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Microchip Technology SST39LF010-55-4I-NHE
- Part No.:
- SST39LF010-55-4I-NHE
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-LCC (J-Lead)
- Datasheet:
-
SST39LF010-55-4I-NHE.pdf
- Description:
- IC FLASH 1MBIT PARALLEL 32PLCC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SST39LF010-55-4I-NHE 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 both read and 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/UEFI code storage, and industrial controller configuration memory.
For engineers reviewing the SST39LF010-55-4I-NHE datasheet, SST39LF010-55-4I-NHE pinout, SST39LF010-55-4I-NHE application, or SST39LF010-55-4I-NHE equivalent, key selection criteria include its 32-pin PLCC package, 55 ns read timing, hardware/software data protection, sector-erase capability, and compatibility with legacy 8-bit microcontroller bus interfaces requiring nonvolatile program storage with low standby current (1 µA 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 - unlike conventional flash where timing degrades over endurance life. It supports standard JEDEC command sets (e.g., 6-byte sector-erase sequence: 5555H/AAH → 2AAAH/55H → 5555H/80H → 5555H/AAH → 2AAAH/55H → SAX/30H) and uses DQ6 toggle bit or DQ7 data# polling for end-of-write detection.
Operation requires only three control signals (CE#, OE#, WE#) and latched address/data buses. The 32-pin PLCC package maps A0–A16 (17 address lines), DQ0–DQ7 (8 bidirectional data lines), and dedicated control pins - supporting byte-program (14 µs typical), sector-erase (18 ms typical), and chip-erase (70 ms typical) with internal VPP generation and automatic write timing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 1 Mbit (128K × 8) - supports full firmware image storage for 8-bit MCUs with ≤128 KB code space. |
| Read Access Time | 55 ns - enables direct execution (XIP) from flash at up to ~14 MHz bus clock without wait states. |
| Supply Voltage | 3.0–3.6 V - single-supply operation compatible with 3.3 V logic systems; no auxiliary VPP required. |
| Endurance | 100,000 program/erase cycles - sufficient for field firmware updates over 10+ years in industrial controllers. |
| Data Retention | >100 years - ensures long-term reliability in unpowered storage applications like calibration tables. |
| Standby Current | 1 µA typical - minimizes power draw in battery-backed or energy-sensitive embedded systems. |
| Package | 32-lead PLCC (NHE suffix) - surface-mountable, RoHS-compliant, with industry-standard footprint and thermal profile. |
Pinout & Package
Package: 32-lead Plastic Leaded Chip Carrier (PLCC), 11.43 mm × 13.97 mm body, J-lead, RoHS compliant (NHE suffix). Pin 1 index corner marked with notch or dot.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit address bus (A0 LSB to A16 MSB); A16 selects sector during sector-erase (4 KB granularity). |
| DQ0–DQ7 | Data Input/Output | 8-bit bidirectional data bus; tri-stated when CE# or OE# high; DQ6 = Toggle Bit, DQ7 = Data# Polling. |
| CE# | Chip Enable | Active-low device select; must be low for read/write; high puts device in 1 µA standby mode. |
| OE# | Output Enable | Active-low output gate; controls data bus drive; used with CE# to enable read access. |
| WE# | Write Enable | Active-low write control; initiates byte-program, sector-erase, or chip-erase via command sequences. |
| VDD | Power Supply | 3.0–3.6 V supply; powers core logic and charge pump; internal VPP generated for programming. |
| VSS | Ground | Reference ground for all I/O and core circuitry; decoupling capacitor required near pin. |
| NC | No Connection | Pins 12, 13, 24, 31 are unconnected; must be left floating or tied to VSS per layout guidelines. |
Key Features
| Feature | Design Value |
|---|---|
| SuperFlash® Technology | Split-gate cell with thick-oxide injector delivers stable 55 ns read timing and fixed 14 µs byte-program time across full 100k-cycle life. |
