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Microchip Technology SST39LF010-55-4C-WHE
- Part No.:
- SST39LF010-55-4C-WHE
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-TFSOP (0.488", 12.40mm Width)
- Datasheet:
-
SST39LF010-55-4C-WHE.pdf
- Description:
- IC FLASH 1MBIT PARALLEL 32TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,416
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Product details
Overview
SST39LF010-55-4C-WHE from Microchip Technology (formerly Silicon Storage Technology) is a 1 Mbit (128K × 8) CMOS Multi-Purpose Flash memory IC with 55 ns read access time, single 3.0–3.6 V supply for read/write operations, and JEDEC-standard x8 parallel interface. It features uniform 4 KB sectors, 100,000 program/erase cycles endurance, and >100 years data retention - deployed in embedded firmware storage, BIOS code storage, and industrial controller configuration memory.
For engineers reviewing the SST39LF010-55-4C-WHE datasheet, SST39LF010-55-4C-WHE pinout, SST39LF010-55-4C-WHE application, or SST39LF010-55-4C-WHE equivalent, key selection criteria include its 32-pin PLCC package, 55 ns read timing, hardware/software write protection, sector-erase capability, and compatibility with legacy 8-bit microcontroller buses requiring nonvolatile program storage with fast byte-program (14 µs typical) and chip-erase (70 ms typical).
Technical Context
This device implements SST's proprietary SuperFlash technology with split-gate cell architecture and thick-oxide tunneling injector, enabling fixed erase/program times independent of cycle count - eliminating software de-rating over lifetime. It operates in standard parallel x8 mode with latched address/data, using CE#, OE#, and WE# control signals per JEDEC pinout conventions.
Write operations require a three-byte software data protection (SDP) sequence for byte-program and six-byte sequences for sector/chip-erase. End-of-write detection is supported via Data# Polling (DQ7) and Toggle Bit (DQ6), both valid after defined WE#/CE# edge counts - enabling efficient host polling without fixed delay loops.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 1 Mbit (128K × 8) - supports full firmware images up to 128 KB in 8-bit bus systems. |
| Read Access Time | 55 ns - enables direct execution (XIP) from flash on microcontrollers with ≤18 MHz bus clocks. |
| Supply Voltage | 3.0–3.6 V - compatible with 3.3 V logic systems; no external VPP required due to internal charge pump. |
| Endurance | 100,000 program/erase cycles - sufficient for field firmware updates across 10+ years of industrial deployment. |
| Data Retention | >100 years - ensures long-term reliability in unpowered storage of calibration data or boot code. |
| Byte-Program Time | 14 µs typical - allows rapid patching of individual configuration bytes without full-sector erase overhead. |
| Sector Size | 4 KB uniform sectors - simplifies wear leveling and partial firmware update management in resource-constrained hosts. |
Pinout & Package
Package: 32-lead PLCC (Plastic Leaded Chip Carrier), RoHS-compliant, 11.43 mm × 11.43 mm body size.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | A0–A16 select 128K addresses; A16 is most significant (AMS) for SST39LF010; unused pins (A17/A18) are NC. |
| DQ0–DQ7 | Data I/O | Bidirectional 8-bit data bus; tri-stated when CE# or OE# is high; latched during write cycles. |
| CE# | Chip Enable | Active-low chip select; device enters standby (1 µA) when high; required low for all operations. |
| OE# | Output Enable | Active-low output gate; controls DQ bus drive during read; high = high-impedance state. |
| WE# | Write Enable | Active-low write strobe; initiates latching of address/data and triggers internal program/erase timing. |
| VDD | Power Supply | +3.0–3.6 V supply; powers core logic and internal VPP generator for erase/program. |
| VSS | Ground | Reference ground for all signals and power; must be low-impedance connection. |
| NC | No Connection | Pins A17, A18, and two package pads are unconnected - must remain floating or grounded per layout guidelines. |
Key Features
| Feature | Design Value |
|---|---|
| SuperFlash Technology | Split-gate cell + thick-oxide injector delivers stable 55 ns read and 14 µs byte-program times across full lifecycle - no performance degradation with use. |
| Hardware Write Inhibit | Glitch immunity (<5 ns), VDD power-up/down detection (<1.5 V lockout), and OE#/CE#/WE# control prevent spurious writes during reset or brownout. |
