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Microchip Technology SST39WF800A-90-4I-B3KE
- Part No.:
- SST39WF800A-90-4I-B3KE
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-TFBGA
- Datasheet:
-
SST39WF800A-90-4I-B3KE.pdf
- Description:
- IC FLASH 8MBIT PARALLEL 48TFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:4,212
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Product details
Overview
SST39WF800A-90-4I-B3KE from Silicon Storage Technology is an 8 Mbit (512K × 16) single-supply Multi-Purpose Flash memory IC with SuperFlash technology, operating at 1.65–1.95 V, featuring 90 ns read access time, 100,000-cycle endurance, and >100-year data retention. It serves as nonvolatile program/data storage in embedded controllers requiring low-voltage, sector/block-erasable flash with JEDEC-compliant x16 interface.
For engineers reviewing the SST39WF800A-90-4I-B3KE datasheet, SST39WF800A-90-4I-B3KE pinout, SST39WF800A-90-4I-B3KE application, or SST39WF800A-90-4I-B3KE equivalent, this page delivers verified technical context, JEDEC-standard pin mapping, real-world use cases in industrial firmware storage, and two validated alternative flash parts with documented functional and timing differences.
Technical Context
The SST39WF800A-90-4I-B3KE implements a split-gate SuperFlash cell architecture with thick-oxide tunneling injector, enabling fixed erase/program times independent of cycle count. It supports three software-controlled operations: Word-Program (28 µs typical), Sector-Erase (36 ms typical, uniform 2 KWord sectors), and Block-Erase (36 ms typical, uniform 32 KWord blocks).
Operation relies on standard microprocessor write sequences with latched address/data on CE# or WE# edges, and uses Toggle Bit (DQ6) or Data# Polling (DQ7) for end-of-write detection. Hardware protection includes noise/glitch immunity (<5 ns pulse rejection), VDD power-up/down detection (<1.0 V inhibit), and write-inhibit via OE#/CE#/WE# logic states.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 512K × 16 (8 Mbit total capacity; supports x16 parallel data bus) |
| Supply Voltage | 1.65–1.95 V; enables direct integration into 1.8 V systems without level-shifting |
| Read Access Time | 90 ns; meets timing requirements for high-speed microcontroller boot code fetch |
| Endurance | 100,000 program/erase cycles (typical); sufficient for field firmware updates over product lifetime |
| Data Retention | Greater than 100 years at 25°C; ensures long-term reliability in unpowered storage |
| Active Current | 5 mA typical at 5 MHz; reduces system power budget during active read operations |
| Standby Current | 5 µA typical; supports ultra-low-power sleep modes in battery-backed applications |
Pinout & Package
Package: 48-ball WFBGA (5 mm × 6 mm, 0.5 mm pitch), RoHS-compliant, lead-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A18 | Address Inputs | A0–A17 select 512K words; A18 (AMS) used for sector/block address decoding in erase commands |
| DQ0–DQ15 | Data I/O | 16-bit bidirectional bus; tri-stated when CE# or OE# is high; latched during write cycles |
| CE# | Chip Enable | Active-low device selection; high state places device in standby (5 µA current) |
| OE# | Output Enable | Active-low output gating; controls data bus drive without affecting internal state |
| WE# | Write Enable | Active-low control for program/erase command latching and timing initiation |
| VDD | Power Supply | 1.65–1.95 V supply; powers core logic and SuperFlash array |
| VSS | Ground | Reference for all I/O and internal circuitry; two dedicated balls for low-noise grounding |
| NC | No Connection | Unbonded pins (e.g., ball positions A1, C1, D1, E1, F1, G1, H1, J1, K1, L1 per Figure 2); must be left floating |
Key Features
| Feature | Design Value |
|---|---|
| SuperFlash Technology | Split-gate cell with thick-oxide injector enables fixed 28 µs program and 36 ms erase times across full endurance life |
| JEDEC-Compliant Interface | Fully compatible with industry-standard x16 flash command sets (e.g., Software Data Protection, CFI Query) |
| Uniform Erase Architecture | 2 KWord sectors (256 sectors total) and 32 KWord blocks (16 blocks total) enable granular, predictable firmware update management |
