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Microchip Technology SST39VF512-70-4C-NHE-T
- Part No.:
- SST39VF512-70-4C-NHE-T
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-LCC (J-Lead)
- Datasheet:
-
SST39VF512-70-4C-NHE-T.pdf
- Description:
- IC FLASH 512KBIT PARALLEL 32PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:2,122
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Product details
Overview
SST39VF512-70-4C-NHE-T from Microchip Technology (formerly Silicon Storage Technology) is a 4 Mbit (512K × 8) CMOS Multi-Purpose Flash memory IC with JEDEC-standard x8 parallel interface, 2.7–3.6 V single-supply write operation, 70 ns read access time, 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-T datasheet, SST39VF512-70-4C-NHE-T pinout, SST39VF512-70-4C-NHE-T application, or SST39VF512-70-4C-NHE-T equivalent, key selection criteria include its industrial temperature range (−40°C to +85°C), SuperFlash® technology endurance (10,000 min cycles), 100-year data retention, and compatibility with standard 32-pin PLCC or TSOP footprints.
Technical Context
The SST39VF512-70-4C-NHE-T implements a split-gate SuperFlash cell with thick-oxide tunneling injector, enabling fixed erase/program timing independent of cycle count. Its control logic supports JEDEC-standard command sequences for byte-program, sector-erase, and chip-erase operations using CE#, OE#, and WE# signals.
It uses latched address and data buses, tri-state I/Os controlled by CE# and OE#, and provides two end-of-write detection methods: Data# Polling (DQ7) and Toggle Bit (DQ6). The device requires a three-byte software unlock sequence before programming and a six-byte sequence for erasure, with hardware protections against noise, power-up/down glitches, and unintended writes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4 Mbit (512K × 8), directly maps to 512 KB of contiguous byte-addressable nonvolatile storage |
| Read Access Time | 70 ns - determines maximum sustained read throughput in legacy 8-bit bus systems (e.g., 8051, Z80, or ARM7-based controllers) |
| Supply Voltage Range | 2.7–3.6 V - enables direct interfacing with 3.3 V logic families without level-shifting, supporting battery-powered or low-voltage industrial designs |
| Endurance | 10,000 minimum erase/program cycles - validated per JEDEC A117, sufficient for firmware update logging or configuration storage in field-deployed equipment |
| Data Retention | 100 years - ensures long-term reliability in unpowered storage applications such as medical device calibration tables or industrial sensor calibration data |
| Operating Temperature | −40°C to +85°C - qualified for industrial environments including factory automation, transportation control, and outdoor metering systems |
| Package | 32-lead PLCC (NHE) - surface-mount compatible with standard reflow profiles, RoHS-compliant, and pin-compatible with JEDEC x8 flash footprint |
Pinout & Package
Package: 32-lead Plastic Leaded Chip Carrier (PLCC), 11.43 mm × 11.43 mm body, J-lead profile, RoHS-compliant (NHE suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A18 | Address Inputs | A0–A17 used for 512K × 8 addressing (A18 = NC); AMS = A18 selects sector during erase; latched on falling edge of CE# or WE# |
| DQ0–DQ7 | Data Input/Output | Bi-directional 8-bit data bus; outputs tri-stated when CE# or OE# high; DQ6 = Toggle Bit, DQ7 = Data# Polling status indicator |
| CE# | Chip Enable | Active-low chip select; must be low to enable read/write; controls internal state machine activation and power mode transitions |
| OE# | Output Enable | Active-low output gate; allows data read without deselecting chip; high-Z when asserted high or CE# high |
| WE# | Write Enable | Active-low write control; initiates latching of address/data and triggers internal program/erase timing sequences |
| VDD | Power Supply | 2.7–3.6 V supply; powers core logic and charge pump; internal VPP generation eliminates need for external high-voltage source |
| VSS | Ground | Reference return path for all digital and analog circuitry; decoupling required within 10 mm of VDD pin |
| NC | No Connect | Pins 16, 20, 29, and 30 are unconnected; must remain floating per datasheet; not usable for routing or thermal relief |
