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Microchip Technology SST39SF020A-70-4C-NHE
- Part No.:
- SST39SF020A-70-4C-NHE
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-LCC (J-Lead)
- Datasheet:
-
SST39SF020A-70-4C-NHE.pdf
- Description:
- IC FLASH 2MBIT PARALLEL 32PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:1,353
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Product details
Overview
SST39SF020A-70-4C-NHE from Microchip Technology is a 2-Mbit (256K × 8) CMOS Multi-Purpose Flash memory IC with JEDEC-standard x8 parallel interface, 70 ns read access time, single 4.5V–5.5V supply operation, and uniform 4-Kbyte sector erase architecture. It serves as nonvolatile program/data storage in embedded microcontroller systems requiring field-upgradable firmware.
For engineers reviewing the SST39SF020A-70-4C-NHE datasheet, SST39SF020A-70-4C-NHE pinout, SST39SF020A-70-4C-NHE application, or SST39SF020A-70-4C-NHE equivalent, key selection criteria include byte-program timing (≤14 µs), chip erase time (4 s typical), data retention (>100 years), endurance (10,000 cycles min), and hardware/software write protection compliance with JEDEC Flash command sets.
Technical Context
This device implements SuperFlash® split-gate cell technology for fixed erase/program times independent of cycle count, eliminating system derating over lifetime. Its control logic supports standard microprocessor bus interfacing via CE#, OE#, and WE# with latched address/data and TTL-compatible I/O.
It features dual end-of-write detection (Data# Polling on DQ7 and Toggle Bit on DQ6), software data protection via six-byte command sequences for sector/chip erase, and hardware safeguards including VDD power-up/down detection and noise/glitch immunity on control pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 2 Mbit (256K × 8) - supports full firmware images for 8-bit/16-bit MCUs without external banking logic |
| Read Access Time | 70 ns - enables direct execution from flash (XIP) at up to ~10 MHz system bus speeds |
| Byte Program Time | 14 µs typical - allows rapid field updates of configuration or calibration data |
| Chip Erase Time | 4 seconds typical - provides predictable full-device reprogramming window for production or recovery |
| Endurance | 10,000 write/erase cycles minimum - qualified per JEDEC A117 for industrial lifecycle reliability |
| Data Retention | Greater than 100 years - ensures long-term integrity of stored boot code or calibration parameters |
| Supply Voltage | 4.5V–5.5V - compatible with legacy 5V logic systems without level-shifting |
| Operating Temperature | –40°C to +85°C - certified for industrial-grade embedded applications |
Pinout & Package
32-lead TSOP (Thin Small Outline Package) with standard x8 parallel Flash pinout; RoHS-compliant, surface-mountable, 11.8 mm × 20.0 mm footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit address bus supporting 131,072-byte addressing; A16 is MSB for 256K × 8 organization |
| DQ0–DQ7 | Data Input/Output | 8-bit bidirectional data bus; tri-stated when CE# or OE# high; supports Data# Polling (DQ7) and Toggle Bit (DQ6) |
| CE# | Chip Enable | Active-low device select; must be low for read/write; enables standby current reduction to 100 µA (CMOS input) |
| OE# | Output Enable | Active-low output gate; controls data bus drive during read; high-Z when deasserted |
| WE# | Write Enable | Active-low write control; initiates byte program, sector erase, or chip erase via command sequences |
| VDD | Power Supply | +4.5V to +5.5V supply; powers internal VPP generator for erase/program operations |
| VSS | Ground | Reference return path for all digital and analog functions; decoupling required per layout guidelines |
| NC (Pin 1, Pin 30) | No Connection | Pin 1 unconnected; Pin 30 is NC for SST39SF010A but A17 for SST39SF020A and SST39SF040 - confirms variant-specific pin mapping |
Key Features
| Feature | Design Value |
|---|---|
| SuperFlash® Technology | Fixed 14 µs byte program and 4 s chip erase times across full lifetime - eliminates software timeout recalibration |
| Uniform 4-Kbyte Sectors | 64 independent erasable blocks enable granular firmware patching without full-chip erase overhead |
