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Microchip Technology SST39SF020A-70-4C-NHE-T
- Part No.:
- SST39SF020A-70-4C-NHE-T
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-LCC (J-Lead)
- Datasheet:
-
SST39SF020A-70-4C-NHE-T.pdf
- Description:
- IC FLASH 2MBIT PARALLEL 32PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:4,072
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Product details
Overview
SST39SF020A-70-4C-NHE-T from Microchip Technology is a 2-Mbit (256K × 8) CMOS Multi-Purpose Flash memory IC with 70 ns read access time, single 4.5V–5.5V supply operation, and uniform 4-Kbyte sector erase architecture. It implements SuperFlash® technology for high reliability, supports TTL I/O compatibility, and is used in embedded firmware storage, BIOS/UEFI code storage, and industrial controller configuration memory.
For engineers reviewing the SST39SF020A-70-4C-NHE-T datasheet, SST39SF020A-70-4C-NHE-T pinout, SST39SF020A-70-4C-NHE-T application, or SST39SF020A-70-4C-NHE-T equivalent, key selection criteria include sector-erase timing (18 ms typ), byte-program time (14 µs typ), JEDEC-standard x8 flash command set, and RoHS-compliant 32-lead TSOP packaging.
Technical Context
This device belongs to Microchip's SST39SFx family of parallel-interface flash memories using split-gate SuperFlash® technology, enabling fixed erase/program times independent of cycle count. Its control logic accepts standard microprocessor write sequences with CE#, OE#, and WE# signals, and supports both CE#- and WE#-controlled operations per JEDEC pinout and command definitions.
The SST39SF020A-70-4C-NHE-T features hardware data protection (noise/glitch filtering, VDD power-up detection, write-inhibit mode) and software data protection (three-byte sequence for byte program, six-byte sequence for sector/chip erase). End-of-write detection uses Toggle Bit (DQ6) and Data# Polling (DQ7), both valid after defined WE#/CE# edge counts.
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 maximum - determines minimum bus cycle time in 8-bit parallel microcontroller interfaces |
| Supply Voltage | 4.5V–5.5V - compatible with legacy 5V TTL systems without level-shifting |
| Byte Program Time | 14 µs typical - enables fast field updates of small firmware patches or configuration parameters |
| Sector Erase Time | 18 ms typical - allows selective reprogramming of 4-Kbyte sectors without full-chip erasure |
| Data Retention | Greater than 100 years - ensures long-term validity of stored boot code or calibration data |
| Endurance | 100,000 erase/write cycles per sector - supports frequent firmware upgrades in industrial controllers |
Pinout & Package
Package: 32-lead TSOP (Thin Small Outline Package), RoHS-compliant, surface-mount, 12.0 mm × 20.0 mm footprint per Microchip DS20005022F.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit address bus supporting 131,072 bytes; A16 is MSB for SST39SF020A (256K × 8) |
| DQ0–DQ7 | Data Input/Output | 8-bit bidirectional data bus with tri-state outputs controlled by CE# and OE# |
| CE# | Chip Enable | Active-low chip select; device enters standby (30 µA) when high |
| OE# | Output Enable | Active-low output gate; controls data bus visibility during read cycles |
| WE# | Write Enable | Active-low control for program/erase command latching and internal timing initiation |
| VDD | Power Supply | 4.5V–5.5V main supply; powers all internal logic and memory array |
| VSS | Ground | Reference return path for all signals and power |
| NC | No Connection | Pins 1 and 30 are NC for SST39SF020A (A18/A17 used only on SST39SF040) |
Key Features
| Feature | Design Value |
|---|---|
| SuperFlash® Technology | Fixed 14 µs byte-program and 18 ms sector-erase times across full lifetime - eliminates software derating for wear |
| JEDEC-Compliant Command Set | Standard x8 flash command sequences (e.g., 5555H/2AAAH/A0H for program) - ensures drop-in compatibility with existing 5V flash drivers |
| Dual Write Completion Detection | Toggle Bit (DQ6) and Data# Polling (DQ7) - enables efficient polling-based firmware update routines without busy-wait overhead |
| Hardware + Software Data Protection | Glitch immunity (<5 ns), VDD lockout (<2.5V), and mandatory 3-/6-byte unlock sequences - prevents corruption during brown-out or reset |
| Uniform 4-Kbyte Sectors | 64 independent erasable blocks - allows granular firmware partitioning (e.g., bootloader, app, config each in separate sector) |
Applications
| Industrial PLC Firmware Storage | Embedded Network Router Boot Code |
|---|---|
Use Scenario: Storing firmware images and runtime configuration in programmable logic controllers operating in harsh factory environments. IC Role / Device Role / Timing Role: Nonvolatile code storage with parallel x8 interface, accessed via microcontroller address/data bus during cold boot and field upgrade. Use Value: 100,000-cycle endurance and >100-year data retention ensure reliable operation over 15+ year product lifecycles without refresh. |
Use Scenario: Holding boot loader and initial firmware for network infrastructure equipment requiring secure, field-upgradable code. IC Role / Device Role / Timing Role: Primary boot memory mapped at CPU reset vector; supports in-system programming via JTAG or serial management interface. Use Value: 70 ns read access enables fast instruction fetch; sector erase allows safe dual-bank firmware updates without service interruption. |
| Medical Device Calibration Data | Automotive Body Control Module (BCM) Configuration |
Use Scenario: Storing calibrated sensor offsets and safety-critical operational parameters in diagnostic imaging systems. IC Role / Device Role / Timing Role: Secure, tamper-resistant parameter storage accessed during device power-on self-test (POST). Use Value: Hardware write-inhibit and software data protection prevent accidental overwrite during ESD events or power transients. |
Use Scenario: Holding vehicle-specific configuration tables (e.g., lighting profiles, door lock logic) in automotive BCMs. IC Role / Device Role / Timing Role: EEPROM-replacement nonvolatile memory interfaced to 8-bit MCU via parallel bus for low-latency parameter reads. Use Value: 4.5V–5.5V operation matches automotive 5V rail; RoHS compliance meets IATF 16949 material requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar parallel-interface flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AM29LV040B-70EC | 4-Mbit (512K × 8), 70 ns access, 3.0V–3.6V supply only - requires level-shifting for 5V systems | Not suitable for direct 5V bus replacement; better for newer 3.3V designs with higher density needs | Select only if migrating to 3.3V architecture and requiring >2 Mbit capacity |
| SST39VF020-70-4C-NHE | 2-Mbit, 70 ns, but 2.7V–3.6V supply range - incompatible with 5V-only systems | Designed for low-voltage portable/embedded use; lacks 5V tolerance and hardware glitch protection | Choose only for battery-powered or 3.3V-native designs where power efficiency outweighs 5V compatibility |
Compared with AM29LV040B-70EC and SST39VF020-70-4C-NHE, the SST39SF020A-70-4C-NHE-T uniquely supports 4.5V–5.5V operation with full JEDEC x8 command compatibility and robust 5V-system hardware protection - making it the sole drop-in solution for legacy 5V microcontroller firmware storage upgrades.