Key Features
| Feature | Design Value |
|---|---|
| SuperFlash® Technology | Split-gate cell with thick-oxide injector delivers stable 70 ns read timing and fixed 20 µs byte-program time across full lifecycle - no software de-rating needed |
| Uniform Sector Architecture | 128 sectors × 4 KB enables granular firmware updates without erasing entire image - critical for fail-safe OTA bootloaders |
| Hardware + Software Data Protection | Glitch immunity (<5 ns), VDD lockout (<1.5 V), and mandatory 3-byte unlock sequence prevent corruption during brown-out or reset conditions |
| JEDEC-Compliant Command Set | Fully interoperable with existing x8 flash drivers and BIOS/UEFI firmware stacks - zero driver porting effort for legacy system integration |
| Low Standby Current | 15 µA max at VDD max - extends battery life in always-on monitoring nodes or energy-harvesting sensor endpoints |
Applications
| Industrial PLC Firmware Storage | Medical Device Calibration Data |
|---|---|
Use Scenario: Storing ladder logic firmware and I/O configuration in programmable logic controllers deployed in factory-floor environments with wide ambient temperature swings. IC Role / Device Role / Timing Role: Nonvolatile code storage with 70 ns read access, enabling real-time scan-cycle execution without wait states on 8-bit parallel buses. Use Value: Industrial temperature rating (−40°C to +85°C) and 100-year data retention ensure firmware integrity over 15+ year equipment lifecycles without recalibration. | Use Scenario: Holding factory-trimmed sensor offset/gain coefficients and regulatory compliance logs in portable diagnostic ultrasound or ECG units. IC Role / Device Role / Timing Role: Secure, tamper-resistant parameter storage accessed only during device power-up or service mode via locked software commands. Use Value: Hardware write-inhibit and mandatory 3-byte unlock sequence prevent accidental overwrite of calibrated values during field servicing or firmware updates. |
| Automotive Body Control Module (BCM) | Smart Energy Meter Firmware |
Use Scenario: Hosting configurable lighting, door-lock, and window-control logic in automotive BCMs where firmware may require regional variant updates post-production. IC Role / Device Role / Timing Role: Field-upgradable program memory interfaced to 8-bit MCU via standard x8 bus; sector-erase enables patch-only updates. Use Value: 4 KB uniform sectors allow differential firmware patches under 4 KB to be applied without erasing unrelated modules - minimizing update time and risk. | Use Scenario: Storing metrology firmware, tariff tables, and communication stack binaries in ANSI C12.19-compliant smart electricity meters deployed outdoors. IC Role / Device Role / Timing Role: Primary nonvolatile storage for certified firmware images, accessed during secure boot and remote FOTA validation. Use Value: 10,000-cycle endurance supports >10 years of annual firmware upgrades and cryptographic key rotation without wear-out concerns. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MX29LV400CBTI-70G | 4 Mbit (512K × 8), 70 ns, 3.0–3.6 V supply, 32-pin TSOP; lacks SuperFlash fixed-timing guarantee | Commercial temp only (0°C to +70°C); not rated for industrial ambient extremes | Select when cost sensitivity outweighs need for −40°C operation or guaranteed timing stability over lifetime |
| S29AL032D70TFI020 | 32 Mbit (4M × 8), 70 ns, 2.7–3.6 V, 48-pin TSOP; higher density but incompatible pinout and command set | Requires PCB redesign and driver modification; suited for next-gen platforms scaling beyond 4 Mbit | Select only for new designs targeting future-proof density headroom; not a drop-in replacement |
Compared with MX29LV400CBTI-70G and S29AL032D70TFI020, the SST39VF512-70-4C-NHE-T uniquely combines industrial temperature support, SuperFlash timing consistency, and JEDEC x8 pin compatibility - making it optimal for retrofitting legacy 8-bit systems requiring long-term reliability without layout changes.
Availability
SST39VF512-70-4C-NHE-T is available at Aetrix Electronics and suitable for industrial PLCs, medical diagnostics equipment, automotive body control modules, and smart energy meters requiring stable component supply across extended product lifecycles.
