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Microchip Technology SST39SF010A-55-4I-NHE-T
- Part No.:
- SST39SF010A-55-4I-NHE-T
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-LCC (J-Lead)
- Datasheet:
-
SST39SF010A-55-4I-NHE-T.pdf
- Description:
- IC FLASH 1MBIT PARALLEL 32PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:5,553
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Product details
Overview
SST39SF010A-55-4I-NHE-T from Microchip Technology is a 1-Mbit (128K × 8) CMOS Multi-Purpose Flash memory IC with 55 ns read access time, single 4.5V–5.5V supply operation, and uniform 4-Kbyte sector erase architecture. It implements SuperFlash® split-gate technology for high reliability and is used in embedded firmware storage, BIOS/UEFI code retention, and industrial controller configuration memory.
For engineers reviewing the SST39SF010A-55-4I-NHE-T datasheet, SST39SF010A-55-4I-NHE-T pinout, SST39SF010A-55-4I-NHE-T application, or SST39SF010A-55-4I-NHE-T equivalent, this page delivers verified technical context, JEDEC-compliant timing behavior, hardware/software data protection mechanisms, and real-world design implications for legacy x8 parallel Flash integration.
Technical Context
The SST39SF010A-55-4I-NHE-T uses SuperFlash® split-gate cell architecture with thick-oxide tunneling injector, enabling fixed erase/program times independent of cycle count. Its command interface conforms to JEDEC-standard x8 Flash pinouts and software command sets-including three-byte byte-program and six-byte sector/chip erase sequences.
It supports TTL-compatible I/O, latched address/data bus, and dual end-of-write detection via Data# Polling (DQ7) and Toggle Bit (DQ6). Hardware protections include noise/glitch immunity (<5 ns pulse rejection), VDD power-up/down detection (<2.5V inhibit), and write-inhibit mode via CE#/OE#/WE# control states.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 1 Mbit (128K × 8); supports direct replacement of EPROMs and earlier Flash in 8-bit microcontroller boot memory maps. |
| Read Access Time | 55 ns (max); enables full-speed operation with 14 MHz system clocks without wait states in legacy 8051, Z80, or 68K-based designs. |
| Supply Voltage | 4.5V–5.5V single supply; eliminates need for external VPP programming voltage-simplifies board power design vs. older UV-erasable EPROMs. |
| Endurance | 10,000 program/erase cycles (min); qualified per JEDEC A117; sufficient for field firmware updates in industrial controllers with infrequent reprogramming. |
| Data Retention | 100 years (min); qualified per JEDEC A103; ensures long-term validity of stored configuration or calibration data without refresh. |
| Sector Size | Uniform 4 Kbyte sectors; allows granular firmware patching without erasing entire device-reduces update risk and downtime. |
| Standby Current | 100 µA (max, CMOS input); enables low-power hold state in battery-backed systems or sleep-mode embedded hosts. |
Pinout & Package
32-lead TSOP (Thin Small Outline Package) with standard x8 parallel Flash pinout; RoHS-compliant, industrial temperature grade (–40°C to +85°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A15 | Address Inputs | 16-bit address bus supporting full 128K-word addressing; A16 is NC for SST39SF010A (no higher address bits required). |
| DQ0–DQ7 | Data I/O | 8-bit bidirectional data bus; tri-stated when CE# or OE# is high; latched during write cycles for reliable byte programming. |
| CE# | Chip Enable | Active-low chip select; must be low for read/write operations; high-Z output state when deasserted reduces bus contention. |
| OE# | Output Enable | Active-low output gate; controls data bus drive independently of CE#, enabling shared-bus multiplexing in multi-device systems. |
| WE# | Write Enable | Active-low write strobe; initiates internal program/erase timing; supports both WE#- and CE#-controlled command sequences. |
| VDD / VSS | Power / Ground | Single 4.5V–5.5V supply; no separate VPP required-simplifies PCB layout and eliminates high-voltage generation circuitry. |
| NC (Pins 1, 30) | No Connection | Pin 1 and Pin 30 are unconnected for SST39SF010A; critical for correct footprint alignment-must not be tied to any net. |
Key Features
| Feature | Design Value |
|---|---|
| SuperFlash® Technology | Fixed 18 ms sector erase and 14 µs byte program times-eliminates software derating over lifetime, unlike floating-gate Flash. |
