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Microchip Technology SST39SF040-55-4I-NHE-T
- Part No.:
- SST39SF040-55-4I-NHE-T
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-LCC (J-Lead)
- Datasheet:
-
SST39SF040-55-4I-NHE-T.pdf
- Description:
- IC FLASH 4MBIT PARALLEL 32PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:1,429
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Product details
Overview
SST39SF040-55-4I-NHE-T from Microchip Technology is a 4-Mbit (512K × 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® technology for high reliability in embedded firmware storage, BIOS updates, and configuration memory applications.
For engineers reviewing the SST39SF040-55-4I-NHE-T datasheet, SST39SF040-55-4I-NHE-T pinout, SST39SF040-55-4I-NHE-T application, or SST39SF040-55-4I-NHE-T equivalent, key selection criteria include JEDEC-standard x8 parallel interface compatibility, hardware/software data protection, 100,000-cycle endurance, and industrial temperature range support.
Technical Context
This device belongs to Microchip's SST39SF family of parallel-interface flash memories using split-gate SuperFlash® technology. Its architecture features latched address/data buses, TTL-compatible I/Os, and dual write-status detection via Toggle Bit (DQ6) and Data# Polling (DQ7).
It supports Byte Program (≤10 µs), Sector Erase (≤25 ms), and Chip Erase (≤100 ms) operations under JEDEC-standard command sequences. All erase/program timing is fixed and independent of cycle count, eliminating software derating over lifetime.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4 Mbit (512K × 8) - provides sufficient space for boot code, firmware images, and system configuration tables in resource-constrained embedded systems. |
| Read Access Time | 55 ns - enables direct execution from flash (XIP) in microcontroller-based systems without performance penalty at 14 MHz bus speeds. |
| Supply Voltage | 4.5V–5.5V - compatible with legacy 5V logic families and eliminates need for external voltage regulators in industrial control designs. |
| Endurance | 10,000 cycles minimum (JEDEC A117) - supports field-updatable firmware with guaranteed reprogramming capability across product lifecycle. |
| Data Retention | 100 years minimum (JEDEC A103) - ensures long-term integrity of calibration data, serial numbers, and security keys in unpowered storage. |
| Operating Temp | −40°C to +85°C - qualified for industrial environments including motor drives, PLCs, and outdoor communications equipment. |
| Package | 32-lead TSOP (Type I, 12 × 20 mm) - surface-mount footprint optimized for automated assembly and thermal management in dense PCB layouts. |
Pinout & Package
32-lead Thin Small Outline Package (TSOP Type I), standard pinout per JEDEC MO-142, 12 mm × 20 mm body, 0.5 mm lead pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A18 | Address Inputs | A0–A17 used for full 512K addressing; A18 is active and selects upper half of memory array (SST39SF040-specific). |
| DQ0–DQ7 | Data I/O | Bidirectional 8-bit data bus with tri-state outputs controlled by CE# and OE#; supports latched read/write transfers. |
| CE# | Chip Enable | Active-low chip select; device enters standby (30 µA) when high, enabling low-power system sleep modes. |
| OE# | Output Enable | Active-low output gate; allows shared bus operation with other peripherals without contention. |
| WE# | Write Enable | Active-low control for program/erase; initiates internal timing and command sequence validation. |
| VDD / VSS | Power / Ground | Single 4.5V–5.5V supply; no separate VPP required due to on-chip charge pump for programming voltage generation. |
Key Features
| Feature | Design Value |
|---|---|
| SuperFlash® Technology | Fixed erase/program times independent of accumulated cycles - eliminates firmware runtime adjustments and improves deterministic system behavior. |
| Uniform 4-Kbyte Sectors | 64 individually erasable sectors - enables granular firmware updates without disturbing adjacent application code or configuration data. |
| Hardware + Software Protection | No-write-on-power-up default with 5555H/2AAAH unlock sequence - prevents corruption during brown-out, reset, or hot-plug events. |
| Toggle Bit & Data# Polling | Asynchronous status reporting via DQ6/DQ7 - frees CPU during erase/program, enabling background task execution without polling overhead. |
| JEDEC x8 Pinout Compliance | Drop-in replacement for industry-standard 5V flash parts - simplifies migration from older devices without PCB redesign. |
Applications
| Industrial PLC Firmware Storage | Medical Device Configuration Memory |
|---|---|
Use Scenario: Storing ladder logic programs and I/O mapping tables in programmable logic controllers operating in factory-floor environments with wide temperature swings and EMI exposure. IC Role / Device Role / Timing Role: Nonvolatile program memory accessed via 8-bit parallel bus; executes XIP during boot and supports field updates via RS-485 or Ethernet interfaces. Use Value: 100-year data retention ensures calibration constants and safety-critical parameters remain intact across decades of unpowered storage. | Use Scenario: Holding device-specific calibration coefficients, user preferences, and regulatory compliance logs in portable diagnostic equipment requiring FDA-grade traceability. IC Role / Device Role / Timing Role: Configuration EEPROM replacement with faster write throughput and higher endurance than traditional serial EEPROMs. Use Value: 10,000-cycle endurance supports daily recalibration routines over 27+ years of clinical use without wear-out risk. |
| Telecom Base Station Boot Code | Automotive Infotainment System BIOS |
Use Scenario: Hosting bootloader and FPGA configuration bitstreams in outdoor wireless infrastructure units exposed to −40°C cold starts and solar-heated enclosures. IC Role / Device Role / Timing Role: Primary boot memory mapped to microprocessor address space; read-access latency ≤55 ns meets real-time initialization timing budgets. Use Value: Industrial temperature rating (−40°C to +85°C) and 4.5V–5.5V supply tolerance ensure reliable startup under brown-out conditions common in remote power grids. | Use Scenario: Storing UEFI firmware, display drivers, and audio codec initialization sequences in automotive head units subject to vibration, thermal cycling, and ESD events. IC Role / Device Role / Timing Role: Secure firmware vault with hardware write inhibit and software lock; accessed only during cold boot or OTA update windows. Use Value: On-chip hardware protection (noise/glitch filtering, VDD monitoring) prevents accidental writes during ignition transients or battery disconnect events. |
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 |
|---|---|---|---|
| AM29LV040B-55REI | 4-Mbit, 55 ns, 3.0V–3.6V supply - requires level-shifting for 5V systems; lacks SuperFlash® fixed-timing guarantee. | Best suited for newer 3.3V designs where voltage translation is already present; not drop-in for legacy 5V buses. | Select only if migrating entire system to 3.3V; verify timing margins with actual board trace lengths and loading. |
| MX29LV040CTTI-55G | 4-Mbit, 55 ns, 3.0V–3.6V supply; JEDEC-compliant but uses different command set - no software compatibility with SST39SF040. | Requires full firmware rewrite for command sequencing; suitable for greenfield 3.3V designs prioritizing second-source availability. | Choose only with full software revalidation; avoid for drop-in replacements or field-update compatibility requirements. |
Compared with AM29LV040B-55REI and MX29LV040CTTI-55G, the SST39SF040-55-4I-NHE-T delivers native 5V operation, guaranteed fixed erase/program timing, and seamless JEDEC command compatibility - making it the optimal choice for maintaining legacy 5V embedded systems with minimal firmware or hardware changes.
