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Microchip Technology SST39SF040-55-4C-NHE-T
- Part No.:
- SST39SF040-55-4C-NHE-T
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-LCC (J-Lead)
- Datasheet:
-
SST39SF040-55-4C-NHE-T.pdf
- Description:
- IC FLASH 4MBIT PARALLEL 32PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:2,084
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Product details
Overview
SST39SF040-55-4C-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, supports TTL I/O compatibility, and is used in embedded firmware storage, BIOS/UEFI code storage, and industrial controller configuration memory.
For engineers reviewing the SST39SF040-55-4C-NHE-T datasheet, SST39SF040-55-4C-NHE-T pinout, SST39SF040-55-4C-NHE-T application, or SST39SF040-55-4C-NHE-T equivalent, this page delivers verified electrical specs, JEDEC-standard x8 Flash command set compliance, sector-level erase timing (18 ms typ), byte program timing (14 µs typ), and hardware/software data protection mechanisms critical for secure, long-life nonvolatile memory deployment.
Technical Context
The SST39SF040-55-4C-NHE-T uses Microchip's proprietary SuperFlash® split-gate cell architecture with thick-oxide tunneling injector, enabling fixed erase/program times independent of cycle count-unlike conventional Flash technologies where timing degrades with endurance wear. Its control logic accepts standard microprocessor write sequences to initiate Byte Program, Sector Erase, or Chip Erase via JEDEC-compliant command sets.
It features dual end-of-write detection (Data# Polling on DQ7 and Toggle Bit on DQ6), latched address/data buses, and integrated VPP generation for internal high-voltage programming. Hardware protection includes noise/glitch immunity (<5 ns pulse rejection), VDD power-up/down detection (<2.5V inhibit), and write-inhibit mode via CE#/OE#/WE# states.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4 Mbit (512K × 8) - provides sufficient space for full firmware images or multi-region configuration tables in resource-constrained embedded systems. |
| Read Access Time | 55 ns - enables direct execution from flash (XIP) in 14 MHz bus systems without wait states. |
| Supply Voltage | 4.5V–5.5V - compatible with legacy 5V logic families and eliminates need for external voltage regulators. |
| Endurance | 10,000 cycles (min) - qualified per JEDEC A117, supporting field-updatable firmware with predictable lifetime. |
| Data Retention | 100 years (min) - ensures long-term data integrity in unpowered storage for industrial and automotive applications. |
| Sector Erase Time | 18 ms (typ) - allows rapid partial reprogramming without full chip erase, reducing update latency in OTA scenarios. |
| Byte Program Time | 14 µs (typ) - enables fine-grained updates (e.g., logging, parameter tuning) with minimal CPU blocking. |
| Standby Current | 30 µA (typ) - minimizes quiescent power in battery-backed or low-power sleep modes. |
Pinout & Package
32-lead TSOP (Thin Small Outline Package) with standard JEDEC x8 Flash pinout; pin 1 = NC/A18 (A18 active for SST39SF040), pin 30 = NC/A17 (A17 active), pin 32 = VDD, pin 16 = VSS.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A18 | Address Inputs | A0–A17 select byte location; A18 (pin 1) enables full 512K addressing for SST39SF040 (not present on smaller variants). |
| DQ0–DQ7 | Data I/O | Bidirectional 8-bit data bus; outputs tri-state when CE# or OE# high; latched during write cycles. |
| CE# | Chip Enable | Active-low chip select; device enters standby (30 µA) when high; required low for all operations. |
| OE# | Output Enable | Active-low output gate; controls data bus drive during read; high disables outputs to prevent bus contention. |
| WE# | Write Enable | Active-low control for program/erase; initiates command latching on falling edge; triggers internal timing on rising edge. |
| VDD / VSS | Power / Ground | Single 4.5V–5.5V supply; no separate VPP required-internal charge pump generates programming voltage. |
Key Features
| Feature | Design Value |
|---|---|
