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Microchip Technology SST39VF020-70-4C-WHE-T
- Part No.:
- SST39VF020-70-4C-WHE-T
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-TFSOP (0.488", 12.40mm Width)
- Datasheet:
-
SST39VF020-70-4C-WHE-T.pdf
- Description:
- IC FLASH 2MBIT PARALLEL 32TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,077
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Product details
Overview
SST39VF020-70-4C-WHE-T from Microchip Technology (formerly Silicon Storage Technology) is a 2 Mbit (256K × 8) CMOS Multi-Purpose Flash memory IC with single-supply 2.7–3.6 V write operation, 70 ns read access time, and uniform 4 KB sector-erase architecture. It serves as nonvolatile program/data storage in embedded microcontroller systems requiring field-upgradable firmware and configuration data.
For engineers reviewing the SST39VF020-70-4C-WHE-T datasheet, SST39VF020-70-4C-WHE-T pinout, SST39VF020-70-4C-WHE-T application, or SST39VF020-70-4C-WHE-T equivalent, key selection criteria include its industrial temperature range (–40°C to +85°C), JEDEC-standard x8 parallel interface, SuperFlash® endurance (100,000 cycles), and hardware/software data protection for reliable in-system programming.
Technical Context
This device implements SST's proprietary SuperFlash® technology with split-gate cells and thick-oxide tunneling injectors, enabling fixed erase/program times independent of cycle count. Its control logic supports standard JEDEC command sets-including three-byte software data protection for byte-program and six-byte sequences for sector/chip-erase-ensuring compatibility with legacy 8-bit microprocessor buses.
Operation relies on three active control signals: CE# (chip enable), OE# (output enable), and WE# (write enable), with latched address/data inputs and tri-state outputs. End-of-write detection uses either Data# Polling (DQ7) or Toggle Bit (DQ6), both valid after the fourth (program) or sixth (erase) WE#/CE# pulse edge.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 2 Mbit (256K × 8), directly maps to 256 KB of byte-addressable nonvolatile storage |
| Read Access Time | 70 ns - determines maximum sustained read throughput on 8-bit parallel bus (e.g., ~14 MB/s theoretical) |
| Write Voltage Range | 2.7–3.6 V - enables direct connection to 3.3 V system rails without external VPP generation |
| 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 |
| Operating Temp | –40°C to +85°C - qualified for industrial environments including automotive body control modules |
| Standby Current | 1 µA typical - minimizes power draw during system sleep modes |
Pinout & Package
Package: 32-lead TSOP (8 mm × 14 mm), RoHS-compliant, surface-mount.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A17 | Address Inputs | A0–A16 used for 256K × 8 addressing; A17 = AMS (most significant address) selects sector during erase |
| DQ0–DQ7 | Data I/O | Bidirectional 8-bit data bus; outputs tri-stated when CE# or OE# high; DQ6 = Toggle Bit, DQ7 = Data# Polling |
| CE# | Chip Enable | Active-low chip select; device enters standby (1 µA) when high |
| OE# | Output Enable | Active-low output gate; controls data bus visibility without affecting internal state |
| WE# | Write Enable | Active-low write strobe; latches address/data and initiates internal program/erase timing |
| VDD | Power Supply | 2.7–3.6 V supply; powers core logic and charge pumps for erase/program |
| VSS | Ground | Reference return path for all digital and analog circuitry |
| NC | No Connection | Pins 3, 16, 29 - unconnected; must be left floating or tied to ground per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| SuperFlash® Technology | Split-gate cell architecture delivers fixed 18 ms sector-erase and 70 ms chip-erase times across full lifecycle |
| Uniform Sector Erase | 64 independent 4 KB sectors allow granular firmware partitioning and partial updates without full chip erase |
| Hardware Write Inhibit | Glitch protection (<5 ns pulses rejected), VDD power-up/down detection (<1.5 V inhibits writes), and CE#/OE#/WE# gating prevent spurious programming |
| Software Data Protection | JEDIC-standard three-byte (program) and six-byte (erase) command sequences eliminate accidental writes during boot or reset |
| JEDEC x8 Pinout Compliance | Direct drop-in replacement for industry-standard 28-pin and 32-pin parallel flash devices in existing PCB layouts |
Applications
| Industrial PLC Firmware Storage | Medical Device Configuration Memory |
|---|---|
Use Scenario: Storing ladder logic firmware and I/O mapping tables in programmable logic controllers subject to frequent field updates. IC Role / Device Role / Timing Role: Nonvolatile code storage with 70 ns read access enabling real-time scan-cycle execution; sector-erase allows updating individual function blocks. Use Value: Eliminates need for external EEPROM or battery-backed SRAM; 100,000-cycle endurance supports >10 years of quarterly firmware revisions. | Use Scenario: Holding calibration coefficients, user preferences, and safety-critical device settings in portable diagnostic equipment. IC Role / Device Role / Timing Role: Secure configuration register bank with hardware/software write protection preventing corruption during power transients. Use Value: Guaranteed >100-year data retention ensures calibration validity across device lifetime without recalibration service intervals. |
| Automotive Body Control Module | Networking Equipment Bootloader Storage |
Use Scenario: Storing window/mirror/lock control algorithms and fault logs in automotive BCMs operating across –40°C to +85°C. IC Role / Device Role / Timing Role: Industrial-grade flash memory interfacing directly with 8-bit MCU parallel bus; withstands automotive thermal cycling. Use Value: Qualified industrial temperature range and 2.7–3.6 V operation ensure reliable startup and reprogramming in cold-cranking and load-dump conditions. | Use Scenario: Hosting primary bootloader and recovery image in managed switches/routers requiring secure remote firmware upgrades. IC Role / Device Role / Timing Role: Dual-bank capable storage (via sector partitioning) enabling A/B firmware update schemes with atomic rollback. Use Value: 4 KB uniform sectors simplify bootloader partitioning logic; Data# Polling (DQ7) enables deterministic upgrade status monitoring without polling overhead. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar parallel NOR flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MX29LV200CTTI-70G | 3.0–3.6 V only; 70 ns read; 512 KB density (not 256 KB); different command set (AMD-style vs JEDEC) | Requires modified driver firmware; lacks SuperFlash® fixed timing; higher voltage margin reduces compatibility with low-VDD systems | Select only if AMD-compatible ecosystem exists and 3.3 V rail stability is guaranteed |
| S29AL016J70TFI020 | 2.7–3.6 V; 70 ns read; 2 Mbit density; CFI-compliant but requires extended command sequences for sector protection | CFI query mode adds initialization overhead; sector protection model differs, increasing driver complexity | Prefer when CFI-based auto-configuration is required; verify timing margins for toggle-bit polling in real-time systems |
Compared with MX29LV200CTTI-70G and S29AL016J70TFI020, the SST39VF020-70-4C-WHE-T offers JEDEC-native command compatibility, guaranteed fixed erase times across lifetime, and lower minimum VDD (2.7 V), making it optimal for power-constrained industrial designs where firmware update reliability is critical.