| End-of-Write Detection | DQ6 Toggle Bit and DQ7 Data# Polling provide deterministic, software-driven completion signaling without polling overhead |
| Hardware + Software Protection | Glitch immunity, VDD monitoring, and mandatory 3-byte/6-byte command sequences prevent accidental writes during power transitions |
Applications
| Industrial PLC Firmware Storage | Medical Device Configuration Memory |
|---|---|
Use Scenario: Storing and updating firmware images and calibration tables in programmable logic controllers deployed in factory automation environments. IC Role / Device Role / Timing Role: Nonvolatile boot code and parameter storage; accessed via 16-bit parallel bus during cold start and field upgrade cycles. Use Value: 90 ns read access ensures fast boot initialization; 100,000-cycle endurance supports decades of scheduled firmware revisions without replacement. |
Use Scenario: Holding safety-critical configuration data (e.g., sensor offsets, alarm thresholds) in portable diagnostic equipment requiring regulatory traceability. IC Role / Device Role / Timing Role: Secure, long-retention configuration register bank; erased/rewritten only during certified service procedures. Use Value: >100-year data retention meets IEC 62304 lifetime requirements; hardware write-inhibit prevents corruption during battery swaps or brownouts. |
| Automotive Infotainment Boot ROM | Networking Equipment Feature License Storage |
Use Scenario: Hosting bootloader and secure boot keys in head-unit ECUs where rapid startup and tamper resistance are critical. IC Role / Device Role / Timing Role: Primary boot memory mapped to CPU address space; accessed at power-on reset before DRAM initialization. Use Value: 1.65–1.95 V operation aligns with automotive 1.8 V rail; sector-erase capability allows atomic key updates without disrupting running firmware. |
Use Scenario: Storing encrypted feature-enable tokens in enterprise switches/routers, updated remotely via secure firmware patches. IC Role / Device Role / Timing Role: Secure, field-updatable license vault; accessed only by trusted boot ROM during feature activation handshake. Use Value: Block-erase (36 ms) enables fast, atomic license revocation/reissuance; CFI Query support simplifies automated BOM validation during manufacturing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MX29LV800CTTI-90G | 3.0 V supply (2.7–3.6 V), 90 ns access, 100K endurance, same 48-ball TSOP package but incompatible voltage domain | Requires external level-shifting in 1.8 V systems; unsuitable for direct drop-in replacement | Select only if legacy 3.3 V design exists and board-level voltage translation is feasible |
| S29GL064N90TFI010 | 3.0 V supply, 90 ns access, 100K endurance, 48-ball TSOP, supports CFI but lacks Toggle Bit detection (relies on Ready/Busy pin) | Needs PCB redesign for RY/BY# signal routing; no DQ6/DQ7 software polling fallback | Prefer when hardware-ready signaling is already implemented and voltage compatibility is confirmed |
Compared with MX29LV800CTTI-90G and S29GL064N90TFI010, the SST39WF800A-90-4I-B3KE uniquely delivers 1.8 V native operation, fixed-timing SuperFlash erase/program, and dual software-based status detection - eliminating need for external level shifters or dedicated ready/busy pins in space-constrained embedded designs.
Availability
SST39WF800A-90-4I-B3KE is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device configuration memory, automotive infotainment boot ROM, networking equipment feature license storage, and embedded controller program memory requiring stable component supply across extended product lifecycles.
Supply support for SST39WF800A-90-4I-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
Silicon Storage Technology (SST) was a fabless semiconductor company specializing in high-reliability, low-voltage flash memory solutions, acquired by Microchip Technology in 2010. Its SuperFlash technology remains widely deployed in mission-critical embedded systems.
The SST39WF800A-90-4I-B3KE belongs to SST's 1.8 V Multi-Purpose Flash (MPF) product line, designed specifically for cost-sensitive, power-constrained embedded applications requiring robust, long-life nonvolatile storage without external voltage translation.
FAQ
What is the operating voltage range for the SST39WF800A-90-4I-B3KE?
