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Microchip Technology SST39LF512-45-4C-NHE
- Part No.:
- SST39LF512-45-4C-NHE
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-LCC (J-Lead)
- Datasheet:
-
SST39LF512-45-4C-NHE.pdf
- Description:
- IC FLASH 512KBIT PARALLEL 32PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:2,307
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Product details
Overview
SST39LF512-45-4C-NHE from Microchip Technology (formerly Silicon Storage Technology) is a 512 Kbit (64K × 8) CMOS Multi-Purpose Flash memory IC with JEDEC-standard x8 parallel interface, 3.0–3.6 V single-supply operation, 55 ns read access time, and uniform 4 KB sector-erase architecture. It serves as nonvolatile program/data storage in embedded microcontroller systems requiring field-upgradable firmware.
For engineers reviewing the SST39LF512-45-4C-NHE datasheet, SST39LF512-45-4C-NHE pinout, SST39LF512-45-4C-NHE application, or SST39LF512-45-4C-NHE equivalent, key selection criteria include its 3.0–3.6 V write voltage range, SuperFlash® technology-based 100,000-cycle endurance, 100-year data retention, PLCC-32 package compatibility, and software/hardware data protection schemes.
Technical Context
This device implements SST's proprietary SuperFlash® technology with split-gate cell design and thick-oxide tunneling injector, enabling fixed erase/program times independent of cycle count-unlike conventional flash where timing degrades over endurance life. Its command set follows JEDEC-standard pinouts and software protocols for Byte-Program, Sector-Erase, Chip-Erase, and Software Product Identification.
Operation relies on three control signals-CE#, OE#, and WE#-with latched address/data bus, tri-state outputs, and dual end-of-write detection via Data# Polling (DQ7) and Toggle Bit (DQ6). It supports both WE#- and CE#-controlled timing modes and requires a six-byte software unlock sequence for all erase operations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 512 Kbit (64K × 8), directly maps to 64 KB of byte-addressable nonvolatile storage space |
| Read Access Time | 55 ns maximum - enables direct execution from flash (XIP) in 14 MHz bus systems without wait states |
| Supply Voltage | 3.0–3.6 V for all operations - eliminates need for external VPP pump; compatible with 3.3 V logic rails |
| Endurance | 100,000 program/erase cycles per sector - supports frequent firmware updates in industrial controllers |
| Data Retention | Greater than 100 years at 25°C - ensures long-term reliability in unattended equipment |
| Byte-Program Time | 14 µs typical - allows rapid patching of individual configuration bytes without full-sector overhead |
| Sector Size | Uniform 4 KB sectors - simplifies memory management and enables granular firmware partitioning |
Pinout & Package
Package: 32-lead Plastic Leaded Chip Carrier (PLCC), RoHS-compliant, surface-mountable with standard reflow profile (260°C/10 s).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A15 | Address Inputs | 16-bit address bus supporting full 64K address space; A12–A15 select 4 KB sector during erase |
| DQ0–DQ7 | Data I/O | Bi-directional 8-bit data bus; outputs tri-stated when CE# or OE# high; DQ6/DQ7 used for status polling |
| CE# | Chip Enable | Active-low chip select; must be low to enable read/write; controls internal state machine activation |
| OE# | Output Enable | Active-low output gate; separates read timing control from chip selection; enables shared bus operation |
| WE# | Write Enable | Active-low write strobe; latches address/data and initiates internal program/erase sequences |
| VDD | Power Supply | 3.0–3.6 V supply; powers core logic and charge pumps; internally generates programming voltage |
| VSS | Ground | Reference return path for all I/O and core circuitry; decoupling required per JEDEC layout guidelines |
| NC | No Connect | Pins 12, 16, 24, and 31 are unconnected - must remain floating or grounded per PCB design rules |
Key Features
| Feature | Design Value |
|---|---|
| SuperFlash® Technology | Split-gate cell with thick-oxide injector delivers stable 55 ns read and 14 µs program times across full 100k-cycle life |
| Software Data Protection | JEDEC-compliant 3-byte (program) or 6-byte (erase) unlock sequence prevents accidental writes during power transitions |
| Hardware Write Inhibit | Automatic lockout when VDD < 1.5 V, or if WE#/CE#/OE# violate valid timing windows - no external supervision needed |
| End-of-Write Detection | DQ6 toggle bit and DQ7 data-polling provide deterministic, software-driven completion signaling without timer polling overhead |
| Uniform Sector Architecture | 128 × 4 KB sectors simplify bootloader design, enable atomic firmware updates, and reduce wear-leveling complexity |
Applications
| Industrial PLC Firmware Storage | Medical Device Configuration Memory |
|---|---|
Use Scenario: Storing and updating ladder logic firmware in programmable logic controllers deployed in factory automation environments. IC Role / Device Role / Timing Role: Nonvolatile code storage with in-system reprogrammability; executes XIP during runtime; supports field upgrades via RS-485 or Ethernet interface. Use Value: Enables remote firmware patches without hardware replacement; 100,000-cycle endurance accommodates quarterly updates over 27+ years. | Use Scenario: Holding calibrated sensor offsets, user preferences, and regulatory audit logs in portable diagnostic equipment. IC Role / Device Role / Timing Role: Parameter/configuration EEPROM replacement; accessed only during boot or settings change; retains data through battery removal. Use Value: Eliminates external EEPROM; 100-year data retention meets FDA 21 CFR Part 11 long-term recordkeeping requirements. |
| Automotive Body Control Module | Networking Equipment Bootloader Image |
Use Scenario: Storing lighting control algorithms and CAN message routing tables in vehicle body domain controllers. IC Role / Device Role / Timing Role: Read-mostly code storage; programmed once at assembly and updated only during dealership service flashes. Use Value: 3.0–3.6 V operation matches automotive 3.3 V supply rails; -40°C to +85°C industrial grade variant (SST39VF512) available for extended temp support. | Use Scenario: Hosting primary bootloader image that initializes DDR, loads Linux kernel, and validates firmware signatures in enterprise switches. IC Role / Device Role / Timing Role: First-stage boot memory mapped at reset vector; read-access critical to system startup latency. Use Value: 55 ns access time reduces boot time by ~12 ms vs. 70 ns alternatives; uniform sectors allow secure signed-image partitioning. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT29LV512-20PU | 200 ns read access; 2.7–3.6 V operation; 10,000-cycle endurance; PLCC-32 package | Slower timing limits XIP use; lower endurance restricts update frequency | Select when cost sensitivity outweighs performance; verify timing margins in 14 MHz systems |
| MX29LV512CTTI-45G | 45 ns read access; 3.0–3.6 V; 100,000-cycle endurance; TSOP-32 package (not PLCC) | Same speed and endurance but different footprint; requires PCB redesign | Choose for space-constrained designs where TSOP-32 is preferred; confirm thermal pad handling |
Compared with AT29LV512-20PU and MX29LV512CTTI-45G, the SST39LF512-45-4C-NHE offers superior combination of 55 ns speed, proven SuperFlash® reliability, and drop-in PLCC-32 compatibility - making it optimal for legacy board refreshes requiring zero layout change and guaranteed firmware update longevity.
