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Microchip Technology SST39VF1681-70-4I-B3KE
- Part No.:
- SST39VF1681-70-4I-B3KE
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-TFBGA
- Datasheet:
-
SST39VF1681-70-4I-B3KE.pdf
- Description:
- IC FLASH 16MBIT PARALLEL 48TFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:2,621
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Product details
Overview
SST39VF1681-70-4I-B3KE from Microchip Technology is a 16 Mbit (2M × 8) CMOS Multi-Purpose Flash Plus memory IC with bottom-block hardware write protection, 70 ns read access time, and single 2.7–3.6V supply operation. It implements SuperFlash® technology for high reliability in embedded firmware storage applications requiring field-upgradable code or configuration data.
For engineers reviewing the SST39VF1681-70-4I-B3KE datasheet, SST39VF1681-70-4I-B3KE pinout, SST39VF1681-70-4I-B3KE application, or SST39VF1681-70-4I-B3KE equivalent, key selection criteria include bottom-boot block protection (000000H–00FFFFH), JEDEC-compliant x8 asynchronous interface, 4 KByte uniform sector erase, and TFBGA-48 (6 mm × 8 mm) packaging compatible with space-constrained industrial controllers.
Technical Context
The SST39VF1681-70-4I-B3KE uses split-gate SuperFlash® cells with thick-oxide tunneling injectors to achieve 100,000 program/erase cycles and >100 years data retention. Its command-set architecture supports byte-program, sector/block/chip-erase, and erase-suspend/resume via standard microprocessor bus timing.
Hardware protection is implemented through dedicated WP# and RST# pins: WP# grounded enables bottom 64 KByte boot block lockout, while RST# provides hardware reset to read mode. Status detection relies on DQ7 (Data# Polling) and DQ6/DQ2 (Toggle Bits), with no external VPP required due to internal charge pump generation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 16 Mbit (2,097,152 × 8 bits); supports full firmware image storage for mid-tier microcontrollers. |
| Read Access Time | 70 ns; enables direct execution (XIP) from flash in systems with ≤14 MHz bus clocks. |
| Supply Voltage | 2.7–3.6 V; compatible with 3.3 V logic rails without level-shifting in industrial and automotive control units. |
| Endurance | 100,000 cycles (typical); sufficient for >10 years of daily firmware updates in remote telemetry devices. |
| Data Retention | >100 years; ensures long-term integrity of calibration tables and security keys in unpowered storage. |
| Block Protection | Bottom 64 KByte (000000H–00FFFFH); safeguards bootloader code against accidental overwrite during field upgrades. |
| Erase Granularity | Uniform 4 KByte sectors and 64 KByte blocks; allows selective reprogramming of application modules without full chip erase. |
Pinout & Package
Package: 48-ball TFBGA (6 mm × 8 mm, ball pitch 0.8 mm), RoHS-compliant, suitable for automated SMT assembly in high-density PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A20 | Address Inputs | 21-bit address bus; A20 is AMS (most significant address) for sector/block selection during erase commands. |
| DQ0–DQ7 | Data I/O | 8-bit bidirectional data bus; latched internally during writes; tri-stated when CE# or OE# is high. |
| CE# | Chip Enable | Active-low chip select; device enters standby (3 µA) when high; required low for all operations. |
| OE# | Output Enable | Active-low output gate; controls data bus drive; high impedance when asserted high during reads. |
| WE# | Write Enable | Active-low write strobe; latches address/data on falling/rising edges per JEDEC timing; initiates internal program/erase. |
| WP# | Write Protect | Active-low hardware lock; grounded to protect bottom 64 KByte boot block (SST39VF1681-specific). |
| RST# | Reset | Active-low hardware reset; forces immediate return to read mode, terminating in-progress erase/program. |
| VDD / VSS | Power / Ground | Single 2.7–3.6 V supply; decoupling required within 10 mm of VDD pin for stable erase timing. |
| NC | No Connect | Unbonded balls (e.g., A1, A4, A8, A11, A15, A19); must be left floating or tied to ground per layout guidelines. |
Key Features
| Feature | Design Value |
|---|---|
| SuperFlash® Technology | Split-gate cell with thick-oxide injector enables fixed 7 µs byte-program and 18 ms sector-erase times across full lifecycle. |
| Auto Low Power Mode | Reduces active read current from 9 mA to 3 µA after valid access; eliminates need for software sleep management. |
