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Microchip Technology SST39VF1681-70-4C-EKE
- Part No.:
- SST39VF1681-70-4C-EKE
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
SST39VF1681-70-4C-EKE.pdf
- Description:
- IC FLASH 16MBIT PARALLEL 48TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:110
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Product details
Overview
SST39VF1681-70-4C-EKE from Microchip Technology is a 16 Mbit (2M × 8) CMOS Multi-Purpose Flash Plus (MPF+) memory IC with bottom-boot block protection, 70 ns read access time, and single 2.7–3.6 V 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 SST39VF1681-70-4C-EKE datasheet, SST39VF1681-70-4C-EKE pinout, SST39VF1681-70-4C-EKE application, or SST39VF1681-70-4C-EKE equivalent, this page delivers verified package mapping, JEDEC-compliant x8 interface timing, bottom 64 KByte hardware write protection, and real-world erase/program performance metrics - all confirmed against DS25040A Rev A.
Technical Context
The SST39VF1681-70-4C-EKE uses SST's proprietary split-gate SuperFlash® cell architecture with thick-oxide tunneling injector, enabling fixed 7 µs byte-program and 18 ms sector/block-erase times independent of cycle count. Its command set conforms to JEDEC-standard x8 flash protocols including Data# Polling (DQ7) and Toggle Bit (DQ6/DQ2) status detection.
It supports three erase granularities - uniform 4 KByte sectors (512 total), 64 KByte blocks (32 total), and full-chip erase - with hardware WP#-controlled bottom-boot block protection (000000H–00FFFFH). The RST# pin provides hardware reset to Read mode, and CFI Query mode (via 98H command) exposes device geometry and timing parameters at standardized addresses.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 16 Mbit (2,097,152 × 8 bits); supports boot code + application storage in single x8 parallel interface |
| Read Access Time | 70 ns max; enables direct execution from flash (XIP) in 5 MHz bus systems without wait states |
| Supply Voltage | 2.7–3.6 V single supply; eliminates need for separate VPP programming voltage - internal charge pump handles erase/write |
| Endurance & Retention | 100,000 program/erase cycles typical; >100 years data retention - validated for industrial lifecycle requirements |
| Erase/Program Speed | Sector/Block-Erase: 18 ms typical; Byte-Program: 7 µs typical - fixed timing avoids software de-rating over lifetime |
| Protection Scheme | Hardware bottom-block protection (64 KByte, 000000H–00FFFFH) via WP# pin; prevents accidental overwrite of boot loader |
| Operating Temp | Commercial grade: 0°C to +70°C - qualified for consumer and industrial control board deployments |
Pinout & Package
Package: 48-lead TSOP (12 mm × 20 mm, standard pinout, die-up orientation). Pin assignments conform to JEDEC MO-142AC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A20 | Address Inputs | A0–A19 select 2M × 8 locations; A20 (AMS) used for sector/block address decoding during erase commands |
| DQ0–DQ7 | Data I/O | Bi-directional x8 data bus; latched internally during write; tri-state when CE# or OE# 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 = high-impedance; enables Auto Low Power mode after read |
| WE# | Write Enable | Active-low control for program/erase command latching; rising edge initiates internal operation |
| WP# | Write Protect | Active-low hardware lock for bottom 64 KByte boot block (000000H–00FFFFH); floating = internally pulled high |
| RST# | Reset | Active-low hardware reset - forces immediate return to Read mode; terminates in-progress erase/program |
| VDD / VSS | Power / Ground | Single 2.7–3.6 V supply; decoupling required per JEDEC layout guidelines for stable 70 ns timing |
Key Features
| Feature | Design Value |
|---|---|
| Erase-Suspend/Resume | Allows read/program from non-suspended sectors during active erase - critical for real-time firmware updates |
| Security ID Space | 256-bit user-programmable ID (128-bit factory + 128-bit user); locked after programming to prevent tampering |
| Auto Low Power Mode | Reduces active read current from 9 mA to 3 µA after valid read - cuts power by >99% during idle polling |
| JEDEC CFI Support | Standardized query table (address 10H–34H) enables automatic driver detection and configuration in BSPs |
| Toggle Bit + Data# Polling | Dual-status reporting (DQ6/DQ2 + DQ7) ensures robust end-of-write detection without external timers or delays |
Applications
| Industrial PLC Firmware Storage | Medical Device Boot Loader |
|---|---|
|
Use Scenario: Storing and updating firmware images in programmable logic controllers operating in harsh factory environments. IC Role / Device Role / Timing Role: Nonvolatile code storage with hardware-protected boot sector; 70 ns access enables deterministic startup timing. Use Value: Bottom-block protection prevents corruption of bootloader during field firmware upgrades; 100K-cycle endurance supports decades of maintenance cycles. |
Use Scenario: Holding certified boot code and safety-critical configuration data in FDA-regulated diagnostic equipment. IC Role / Device Role / Timing Role: Secure, long-retention storage for immutable boot image; RST# pin enables hardware-initiated safe recovery. Use Value: >100-year data retention meets medical device shelf-life requirements; Security ID allows traceability and anti-counterfeiting. |
| Consumer Set-Top Box OS Image | Automotive Infotainment Module |
|
Use Scenario: Hosting upgradable Linux kernel and root filesystem in cable/satellite receiver units. IC Role / Device Role / Timing Role: Parallel x8 interface provides bandwidth for fast boot; sector-erase enables modular OTA updates. Use Value: 4 KByte uniform sectors allow patch-level updates without full-image reflash; low 3 µA standby extends power-off battery life. |
Use Scenario: Storing navigation map data and UI assets in automotive head units with thermal cycling exposure. IC Role / Device Role / Timing Role: Industrial-temp-rated flash (−40°C to +85°C) with fixed erase timing ensures consistent update behavior across temperature range. Use Value: SuperFlash® technology maintains 18 ms erase time regardless of accumulated cycles - eliminates calibration drift in production test. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar parallel NOR flash applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SST39VF1682-70-4C-EKE | Top-boot block protection (1F0000H–1FFFFFH) instead of bottom-boot; identical timing, density, and command set | Used where boot code resides in top memory region; not interchangeable without PCB address wiring change | Select only if system design allocates boot vector to upper 64 KByte - pinout and interface are identical |
| MX29LV160EBTI-70G | 16 Mbit (x16) interface, 70 ns access, 3.0 V core; requires x16 data bus and different command protocol (AMD-style) | Requires PCB redesign for x16 bus and different WP#/RESET timing; no CFI support in base configuration | Consider only for legacy AMD-compatible designs; not drop-in - needs driver and layout revision |
Compared with SST39VF1682-70-4C-EKE, the SST39VF1681-70-4C-EKE provides bottom-boot protection essential for systems with reset vectors at 0x000000; versus MX29LV160EBTI-70G, it offers JEDEC-compliant x8 interface and integrated CFI - reducing BSP integration effort.
