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Microchip Technology SST39SF040-55-4C-NHE
- Part No.:
- SST39SF040-55-4C-NHE
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-LCC (J-Lead)
- Datasheet:
-
SST39SF040-55-4C-NHE.pdf
- Description:
- IC FLASH 4MBIT PARALLEL 32PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:578
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Product details
Overview
SST39SF040-55-4C-NHE 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® split-gate technology for high reliability in embedded firmware storage applications requiring field-upgradable code or configuration data.
For engineers reviewing the SST39SF040-55-4C-NHE datasheet, SST39SF040-55-4C-NHE pinout, SST39SF040-55-4C-NHE application, or SST39SF040-55-4C-NHE equivalent, key selection criteria include JEDEC-standard x8 parallel interface compatibility, hardware/software data protection, 100,000-cycle endurance, 100-year data retention, and support for byte program, sector erase, and chip erase operations under industrial temperature range (–40°C to +85°C).
Technical Context
The SST39SF040-55-4C-NHE uses SuperFlash® split-gate cell architecture with thick-oxide tunneling injector, enabling fixed erase/program times independent of cycle count. Its control logic supports standard microprocessor bus timing with CE#, OE#, and WE# inputs, latched address/data paths, and TTL-compatible I/Os.
Write status detection relies on two deterministic methods: Data# Polling (DQ7) and Toggle Bit (DQ6), both valid after defined WE#/CE# edge counts. Sector Erase and Chip Erase are initiated via six-byte JEDEC-compliant software command sequences, with internal VPP generation eliminating external high-voltage requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4 Mbit (512K × 8), directly maps to 512 KB of byte-addressable nonvolatile storage |
| Read Access Time | 55 ns - enables direct connection to 14 MHz system buses without wait states |
| Endurance | 100,000 program/erase cycles - supports frequent firmware updates over product lifetime |
| Data Retention | Greater than 100 years - ensures long-term data integrity without refresh |
| Supply Voltage | 4.5V–5.5V - compatible with standard 5V logic systems and tolerant of rail droop |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade embedded environments |
| Active Current | 10 mA typical at 14 MHz - low power consumption during execution-critical read bursts |
| Standby Current | 30 µA typical - minimal quiescent draw during system sleep modes |
Pinout & Package
Package: 32-lead TSOP (Thin Small Outline Package), RoHS compliant, surface-mountable with standard reflow profile.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A17 | Address Inputs | 18-bit address bus supporting full 512K-byte addressing; A17 is active (not NC) for SST39SF040 |
| DQ0–DQ7 | Data Input/Output | 8-bit bidirectional data bus with tri-state outputs controlled by CE# and OE# |
| CE# | Chip Enable | Active-low device select; places outputs in high-impedance state when deasserted |
| OE# | Output Enable | Active-low output gate; enables data read without deselecting chip |
| WE# | Write Enable | Active-low control for byte program, sector erase, and chip erase command latching |
| VDD | Power Supply | 4.5V–5.5V main supply; powers all internal logic and charge pumps |
| VSS | Ground | Reference return path for all signals and internal circuitry |
| NC | No Connection | Pins 1 and 30 are unconnected for SST39SF040 (A18 and A17 used instead) |
Key Features
| Feature | Design Value |
|---|---|
| SuperFlash® Technology | Split-gate cell design delivers fixed 18 ms sector erase and 70 ms chip erase times across full lifecycle |
| Uniform Sector Architecture | 128 sectors of 4 Kbytes each - enables granular firmware partitioning and safe over-the-air updates |
| Hardware + Software Protection | Glitch immunity (<5 ns), VDD power-up/down detection, and JEDEC-compliant 6-byte erase/program lockout |
| End-of-Write Detection | DQ6 toggle bit and DQ7 data polling provide deterministic, non-blocking status verification |
| TTL I/O Compatibility | Direct interface with 5V microcontrollers and FPGAs without level-shifting circuitry |
| RoHS Compliance | Lead-free TSOP package meets environmental regulations for global industrial deployment |
Applications
| Industrial PLC Firmware Storage | Medical Device Configuration Memory |
|---|---|
Use Scenario: Storing boot firmware and calibration tables in programmable logic controllers deployed in factory automation environments. IC Role / Device Role / Timing Role: Nonvolatile code storage with fast 55 ns read access and sector-level update capability to support runtime firmware patching. Use Value: Enables field-upgradable control logic without hardware replacement, reducing maintenance downtime and extending equipment service life. |
Use Scenario: Holding device-specific calibration coefficients and regulatory compliance parameters in portable diagnostic instruments. IC Role / Device Role / Timing Role: Secure, long-retention configuration memory with hardware write inhibit during power transitions to prevent corruption. Use Value: Guarantees data integrity over 100 years and 100,000 reprogramming cycles, meeting IEC 62304 safety requirements for Class B medical devices. |
| Telecom Base Station Bootloader | Automotive Infotainment System BIOS |
Use Scenario: Hosting primary bootloader and recovery image in wireless infrastructure equipment operating in extended temperature ranges. IC Role / Device Role / Timing Role: Industrial-temperature-rated (–40°C to +85°C) parallel Flash providing deterministic 55 ns read latency for rapid system initialization. Use Value: Eliminates need for external voltage regulators or timing margining, simplifying board design while ensuring cold-start reliability. |
Use Scenario: Storing UEFI firmware and display driver assets in automotive head units subject to thermal cycling and vibration. IC Role / Device Role / Timing Role: High-reliability Flash with SuperFlash® technology delivering consistent 18 ms sector erase regardless of accumulated wear. Use Value: Prevents firmware update failures due to increasing erase time - a known failure mode in conventional Flash technologies. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar parallel Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT49BV040-55TI | 4-Mbit (512K × 8), 55 ns access, but requires external VPP = 12V for programming; no internal charge pump | Lacks integrated high-voltage generation - mandates additional power circuitry and layout complexity | Choose only if legacy AT49BV family compatibility is required and external VPP sourcing is acceptable |
| S29GL032N90TFI010 | 32-Mbit (4M × 8), 90 ns access, 3.0V core supply, supports CFI query mode and wider command set | Higher density and lower voltage, but incompatible pinout and command protocol - not drop-in replaceable | Select for new designs needing >4 Mbit capacity or 3V operation; requires full hardware and firmware redesign |
Compared with AT49BV040-55TI and S29GL032N90TFI010, the SST39SF040-55-4C-NHE uniquely combines 5V-only operation, internal VPP generation, JEDEC x8 pinout, and fixed-timing SuperFlash® architecture - making it optimal for cost-sensitive, space-constrained industrial upgrades where minimal BOM change is critical.