| Hardware Block Protection | Bottom 64 KByte boot block locked when WP# = GND; prevents corruption of bootloader during field firmware updates. |
| Erase-Suspend/Resume | Allows real-time read access to non-suspended sectors during erase; critical for interrupt-driven systems with latency constraints. |
| Security ID Space | 256-bit user-programmable ID (128-bit factory + 128-bit user); supports device authentication and secure provisioning. |
| CFI Compliance | JEDEC-standard Common Flash Interface enables automatic driver detection and vendor-agnostic firmware tools integration. |
Applications
| Industrial PLC Firmware Storage | Automotive ECU Bootloader |
|---|---|
|
Use Scenario: Storing and updating ladder logic programs and I/O configuration tables in programmable logic controllers operating at -40°C to +85°C. IC Role / Device Role / Timing Role: Nonvolatile code storage with hardware-protected boot sector ensuring safe recovery after power loss during update. Use Value: Bottom-block protection prevents accidental erasure of startup routines, while 70 ns access enables deterministic scan-cycle timing in real-time control loops. |
Use Scenario: Hosting bootloader and diagnostic firmware in engine control units subject to automotive qualification (AEC-Q100 Grade 3). IC Role / Device Role / Timing Role: Primary flash memory for secure boot sequence with RST#-initiated recovery from corrupted update attempts. Use Value: 100,000-cycle endurance supports lifetime OTA updates; CFI compliance simplifies integration with AUTOSAR Flash Driver stacks. |
| Medical Device Configuration Memory | Networking Equipment Image Storage |
|
Use Scenario: Retaining calibration coefficients, user preferences, and regulatory audit logs in Class II medical instruments with 10+ year service life. IC Role / Device Role / Timing Role: Long-term data archive with >100-year retention guarantee and sector-erase granularity for log rotation. Use Value: Guaranteed data integrity eliminates need for periodic refresh; 4 KByte sectors allow efficient overwriting of timestamped event records. |
Use Scenario: Storing dual firmware images (active/backup) and configuration profiles in enterprise switches and routers. IC Role / Device Role / Timing Role: Dual-image storage with hardware write protection isolating primary boot code from secondary update partitions. Use Value: Bottom-block protection secures primary image; erase-suspend enables concurrent diagnostics during background firmware download. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SST39VF1682-70-4I-B3KE | Top 64 KByte block protection (1F0000H–1FFFFFH) instead of bottom; identical timing, voltage, and package. | Used where bootloader resides in top memory region; requires PCB address routing change for boot vector alignment. | Select only if system architecture mandates top-boot configuration; pinout and command set are identical. |
| MX29LV160DBTI-70G | 16 Mbit x16/x8 configurable interface; 70 ns access; 3.0–3.6 V supply; lacks erase-suspend and auto low-power mode. | Requires x16 bus width for full bandwidth; no hardware suspend capability limits real-time system responsiveness. | Choose for cost-sensitive designs needing basic flash functionality without advanced features; verify x16 compatibility with host controller. |
Compared with SST39VF1682-70-4I-B3KE, the SST39VF1681-70-4I-B3KE provides bottom-boot protection essential for legacy bootloader layouts, while MX29LV160DBTI-70G offers lower unit cost but sacrifices erase-suspend and energy-efficient auto-low-power operation critical for battery-backed systems.
Availability
SST39VF1681-70-4I-B3KE is available at Aetrix Electronics and suitable for industrial PLCs, automotive ECUs, medical instrumentation, networking equipment, and embedded controllers requiring stable component supply across extended product lifecycles.
Supply support for SST39VF1681-70-4I-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
Microchip Technology acquired Silicon Storage Technology (SST) in 2010 and integrates SuperFlash® IP into its broad portfolio of microcontrollers, analog, and memory products.
The SST39VF1681-70-4I-B3KE belongs to the Multi-Purpose Flash Plus (MPF+) family, designed specifically for embedded systems requiring reliable, low-voltage, field-upgradable nonvolatile storage with hardware-based data protection.
