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Microchip Technology SST39VF512-70-4C-NHE
- Part No.:
- SST39VF512-70-4C-NHE
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-LCC (J-Lead)
- Datasheet:
-
SST39VF512-70-4C-NHE.pdf
- Description:
- IC FLASH 512KBIT PARALLEL 32PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:2,255
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Product details
Overview
SST39VF512-70-4C-NHE 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-NHE datasheet, SST39VF512-70-4C-NHE pinout, SST39VF512-70-4C-NHE application, or SST39VF512-70-4C-NHE 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#/WE# control signals.
Technical Context
This device implements SST's proprietary SuperFlash® technology with split-gate cell design and thick-oxide tunneling injector, enabling fixed erase/program timing independent of cycle count-unlike conventional flash where timing degrades over endurance life. It supports byte-program, sector-erase (4 KB), and chip-erase operations via JEDEC-standard command sequences.
Operation relies on three critical control signals: CE# for device selection, OE# for output gating, and WE# for write initiation. Status detection uses DQ7 (Data# Polling) and DQ6 (Toggle Bit), both valid after defined WE#/CE# edge counts-ensuring deterministic host software polling without timeout dependencies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 512 Kbit (64K × 8), providing 65,536 bytes of nonvolatile storage for boot code or configuration data. |
| Read Access Time | 70 ns maximum-enables direct interfacing with 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-guarantees reliable firmware updates across product lifetime. |
| Data Retention | Greater than 100 years at 25°C-ensures long-term data integrity in unpowered storage. |
| Operating Temperature | −40°C to +85°C (Industrial grade)-qualified for deployment in harsh environmental conditions. |
| Package | 32-lead PLCC (Plastic Leaded Chip Carrier)-through-hole mountable with robust thermal/mechanical performance. |
Pinout & Package
32-lead PLCC package (standard JEDEC x8 flash pinout); RoHS-compliant, surface-mount compatible with reflow profiles up to 260°C for 10 seconds.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A15 | Address Inputs | 16-bit address bus supporting full 64K-byte addressing; A12–A15 select 4 KB erase sectors. |
| DQ0–DQ7 | Data I/O | 8-bit bidirectional data bus; tri-stated when CE# or OE# is high; latched during write cycles. |
| CE# | Chip Enable | Active-low device select-must be low for read/write; high state places device in standby (1 µA). |
| OE# | Output Enable | Active-low output gate-controls data bus drive; high disables outputs to prevent bus contention. |
| WE# | Write Enable | Active-low write control-initiates byte-program, sector-erase, or chip-erase command sequences. |
| VDD | Power Supply | 2.7–3.6 V supply; internal voltage regulation enables stable operation across full voltage range. |
| VSS | Ground | Reference return path for all digital and analog circuitry; decoupling required per layout guidelines. |
| NC | No Connection | Pins 16, 24, and 32 are unconnected-must remain floating; no external tie required. |
Key Features
| Feature | Design Value |
|---|---|
| SuperFlash® Technology | Split-gate cell architecture delivers fixed 18 ms sector-erase and 70 ms chip-erase times-no degradation over 100,000 cycles. |
| Hardware + Software Data Protection | Glitch immunity (<5 ns pulses rejected), VDD power-up/down detection, and mandatory 3-byte/6-byte command sequences prevent accidental writes. |
| JEDEC-Compliant Command Set | Fully compatible with industry-standard flash command protocols-enables drop-in replacement in existing x8 bus designs. |
| Low Power Standby | 1 µA typical current draw in CE#-high mode-critical for battery-backed or energy-constrained applications. |
| Status Detection | DQ6 Toggle Bit and DQ7 Data# Polling provide deterministic, software-driven completion signaling-eliminates need for fixed delay loops. |
Applications
| Industrial PLC Firmware Storage | Medical Device Configuration Memory |
|---|---|
Use Scenario: Storing calibrated sensor offsets, alarm thresholds, and device-specific calibration constants in Class II medical instruments. IC Role / Device Role / Timing Role: Nonvolatile configuration memory accessed during power-on initialization; read-only during normal operation. Use Value: Ensures regulatory-compliant data persistence across 10+ year product lifetimes without backup batteries or capacitors. |
Use Scenario: Holding bootloader and application firmware images in programmable logic controllers deployed in factory automation environments. IC Role / Device Role / Timing Role: Primary boot memory mapped into microcontroller address space; supports in-field firmware updates via serial interface. Use Value: Enables remote firmware patching without hardware replacement-reducing maintenance downtime and service costs. |
| Automotive Body Control Module | Point-of-Sale Terminal Parameter Storage |
Use Scenario: Storing vehicle-specific lighting profiles, door lock logic, and CAN message routing tables in automotive BCMs. IC Role / Device Role / Timing Role: Parallel-connected flash memory accessed by 8-bit MCU during startup and runtime parameter lookup. Use Value: Industrial-grade −40°C to +85°C operation ensures reliability under hood temperature extremes and vibration stress. |
Use Scenario: Maintaining tax rate tables, language packs, and merchant-specific transaction parameters in retail POS terminals. IC Role / Device Role / Timing Role: Read-mostly nonvolatile storage updated infrequently via secure USB or Ethernet channel. Use Value: 100,000-cycle endurance supports daily parameter refresh over 10+ years of continuous retail operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar parallel-interface flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT29LV512-70PU | 512 Kbit, 70 ns, 2.7–3.6 V, but uses different command set and lacks Toggle Bit status signaling. | Requires modified driver firmware; not drop-in compatible due to differing software ID and erase sequence. | Select only if legacy AT29LV firmware already exists and redesign effort is prohibitive. |
| SST39VF512-70-4I-NHE | Identical electrical and functional specification except rated for Industrial (−40°C to +85°C) vs. Commercial (0°C to +70°C) temperature range. | Same pinout, timing, and command set-direct substitute where extended temperature qualification is required. | Preferred for new designs targeting industrial or automotive environments requiring full temp-range validation. |
Compared with AT29LV512-70PU, SST39VF512-70-4C-NHE offers deterministic status detection and JEDEC compliance; compared with SST39VF512-70-4I-NHE, it trades extended temperature rating for lower cost in commercial-grade applications.
