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Microchip Technology SST39SF020A-70-4I-NHE-T
- Part No.:
- SST39SF020A-70-4I-NHE-T
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-LCC (J-Lead)
- Datasheet:
-
SST39SF020A-70-4I-NHE-T.pdf
- Description:
- IC FLASH 2MBIT PARALLEL 32PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:1,489
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Product details
Overview
SST39SF020A-70-4I-NHE-T from Microchip Technology is a 2-Mbit (256K × 8) CMOS Multi-Purpose Flash memory IC with JEDEC-standard x8 parallel interface, 70 ns read access time, single 4.5V–5.5V supply operation, and uniform 4-Kbyte sector erase architecture. It serves as nonvolatile program/data storage in embedded microcontroller systems requiring field-upgradable firmware or configuration data.
For engineers reviewing the SST39SF020A-70-4I-NHE-T datasheet, SST39SF020A-70-4I-NHE-T pinout, SST39SF020A-70-4I-NHE-T application, or SST39SF020A-70-4I-NHE-T equivalent, key selection criteria include sector-erase timing (18 ms typ), byte-program time (14 µs typ), TTL I/O compatibility, hardware/software write protection, and industrial temperature range support (–40°C to +85°C).
Technical Context
This device implements SuperFlash® technology with split-gate cells and thick-oxide tunneling injectors, enabling fixed erase/program times independent of cycle count-unlike conventional Flash where timing degrades over endurance life. It uses standard microprocessor bus cycles for command execution, with WE#- or CE#-controlled operations and latched address/data paths.
Write status detection relies on two deterministic methods: Data# Polling (DQ7 toggles complement-to-true-data transition) and Toggle Bit (DQ6 toggles during internal operation and halts upon completion). Both are valid after the fourth (program) or sixth (erase) WE#/CE# pulse edge, supporting robust host software polling without timers.
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 max - enables direct connection to 14 MHz microcontrollers without wait states |
| Byte Program Time | 14 µs typical - supports rapid in-system firmware patching at ~71 kB/s effective throughput |
| Sector Erase Time | 18 ms typical - erases one 4-Kbyte sector per command, enabling granular updates |
| Data Retention | >100 years - ensures long-term reliability in unpowered storage applications |
| Endurance | 10,000 cycles minimum (JEDEC A117) - qualified for repeated field reprogramming |
| Operating Voltage | 4.5V–5.5V - compatible with legacy 5V logic families and eliminates need for level shifters |
| Temperature Range | –40°C to +85°C (Industrial grade) - validated for automotive control modules and industrial PLCs |
Pinout & Package
32-lead TSOP (Thin Small Outline Package) with standard JEDEC x8 Flash pinout; pin 1 is NC, pin 30 is A17 (confirmed for SST39SF020A); RoHS-compliant, lead-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit address bus (A0–A16) selects one of 131,072 bytes; A16 is MSB for 256K × 8 organization |
| DQ0–DQ7 | Data Input/Output | 8-bit bidirectional data bus; tri-stated when CE# or OE# high; latched internally during writes |
| CE# | Chip Enable | Active-low chip select; device enters standby (30 µA) when high; required low for all operations |
| OE# | Output Enable | Active-low output gate; controls data bus drive during reads; high = high-impedance state |
| WE# | Write Enable | Active-low control for program/erase; initiates command latching on falling/rising edges per JEDEC sequence |
| VDD | Power Supply | +4.5V to +5.5V supply; powers core logic and charge pump; no external VPP required |
| VSS | Ground | Reference return path for all signals and power; decoupling capacitor required near VDD/VSS pins |
| NC (Pin 1) | No Connection | Unbonded pad; must be left floating or tied to ground-no electrical function |
Key Features
| Feature | Design Value |
|---|---|
| SuperFlash® Technology | Fixed 14 µs byte-program and 18 ms sector-erase times across full 10,000-cycle lifetime-no software derating needed |
| Hardware Write Protection | Glitch immunity (WE#/CE# pulses <5 ns ignored), VDD power-up/down detection (<2.5V inhibits writes), and OE#/CE#/WE# inhibit modes prevent spurious programming |
