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Microchip Technology SST39LF800A-55-4C-B3KE
- Part No.:
- SST39LF800A-55-4C-B3KE
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-TFBGA
- Datasheet:
-
SST39LF800A-55-4C-B3KE.pdf
- Description:
- IC FLASH 8MBIT PARALLEL 48TFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:310
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Product details
Overview
SST39LF800A-55-4C-B3KE from Microchip Technology is an 8 Mbit (512K × 16) CMOS Multi-Purpose Flash memory IC using SuperFlash technology, operating at 3.0–3.6 V, with 55 ns read access time, 100,000 program/erase cycles endurance, and >100 years data retention. It serves as nonvolatile code/data storage in embedded microcontroller systems requiring field-upgradable firmware.
For engineers reviewing the SST39LF800A-55-4C-B3KE datasheet, SST39LF800A-55-4C-B3KE pinout, SST39LF800A-55-4C-B3KE application, or SST39LF800A-55-4C-B3KE equivalent, this page delivers verified electrical specs, JEDEC-compliant x16 asynchronous interface details, sector/block erase timing, and real-world use context for industrial control, networking boot memory, and automotive ECUs.
Technical Context
This device implements a split-gate SuperFlash cell architecture with thick-oxide tunneling injector, enabling fixed erase/program times independent of cycle count-unlike conventional flash. Its command-set follows JEDEC-standard x16 pinouts and supports Software Data Protection (SDP) via six-byte sequences for sector/block/chip erase and three-byte sequences for word-program.
It features dual status detection (DQ7 Data# Polling and DQ6 Toggle Bit), latched address/data bus, and hardware write-inhibit modes (VDD power-up/down detection, noise/glitch immunity <5 ns). The device supports CFI Query mode for runtime identification and is compatible with standard microprocessor bus interfaces without external VPP.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 8 Mbit (512K × 16), providing 1 MB of nonvolatile storage for firmware images or configuration tables |
| Read Access Time | 55 ns - enables direct execution (XIP) from flash in systems with ≤18 MHz bus clocks |
| Supply Voltage | 3.0–3.6 V - compatible with 3.3 V logic rails and eliminates need for level shifters |
| Endurance | 100,000 program/erase cycles - supports frequent firmware updates over product lifetime |
| Data Retention | >100 years - ensures long-term reliability in unpowered storage applications |
| Erase Granularity | Uniform 2 KWord sectors (4 KB) and 32 KWord blocks (64 KB) - enables fine-grained update without full chip erase |
| Program Time | 14 µs per word - reduces firmware patch latency and improves system responsiveness |
Pinout & Package
Package: 48-lead TSOP (12 mm × 20 mm), RoHS-compliant, lead-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A18 | Address Inputs | A0–A17 used; A18 = AMS for SST39LF800A, selects block during Block-Erase (AMS–A15) |
| DQ0–DQ15 | Data I/O | x16 bidirectional bus; outputs tri-stated when CE# or OE# high; latched on write |
| CE# | Chip Enable | Active-low chip select; device enters standby (3 µA) when high |
| OE# | Output Enable | Active-low output gate; controls data bus visibility during read |
| WE# | Write Enable | Active-low control for program/erase; initiates internal timing on rising edge |
| VDD | Power Supply | 3.0–3.6 V supply; powers core and I/O; internal VPP generation eliminates external pump |
| VSS | Ground | Two dedicated ground pins (pins 23 and 48) reduce noise coupling in high-speed reads |
| NC | No Connect | Pins 9,10,12–15,19,20,21,22,24,25,26,27,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47 - electrically isolated, must be left floating |
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 lifecycle |
| JEDEC x16 Pinout Compliance | Direct drop-in replacement for industry-standard parallel flash devices without PCB redesign |
| Software Data Protection | Three-byte (program) and six-byte (erase) command sequences prevent accidental writes during power transitions |
| Dual Status Detection | DQ7 polling and DQ6 toggle bit allow host CPU to poll completion without timers or interrupts |
| Fixed Erase/Program Timing | Sector/block erase always 18 ms, chip erase 70 ms - simplifies firmware timing logic and avoids de-rating |
Applications
| Industrial PLC Firmware Storage | Networking Equipment Boot Memory |
|---|---|
Use Scenario: Storing programmable logic controller firmware that requires field updates via USB or Ethernet. IC Role / Device Role / Timing Role: Nonvolatile code storage with XIP-capable 55 ns read access, supporting real-time deterministic execution. Use Value: 100,000-cycle endurance allows daily firmware validation in development; >100-year retention ensures 15+ year deployment without refresh. | Use Scenario: Holding bootloader and FPGA configuration bitstreams in managed switches and routers. IC Role / Device Role / Timing Role: Primary boot memory mapped to processor address space; accessed during cold start and warm reset. Use Value: Sector-erase capability enables safe partial updates of bootloader without corrupting active configuration partitions. |
| Automotive ECU Calibration Data | Medical Device Parameter Tables |
Use Scenario: Storing engine calibration maps and diagnostic trouble codes in Tier-1 automotive control units. IC Role / Device Role / Timing Role: High-reliability data archive with guaranteed operation from –40°C to +85°C (via VF variant family; LF variant rated 0°C–70°C). Use Value: Hardware write-inhibit (VDD monitoring, glitch protection) prevents corruption during vehicle battery transients. | Use Scenario: Retaining FDA-cleared therapy parameters and usage logs in portable infusion pumps and monitors. IC Role / Device Role / Timing Role: Secure, long-life configuration storage with software-controlled erase lock to prevent unauthorized modification. Use Value: CFI Query support enables runtime verification of device identity and geometry before critical parameter writes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SST39VF800A-70-4C-B3KE | Wider VDD range (2.7–3.6 V); 70 ns read access; identical density, pinout, and command set | Better suited for battery-powered or low-voltage industrial systems where 3.0 V minimum cannot be guaranteed | Select when system VDD may dip below 3.0 V; otherwise SST39LF800A-55-4C-B3KE offers faster read performance |
| MX29LV800CTTC-70G | Same 8 Mbit x16 density, 70 ns access, 3.0–3.6 V; uses different command protocol (no CFI support; no Toggle Bit) | Lacks DQ6 toggle detection and CFI query - requires tighter timing margins and static device identification | Choose only if legacy design already uses MX29LV series; SST39LF800A-55-4C-B3KE provides superior status feedback and field upgrade flexibility |
Compared with SST39VF800A-70-4C-B3KE, the SST39LF800A-55-4C-B3KE trades 15 ns slower read speed for tighter voltage regulation and higher noise immunity; versus MX29LV800CTTC-70G, it adds robust software-controlled status reporting and JEDEC-aligned command compatibility.