| SuperFlash® Technology | Fixed 14 µs byte program and 18 ms sector erase times across full endurance life-no software derating needed. |
| JEDEC-Compliant Command Set | Standardized 3-byte (program) and 6-byte (erase) sequences ensure interoperability with existing Flash drivers and boot ROMs. |
| Dual Write Completion Detection | Simultaneous Data# Polling (DQ7) and Toggle Bit (DQ6) allow flexible, non-blocking host polling without dedicated status registers. |
| Hardware + Software Data Protection | Glitch-resistant WE#/CE# inputs, VDD monitoring, and mandatory SDP command sequences prevent accidental writes during power transitions. |
| TTL I/O Compatibility | Direct interface with 5V microcontrollers and FPGAs-no level shifters required for address/data/control lines. |
| Uniform 4-Kbyte Sectors | 64 sectors enable granular firmware partitioning (e.g., bootloader, app, config) with independent erase control. |
Applications
| Industrial PLC Firmware Storage | Embedded BIOS/UEFI Code Storage |
|---|---|
|
Use Scenario: Storing and updating ladder logic firmware in programmable logic controllers operating in harsh factory environments. IC Role / Device Role / Timing Role: Nonvolatile code storage with sector-erase capability to preserve bootloader while updating application logic. Use Value: 100-year data retention and 10,000-cycle endurance ensure reliable operation over 15+ year product lifecycles without field replacement. |
Use Scenario: Holding core system firmware (BIOS/UEFI) in x86-based industrial PCs and thin clients. IC Role / Device Role / Timing Role: Primary boot memory mapped at reset vector; accessed via 55 ns read timing for fast cold boot. Use Value: 55 ns access time eliminates wait states on 14 MHz front-side bus, reducing boot time by up to 12% vs. 70 ns alternatives. |
| Medical Device Configuration Memory | Automotive ECU Calibration Storage |
|
Use Scenario: Storing user-configurable parameters (e.g., alarm thresholds, display language) in portable diagnostic equipment. IC Role / Device Role / Timing Role: Secure, low-power configuration store updated via serial interface with byte-program capability. Use Value: 30 µA standby current extends battery life in handheld devices; hardware/software write protection prevents corruption during brownout events. |
Use Scenario: Holding engine calibration maps and adaptive learning data in automotive engine control units (ECUs). IC Role / Device Role / Timing Role: Field-updatable calibration storage erased/reprogrammed via CAN-based diagnostics using sector-erase commands. Use Value: Uniform 4-Kbyte sectors allow selective map updates without erasing safety-critical bootloader or real-time control code. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT29LV040A-15JI | 4-Mbit, 150 ns access, 3.0V–3.6V supply only - requires level translation for 5V systems. | Limited to low-voltage designs; lacks 55 ns speed and 4.5V–5.5V compatibility. | Select only if system operates strictly at 3.3V and timing budget permits 150 ns reads. |
| MX29LV040CTTI-55G | 4-Mbit, 55 ns, 3.0V–3.6V supply - pin-compatible but not voltage-compatible with 5V buses. | Requires external level shifters for 5V microcontroller interfaces; higher standby current (50 µA). | Use only with 3.3V controllers; avoid in mixed-voltage or legacy 5V designs. |
Compared with AT29LV040A-15JI and MX29LV040CTTI-55G, the SST39SF040-55-4C-NHE-T uniquely supports direct 5V operation, 55 ns timing, and robust hardware write protection-making it the only drop-in solution for legacy industrial 5V systems requiring field-upgradable firmware.
Availability
SST39SF040-55-4C-NHE-T is available at Aetrix Electronics and suitable for industrial PLC firmware storage, embedded BIOS/UEFI code storage, and medical device configuration memory requiring stable component supply across extended product lifecycles.
Supply support for SST39SF040-55-4C-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 leading provider of microcontrollers, analog components, and Flash memory solutions, serving industrial, automotive, and consumer markets with vertically integrated silicon and software platforms.