| Software Data Protection (SDP) | JEDEC-compliant 3-byte (program) or 6-byte (erase) command sequences permanently enabled at shipment-blocks accidental writes during boot or reset |
| End-of-Write Detection | Dual-status signaling via DQ7 (Data# Polling) and DQ6 (Toggle Bit)-enables interrupt-driven or polled host firmware without fixed delays |
| TTL I/O Compatibility | Direct interface to 5V microcontrollers (VIH = 2.0V min, VOH = 2.4V min @ 400 µA) without level translation circuitry |
Applications
| Industrial PLC Firmware Storage | Automotive ECU Bootloader Memory |
|---|---|
Use Scenario: Storing updatable ladder logic and I/O configuration tables in programmable logic controllers deployed in factory automation environments. IC Role / Device Role / Timing Role: Nonvolatile program memory mapped into MCU address space; accessed via parallel bus during cold start and runtime updates. Use Value: 4-Kbyte sector erase enables partial reprogramming of logic modules without full flash erase-reducing downtime during field maintenance. |
Use Scenario: Holding bootloader code and calibration data in engine control units subject to ASIL-B functional safety requirements. IC Role / Device Role / Timing Role: Standalone x8 Flash memory providing secure, tamper-resistant storage for signed firmware images and sensor compensation coefficients. Use Value: 100-year data retention and –40°C to +85°C operation ensure integrity across vehicle lifetime and extreme under-hood thermal cycling. |
| Medical Device Configuration Storage | Networking Equipment Boot Image |
Use Scenario: Retaining user-defined operational parameters (e.g., alarm thresholds, display language, audit logs) in portable diagnostic instruments. IC Role / Device Role / Timing Role: EEPROM-replacement data storage accessed via microcontroller GPIO-banged or dedicated memory bus. Use Value: Hardware/software write protection prevents corruption during battery swaps or brownout events-critical for regulatory compliance (IEC 62304). |
Use Scenario: Storing compressed Linux kernel and root filesystem in enterprise switches and routers requiring fast boot and remote firmware upgrades. IC Role / Device Role / Timing Role: Primary boot memory mapped at reset vector; read during Power-On Self-Test (POST) before DRAM initialization. Use Value: 70 ns read access enables sub-1-second boot time; sector erase allows atomic update of kernel partitions without risking bricking. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT29LV020-70PU | 2-Mbit (256K × 8), 70 ns access, but requires 12V VPP for programming; no internal charge pump | Lacks integrated VPP generation-requires external high-voltage circuitry and more complex PCB layout | Choose SST39SF020A-70-4I-NHE-T when simplifying power design and reducing BOM count is prioritized |
| MX29LV200CBTI-70G | 2-Mbit (256K × 8), 70 ns access, supports CFI query mode and wider voltage range (2.7–3.6V), but not 5V-compatible | Designed for 3.3V systems only; incompatible with 5V microcontrollers without level shifting | Choose SST39SF020A-70-4I-NHE-T for legacy 5V designs or mixed-voltage systems where VDD tolerance matters |
Compared with AT29LV020-70PU and MX29LV200CBTI-70G, the SST39SF020A-70-4I-NHE-T delivers single-supply 5V operation with internal VPP generation and guaranteed industrial temperature performance-reducing system-level complexity while maintaining pin-compatible JEDEC x8 footprint.
Availability
SST39SF020A-70-4I-NHE-T is available at Aetrix Electronics and suitable for industrial PLC firmware storage, automotive ECU bootloader memory, medical device configuration storage, networking equipment boot image, and embedded microcontroller program memory requiring stable component supply across extended product lifecycles.
Supply support for SST39SF020A-70-4I-NHE-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 Inc. is a leading provider of microcontrollers, analog components, and Flash memory solutions, serving industrial, automotive, and consumer markets with vertically integrated silicon and software platforms.
