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Microchip Technology SST39VF020-70-4C-NHE
- Part No.:
- SST39VF020-70-4C-NHE
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-LCC (J-Lead)
- Datasheet:
-
SST39VF020-70-4C-NHE.pdf
- Description:
- IC FLASH 2MBIT PARALLEL 32PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:684
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Product details
Overview
SST39VF020-70-4C-NHE from Microchip Technology is a 2-Mbit (256K × 8) CMOS Multi-Purpose Flash memory IC with 2.7V–3.6V single-supply write operation, 70 ns read access time, and uniform 4-Kbyte sector erase architecture. It implements SuperFlash® technology for high reliability in embedded firmware storage, BIOS updates, and configuration memory applications.
For engineers reviewing the SST39VF020-70-4C-NHE datasheet, SST39VF020-70-4C-NHE pinout, SST39VF020-70-4C-NHE application, or SST39VF020-70-4C-NHE equivalent, key selection criteria include its 2.7V minimum VDD support, JEDEC-standard x8 parallel interface, 100,000-cycle endurance, and compatibility with legacy 32-lead PLCC/TSOP footprints in industrial temperature range (−40°C to +85°C).
Technical Context
This device uses a split-gate SuperFlash® cell architecture with thick-oxide tunneling injector, enabling fixed erase/program times independent of cycle count-unlike conventional flash technologies where timing degrades over endurance life. Its command-set architecture requires six-byte software data protection sequences for sector/chip erase and three-byte sequences for byte programming.
Operation relies on standard microprocessor control signals (CE#, OE#, WE#) with latched address/data buses and supports two end-of-write detection methods: Data# Polling (DQ7) and Toggle Bit (DQ6). The device conforms to JEDEC-standard pinouts and command definitions for x8 parallel flash memories.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 256K × 8 = 2 Mbit; supports firmware image storage up to 256 KB in size. |
| Read Access Time | 70 ns maximum; enables direct execution from flash (XIP) in systems with ≤14 MHz bus timing budgets. |
| Write Voltage Range | 2.7V–3.6V; allows operation from single Li-ion or regulated 3.3V rails without external VPP generation. |
| Endurance | 100,000 program/erase cycles per sector; sufficient for field firmware updates over 10+ years in industrial deployments. |
| Data Retention | Greater than 100 years at +85°C; ensures long-term configuration integrity in unpowered storage. |
| Active Current | 5 mA typical at 14 MHz; reduces system power budget impact during boot-time code fetch. |
| Standby Current | 1 µA typical; enables low-power sleep modes in battery-backed or energy-constrained systems. |
Pinout & Package
Package: 32-lead PLCC (plastic leaded chip carrier) or 32-lead TSOP (thin small-outline package), both RoHS-compliant and rated for industrial temperature range (−40°C to +85°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | A0–A16 used for full 256K × 8 addressing (A16 = AMS); A17/A18 not connected per device family spec. |
| DQ0–DQ7 | Data I/O | Bidirectional 8-bit data bus; tri-stated when CE# or OE# is high; supports latched byte writes. |
| CE# | Chip Enable | Active-low chip select; must be low for any read/write operation; enables multi-device decoding. |
| OE# | Output Enable | Active-low output gate; controls data bus drive during reads; independent of CE# for timing flexibility. |
| WE# | Write Enable | Active-low write strobe; initiates byte program, sector erase, and chip erase command sequences. |
| VDD | Power Supply | 2.7V–3.6V supply; internal charge pump generates programming voltage-no external VPP required. |
| VSS | Ground | Reference return for all I/O and core logic; requires low-impedance PCB connection. |
| NC | No Connection | Pins 1, 6, 9, 29, 30 are NC for SST39VF020; must remain unconnected per datasheet. |
Key Features
| Feature | Design Value |
|---|---|
| SuperFlash® Technology | Fixed 18 ms sector erase and 70 ms chip erase times across full endurance life-eliminates software derating or timeout expansion. |
| Uniform 4-Kbyte Sectors | 64 independent erasable sectors enable granular firmware patching without full-chip reprogramming. |
| Hardware + Software Protection | Glitch immunity (<5 ns pulses), VDD power-up/down detection, and JEDEC-standard 3-/6-byte command lockout prevent accidental writes. |
| CMOS I/O Compatibility | Full TTL/CMOS level compatibility (VIH = 0.7×VDD, VOL = 0.2V) ensures drop-in replacement in legacy 5V-tolerant designs using level shifters. |
| Product Identification Mode | Software-readable Manufacturer ID (BFh) and Device ID (D6h) allow runtime part verification in mixed-manufacturer BOMs. |
Applications
| Industrial PLC Firmware Storage | Medical Device Configuration Memory |
|---|---|
Use Scenario: Storing programmable logic controller firmware images that require field updates via serial interface. IC Role / Device Role / Timing Role: Nonvolatile code storage with XIP-capable 70 ns read access and sector-erase granularity for delta updates. Use Value: Enables secure, low-risk firmware upgrades without full device reflash-reducing downtime and validation overhead. | Use Scenario: Holding calibrated sensor offsets, user preferences, and regulatory compliance settings in portable diagnostic equipment. IC Role / Device Role / Timing Role: Reliable configuration memory with >100-year data retention and 2.7V operation for battery-backed systems. Use Value: Guarantees parameter persistence across 10+ years of clinical use, meeting IEC 62304 data integrity requirements. |
| Automotive Infotainment Bootloader | Network Router Boot Image Storage |
Use Scenario: Hosting bootloader code that initializes SoC peripherals before loading main OS from NAND or eMMC. IC Role / Device Role / Timing Role: Fast-read, single-supply parallel flash providing deterministic boot timing under −40°C to +85°C conditions. Use Value: Eliminates need for external VPP circuitry and supports AEC-Q100-compliant designs with minimal layout changes. | Use Scenario: Storing primary boot firmware for enterprise-grade routers requiring remote firmware rollback capability. IC Role / Device Role / Timing Role: Dual-sector protected storage with hardware/software write lock for fail-safe dual-image switching. Use Value: Allows atomic firmware swaps with verified checksums-preventing bricking during over-the-air updates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT29LV020-70PU | Same 2-Mbit density, 70 ns access, but requires 3.0V–3.6V VDD; no 2.7V support. | Limited to 0°C–70°C commercial temp range; unsuitable for industrial ambient environments. | Select only if system operates strictly within 3.0V–3.6V and does not require extended temperature qualification. |
| SST39VF020-70-4I-NHE | Identical electrical specs and pinout; differs only in temperature grade (industrial −40°C to +85°C vs. commercial 0°C to +70°C). | Same functional behavior; validated for harsher thermal cycling and longer lifetime in embedded systems. | Preferred for new industrial designs where long-term reliability and wide operating range are mandatory. |
Compared with AT29LV020-70PU, SST39VF020-70-4C-NHE offers lower-voltage operation and broader temperature tolerance; compared with SST39VF020-70-4I-NHE, it trades industrial qualification for cost-sensitive commercial applications-both alternatives retain identical sector architecture and command compatibility.