Availability
SST39VF1681-70-4C-EKE is available at Aetrix Electronics and suitable for industrial control, medical diagnostics, consumer electronics, and automotive infotainment applications requiring stable component supply and long-term obsolescence management.
Supply support for SST39VF1681-70-4C-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 acquired Silicon Storage Technology (SST) in 2010 and now manufactures and supports the SST39VF1681 family as part of its broad parallel NOR flash portfolio.
The SST39VF1681-70-4C-EKE belongs to the Multi-Purpose Flash Plus (MPF+) product line, designed specifically for cost-sensitive, high-reliability embedded systems needing field-upgradable firmware with hardware-secured boot blocks.
FAQ
What is the exact memory organization of the SST39VF1681-70-4C-EKE?
The SST39VF1681-70-4C-EKE is organized as 2,097,152 words × 8 bits (2M × 8), totaling 16 Mbit. It features 512 uniform 4 KByte sectors and 32 uniform 64 KByte blocks. The bottom 64 KByte (addresses 000000H–00FFFFH) is hardware-protected via the WP# pin - a defining trait of the SST39VF1681 variant. This structure is explicitly defined in Table 3 and Figure 1 of DS25040A.
Does the SST39VF1681-70-4C-EKE require an external VPP voltage for programming?
No. The SST39VF1681-70-4C-EKE uses internal charge pump circuitry to generate all required high voltages for erase and program operations. It operates from a single 2.7–3.6 V supply (VDD), with no VPP pin present - confirmed by "VPP min/max = 00H" in Table 8 of DS25040A and absence of VPP in pin descriptions.
How does hardware block protection work on the SST39VF1681-70-4C-EKE?
Hardware block protection on the SST39VF1681-70-4C-EKE is implemented via the WP# pin, which locks the bottom 64 KByte boot block (000000H–00FFFFH) against program and erase when driven low. If WP# is left unconnected, an internal pull-up holds it high, disabling protection. This behavior is distinct from the SST39VF1682, which protects the top block instead - detailed in Table 3 and Section 8 of DS25040A.
Can the SST39VF1681-70-4C-EKE be used in systems requiring CFI compliance?
Yes. The SST39VF1681-70-4C-EKE fully supports Common Flash Interface (CFI) per JEDEC JESD68. Executing the three-byte CFI Query command (98H at AAAH) places the device into CFI mode, exposing standardized geometry, timing, and command-set tables at addresses 10H–34H - verified in Tables 7–9 of DS25040A.
What is the purpose of the RST# pin on the SST39VF1681-70-4C-EKE?
The RST# pin on the SST39VF1681-70-4C-EKE provides hardware-initiated recovery: driving RST# low for ≥TRP (100 ns) forces immediate termination of any in-progress erase or program operation and returns the device to Read mode. After RST# goes high, a minimum TRHR (100 ns) delay is required before valid reads - specified in Section 8 and Figure 16 of DS25040A.
SST39VF1681-70-4C-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:
- 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TSOP
SST39VF1681-70-4C-EKE FAQ
1.How can I place an order for SST39VF1681-70-4C-EKE through Aetrix?
Please submit a Request for Quotation (RFQ) for SST39VF1681-70-4C-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 SST39VF1681-70-4C-EKE reliable?
The price and inventory of SST39VF1681-70-4C-EKE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SST39VF1681-70-4C-EKE is usually 5 days.
3.What payment methods are accepted for SST39VF1681-70-4C-EKE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST39VF1681-70-4C-EKE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST39VF1681-70-4C-EKE?
SST39VF1681-70-4C-EKE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST39VF1681-70-4C-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 SST39VF1681-70-4C-EKE?
For technical support, including SST39VF1681-70-4C-EKE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST39VF1681-70-4C-EKE requirements.
6.How does Aetrix verify that SST39VF1681-70-4C-EKE is sourced from the original manufacturer or authorized distributors?
All SST39VF1681-70-4C-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 SST39VF1681-70-4C-EKE meets industry standards.
7.What is the process for return or replacement of SST39VF1681-70-4C-EKE?
All SST39VF1681-70-4C-EKE units undergo pre-shipment inspection (PSI). If there is an issue with SST39VF1681-70-4C-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 SST39VF1681-70-4C-EKE part is unused and in its original packaging.
Return procedure for SST39VF1681-70-4C-EKE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SST39VF1681-70-4C-EKE Tags
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