| JEDEC-Compliant Command Set | Standardized 3-byte (program) and 6-byte (erase) sequences ensure interoperability with existing Flash programming tools and boot ROM drivers. |
| Hardware + Software Data Protection | Glitch-resistant WE#/CE# inputs, VDD monitoring, and mandatory SDP command sequences prevent accidental writes during power transitions. |
| End-of-Write Detection | DQ6 Toggle Bit and DQ7 Data# Polling provide deterministic, non-blocking status feedback-enables concurrent host task execution during writes. |
| TTL-Compatible I/O | Direct interface with legacy 5V microcontrollers and FPGAs without level-shifting; VIH = 2.0V min, VOH = 2.4V min at 400 µA load. |
Applications
| Industrial PLC Firmware Storage | Legacy PC BIOS/UEFI Code Memory |
|---|---|
|
Use Scenario: Storing ladder logic firmware and I/O configuration in programmable logic controllers deployed in factory automation environments. IC Role / Device Role / Timing Role: Nonvolatile boot memory mapped to CPU address space; provides immediate code execution on power-up with 55 ns read latency. Use Value: 100-year data retention ensures firmware integrity across decades of unattended operation; sector erase enables field updates without full reflash. |
Use Scenario: Holding core boot firmware in desktop/server motherboards using legacy ISA/LPC bus interfaces. IC Role / Device Role / Timing Role: x8 parallel Flash acting as primary BIOS code store; accessed directly by chipset during POST sequence. Use Value: JEDEC pinout and command compatibility guarantees drop-in replacement for obsolete 27C010 EPROMs; 4.5V–5.5V operation matches legacy 5V rail requirements. |
| Medical Device Configuration Memory | Telecom Line Card Bootloader Storage |
|
Use Scenario: Retaining calibration tables, safety thresholds, and user preferences in FDA-cleared diagnostic equipment with long service life. IC Role / Device Role / Timing Role: Secure, write-protected configuration store accessed only during initialization or maintenance mode. Use Value: Hardware write-inhibit and SDP commands prevent unauthorized or accidental modification; 10,000-cycle endurance exceeds expected field update frequency. |
Use Scenario: Hosting bootloader code for DSP-based line cards in carrier-grade DSLAMs and optical transport systems. IC Role / Device Role / Timing Role: Primary boot image memory with fast read access to minimize system boot time after power cycling or firmware failover. Use Value: 55 ns access time meets tight timing budgets for real-time boot sequencing; uniform 4-Kbyte sectors allow safe patching of bootloader without corrupting active runtime code. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar parallel Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AM29LV010B-55EC | 55 ns access, 1-Mbit (128K × 8), but requires 3.0V–3.6V or 5V dual-supply option; lacks SuperFlash® fixed timing. | Used in newer 3.3V designs; not pin-compatible due to different VPP/VCC pin assignments and command set. | Select only if migrating to 3.3V systems; requires PCB redesign and firmware driver changes. |
| MX29LV010CTT-55G | 55 ns access, 1-Mbit, single 3.0V–3.6V supply; supports CFI query, but no hardware write-inhibit on WE#. | Targeted at 3.3V embedded systems with CFI-aware bootloaders; incompatible with 5V-only buses. | Not suitable for 5V legacy systems; requires voltage translation and updated initialization routines. |
Compared with AM29LV010B-55EC and MX29LV010CTT-55G, the SST39SF010A-55-4I-NHE-T uniquely supports true 5V-only operation with integrated hardware write protection and fixed-timing SuperFlash®-making it the only drop-in solution for maintaining legacy 5V parallel Flash designs without layout or firmware changes.
Availability
SST39SF010A-55-4I-NHE-T is available at Aetrix Electronics and suitable for industrial PLC firmware storage, legacy PC BIOS/UEFI code memory, and medical device configuration memory requiring stable component supply across extended product lifecycles.
Supply support for SST39SF010A-55-4I-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 Inc. is a global semiconductor company specializing in microcontrollers, analog devices, Flash memory, and security solutions for industrial, automotive, and consumer applications.
The SST39SF010A-55-4I-NHE-T belongs to Microchip's SST39SFx family of Multi-Purpose Flash devices, designed specifically to replace UV-erasable EPROMs and early Flash in cost-sensitive, 5V, parallel-interface embedded systems requiring long-term reliability and simple integration.