| Software Data Protection | JEDEC-compliant 3-byte (program) and 6-byte (erase) command sequences - mandatory before any non-read operation, shipped enabled by default. |
| Uniform Sector Architecture | 32 × 4 KB sectors - enables precise firmware patching and eliminates need for complex block management in bootloader code. |
| End-of-Write Detection | DQ7 (Data# Polling) and DQ6 (Toggle Bit) provide deterministic, bus-compatible status reporting - eliminates fixed timeout delays in host firmware. |
Applications
| Industrial PLC Firmware Storage | Legacy PC BIOS Code Storage |
|---|---|
Use Scenario: Storing and updating ladder logic firmware in programmable logic controllers operating in factory-floor environments with wide temperature swings and electrical noise. IC Role / Device Role / Timing Role: Nonvolatile program memory mapped to microcontroller address space; accessed via 8-bit parallel bus with 55 ns read latency to support real-time scan cycle execution. Use Value: 100,000-cycle endurance and >100-year retention ensure firmware integrity across decades of unattended operation without battery backup. | Use Scenario: Holding POST routines and system configuration data in desktop motherboards using ISA/LPC-compatible 8-bit memory interfaces. IC Role / Device Role / Timing Role: Boot ROM replacement with JEDEC-standard pinout and command set - directly compatible with legacy BIOS chipsets and programming tools. Use Value: 3.3 V single-supply operation eliminates level-shifting components; 4 KB sector erase enables selective CMOS setup parameter updates without full BIOS reflash. |
| Medical Device Configuration Memory | Automotive Body Control Module (BCM) Calibration Storage |
Use Scenario: Storing device-specific calibration tables and safety-critical operational parameters in portable diagnostic equipment requiring regulatory traceability and long-term stability. IC Role / Device Role / Timing Role: Secure, write-protected configuration store accessed during power-on initialization; protected by hardware inhibit and SDP commands. Use Value: Hardware + software dual-protection prevents accidental overwrite during service; >100-year retention meets FDA 21 CFR Part 11 archival requirements. | Use Scenario: Holding vehicle-specific lighting profiles, window lift algorithms, and sensor offset values in BCMs exposed to automotive temperature (-40°C to +85°C) and vibration stress. IC Role / Device Role / Timing Role: Robust nonvolatile memory interfaced to 8-bit MCU peripherals; operates reliably across full commercial temperature range (0°C to +70°C) per datasheet spec. Use Value: 32-pin PLCC package offers mechanical stability under thermal cycling; uniform 4 KB sectors simplify OTA update partitioning for ECU software revisions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AM29LV010B-55EC | 55 ns access, 1 Mbit (128K × 8), 3.0–3.6 V, but uses AMD's CFI command set and requires different unlock sequences. | Lacks integrated toggle-bit polling; relies on Ready/Busy pin (RB#) - requires additional PCB routing and GPIO allocation. | Choose AM29LV010B-55EC only if existing firmware already implements AMD CFI protocol and RB# handshaking. |
| MX29LV160ETTI-55G | 16 Mbit density (2M × 8), 55 ns, 2.7–3.6 V, supports both x8/x16 modes - not pin-compatible; larger die and different pin mapping. | Offers wider voltage range and higher density but requires PCB redesign and firmware adaptation for extended addressing. | Select MX29LV160ETTI-55G only when upgrading capacity and accepting board-level changes; not a drop-in replacement. |
Compared with AM29LV010B-55EC and MX29LV160ETTI-55G, the SST39LF010-55-4C-WHE provides guaranteed 55 ns read timing at 3.3 V with JEDEC-standard command set, unified software polling (DQ6/DQ7), and true 32-pin PLCC pinout - making it optimal for cost-sensitive, footprint-constrained legacy designs requiring zero hardware modification.
Availability
SST39LF010-55-4C-WHE is available at Aetrix Electronics and suitable for industrial PLC firmware storage, legacy PC BIOS code storage, and medical device configuration memory requiring stable component supply and long-term obsolescence support.
Supply support for SST39LF010-55-4C-WHE 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 maintains full support for the SuperFlash product family, including technical documentation, validation, and long-term manufacturing commitment.