| JEDEC-Compliant Command Set | Standardized 6-byte sector/chip erase and 3-byte program sequences ensure interoperability with existing Flash drivers |
| Hardware Write Inhibit | VDD lockout below 2.5V and <5 ns pulse rejection prevent spurious writes during power transients |
| TTL I/O Compatibility | Direct interface with 5V microcontrollers and FPGAs without level shifters or external buffers |
| RoHS Compliance | Lead-free TSOP package meets environmental regulations for industrial and consumer deployment |
Applications
| Industrial PLC Firmware Storage | Medical Device Boot Code |
|---|---|
|
Use Scenario: Storing firmware and configuration tables in programmable logic controllers deployed in factory automation environments with wide temperature swings and EMI exposure. IC Role / Device Role / Timing Role: Nonvolatile program memory mapped into MCU address space; accessed via parallel bus during boot and runtime updates. Use Value: 100-year data retention and 10,000-cycle endurance ensure reliable operation over 15+ year equipment lifecycles without field replacement. |
Use Scenario: Holding certified bootloader and safety-critical initialization routines in portable diagnostic instruments requiring regulatory traceability and zero corruption risk. IC Role / Device Role / Timing Role: Secure, write-protected boot ROM accessed at power-on reset; supports authenticated firmware updates via sector-erase isolation. Use Value: Hardware VDD detection and software data protection prevent unauthorized or accidental reprogramming during clinical use or battery swaps. |
| Automotive Body Control Module | Networking Equipment Configuration |
|
Use Scenario: Storing vehicle-specific calibration maps and CAN protocol stacks in body control units operating across –40°C to +85°C ambient ranges. IC Role / Device Role / Timing Role: Parallel-connected Flash memory providing deterministic 70 ns read latency for real-time sensor processing loops. Use Value: Industrial temperature rating and 4.5V–5.5V supply tolerance maintain functionality during automotive battery voltage sag events. |
Use Scenario: Retaining switch/router configuration profiles and firmware patches in enterprise networking gear requiring hot-swap capability and zero-downtime updates. IC Role / Device Role / Timing Role: Field-upgradable configuration store accessed by management CPU; sector erase enables atomic profile switching. Use Value: 4-Kbyte sector granularity allows concurrent active/inactive configuration banks, enabling rollback-safe firmware upgrades. |
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 | 2-Mbit, 70 ns, 3.0V–3.6V supply only; requires separate VPP for programming | Not suitable for 5V-only systems; lacks integrated VPP generation and uniform sector architecture | Select only for 3.3V designs where lower active current (5 mA vs. 10 mA) is prioritized over voltage flexibility |
| MX29LV200CBTI-70G | 2-Mbit, 70 ns, 3.0V–3.6V supply; supports CFI query mode and wider command set | Requires CFI-aware driver stack; incompatible pinout (44-pin TSOP vs. 32-pin); no 5V support | Choose for new 3.3V designs needing standardized flash interrogation and extended feature set, not drop-in replacement |
Compared with AT29LV020-70PU and MX29LV200CBTI-70G, the SST39SF020A-70-4C-NHE uniquely delivers 5V operation with embedded VPP, fixed timing, and JEDEC x8 compatibility - making it the only viable option for legacy 5V industrial controller upgrades requiring minimal firmware or PCB changes.
Availability
SST39SF020A-70-4C-NHE is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device boot code, automotive body control modules, and networking equipment configuration requiring stable component supply across extended product lifecycles.
Supply support for SST39SF020A-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 leading provider of microcontroller, mixed-signal, analog, and Flash memory solutions, serving industrial, automotive, and consumer markets with vertically integrated silicon and development tools.
The SST39SFxxA family was designed specifically for cost-sensitive, 5V-based embedded systems needing reliable, field-upgradable nonvolatile storage without complex voltage management or external programming circuitry.