The SST39SF040-55-4C-NHE-T belongs to Microchip's SST39SF Multi-Purpose Flash family, designed specifically for cost-sensitive, high-reliability embedded systems requiring secure, long-life, field-upgradable nonvolatile memory in standard 5V environments.
FAQ
What is the memory organization of the SST39SF040-55-4C-NHE-T?
The SST39SF040-55-4C-NHE-T is organized as 512K × 8 (4 Mbit), with 19 address lines (A0–A18) supporting full addressing. This structure enables direct byte-level access and aligns with JEDEC x8 Flash standards for seamless integration into 8-bit microcontroller systems. The SST39SF040-55-4C-NHE-T uses uniform 4-Kbyte sectors (64 total) for precise firmware partitioning.
Does the SST39SF040-55-4C-NHE-T require an external VPP voltage for programming?
No, the SST39SF040-55-4C-NHE-T integrates an internal charge pump that generates the high voltage required for programming and erasing, eliminating the need for an external VPP supply. It operates from a single 4.5V–5.5V VDD rail, simplifying board design and reducing BOM count. This feature is inherent to the SST39SF040-55-4C-NHE-T's SuperFlash® architecture.
How does the SST39SF040-55-4C-NHE-T indicate completion of a Byte Program operation?
The SST39SF040-55-4C-NHE-T provides two concurrent methods: Data# Polling (monitoring DQ7 for true data return) and Toggle Bit (observing toggling on DQ6 until it stabilizes). Both are valid after the rising edge of the fourth WE# or CE# pulse. These mechanisms allow the host processor to poll asynchronously without dedicated status registers-core to the SST39SF040-55-4C-NHE-T's efficient firmware update workflow.
What package type is used for the SST39SF040-55-4C-NHE-T?
The SST39SF040-55-4C-NHE-T is supplied in a 32-lead TSOP (Thin Small Outline Package) with standard JEDEC pinout. Pin 1 is A18 (active for 4-Mbit density), pin 30 is A17, and pins 32 and 16 are VDD and VSS respectively. This surface-mount package supports automated assembly and meets industrial thermal requirements.
Is the SST39SF040-55-4C-NHE-T RoHS compliant?
Yes, the SST39SF040-55-4C-NHE-T is RoHS compliant per Microchip's DS20005022F datasheet. All devices in the SST39SF010A/020A/040 family meet RoHS Directive 2011/65/EU requirements, including restrictions on lead, mercury, cadmium, hexavalent chromium, PBB, and PBDE. Compliance is verified through material declarations and third-party testing-confirmed for the SST39SF040-55-4C-NHE-T.
SST39SF040-55-4C-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:
- 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-T FAQ
1.How can I place an order for SST39SF040-55-4C-NHE-T through Aetrix?
Please submit a Request for Quotation (RFQ) for SST39SF040-55-4C-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 SST39SF040-55-4C-NHE-T reliable?
The price and inventory of SST39SF040-55-4C-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 SST39SF040-55-4C-NHE-T is usually 5 days.
3.What payment methods are accepted for SST39SF040-55-4C-NHE-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST39SF040-55-4C-NHE-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST39SF040-55-4C-NHE-T?
SST39SF040-55-4C-NHE-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST39SF040-55-4C-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 SST39SF040-55-4C-NHE-T?
For technical support, including SST39SF040-55-4C-NHE-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST39SF040-55-4C-NHE-T requirements.
6.How does Aetrix verify that SST39SF040-55-4C-NHE-T is sourced from the original manufacturer or authorized distributors?
All SST39SF040-55-4C-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 SST39SF040-55-4C-NHE-T meets industry standards.
7.What is the process for return or replacement of SST39SF040-55-4C-NHE-T?
All SST39SF040-55-4C-NHE-T units undergo pre-shipment inspection (PSI). If there is an issue with SST39SF040-55-4C-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 SST39SF040-55-4C-NHE-T part is unused and in its original packaging.
Return procedure for SST39SF040-55-4C-NHE-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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