Availability
SST39SF020A-70-4C-NHE-T is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device calibration data retention, and automotive BCM configuration requiring stable component supply across extended product lifecycles.
Supply support for SST39SF020A-70-4C-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 nonvolatile memory solutions, serving industrial, automotive, and consumer markets with vertically integrated silicon and software.
The SST39SFx family was designed specifically for cost-sensitive, high-reliability 5V embedded systems requiring field-upgradable firmware storage - leveraging SuperFlash® technology to deliver superior endurance and timing consistency versus conventional flash.
FAQ
What is the memory organization of the SST39SF020A-70-4C-NHE-T?
The SST39SF020A-70-4C-NHE-T is organized as 256K × 8, providing 2 Mbit (262,144 bytes) of byte-addressable nonvolatile memory. Its 17 address lines (A0–A16) support full addressing, and it uses uniform 4-Kbyte sectors for erase operations - 64 sectors total. This structure is confirmed in Microchip DS20005022F, page 1 and Table 2-1.
Does the SST39SF020A-70-4C-NHE-T support 5V-only operation?
Yes, the SST39SF020A-70-4C-NHE-T operates exclusively within 4.5V–5.5V, making it fully compatible with legacy 5V TTL systems. It does not support 3.3V or mixed-voltage operation. This is specified in the Operating Range table (DS20005022F, page 9) and distinguishes it from lower-voltage variants like SST39VF020.
How is write completion detected on the SST39SF020A-70-4C-NHE-T?
The SST39SF020A-70-4C-NHE-T provides two hardware-supported methods: Toggle Bit (DQ6 toggles until operation completes) and Data# Polling (DQ7 returns complemented data during write, true data upon completion). Both are valid after the fourth WE# or CE# edge for byte program, and sixth edge for erase - detailed in Sections 3.5–3.7 of DS20005022F.
What package type is used for the SST39SF020A-70-4C-NHE-T?
The SST39SF020A-70-4C-NHE-T uses a 32-lead TSOP (Thin Small Outline Package), as indicated by the "NHE" suffix and confirmed in the Packages section (DS20005022F, page 1). Pin assignments match JEDEC-standard x8 flash layout, with NC on pins 1 and 30 for this 2-Mbit variant.
Is the SST39SF020A-70-4C-NHE-T RoHS compliant?
Yes, the SST39SF020A-70-4C-NHE-T is RoHS compliant, as explicitly stated in the Features list on page 1 of DS20005022F. This applies to all devices in the SST39SF010A/020A/040 family and is verified through Microchip's material declarations and manufacturing certifications.
SST39SF020A-70-4C-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:
- 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:
- 4.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-PLCC (11.43x13.97)
SST39SF020A-70-4C-NHE-T FAQ
1.How can I place an order for SST39SF020A-70-4C-NHE-T through Aetrix?
Please submit a Request for Quotation (RFQ) for SST39SF020A-70-4C-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-70-4C-NHE-T reliable?
The price and inventory of SST39SF020A-70-4C-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-70-4C-NHE-T is usually 5 days.
3.What payment methods are accepted for SST39SF020A-70-4C-NHE-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST39SF020A-70-4C-NHE-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST39SF020A-70-4C-NHE-T?
SST39SF020A-70-4C-NHE-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST39SF020A-70-4C-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-70-4C-NHE-T?
For technical support, including SST39SF020A-70-4C-NHE-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST39SF020A-70-4C-NHE-T requirements.
6.How does Aetrix verify that SST39SF020A-70-4C-NHE-T is sourced from the original manufacturer or authorized distributors?
All SST39SF020A-70-4C-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-70-4C-NHE-T meets industry standards.
7.What is the process for return or replacement of SST39SF020A-70-4C-NHE-T?
All SST39SF020A-70-4C-NHE-T units undergo pre-shipment inspection (PSI). If there is an issue with SST39SF020A-70-4C-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-70-4C-NHE-T part is unused and in its original packaging.
Return procedure for SST39SF020A-70-4C-NHE-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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