Availability
SST39VF020-70-4C-NHE is available at Aetrix Electronics and suitable for industrial automation, medical diagnostics, automotive infotainment, and network infrastructure applications requiring stable component supply across multi-year production cycles.
Supply support for SST39VF020-70-4C-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 Inc. is a global semiconductor company specializing in microcontrollers, analog devices, and nonvolatile memory solutions for embedded and industrial markets.
The SST39VF series belongs to Microchip's Multi-Purpose Flash product line, designed specifically for reliable, low-voltage parallel flash storage in space-constrained, thermally demanding embedded systems.
FAQ
What is the maximum operating temperature range for SST39VF020-70-4C-NHE?
The SST39VF020-70-4C-NHE is rated for commercial temperature operation from 0°C to +70°C. Its industrial-grade counterpart SST39VF020-70-4I-NHE extends this to −40°C to +85°C. Both share identical electrical specifications except for thermal qualification-SST39VF020-70-4C-NHE is intended for controlled-environment applications like office equipment or consumer electronics where ambient extremes are avoided.
Does SST39VF020-70-4C-NHE require an external VPP voltage for programming?
No, SST39VF020-70-4C-NHE does not require an external VPP voltage. It integrates an internal charge pump that generates the necessary high voltage for erase and program operations from the 2.7V–3.6V VDD supply. This eliminates external VPP circuitry, simplifies board design, and reduces bill-of-materials cost-making SST39VF020-70-4C-NHE suitable for compact, low-power embedded systems.
How many 4-Kbyte sectors does SST39VF020-70-4C-NHE contain?
SST39VF020-70-4C-NHE contains 64 uniform 4-Kbyte sectors, totaling 256 Kbytes (2 Mbit) of addressable memory. Each sector can be erased independently using the JEDEC-standard six-byte command sequence, enabling targeted firmware updates without affecting adjacent code or configuration data-critical for robust field maintenance in deployed systems.
What command sequence initiates byte programming in SST39VF020-70-4C-NHE?
Byte programming in SST39VF020-70-4C-NHE begins with a three-byte software data protection sequence: write AAh to address 5555h, then 55h to address 2AAAh, then A0h to address 5555h. After this unlock, the target byte address and data are written. The internal program operation completes within 20 µs, with completion signaled by Data# Polling (DQ7) or Toggle Bit (DQ6) status checks.
Is SST39VF020-70-4C-NHE pin-compatible with SST39LF020 devices?
Yes, SST39VF020-70-4C-NHE is pin-compatible with SST39LF020 variants in the same 32-lead PLCC or TSOP package. Both share identical pin assignments, command sets, and timing interfaces. The key difference lies in voltage range: SST39VF020 supports 2.7V–3.6V operation, while SST39LF020 requires 3.0V–3.6V. System designers may substitute SST39VF020-70-4C-NHE where lower-voltage margin or wider supply tolerance is needed.
SST39VF020-70-4C-NHE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- SST39 MPF™
- Package/Case:
- 32-LCC (J-Lead)
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH
- Memory Size:
- 2Mbit
- Memory Organization:
- 256K 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)
SST39VF020-70-4C-NHE FAQ
1.How can I place an order for SST39VF020-70-4C-NHE through Aetrix?
Please submit a Request for Quotation (RFQ) for SST39VF020-70-4C-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 SST39VF020-70-4C-NHE reliable?
The price and inventory of SST39VF020-70-4C-NHE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SST39VF020-70-4C-NHE is usually 5 days.
3.What payment methods are accepted for SST39VF020-70-4C-NHE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST39VF020-70-4C-NHE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST39VF020-70-4C-NHE?
SST39VF020-70-4C-NHE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST39VF020-70-4C-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 SST39VF020-70-4C-NHE?
For technical support, including SST39VF020-70-4C-NHE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST39VF020-70-4C-NHE requirements.
6.How does Aetrix verify that SST39VF020-70-4C-NHE is sourced from the original manufacturer or authorized distributors?
All SST39VF020-70-4C-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 SST39VF020-70-4C-NHE meets industry standards.
7.What is the process for return or replacement of SST39VF020-70-4C-NHE?
All SST39VF020-70-4C-NHE units undergo pre-shipment inspection (PSI). If there is an issue with SST39VF020-70-4C-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 SST39VF020-70-4C-NHE part is unused and in its original packaging.
Return procedure for SST39VF020-70-4C-NHE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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