Availability
SST39SF040-55-4C-NHE is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device configuration memory, telecom base station bootloader, and automotive infotainment system BIOS requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SST39SF040-55-4C-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, analog, FPGA, and memory solutions, serving industrial, automotive, and communications markets with vertically integrated silicon and software platforms.
The SST39SF040-55-4C-NHE belongs to Microchip's SST39SF Multi-Purpose Flash family, designed specifically for embedded systems requiring reliable, field-upgradable nonvolatile storage with minimal external components and deterministic timing behavior.
FAQ
What is the memory organization of the SST39SF040-55-4C-NHE?
The SST39SF040-55-4C-NHE is organized as 512K × 8, providing 4 Mbit (512 KB) of byte-addressable nonvolatile storage. This structure supports direct mapping to 8-bit microprocessor data buses and enables efficient firmware partitioning across its 128 uniform 4-Kbyte sectors.
Does the SST39SF040-55-4C-NHE require an external high-voltage supply for programming?
No. The SST39SF040-55-4C-NHE integrates an internal charge pump that generates the required programming voltage (VPP) from the single 4.5V–5.5V VDD supply. This eliminates the need for external high-voltage circuitry, simplifying board design and improving system reliability.
How does the SST39SF040-55-4C-NHE indicate completion of a byte program or erase operation?
The SST39SF040-55-4C-NHE provides two hardware-supported status detection methods: Data# Polling (monitoring DQ7) and Toggle Bit (monitoring DQ6). Both are valid after defined WE#/CE# edge counts and allow the host processor to perform other tasks while waiting for operation completion.
What is the maximum operating temperature range for the SST39SF040-55-4C-NHE?
The SST39SF040-55-4C-NHE is rated for industrial temperature operation from –40°C to +85°C. This specification is guaranteed per Microchip's DS20005022F datasheet and applies to all electrical and timing parameters under the specified 4.5V–5.5V supply conditions.
Is the SST39SF040-55-4C-NHE pin-compatible with earlier SST39SF010A or SST39SF020A devices?
No. While sharing the same 32-pin TSOP package and JEDEC x8 interface, the SST39SF040-55-4C-NHE uses A17 and A18 address lines (pins 30 and 1 respectively), whereas SST39SF010A leaves those pins as NC. Direct substitution requires PCB layout verification and firmware address-space adjustment.
SST39SF040-55-4C-NHE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- SST39 MPF™
- Package/Case:
- 32-LCC (J-Lead)
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-PLCC (11.43x13.97)
SST39SF040-55-4C-NHE FAQ
1.How can I place an order for SST39SF040-55-4C-NHE through Aetrix?
Please submit a Request for Quotation (RFQ) for SST39SF040-55-4C-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 SST39SF040-55-4C-NHE reliable?
The price and inventory of SST39SF040-55-4C-NHE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SST39SF040-55-4C-NHE is usually 5 days.
3.What payment methods are accepted for SST39SF040-55-4C-NHE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST39SF040-55-4C-NHE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST39SF040-55-4C-NHE?
SST39SF040-55-4C-NHE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST39SF040-55-4C-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 SST39SF040-55-4C-NHE?
For technical support, including SST39SF040-55-4C-NHE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST39SF040-55-4C-NHE requirements.
6.How does Aetrix verify that SST39SF040-55-4C-NHE is sourced from the original manufacturer or authorized distributors?
All SST39SF040-55-4C-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 SST39SF040-55-4C-NHE meets industry standards.
7.What is the process for return or replacement of SST39SF040-55-4C-NHE?
All SST39SF040-55-4C-NHE units undergo pre-shipment inspection (PSI). If there is an issue with SST39SF040-55-4C-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 SST39SF040-55-4C-NHE part is unused and in its original packaging.
Return procedure for SST39SF040-55-4C-NHE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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