Availability
SST39LF800A-55-4C-B3KE is available at Aetrix Electronics and suitable for industrial control, networking infrastructure, and automotive electronics requiring stable component supply, long-lifecycle support, and guaranteed RoHS compliance.
Supply support for SST39LF800A-55-4C-B3KE 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 is a global semiconductor company delivering microcontrollers, analog, FPGA, and memory solutions with emphasis on reliability, longevity, and embedded system integration.
The SST39LF/VF series is part of Microchip's legacy SuperFlash parallel flash portfolio, designed specifically for cost-sensitive, high-reliability embedded applications needing field-upgradable nonvolatile storage without external high-voltage circuitry.
FAQ
What is the maximum operating temperature range for SST39LF800A-55-4C-B3KE?
The SST39LF800A-55-4C-B3KE is specified for commercial operation from 0°C to +70°C. It is not rated for industrial (–40°C to +85°C) temperatures; for extended temperature support, the SST39VF800A-70-4C-B3KE variant is recommended. Thermal derating is not supported beyond the datasheet limits, and operation outside this range may compromise data retention or endurance.
Does SST39LF800A-55-4C-B3KE require an external VPP voltage for programming?
No, SST39LF800A-55-4C-B3KE does not require external VPP. It integrates internal charge pump circuitry to generate the high voltage needed for program and erase operations from the standard 3.0–3.6 V VDD supply. This eliminates external components, reduces board space, and simplifies power design compared to older flash architectures.
How many erase sectors does SST39LF800A-55-4C-B3KE contain, and what is their size?
The SST39LF800A-55-4C-B3KE contains 256 uniform erase sectors, each 4 KB (2 KWords × 16 bits) in size. This granularity allows selective firmware updates-for example, modifying only the communication stack while preserving bootloader and calibration data-without requiring full chip erase.
Can SST39LF800A-55-4C-B3KE be used as a direct replacement for SST39LF400A in an existing design?
No, SST39LF800A-55-4C-B3KE is not a direct replacement for SST39LF400A due to address bus extension: SST39LF800A uses A18 (AMS) for block addressing, while SST39LF400A uses A17. Using SST39LF800A-55-4C-B3KE in a 4 Mbit layout may cause incorrect sector/block selection unless A18 is properly decoded or tied to VDD/GND per application requirements.
What command sequence is required to initiate a sector erase on SST39LF800A-55-4C-B3KE?
To initiate sector erase on SST39LF800A-55-4C-B3KE, execute the six-byte JEDEC command sequence: write 0xAA to 0x5555, 0x55 to 0x2AAAA, 0x80 to 0x5555, 0xAA to 0x5555, 0x55 to 0x2AAAA, then 0x30 to the target sector address (using AMS–A11 lines). The internal erase begins on the rising edge of the sixth WE# pulse.
SST39LF800A-55-4C-B3KE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- SST39 MPF™
- Package/Case:
- 48-TFBGA
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH
- Memory Size:
- 8Mbit
- Memory Organization:
- 512K x 16
- 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:
- 48-TFBGA
SST39LF800A-55-4C-B3KE FAQ
1.How can I place an order for SST39LF800A-55-4C-B3KE through Aetrix?
Please submit a Request for Quotation (RFQ) for SST39LF800A-55-4C-B3KE 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 SST39LF800A-55-4C-B3KE reliable?
The price and inventory of SST39LF800A-55-4C-B3KE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SST39LF800A-55-4C-B3KE is usually 5 days.
3.What payment methods are accepted for SST39LF800A-55-4C-B3KE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST39LF800A-55-4C-B3KE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST39LF800A-55-4C-B3KE?
SST39LF800A-55-4C-B3KE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST39LF800A-55-4C-B3KE 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 SST39LF800A-55-4C-B3KE?
For technical support, including SST39LF800A-55-4C-B3KE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST39LF800A-55-4C-B3KE requirements.
6.How does Aetrix verify that SST39LF800A-55-4C-B3KE is sourced from the original manufacturer or authorized distributors?
All SST39LF800A-55-4C-B3KE 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 SST39LF800A-55-4C-B3KE meets industry standards.
7.What is the process for return or replacement of SST39LF800A-55-4C-B3KE?
All SST39LF800A-55-4C-B3KE units undergo pre-shipment inspection (PSI). If there is an issue with SST39LF800A-55-4C-B3KE, 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 SST39LF800A-55-4C-B3KE part is unused and in its original packaging.
Return procedure for SST39LF800A-55-4C-B3KE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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