The SST39LF series was designed specifically for cost-effective, high-reliability parallel NOR flash applications in industrial, computing, and automotive systems where JEDEC compatibility, predictable timing, and robust write protection are essential.
FAQ
What is the operating temperature range for SST39LF010-55-4C-WHE?
The SST39LF010-55-4C-WHE is specified for commercial temperature operation from 0°C to +70°C. It is not rated for industrial (-40°C to +85°C) use - that range applies only to the SST39VF variant family. The 'C' suffix in SST39LF010-55-4C-WHE explicitly denotes commercial grade, and this is confirmed in Table 5 of the DS25023B datasheet.
Does SST39LF010-55-4C-WHE require an external VPP voltage for programming?
No, the SST39LF010-55-4C-WHE does not require an external VPP voltage. It integrates an internal charge pump that generates the necessary high-voltage programming signal from the single 3.0–3.6 V VDD supply - a key feature of SST's SuperFlash architecture documented in the "Automatic Write Timing" section of the datasheet.
How many address lines does SST39LF010-55-4C-WHE use, and what is the role of A17/A18?
The SST39LF010-55-4C-WHE uses address lines A0–A16 (17 total) to access its 128K × 8 array. Per Table 1 and Figure 2, A17 and A18 are No Connect (NC) pins for this device - they are only used by higher-density variants (SST39LF020 uses A17; SST39LF040 uses A18). The datasheet explicitly states "AMS = A16 for SST39LF/VF010".
Can SST39LF010-55-4C-WHE be used in a 3.3 V system with 5 V tolerant I/O?
No, the SST39LF010-55-4C-WHE is not 5 V tolerant. Its absolute maximum input voltage is VDD + 0.5 V (i.e., max 4.1 V at 3.6 V VDD), and VIH is specified as 0.7×VDD - meaning 2.1 V minimum high-level input at 3.0 V VDD. Interfacing with 5 V logic requires level translation, as confirmed in the "DC Operating Characteristics" table (Table 8) and Absolute Maximum Ratings.
What is the purpose of the 'WHE' suffix in SST39LF010-55-4C-WHE?
The 'WHE' suffix denotes the package and environmental specification: 'W' = 32-lead PLCC package, 'H' = RoHS-compliant (lead-free), and 'E' = tape-and-reel packaging format. This is consistent with Microchip's standard part numbering convention for SST legacy devices, as verified in Microchip's official ordering information guides.
SST39LF010-55-4C-WHE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- SST39 MPF™
- Package/Case:
- 32-TFSOP (0.488", 12.40mm Width)
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not 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:
- 3V ~ 3.6V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-TSOP
SST39LF010-55-4C-WHE FAQ
1.How can I place an order for SST39LF010-55-4C-WHE through Aetrix?
Please submit a Request for Quotation (RFQ) for SST39LF010-55-4C-WHE 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 SST39LF010-55-4C-WHE reliable?
The price and inventory of SST39LF010-55-4C-WHE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SST39LF010-55-4C-WHE is usually 5 days.
3.What payment methods are accepted for SST39LF010-55-4C-WHE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST39LF010-55-4C-WHE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST39LF010-55-4C-WHE?
SST39LF010-55-4C-WHE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST39LF010-55-4C-WHE 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 SST39LF010-55-4C-WHE?
For technical support, including SST39LF010-55-4C-WHE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST39LF010-55-4C-WHE requirements.
6.How does Aetrix verify that SST39LF010-55-4C-WHE is sourced from the original manufacturer or authorized distributors?
All SST39LF010-55-4C-WHE 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 SST39LF010-55-4C-WHE meets industry standards.
7.What is the process for return or replacement of SST39LF010-55-4C-WHE?
All SST39LF010-55-4C-WHE units undergo pre-shipment inspection (PSI). If there is an issue with SST39LF010-55-4C-WHE, 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 SST39LF010-55-4C-WHE part is unused and in its original packaging.
Return procedure for SST39LF010-55-4C-WHE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SST39LF010-55-4C-WHE Tags
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M24C02-WMN6TP
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AT24C02C-XHM-T
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AT21CS01-STUM10-T
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M24C02-FMC6TG
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AT24CS02-SSHM-T
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AT24C04C-SSHM-T
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24LC01BT-I/SN
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24AA02UIDT-I/OT
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