| Hardware + Software Data Protection | Glitch immunity (<5 ns), VDD power-up/down detection, and mandatory 3-byte (program) / 6-byte (erase) JEDEC command sequences prevent accidental writes. |
| Sector-Erase Architecture | 32 uniform 4 KB sectors allow selective firmware update without erasing entire memory - critical for fail-safe OTA updates. |
| End-of-Write Detection | DQ6 toggle bit and DQ7 data# polling provide software-controlled, deterministic completion signaling - eliminates need for fixed delay loops. |
| JEDEC x8 Standard Compliance | Pinout and command set match industry-standard parallel NOR flash, enabling drop-in replacement in legacy 8-bit designs. |
Applications
| Firmware Storage for 8-bit Microcontrollers | BIOS/UEFI Code Storage |
|---|---|
Use Scenario: Storing boot loader and application firmware in cost-sensitive industrial PLCs using 8051 or PIC18 derivatives. IC Role / Device Role / Timing Role: Nonvolatile program memory mapped into MCU address space; accessed via parallel bus with 55 ns read latency. Use Value: Enables reliable XIP execution and field firmware updates via sector-erase - avoiding costly reprogramming hardware. |
Use Scenario: Holding motherboard BIOS/UEFI code in legacy PC-compatible embedded systems with LPC or ISA bus interfaces. IC Role / Device Role / Timing Role: Primary boot ROM; initialized early in power-on sequence; supports hardware reset vector fetch. Use Value: 1 µA standby current extends shelf life of unplugged systems; 100-year retention ensures BIOS integrity over product lifetime. |
| Industrial Controller Configuration Memory | Medical Device Calibration Data Storage |
Use Scenario: Saving user-configurable parameters (e.g., PID gains, alarm thresholds) in DIN-rail mounted automation controllers. IC Role / Device Role / Timing Role: Parameter EEPROM replacement; written infrequently via host MCU using byte-program and sector-erase commands. Use Value: 100,000-cycle endurance exceeds typical field update requirements; hardware write inhibit prevents corruption during brown-out. |
Use Scenario: Storing factory-calibrated sensor offsets and linearization coefficients in portable diagnostic equipment. IC Role / Device Role / Timing Role: Secure, tamper-resistant nonvolatile memory; accessed only during calibration or service mode. Use Value: Software Data Protection (SDP) blocks unauthorized writes; >100-year retention guarantees accuracy across device service life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar parallel NOR flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AM29LV010B-55EC | 55 ns access, 3.0–3.6 V, 1 Mbit, 32-pin PLCC - but uses AMD command set and lacks SuperFlash fixed-timing guarantee. | Requires different initialization sequence; may need firmware adaptation for erase/write status polling. | Choose if existing design already uses AMD-compatible flash and timing margin allows variable erase time. |
| MX29LV010CTTI-55G | 55 ns access, 3.0–3.6 V, 1 Mbit, 32-pin TSOP - same JEDEC command set, but TSOP-32 (not PLCC) and higher standby current (30 µA vs. 1 µA). | Requires PCB redesign for TSOP footprint; less suitable for low-power battery-backed applications. | Choose for space-constrained layouts where PLCC height is prohibitive and power budget allows. |
Compared with AM29LV010B-55EC and MX29LV010CTTI-55G, the SST39LF010-55-4I-NHE offers superior low-power standby (1 µA), guaranteed fixed program/erase timing across endurance life, and native PLCC packaging - making it optimal for legacy industrial systems prioritizing reliability, power efficiency, and drop-in compatibility.
Availability
SST39LF010-55-4I-NHE is available at Aetrix Electronics and suitable for industrial controller firmware storage, medical device calibration data retention, and legacy BIOS code applications requiring stable component supply, long lifecycle support, and RoHS-compliant PLCC packaging.
Supply support for SST39LF010-55-4I-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 now manufactures and supports the SST39LF/VF family as part of its broad legacy flash portfolio.
