My Inquiry
My Account
Microchip Technology SST39LF800A-55-4C-EKE
- Part No.:
- SST39LF800A-55-4C-EKE
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
SST39LF800A-55-4C-EKE.pdf
- Description:
- IC FLASH 8MBIT PARALLEL 48TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:452
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SST39LF800A-55-4C-EKE 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, 14 µs word-program time, and uniform 2 KWord sector / 32 KWord block erase architecture. It serves as nonvolatile program/data storage in embedded controllers, BIOS firmware, and industrial HMI systems.
For engineers reviewing the SST39LF800A-55-4C-EKE datasheet, SST39LF800A-55-4C-EKE pinout, SST39LF800A-55-4C-EKE application, or SST39LF800A-55-4C-EKE equivalent, key selection criteria include x16 asynchronous interface compatibility, JEDEC-standard command set support, 3.0–3.6 V single-supply operation, 100,000-cycle endurance, and TSOP-48 package footprint for legacy board designs.
Technical Context
This device implements a split-gate SuperFlash cell with thick-oxide tunneling injector, enabling fixed erase/program timing independent of cycle count-unlike conventional flash technologies where timing degrades over endurance life. Its architecture supports hardware write inhibit via CE#/OE#/WE# control and software data protection using six-byte command sequences for sector/block/chip erase.
The SST39LF800A-55-4C-EKE uses standard x16 asynchronous bus protocol with latched address/data, Toggle Bit (DQ6) and Data# Polling (DQ7) for end-of-write detection, and CFI Query mode for runtime device identification. It conforms to JEDEC pinouts and requires no external VPP supply due to on-chip charge pump generation.
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 from flash (XIP) in microcontrollers with ≤18 MHz bus timing budgets |
| Word-Program Time | 14 µs typical - allows rapid field updates without system stall; total chip rewrite takes ~8 seconds |
| Erase Architecture | Uniform 2 KWord sectors (256 total) and 32 KWord blocks (16 total) - supports granular firmware patching |
| Endurance & Retention | 100,000 program/erase cycles, >100 years data retention - suitable for infrequently updated industrial firmware |
| Supply Voltage | 3.0–3.6 V only - not compatible with 2.7 V operation like VF-series; requires stable 3.3 V rail |
| Operating Temperature | 0°C to +70°C (Commercial grade) - validated for office and consumer-grade embedded applications |
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 (most significant address) selects top 32 KWord block in 8 Mbit config |
| DQ0–DQ15 | Data I/O | x16 bidirectional bus; outputs tri-stated when CE# or OE# high; latched during write |
| CE# | Chip Enable | Active-low chip select; device enters standby (3 µA) when high |
| OE# | Output Enable | Active-low output gate; controls DQ bus drive; must be low for valid read data |
| WE# | Write Enable | Active-low write strobe; latches command/data on rising edge; initiates internal program/erase |
| VDD | Power Supply | 3.0–3.6 V supply; powers core logic and charge pump; no external VPP required |
| VSS | Ground | Two dedicated ground pins (pins 23 & 48) for noise reduction in high-speed reads |
| NC | No Connect | Pins 9, 10, 12–16, 19, 20, 22, 24, 25, 27, 29, 31, 33, 35, 37, 39, 41, 43, 45, 47 - must remain unconnected |
Key Features
| Feature | Design Value |
|---|---|
| SuperFlash cell architecture | Split-gate design with thick-oxide injector ensures stable 55 ns read timing and 14 µs program time across full 100k-cycle life |
| JEDEC-standard command set | Compatible with industry-standard flash controllers and bootloader firmware without custom driver development |
| Hardware + software data protection | Prevents spurious writes during power-up/down via WE#/CE#/OE# inhibit and six-byte SDP command lockout |
| CFI Query mode | Enables runtime identification of density, timing, and erase geometry - critical for generic flash-aware bootloaders |
| Uniform sector/block sizing | 256 × 2 KWord sectors and 16 × 32 KWord blocks simplify partitioning of firmware, config, and log storage areas |
Applications
| Industrial PLC Firmware Storage | Embedded Network Router Boot Code |