Availability
SST39VF020-70-4C-WHE-T is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device configuration memory, and automotive body control module applications requiring stable component supply and long-term lifecycle support.
Supply support for SST39VF020-70-4C-WHE-T 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 2016 and continues to manufacture and support the SuperFlash® family of NOR flash products.
The SST39VF series was designed specifically for cost-sensitive, space-constrained embedded systems needing robust, low-voltage parallel flash with industrial temperature operation and simplified in-system programming.
FAQ
What is the maximum clock frequency supported by SST39VF020-70-4C-WHE-T?
The SST39VF020-70-4C-WHE-T does not use a clock signal-it operates asynchronously via CE#, OE#, and WE# handshaking. Its 70 ns read access time implies compatibility with microcontrollers running up to ~14 MHz bus timing (1/70 ns ≈ 14.3 MHz), assuming proper setup/hold margins. The device itself has no internal oscillator or clock input.
Does SST39VF020-70-4C-WHE-T require an external VPP voltage for programming?
No. The SST39VF020-70-4C-WHE-T integrates on-chip charge pumps and generates all necessary high-voltage programming waveforms internally. Programming and erasing are performed using only the 2.7–3.6 V VDD supply-no external VPP pin or voltage source is needed for SST39VF020-70-4C-WHE-T operation.
How many sectors does SST39VF020-70-4C-WHE-T have, and what is their size?
The SST39VF020-70-4C-WHE-T contains 64 uniform sectors, each 4 KB (4096 bytes) in size, totaling 256 KB of addressable memory. This sector architecture enables selective erasure-only the sector containing modified data needs erasing before reprogramming, minimizing update time and wear.
Is SST39VF020-70-4C-WHE-T compatible with 5 V microcontrollers?
No. SST39VF020-70-4C-WHE-T is strictly a 2.7–3.6 V device with CMOS I/O thresholds referenced to VDD. Its VIH minimum is 0.7×VDD (~1.89 V at 2.7 V), and VIL maximum is 0.8 V-making it incompatible with 5 V TTL or CMOS logic levels. Level-shifting circuitry is required for interfacing with 5 V systems.
What package type is used for SST39VF020-70-4C-WHE-T?
The SST39VF020-70-4C-WHE-T uses a 32-lead TSOP (Thin Small Outline Package) measuring 8 mm × 14 mm, with standard pinout compliant with JEDEC MO-142. The "WHE-T" suffix explicitly denotes this TSOP package variant, distinguishing it from the PLCC version (e.g., SST39VF020-70-4C-WHE).
SST39VF020-70-4C-WHE-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- SST39 MPF™
- Package/Case:
- 32-TFSOP (0.488", 12.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH
- Memory Size:
- 2Mbit
- Memory Organization:
- 256K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 20µs
- 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:
- 32-TSOP
SST39VF020-70-4C-WHE-T FAQ
1.How can I place an order for SST39VF020-70-4C-WHE-T through Aetrix?
Please submit a Request for Quotation (RFQ) for SST39VF020-70-4C-WHE-T 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 SST39VF020-70-4C-WHE-T reliable?
The price and inventory of SST39VF020-70-4C-WHE-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SST39VF020-70-4C-WHE-T is usually 5 days.
3.What payment methods are accepted for SST39VF020-70-4C-WHE-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST39VF020-70-4C-WHE-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST39VF020-70-4C-WHE-T?
SST39VF020-70-4C-WHE-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST39VF020-70-4C-WHE-T 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 SST39VF020-70-4C-WHE-T?
For technical support, including SST39VF020-70-4C-WHE-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST39VF020-70-4C-WHE-T requirements.
6.How does Aetrix verify that SST39VF020-70-4C-WHE-T is sourced from the original manufacturer or authorized distributors?
All SST39VF020-70-4C-WHE-T 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 SST39VF020-70-4C-WHE-T meets industry standards.
7.What is the process for return or replacement of SST39VF020-70-4C-WHE-T?
All SST39VF020-70-4C-WHE-T units undergo pre-shipment inspection (PSI). If there is an issue with SST39VF020-70-4C-WHE-T, 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 SST39VF020-70-4C-WHE-T part is unused and in its original packaging.
Return procedure for SST39VF020-70-4C-WHE-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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