FAQ
What is the boot block protection scheme of the SST39VF1681-70-4I-B3KE?
The SST39VF1681-70-4I-B3KE implements bottom-block hardware protection: grounding the WP# pin locks the lowest 64 KByte (address range 000000H–00FFFFH) against program and erase operations. This ensures bootloader integrity during firmware updates. The SST39VF1681-70-4I-B3KE datasheet confirms this behavior is specific to the "1" variant, distinguishing it from the top-block protected SST39VF1682-70-4I-B3KE.
Does the SST39VF1681-70-4I-B3KE require an external VPP voltage for programming?
No, the SST39VF1681-70-4I-B3KE does not require an external VPP voltage. It generates internal high-voltage programming pulses using an on-chip charge pump, enabling full byte-program and erase functionality from a single 2.7–3.6 V supply. This eliminates external high-voltage circuitry and simplifies system design - a confirmed feature of the SST39VF1681-70-4I-B3KE per its DS25040A datasheet.
How does the Auto Low Power mode function in the SST39VF1681-70-4I-B3KE?
The SST39VF1681-70-4I-B3KE enters Auto Low Power mode automatically after a valid read cycle completes, reducing active current from 9 mA to 3 µA without software intervention. It exits instantly on any address or control signal transition, with zero access time penalty. This feature is enabled by default and requires no configuration - a verified characteristic of the SST39VF1681-70-4I-B3KE in commercial and industrial temperature grades.
Can the SST39VF1681-70-4I-B3KE be used in systems requiring AEC-Q100 qualification?
The SST39VF1681-70-4I-B3KE is rated for industrial temperature (-40°C to +85°C) and meets RoHS compliance, but it is not officially AEC-Q100 qualified. For automotive applications, designers should verify system-level qualification testing and consult Microchip's automotive-grade alternatives. The SST39VF1681-70-4I-B3KE datasheet specifies only industrial-grade operating conditions, not automotive stress testing.
What command sequence initiates sector erase on the SST39VF1681-70-4I-B3KE?
Sector erase on the SST39VF1681-70-4I-B3KE begins with a six-byte software command sequence: AAAH/AAH → 555H/55H → AAAH/80H → AAAH/AAH → 555H/55H → SA/50H, where SA is the sector address using AMS–A12 lines. This sequence is mandatory and validated in the DS25040A datasheet; issuing it with WP# low will abort the command if the target sector falls within the protected bottom 64 KByte block.
SST39VF1681-70-4I-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:
- 16Mbit
- Memory Organization:
- 2M x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 10µs
- Access Time:
- 70 ns
- Voltage - Supply:
- 2.7V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TFBGA (6x8)
SST39VF1681-70-4I-B3KE FAQ
1.How can I place an order for SST39VF1681-70-4I-B3KE through Aetrix?
Please submit a Request for Quotation (RFQ) for SST39VF1681-70-4I-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 SST39VF1681-70-4I-B3KE reliable?
The price and inventory of SST39VF1681-70-4I-B3KE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SST39VF1681-70-4I-B3KE is usually 5 days.
3.What payment methods are accepted for SST39VF1681-70-4I-B3KE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST39VF1681-70-4I-B3KE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST39VF1681-70-4I-B3KE?
SST39VF1681-70-4I-B3KE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST39VF1681-70-4I-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 SST39VF1681-70-4I-B3KE?
For technical support, including SST39VF1681-70-4I-B3KE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST39VF1681-70-4I-B3KE requirements.
6.How does Aetrix verify that SST39VF1681-70-4I-B3KE is sourced from the original manufacturer or authorized distributors?
All SST39VF1681-70-4I-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 SST39VF1681-70-4I-B3KE meets industry standards.
7.What is the process for return or replacement of SST39VF1681-70-4I-B3KE?
All SST39VF1681-70-4I-B3KE units undergo pre-shipment inspection (PSI). If there is an issue with SST39VF1681-70-4I-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 SST39VF1681-70-4I-B3KE part is unused and in its original packaging.
Return procedure for SST39VF1681-70-4I-B3KE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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