The SST39WF800A-90-4I-B3KE operates exclusively within a 1.65 V to 1.95 V supply range, optimized for 1.8 V systems. It does not support 3.3 V or 5 V operation. This narrow voltage window enables direct integration into modern low-power SoC platforms without level-shifting circuitry, and is strictly enforced by on-chip VDD monitoring that inhibits writes below 1.0 V.
Does the SST39WF800A-90-4I-B3KE support both sector and block erase modes?
Yes, the SST39WF800A-90-4I-B3KE supports both sector-erase (uniform 2 KWord sectors, 256 total) and block-erase (uniform 32 KWord blocks, 16 total) via JEDEC-standard six-byte command sequences. Sector-erase targets fine-grained updates (e.g., configuration parameters), while block-erase accelerates larger firmware image replacements - both complete in 36 ms typical time, with end-of-erase signaled via DQ6 Toggle Bit or DQ7 Data# Polling.
How is write completion detected on the SST39WF800A-90-4I-B3KE?
The SST39WF800A-90-4I-B3KE provides two software-detectable status mechanisms: DQ6 Toggle Bit (alternating 0/1 during operation, stops toggling upon completion) and DQ7 Data# Polling (complement of target data during programming, true data after completion). Both are valid after the fourth (program) or sixth (erase) WE#/CE# pulse edge, enabling deterministic polling without hardware interrupts or dedicated pins.
What package type is used for the SST39WF800A-90-4I-B3KE?
The SST39WF800A-90-4I-B3KE uses a 48-ball WFBGA (5 mm × 6 mm, 0.5 mm pitch) package, as confirmed in the official datasheet Figure 2 and Table 2. This micro-package features two VSS balls for low-impedance grounding and multiple NC (no-connect) balls (e.g., A1, C1, D1) that must remain unconnected on the PCB layout to ensure signal integrity and thermal performance.
Is the SST39WF800A-90-4I-B3KE compatible with JEDEC-standard flash command sets?
Yes, the SST39WF800A-90-4I-B3KE fully complies with JEDEC Standard JESD21-C for x16 flash pinouts and command definitions. It supports Software Data Protection (3-byte/6-byte sequences), Common Flash Interface (CFI) Query mode (via 0x5555/0x2AAA/0x98), and Product Identification (0x5555/0x2AAA/0x90), enabling interoperability with standard flash programmers and BIOS/UEFI firmware stacks without vendor-specific drivers.
SST39WF800A-90-4I-B3KE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- SST39 MPF™
- Package/Case:
- 48-TFBGA
- Packaging:
- Tray
- Product Status:
- Obsolete
- 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:
- 40µs
- Access Time:
- 90 ns
- Voltage - Supply:
- 1.65V ~ 1.95V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TFBGA
SST39WF800A-90-4I-B3KE FAQ
1.How can I place an order for SST39WF800A-90-4I-B3KE through Aetrix?
Please submit a Request for Quotation (RFQ) for SST39WF800A-90-4I-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 SST39WF800A-90-4I-B3KE reliable?
The price and inventory of SST39WF800A-90-4I-B3KE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SST39WF800A-90-4I-B3KE is usually 5 days.
3.What payment methods are accepted for SST39WF800A-90-4I-B3KE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST39WF800A-90-4I-B3KE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST39WF800A-90-4I-B3KE?
SST39WF800A-90-4I-B3KE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST39WF800A-90-4I-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 SST39WF800A-90-4I-B3KE?
For technical support, including SST39WF800A-90-4I-B3KE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST39WF800A-90-4I-B3KE requirements.
6.How does Aetrix verify that SST39WF800A-90-4I-B3KE is sourced from the original manufacturer or authorized distributors?
All SST39WF800A-90-4I-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 SST39WF800A-90-4I-B3KE meets industry standards.
7.What is the process for return or replacement of SST39WF800A-90-4I-B3KE?
All SST39WF800A-90-4I-B3KE units undergo pre-shipment inspection (PSI). If there is an issue with SST39WF800A-90-4I-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 SST39WF800A-90-4I-B3KE part is unused and in its original packaging.
Return procedure for SST39WF800A-90-4I-B3KE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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