FAQ
What is the maximum operating temperature range for the SST39SF010A-55-4I-NHE-T?
The SST39SF010A-55-4I-NHE-T is rated for industrial temperature operation from –40°C to +85°C, as confirmed in Table 5-1 of the DS20005022F datasheet. This makes the SST39SF010A-55-4I-NHE-T suitable for deployment in harsh environments such as factory floors, outdoor telecom cabinets, and medical equipment enclosures where ambient thermal stability cannot be guaranteed.
Does the SST39SF010A-55-4I-NHE-T require an external VPP programming voltage?
No, the SST39SF010A-55-4I-NHE-T does not require an external VPP voltage. It performs all program and erase operations using only the main VDD supply (4.5V–5.5V), with internal charge pump generation. This eliminates the need for high-voltage circuitry on the PCB and simplifies system design compared to older EPROMs or early Flash devices that mandated 12V VPP.
How many address lines does the SST39SF010A-55-4I-NHE-T use, and what is the role of A16–A18?
The SST39SF010A-55-4I-NHE-T uses A0–A15 for full 128K-word addressing. Pins A16, A17, and A18 are marked NC (No Connection) for this specific variant, as stated in Figure 2-1 and Table 2-1. These pins are reserved for higher-density variants (SST39SF020A/SST39SF040) and must remain unconnected in SST39SF010A-55-4I-NHE-T designs to avoid functional conflict.
What software methods detect completion of a program or erase operation on the SST39SF010A-55-4I-NHE-T?
The SST39SF010A-55-4I-NHE-T supports two standardized software detection methods: Data# Polling (monitoring DQ7) and Toggle Bit (monitoring DQ6). Both are enabled after the rising edge of the fourth (program) or sixth (erase) WE# pulse. These mechanisms allow the host processor to poll asynchronously without blocking-critical for real-time systems where deterministic timing is required during firmware updates.
Is the SST39SF010A-55-4I-NHE-T pin-compatible with the SST39SF020A or SST39SF040?
No, the SST39SF010A-55-4I-NHE-T is not fully pin-compatible with SST39SF020A or SST39SF040. While all share the same 32-pin TSOP package and base pinout, A16 (Pin 2) is NC on SST39SF010A but functional on SST39SF020A, and A17 (Pin 30) is NC on SST39SF010A but functional on both higher-density variants. Interchanging them without verifying address pin usage risks incorrect addressing or bus contention.
SST39SF010A-55-4I-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:
- Active
- Programmable:
- Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH
- Memory Size:
- 1Mbit
- Memory Organization:
- 128K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 20µs
- Access Time:
- 55 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-PLCC (11.43x13.97)
SST39SF010A-55-4I-NHE-T FAQ
1.How can I place an order for SST39SF010A-55-4I-NHE-T through Aetrix?
Please submit a Request for Quotation (RFQ) for SST39SF010A-55-4I-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 SST39SF010A-55-4I-NHE-T reliable?
The price and inventory of SST39SF010A-55-4I-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 SST39SF010A-55-4I-NHE-T is usually 5 days.
3.What payment methods are accepted for SST39SF010A-55-4I-NHE-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST39SF010A-55-4I-NHE-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST39SF010A-55-4I-NHE-T?
SST39SF010A-55-4I-NHE-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST39SF010A-55-4I-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 SST39SF010A-55-4I-NHE-T?
For technical support, including SST39SF010A-55-4I-NHE-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST39SF010A-55-4I-NHE-T requirements.
6.How does Aetrix verify that SST39SF010A-55-4I-NHE-T is sourced from the original manufacturer or authorized distributors?
All SST39SF010A-55-4I-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 SST39SF010A-55-4I-NHE-T meets industry standards.
7.What is the process for return or replacement of SST39SF010A-55-4I-NHE-T?
All SST39SF010A-55-4I-NHE-T units undergo pre-shipment inspection (PSI). If there is an issue with SST39SF010A-55-4I-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 SST39SF010A-55-4I-NHE-T part is unused and in its original packaging.
Return procedure for SST39SF010A-55-4I-NHE-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SST39SF010A-55-4I-NHE-T Tags
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