|---|---|
Use Scenario: Storing firmware images and parameter tables in programmable logic controllers deployed in factory automation environments. IC Role / Device Role / Timing Role: Nonvolatile code storage with XIP-capable 55 ns read access; executes directly from flash under real-time scan cycle constraints. Use Value: Eliminates need for external serial EEPROM or NOR flash with slower timing; supports field firmware upgrades via sector-erase without full chip reprogramming. | Use Scenario: Holding boot loader, kernel image, and configuration data in enterprise-grade network routers requiring secure, reliable startup. IC Role / Device Role / Timing Role: Primary boot memory mapped to CPU address space; accessed during cold start and recovery sequences. Use Value: 100,000-cycle endurance accommodates frequent security patch deployments; CFI Query enables automatic firmware validation pre-boot. |
| Medical Device Configuration Memory | Automotive Infotainment System BIOS |
Use Scenario: Retaining calibration data, user preferences, and safety-critical settings in Class II medical instruments with long service life. IC Role / Device Role / Timing Role: Parameter storage with >100-year data retention; accessed during device initialization and diagnostics. Use Value: Guarantees data integrity over product lifetime without battery backup; sector-erase allows selective reset of user settings without losing calibration constants. | Use Scenario: Storing UEFI-compatible BIOS code and hardware initialization routines in automotive head units operating in extended temperature ranges. IC Role / Device Role / Timing Role: Firmware ROM replacement with 3.0–3.6 V compatibility matching automotive 3.3 V power domains. Use Value: TSOP-48 footprint ensures drop-in replacement in existing infotainment PCBs; JEDEC compliance simplifies qualification against AEC-Q100 stress tests. |
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-EKE | 2.7–3.6 V supply range; 70 ns read access; same 8 Mbit density and TSOP-48 package | Supports wider voltage range including 2.7 V systems; slower timing limits XIP in high-clock microcontrollers | Select when board operates below 3.0 V or requires broader supply tolerance; verify timing margins for CPU interface |
| MX29LV800CTTI-70G | 8 Mbit x16, 70 ns, 2.7–3.6 V; uses different command set (non-JEDEC); 48-pin TSOP | Lacks CFI Query mode; requires vendor-specific driver; lower 100k-cycle endurance rating | Use only if existing firmware already supports Macronix command protocol; avoid for new designs requiring interoperability |
Compared with SST39VF800A-70-4C-EKE and MX29LV800CTTI-70G, the SST39LF800A-55-4C-EKE delivers faster 55 ns read performance and guaranteed 3.0–3.6 V operation-ideal for legacy 3.3 V systems needing deterministic timing, while retaining JEDEC compatibility and CFI support for bootloader flexibility.
Availability
SST39LF800A-55-4C-EKE is available at Aetrix Electronics and suitable for industrial control, networking infrastructure, and medical electronics requiring stable component supply with long-term obsolescence management.
Supply support for SST39LF800A-55-4C-EKE 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 specializing in microcontrollers, analog devices, and memory solutions, acquired Silicon Storage Technology (SST) in 2010 to expand its nonvolatile memory portfolio.
The SST39LF/VF series was designed specifically for cost-sensitive, high-reliability embedded applications requiring robust firmware storage with minimal external components-leveraging SuperFlash technology to eliminate VPP pumps and simplify power design.
FAQ
What is the maximum operating frequency supported by SST39LF800A-55-4C-EKE?
The SST39LF800A-55-4C-EKE does not specify a maximum clock frequency because it is an asynchronous x16 flash device. Its 55 ns read access time defines the minimum read cycle time (TRC ≥ 55 ns), supporting CPU interfaces up to approximately 18 MHz for direct read operations. The device has no internal clock input and relies entirely on CE#, OE#, and WE# timing control per JEDEC standards.
Does SST39LF800A-55-4C-EKE support Common Flash Interface (CFI) mode?