Availability
SST39SF040-55-4I-NHE-T is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device configuration memory, and telecom base station boot code requiring stable component supply and long-term obsolescence management.
Supply support for SST39SF040-55-4I-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 components, and nonvolatile memory solutions for embedded control applications.
The SST39SF040-55-4I-NHE-T belongs to Microchip's Multi-Purpose Flash (MPF) product line, designed specifically for cost-sensitive, high-reliability embedded systems requiring field-upgradable firmware and configuration storage without external high-voltage programming circuitry.
FAQ
What is the maximum byte program time specification for SST39SF040-55-4I-NHE-T?
The SST39SF040-55-4I-NHE-T has a maximum byte program time of 10 µs per JEDEC-standard testing conditions (Table 7-2). This value is guaranteed across the full industrial temperature range and represents worst-case timing for any byte within the memory array. The SST39SF040-55-4I-NHE-T achieves this using on-chip charge pump circuitry, eliminating external VPP requirements.
Does SST39SF040-55-4I-NHE-T support sector erase, and what is the sector size?
Yes, the SST39SF040-55-4I-NHE-T supports uniform sector erase with each sector sized at exactly 4 Kbytes. The device contains 64 such sectors, enabling selective erasure of firmware modules or configuration blocks without affecting unrelated memory regions. Sector addresses are selected using A12 and lower address lines during the six-byte erase command sequence.
What package type is used for SST39SF040-55-4I-NHE-T, and is it RoHS compliant?
The SST39SF040-55-4I-NHE-T is supplied in a 32-lead TSOP (Thin Small Outline Package) Type I, with dimensions 12 mm × 20 mm and 0.5 mm lead pitch. All units are fully RoHS compliant per Microchip's DS20005022F datasheet, meeting Directive 2011/65/EU requirements for hazardous substance restrictions.
How does SST39SF040-55-4I-NHE-T indicate completion of an erase or program operation?
The SST39SF040-55-4I-NHE-T provides two hardware-supported status detection methods: Toggle Bit (DQ6) toggles between 0 and 1 during internal operations and stops upon completion; Data# Polling (DQ7) returns complemented data during writes and true data after completion. Both are valid after the fourth (program) or sixth (erase) WE# pulse rising edge.
What is the endurance rating and data retention specification for SST39SF040-55-4I-NHE-T?
The SST39SF040-55-4I-NHE-T is rated for a minimum of 10,000 erase/program cycles per JEDEC Standard A117 and guarantees greater than 100 years of data retention per JEDEC Standard A103. These values are validated across the full industrial temperature range (−40°C to +85°C) and represent worst-case specifications under accelerated life testing conditions.
SST39SF040-55-4I-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:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH
- Memory Size:
- 4Mbit
- Memory Organization:
- 512K 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)
SST39SF040-55-4I-NHE-T FAQ
1.How can I place an order for SST39SF040-55-4I-NHE-T through Aetrix?
Please submit a Request for Quotation (RFQ) for SST39SF040-55-4I-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 SST39SF040-55-4I-NHE-T reliable?
The price and inventory of SST39SF040-55-4I-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 SST39SF040-55-4I-NHE-T is usually 5 days.
3.What payment methods are accepted for SST39SF040-55-4I-NHE-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST39SF040-55-4I-NHE-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST39SF040-55-4I-NHE-T?
SST39SF040-55-4I-NHE-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST39SF040-55-4I-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 SST39SF040-55-4I-NHE-T?
For technical support, including SST39SF040-55-4I-NHE-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST39SF040-55-4I-NHE-T requirements.
6.How does Aetrix verify that SST39SF040-55-4I-NHE-T is sourced from the original manufacturer or authorized distributors?
All SST39SF040-55-4I-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 SST39SF040-55-4I-NHE-T meets industry standards.
7.What is the process for return or replacement of SST39SF040-55-4I-NHE-T?
All SST39SF040-55-4I-NHE-T units undergo pre-shipment inspection (PSI). If there is an issue with SST39SF040-55-4I-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 SST39SF040-55-4I-NHE-T part is unused and in its original packaging.
Return procedure for SST39SF040-55-4I-NHE-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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