Availability
SST39LF512-45-4C-NHE is available at Aetrix Electronics and suitable for industrial control systems, medical diagnostics equipment, automotive electronics, and networking infrastructure requiring stable component supply and long-lifecycle support.
Supply support for SST39LF512-45-4C-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 acquired Silicon Storage Technology (SST) in 2016 and continues to manufacture, support, and qualify legacy SST flash products under its quality and longevity assurance programs.
The SST39LF/VF series was designed specifically for cost-sensitive, high-reliability embedded applications requiring field-upgradable nonvolatile storage - emphasizing ease of integration, JEDEC compliance, and robustness across temperature and voltage variations.
FAQ
What is the operating voltage range for SST39LF512-45-4C-NHE?
The SST39LF512-45-4C-NHE operates within a strict 3.0–3.6 V supply range for all read, program, and erase functions. This single-supply requirement eliminates external VPP generation circuitry and ensures compatibility with standard 3.3 V logic systems. Operation below 3.0 V disables write functionality and may cause undefined behavior during active programming.
Does SST39LF512-45-4C-NHE support sector-erase only, or also chip-erase?
The SST39LF512-45-4C-NHE supports both sector-erase (128 × 4 KB sectors) and chip-erase operations. Sector-erase takes 18 ms typical and enables targeted updates; chip-erase completes in 70 ms typical and resets the entire 64K × 8 array to FFh. Both require the same six-byte software unlock sequence before execution.
How is write completion detected on SST39LF512-45-4C-NHE?
Write completion on SST39LF512-45-4C-NHE is detected using two hardware-supported methods: Data# Polling (monitoring DQ7 toggling state) and Toggle Bit (observing DQ6 transition between 0 and 1). Both are valid after the fourth (program) or sixth (erase) WE# pulse and eliminate need for fixed delay loops in host firmware.
Is SST39LF512-45-4C-NHE pin-compatible with other devices in the SST39LF/VF family?
Yes - SST39LF512-45-4C-NHE shares identical PLCC-32 pinout, command set, and timing parameters with SST39LF010/020 and SST39VF010/020/040 variants. Address bus width scales with density (A0–A15 for 512 Kbit), but pin functions, control signal behavior, and software protocol remain fully consistent across the family.
What package type does SST39LF512-45-4C-NHE use, and is it RoHS-compliant?
SST39LF512-45-4C-NHE uses a 32-lead Plastic Leaded Chip Carrier (PLCC) package with standard 0.050" lead pitch and gull-wing leads. It is fully RoHS-compliant per EU Directive 2011/65/EU, with lead-free terminations and halogen-free molding compound, qualified for surface-mount reflow up to 260°C for 10 seconds.
SST39LF512-45-4C-NHE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- SST39 MPF™
- Package/Case:
- 32-LCC (J-Lead)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH
- Memory Size:
- 512Kbit
- Memory Organization:
- 64K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 20µs
- Access Time:
- 45 ns
- Voltage - Supply:
- 2.7V ~ 3.6V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-PLCC (11.43x13.97)
SST39LF512-45-4C-NHE FAQ
1.How can I place an order for SST39LF512-45-4C-NHE through Aetrix?
Please submit a Request for Quotation (RFQ) for SST39LF512-45-4C-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 SST39LF512-45-4C-NHE reliable?
The price and inventory of SST39LF512-45-4C-NHE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SST39LF512-45-4C-NHE is usually 5 days.
3.What payment methods are accepted for SST39LF512-45-4C-NHE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST39LF512-45-4C-NHE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST39LF512-45-4C-NHE?
SST39LF512-45-4C-NHE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST39LF512-45-4C-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 SST39LF512-45-4C-NHE?
For technical support, including SST39LF512-45-4C-NHE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST39LF512-45-4C-NHE requirements.
6.How does Aetrix verify that SST39LF512-45-4C-NHE is sourced from the original manufacturer or authorized distributors?
All SST39LF512-45-4C-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 SST39LF512-45-4C-NHE meets industry standards.
7.What is the process for return or replacement of SST39LF512-45-4C-NHE?
All SST39LF512-45-4C-NHE units undergo pre-shipment inspection (PSI). If there is an issue with SST39LF512-45-4C-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 SST39LF512-45-4C-NHE part is unused and in its original packaging.
Return procedure for SST39LF512-45-4C-NHE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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