Yes, the SST39LF800A-55-4C-EKE supports CFI Query mode. Writing the three-byte sequence 5555H/AAH → 2AAAH/55H → 5555H/98H enters CFI mode, allowing the host to read device geometry, timing, and command set information from predefined addresses. This enables generic flash-aware bootloaders to auto-configure for SST39LF800A-55-4C-EKE without hard-coded parameters.
Can SST39LF800A-55-4C-EKE be used in place of SST39LF400A-55-4C-EKE on the same PCB?
No-SST39LF800A-55-4C-EKE is not a drop-in replacement for SST39LF400A-55-4C-EKE. Although both use TSOP-48 and share pinout, the SST39LF800A requires A18 (AMS) for block addressing and has 256 sectors vs. 128 in the 4 Mbit part. Firmware must be recompiled for 8 Mbit address space, and hardware may require A18 routing verification.
What write protection mechanisms does SST39LF800A-55-4C-EKE implement?
SST39LF800A-55-4C-EKE implements dual-layer protection: hardware-level inhibition via CE#, OE#, or WE# high states during power-up/down, and software-level protection using six-byte command sequences (e.g., 5555H/AAH → 2AAAH/55H → 5555H/80H → …) to initiate erase. The device ships with Software Data Protection permanently enabled, preventing accidental writes without proper command authentication.
Is SST39LF800A-55-4C-EKE qualified for automotive applications?
No-SST39LF800A-55-4C-EKE is specified for Commercial temperature range (0°C to +70°C) only. For automotive use, Microchip offers the SST39VF800A variant rated for Industrial range (–40°C to +85°C). The "LF" suffix denotes 3.0–3.6 V operation and commercial grade; "VF" indicates 2.7–3.6 V and extended temperature capability. SST39LF800A-55-4C-EKE is not AEC-Q100 qualified.
SST39LF800A-55-4C-EKE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- SST39 MPF™
- Package/Case:
- 48-TFSOP (0.724", 18.40mm Width)
- 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-TSOP
SST39LF800A-55-4C-EKE FAQ
1.How can I place an order for SST39LF800A-55-4C-EKE through Aetrix?
Please submit a Request for Quotation (RFQ) for SST39LF800A-55-4C-EKE 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-EKE reliable?
The price and inventory of SST39LF800A-55-4C-EKE 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-EKE is usually 5 days.
3.What payment methods are accepted for SST39LF800A-55-4C-EKE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST39LF800A-55-4C-EKE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST39LF800A-55-4C-EKE?
SST39LF800A-55-4C-EKE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST39LF800A-55-4C-EKE 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-EKE?
For technical support, including SST39LF800A-55-4C-EKE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST39LF800A-55-4C-EKE requirements.
6.How does Aetrix verify that SST39LF800A-55-4C-EKE is sourced from the original manufacturer or authorized distributors?
All SST39LF800A-55-4C-EKE 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-EKE meets industry standards.
7.What is the process for return or replacement of SST39LF800A-55-4C-EKE?
All SST39LF800A-55-4C-EKE units undergo pre-shipment inspection (PSI). If there is an issue with SST39LF800A-55-4C-EKE, 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-EKE part is unused and in its original packaging.
Return procedure for SST39LF800A-55-4C-EKE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SST39LF800A-55-4C-EKE Tags
-
M24C02-WMN6TP
STMicroelectronics
-
AT24C02C-XHM-T
Microchip Technology
-
AT21CS01-STUM10-T
Microchip Technology
-
AT24C02C-SSHM-T
Microchip Technology
-
24LC01BT-I/OT
Microchip Technology
-
M24C02-FMC6TG
STMicroelectronics
-
AT24CS02-SSHM-T
Microchip Technology
-
93LC46BT-I/OT
Microchip Technology
-
AT24C04C-SSHM-T
Microchip Technology
-
24LC01BT-I/SN
Microchip Technology
-
24AA02UIDT-I/OT
Microchip Technology
-
AT24C08C-STUM-T
Microchip Technology
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