FAQ
What is the memory organization of the SST39SF020A-70-4C-NHE?
The SST39SF020A-70-4C-NHE is organized as 256K × 8, delivering 2 Mbit total capacity. It uses 17 address lines (A0–A16) to access the full array, with uniform 4-Kbyte sectors enabling precise erase control. This structure supports direct integration into 8-bit and 16-bit microcontroller buses without address decoding complexity, and the SST39SF020A-70-4C-NHE datasheet confirms A16 as the most significant address bit for this density.
Does the SST39SF020A-70-4C-NHE require an external VPP voltage for programming?
No, the SST39SF020A-70-4C-NHE integrates internal VPP generation and operates entirely from a single 4.5V–5.5V supply for both read and write operations. This eliminates external high-voltage circuitry, simplifies board design, and reduces BOM cost. The SST39SF020A-70-4C-NHE specification explicitly states "Internal VPP Generation" as an automatic write timing feature, distinguishing it from older Flash devices requiring +12V programming supplies.
How does the SST39SF020A-70-4C-NHE indicate completion of a byte program operation?
The SST39SF020A-70-4C-NHE provides two hardware-supported methods: Data# Polling on DQ7 (complement-to-data toggles until completion) and Toggle Bit on DQ6 (bit toggles between successive reads until operation ends). Both are valid after the rising edge of the fourth WE# or CE# pulse. These mechanisms allow host software to poll asynchronously without fixed delays, optimizing system throughput - a confirmed behavior documented in the SST39SF020A-70-4C-NHE datasheet Section 3.5.
Is the SST39SF020A-70-4C-NHE compatible with standard JEDEC x8 Flash command sets?
Yes, the SST39SF020A-70-4C-NHE conforms fully to JEDEC® standard pinouts and command sets for x8 memories, including identical sector erase (30H), chip erase (10H), and byte program (A0H) command sequences. Its software data protection scheme follows JEDEC-approved protocols, ensuring interoperability with existing Flash drivers and programming utilities - a key requirement explicitly stated in the SST39SF020A-70-4C-NHE product description.
What package type is used for the SST39SF020A-70-4C-NHE?
The SST39SF020A-70-4C-NHE is supplied in a 32-lead TSOP (Thin Small Outline Package), as indicated by the "NHE" suffix in the part number and confirmed in Section 8.1 of the official datasheet. This RoHS-compliant, surface-mount package measures 11.8 mm × 20.0 mm and supports automated assembly processes common in industrial electronics manufacturing. The SST39SF020A-70-4C-NHE pin assignments match JEDEC MO-152 standards for 32-lead TSOP devices.
SST39SF020A-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:
- 4.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-PLCC (11.43x13.97)
SST39SF020A-70-4C-NHE FAQ
1.How can I place an order for SST39SF020A-70-4C-NHE through Aetrix?
Please submit a Request for Quotation (RFQ) for SST39SF020A-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 SST39SF020A-70-4C-NHE reliable?
The price and inventory of SST39SF020A-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 SST39SF020A-70-4C-NHE is usually 5 days.
3.What payment methods are accepted for SST39SF020A-70-4C-NHE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST39SF020A-70-4C-NHE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST39SF020A-70-4C-NHE?
SST39SF020A-70-4C-NHE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST39SF020A-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 SST39SF020A-70-4C-NHE?
For technical support, including SST39SF020A-70-4C-NHE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST39SF020A-70-4C-NHE requirements.
6.How does Aetrix verify that SST39SF020A-70-4C-NHE is sourced from the original manufacturer or authorized distributors?
All SST39SF020A-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 SST39SF020A-70-4C-NHE meets industry standards.
7.What is the process for return or replacement of SST39SF020A-70-4C-NHE?
All SST39SF020A-70-4C-NHE units undergo pre-shipment inspection (PSI). If there is an issue with SST39SF020A-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 SST39SF020A-70-4C-NHE part is unused and in its original packaging.
Return procedure for SST39SF020A-70-4C-NHE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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