Supply support for SST39VF512-70-4C-NHE-T 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 continues to manufacture and support the SuperFlash family of parallel and serial NOR flash devices.
The SST39VF series belongs to Microchip's legacy parallel-interface NOR flash product line, designed specifically for cost-sensitive, space-constrained embedded systems needing simple, robust, and field-upgradable nonvolatile storage without complex SPI or QSPI interfaces.
FAQ
What is the exact memory organization of the SST39VF512-70-4C-NHE-T?
The SST39VF512-70-4C-NHE-T is organized as 512K × 8 bits (4 Mbit total), providing 524,288 individually addressable bytes. Address lines A0–A17 are active; A18 is not connected. This structure supports direct byte-level reads and writes without bank switching or page management overhead in 8-bit microcontroller systems.
Does the SST39VF512-70-4C-NHE-T support both PLCC and TSOP packages?
No - the "NHE" suffix in SST39VF512-70-4C-NHE-T explicitly denotes the 32-lead PLCC package. TSOP variants use different suffixes (e.g., "NHE" ≠ TSOP). While the internal die and pin functions are identical across packages, mechanical mounting, thermal profile, and board layout differ - the NHE version requires PLCC socket or reflow-compatible land pattern.
How does the SST39VF512-70-4C-NHE-T handle power-up write protection?
The SST39VF512-70-4C-NHE-T incorporates VDD power-up/down detection: write operations are inhibited until VDD rises above 1.5 V, and automatically disabled if VDD falls below that threshold. This prevents spurious writes during brown-out conditions - a critical safeguard for systems using the SST39VF512-70-4C-NHE-T in battery-backed or unstable power environments.
Can the SST39VF512-70-4C-NHE-T be used in a 5 V system?
No - the SST39VF512-70-4C-NHE-T is strictly a 2.7–3.6 V device. Applying 5 V to VDD will exceed absolute maximum ratings and cause permanent damage. Interfacing with 5 V microcontrollers requires level translation on address, data, and control lines (CE#, OE#, WE#), or use of 3.3 V–tolerant MCU I/Os with appropriate pull-ups.
What command sequence is required to initiate a sector erase on the SST39VF512-70-4C-NHE-T?
A six-byte software command sequence is mandatory: 5555H/AAH → 2AAAH/55H → 5555H/80H → 5555H/AAH → 2AAAH/55H → Sector_Address/30H. The sector address is latched on the falling edge of the sixth WE# pulse. This sequence must be executed without interruption; any invalid command resets the device to read mode within TRC (read cycle time).
SST39VF512-70-4C-NHE-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- SST39 MPF™
- Package/Case:
- 32-LCC (J-Lead)
- Packaging:
- Tape & Reel (TR)
- 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-T FAQ
1.How can I place an order for SST39VF512-70-4C-NHE-T through Aetrix?
Please submit a Request for Quotation (RFQ) for SST39VF512-70-4C-NHE-T 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-T reliable?
The price and inventory of SST39VF512-70-4C-NHE-T 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-T is usually 5 days.
3.What payment methods are accepted for SST39VF512-70-4C-NHE-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST39VF512-70-4C-NHE-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST39VF512-70-4C-NHE-T?
SST39VF512-70-4C-NHE-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST39VF512-70-4C-NHE-T 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-T?
For technical support, including SST39VF512-70-4C-NHE-T 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-T requirements.
6.How does Aetrix verify that SST39VF512-70-4C-NHE-T is sourced from the original manufacturer or authorized distributors?
All SST39VF512-70-4C-NHE-T 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-T meets industry standards.
7.What is the process for return or replacement of SST39VF512-70-4C-NHE-T?
All SST39VF512-70-4C-NHE-T units undergo pre-shipment inspection (PSI). If there is an issue with SST39VF512-70-4C-NHE-T, 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-T part is unused and in its original packaging.
Return procedure for SST39VF512-70-4C-NHE-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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