The SST39SF020A belongs to Microchip's Multi-Purpose Flash (MPF) product line, engineered for cost-sensitive, high-reliability embedded systems requiring field-upgradable nonvolatile storage without external high-voltage circuitry.
FAQ
What is the maximum operating frequency supported by SST39SF020A-70-4I-NHE-T?
The SST39SF020A-70-4I-NHE-T does not operate at a clock frequency-it is an asynchronous parallel Flash memory. Its 70 ns read access time corresponds to a maximum effective bus speed of approximately 14 MHz when interfaced with a microcontroller using standard wait-state logic. The device has no internal clock input and relies on CE#, OE#, and WE# timing per JEDEC specifications.
Does SST39SF020A-70-4I-NHE-T require an external VPP voltage for programming?
No, the SST39SF020A-70-4I-NHE-T integrates an internal charge pump and generates all necessary high voltages for programming and erasing internally. It operates from a single 4.5V–5.5V supply-no external VPP pin or circuitry is required, simplifying board design and reducing component count compared to older Flash devices like the AT29LV020.
How many erase cycles can SST39SF020A-70-4I-NHE-T endure before failure?
The SST39SF020A-70-4I-NHE-T is rated for a minimum of 10,000 erase/program cycles per JEDEC Standard A117. This is a device-level qualification-each sector inherits the same endurance, and wear leveling must be implemented in system firmware if uniform usage across sectors is required. Endurance is verified at full industrial temperature range (–40°C to +85°C).
What package type is used for SST39SF020A-70-4I-NHE-T?
The SST39SF020A-70-4I-NHE-T uses a 32-lead TSOP (Thin Small Outline Package) with standard JEDEC x8 Flash pinout. Pin 1 is NC (no connection), and pin 30 is A17-confirmed specifically for the SST39SF020A variant. The "NHE" suffix denotes this TSOP packaging, RoHS compliance, and industrial temperature grade.
Can SST39SF020A-70-4I-NHE-T be used as a direct replacement for SST39SF020A-70-4C-NHE-T?
Yes-the SST39SF020A-70-4I-NHE-T is functionally identical to the SST39SF020A-70-4C-NHE-T except for temperature grade: "I" denotes Industrial (–40°C to +85°C), while "C" denotes Commercial (0°C to +70°C). All electrical specifications, timing, pinout, and command sets are identical; only the tested operating temperature range differs.
SST39SF020A-70-4I-NHE-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- SST39 MPF™
- Package/Case:
- 32-LCC (J-Lead)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- 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:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-PLCC (11.43x13.97)
SST39SF020A-70-4I-NHE-T FAQ
1.How can I place an order for SST39SF020A-70-4I-NHE-T through Aetrix?
Please submit a Request for Quotation (RFQ) for SST39SF020A-70-4I-NHE-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 SST39SF020A-70-4I-NHE-T reliable?
The price and inventory of SST39SF020A-70-4I-NHE-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SST39SF020A-70-4I-NHE-T is usually 5 days.
3.What payment methods are accepted for SST39SF020A-70-4I-NHE-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST39SF020A-70-4I-NHE-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST39SF020A-70-4I-NHE-T?
SST39SF020A-70-4I-NHE-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST39SF020A-70-4I-NHE-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 SST39SF020A-70-4I-NHE-T?
For technical support, including SST39SF020A-70-4I-NHE-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST39SF020A-70-4I-NHE-T requirements.
6.How does Aetrix verify that SST39SF020A-70-4I-NHE-T is sourced from the original manufacturer or authorized distributors?
All SST39SF020A-70-4I-NHE-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 SST39SF020A-70-4I-NHE-T meets industry standards.
7.What is the process for return or replacement of SST39SF020A-70-4I-NHE-T?
All SST39SF020A-70-4I-NHE-T units undergo pre-shipment inspection (PSI). If there is an issue with SST39SF020A-70-4I-NHE-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 SST39SF020A-70-4I-NHE-T part is unused and in its original packaging.
Return procedure for SST39SF020A-70-4I-NHE-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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