Availability
SST39VF512-70-4C-NHE is available at Aetrix Electronics and suitable for industrial control systems, medical instrumentation, and automotive body electronics requiring stable component supply, long-lifecycle support, and RoHS-compliant manufacturing.
Supply support for SST39VF512-70-4C-NHE 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-NHE 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 complex controller overhead.
FAQ
What is the maximum operating frequency supported by SST39VF512-70-4C-NHE?
The SST39VF512-70-4C-NHE does not specify a maximum clock frequency because it is an asynchronous parallel flash device. Its timing is governed by access times-not clock speed-with 70 ns read cycle time (TRC) and 20 µs byte-program time (TBP). System timing must satisfy minimum setup/hold requirements for CE#, OE#, WE#, and address/data signals as defined in Tables 12 and 13 of the datasheet. The SST39VF512-70-4C-NHE interfaces directly with microcontrollers running up to ~14 MHz without wait states.
Does SST39VF512-70-4C-NHE support sector protection or block locking?
No, the SST39VF512-70-4C-NHE does not implement hardware sector protection or software-controlled block locking. It provides only global software data protection via mandatory 3-byte (program) or 6-byte (erase) command sequences and hardware safeguards like noise rejection and VDD monitoring. Sector-level write inhibition requires external logic or firmware-level management. The SST39VF512-70-4C-NHE relies on command authentication-not hardware locks-to prevent unintended writes.
Can SST39VF512-70-4C-NHE be used with a 3.3 V microcontroller having 5 V-tolerant I/O?
Yes, the SST39VF512-70-4C-NHE operates natively at 2.7–3.6 V and features CMOS I/O compatibility with VIH = 0.7×VDD (min) and VIL = 0.8 V (max). When interfaced with a 3.3 V microcontroller-even one with 5 V-tolerant pins-the SST39VF512-70-4C-NHE requires no level shifters, provided VDD is regulated within its specified range. Its VOH and VOL specifications ensure clean logic transitions at 3.3 V, and input leakage remains below 1 µA per pin.
What is the purpose of the NC pins on SST39VF512-70-4C-NHE?
The SST39VF512-70-4C-NHE has three NC (No Connect) pins: Pin 16 (A16), Pin 24 (A17), and Pin 32 (A18). These pins are unconnected internally and must remain electrically floating-no pull-up, pull-down, or tie-to-rail connections are permitted. They exist to maintain mechanical compatibility with higher-density variants (e.g., SST39VF040) in the same 32-lead PLCC footprint. Leaving them unconnected ensures correct address decoding and avoids unintended signal coupling in the SST39VF512-70-4C-NHE.
How is product identification performed on SST39VF512-70-4C-NHE?
Product identification on the SST39VF512-70-4C-NHE is executed via a software command sequence: write 0x5555/0xAA, 0x2AAA/0x55, then 0x5555/0x90. Reading address 0x0000 returns manufacturer ID 0xBF; reading address 0x0001 returns device ID 0xD5, confirming it as a 512 Kbit VF-series part. This sequence is identical across the SST39VFxx0 family and requires no hardware changes. The SST39VF512-70-4C-NHE exits ID mode automatically after reset or upon issuing the 0xF0 exit command.
SST39VF512-70-4C-NHE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- SST39 MPF™
- Package/Case:
- 32-LCC (J-Lead)
- Packaging:
- Tube
- 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-PLCC (11.43x13.97)
SST39VF512-70-4C-NHE FAQ
1.How can I place an order for SST39VF512-70-4C-NHE through Aetrix?
Please submit a Request for Quotation (RFQ) for SST39VF512-70-4C-NHE 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-NHE reliable?
The price and inventory of SST39VF512-70-4C-NHE 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-NHE is usually 5 days.
3.What payment methods are accepted for SST39VF512-70-4C-NHE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST39VF512-70-4C-NHE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST39VF512-70-4C-NHE?
SST39VF512-70-4C-NHE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST39VF512-70-4C-NHE 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-NHE?
For technical support, including SST39VF512-70-4C-NHE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST39VF512-70-4C-NHE requirements.
6.How does Aetrix verify that SST39VF512-70-4C-NHE is sourced from the original manufacturer or authorized distributors?
All SST39VF512-70-4C-NHE 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-NHE meets industry standards.
7.What is the process for return or replacement of SST39VF512-70-4C-NHE?
All SST39VF512-70-4C-NHE units undergo pre-shipment inspection (PSI). If there is an issue with SST39VF512-70-4C-NHE, 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-NHE part is unused and in its original packaging.
Return procedure for SST39VF512-70-4C-NHE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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