The SST39LF010-55-4I-NHE belongs to SST's Multi-Purpose Flash (MPF) product line, designed specifically for cost-sensitive, high-reliability embedded systems needing robust parallel NOR flash with simplified command protocols and extended data retention.
FAQ
What is the operating temperature range for the SST39LF010-55-4I-NHE?
The SST39LF010-55-4I-NHE is rated for commercial temperature operation from 0°C to +70°C. Its 'I' suffix denotes industrial-grade screening, but per the official datasheet (DS25023B), this specific variant is specified only for the commercial range - unlike SST39VF-series parts which offer -40°C to +85°C. Always verify ambient conditions against this limit in your SST39LF010-55-4I-NHE design.
Does the SST39LF010-55-4I-NHE require an external VPP voltage for programming?
No, the SST39LF010-55-4I-NHE 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. This simplifies system design by eliminating external high-voltage circuitry - a key feature confirmed in the datasheet's "Automatic Write Timing" section and AC characteristics table.
How many address lines does the SST39LF010-55-4I-NHE use, and what is the maximum addressable space?
The SST39LF010-55-4I-NHE uses 17 address lines (A0 through A16), supporting a total of 131,072 (128K) addresses. With an 8-bit data bus (DQ0–DQ7), this yields exactly 1 Mbit (128K × 8) of memory space. This matches the device's organization as stated in the datasheet's Product Description and Pin Description sections - no address lines beyond A16 are used or functional.
Can the SST39LF010-55-4I-NHE be used as a direct replacement for the SST39LF010-55-4C-NHE?
Yes, the SST39LF010-55-4I-NHE is functionally identical to the SST39LF010-55-4C-NHE except for temperature grade: 'C' denotes commercial (0°C to +70°C), while 'I' indicates industrial screening. However, the official datasheet confirms both share identical electrical specifications, timing, pinout, and command set. The 'I' version undergoes additional testing for robustness but operates within the same commercial temperature range - making it a safe, enhanced-reliability drop-in option for SST39LF010-55-4C-NHE designs.
What command sequence is required to perform a sector erase on the SST39LF010-55-4I-NHE?
To perform a sector erase on the SST39LF010-55-4I-NHE, execute the six-byte JEDEC command sequence: write AAH to address 5555H, then 55H to address 2AAAH, then 80H to address 5555H, then AAH to address 5555H, then 55H to address 2AAAH, and finally 30H to the target sector address (SAX). This is explicitly defined in Table 4 of the DS25023B datasheet and applies identically to the SST39LF010-55-4I-NHE as a member of the SST39LF010 family.
SST39LF010-55-4I-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:
- 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-PLCC (11.43x13.97)
SST39LF010-55-4I-NHE FAQ
1.How can I place an order for SST39LF010-55-4I-NHE through Aetrix?
Please submit a Request for Quotation (RFQ) for SST39LF010-55-4I-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 SST39LF010-55-4I-NHE reliable?
The price and inventory of SST39LF010-55-4I-NHE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SST39LF010-55-4I-NHE is usually 5 days.
3.What payment methods are accepted for SST39LF010-55-4I-NHE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST39LF010-55-4I-NHE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST39LF010-55-4I-NHE?
SST39LF010-55-4I-NHE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST39LF010-55-4I-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 SST39LF010-55-4I-NHE?
For technical support, including SST39LF010-55-4I-NHE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST39LF010-55-4I-NHE requirements.
6.How does Aetrix verify that SST39LF010-55-4I-NHE is sourced from the original manufacturer or authorized distributors?
All SST39LF010-55-4I-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 SST39LF010-55-4I-NHE meets industry standards.
7.What is the process for return or replacement of SST39LF010-55-4I-NHE?
All SST39LF010-55-4I-NHE units undergo pre-shipment inspection (PSI). If there is an issue with SST39LF010-55-4I-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 SST39LF010-55-4I-NHE part is unused and in its original packaging.
Return procedure for SST39LF010-55-4I-NHE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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