. These values are validated per JEDEC standards A103 (retention) and A117 (endurance). Real-world endurance may exceed specification due to SuperFlash® technology's cycle-independent timing and wear-leveling tolerance in properly managed firmware update routines.
SST39VF512-70-4C-WHE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- SST39 MPF™
- Package/Case:
- 32-TFSOP (0.724", 18.40mm Width)
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH
- Memory Size:
- 512Kbit
- Memory Organization:
- 64K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 20µs
- Access Time:
- 70 ns
- Voltage - Supply:
- 2.7V ~ 3.6V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-TSOP
SST39VF512-70-4C-WHE FAQ
1.How can I place an order for SST39VF512-70-4C-WHE through Aetrix?
Please submit a Request for Quotation (RFQ) for SST39VF512-70-4C-WHE 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 SST39VF512-70-4C-WHE reliable?
The price and inventory of SST39VF512-70-4C-WHE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SST39VF512-70-4C-WHE is usually 5 days.
3.What payment methods are accepted for SST39VF512-70-4C-WHE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST39VF512-70-4C-WHE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST39VF512-70-4C-WHE?
SST39VF512-70-4C-WHE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST39VF512-70-4C-WHE 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 SST39VF512-70-4C-WHE?
For technical support, including SST39VF512-70-4C-WHE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST39VF512-70-4C-WHE requirements.
6.How does Aetrix verify that SST39VF512-70-4C-WHE is sourced from the original manufacturer or authorized distributors?
All SST39VF512-70-4C-WHE 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 SST39VF512-70-4C-WHE meets industry standards.
7.What is the process for return or replacement of SST39VF512-70-4C-WHE?
All SST39VF512-70-4C-WHE units undergo pre-shipment inspection (PSI). If there is an issue with SST39VF512-70-4C-WHE, 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 SST39VF512-70-4C-WHE part is unused and in its original packaging.
Return procedure for SST39VF512-70-4C-WHE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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