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Microchip Technology SST39SF020A-70-4C-PHE
- Part No.:
- SST39SF020A-70-4C-PHE
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-DIP (0.600", 15.24mm)
- Datasheet:
-
SST39SF020A-70-4C-PHE.pdf
- Description:
- IC FLASH 2MBIT PARALLEL 32DIP
- Quantity:
- Payment:
- Shipping:
Inventory:424
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Product details
Overview
SST39SF020A-70-4C-PHE 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-70-4C-PHE datasheet, SST39SF020A-70-4C-PHE pinout, SST39SF020A-70-4C-PHE application, or SST39SF020A-70-4C-PHE equivalent, key selection criteria include its 70 ns read timing, 100,000-cycle endurance, 100-year data retention, sector-level erase capability, and hardware/software write protection - all validated for commercial temperature range (0°C to +70°C) and PDIP/PLCC/TSOP-32 packages.
Technical Context
This device implements Microchip's SuperFlash® technology with split-gate cell design and thick-oxide tunneling injector, enabling fixed erase/program times independent of cycle count - unlike conventional Flash technologies where timing degrades with usage. It supports standard microprocessor bus protocols via TTL-compatible CE#, OE#, and WE# control signals.
The SST39SF020A-70-4C-PHE uses software command sequences (e.g., six-byte sector erase, three-byte byte program) compliant with JEDEC Flash EEPROM standards. End-of-write detection is implemented via Data# Polling (DQ7) and Toggle Bit (DQ6), allowing host systems to poll asynchronously without busy-wait overhead.
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 CPU wait-state requirement for zero-wait-state operation at ≤14 MHz |
| Endurance | 100,000 program/erase cycles per sector - supports frequent firmware updates in industrial controllers |
| Data Retention | Greater than 100 years - ensures long-term reliability without refresh in unpowered storage applications |
| Supply Voltage | 4.5V–5.5V single supply - compatible with legacy 5V logic systems without level-shifting |
| Operating Temperature | 0°C to +70°C (Commercial grade) - validated for office, consumer, and light-industrial ambient conditions |
| Write Timing | Byte Program: 14 µs typical; Sector Erase: 18 ms typical - enables rapid in-system reprogramming |
Pinout & Package
Package: 32-Lead Plastic Dual In-line Package (PDIP), RoHS-compliant, through-hole mountable. Pin 1 is NC (no connection); Pin 30 is A17 for SST39SF020A (confirms 2-Mbit addressing up to A17).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A17 | Address Inputs | 18-bit address bus supporting 256K × 8 memory space; A17 is active (not NC) for SST39SF020A |
| DQ0–DQ7 | Data I/O | 8-bit bidirectional data bus with internal latching and tri-state output controlled by CE#/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 tristate independently of CE# |
| WE# | Write Enable | Active-low write strobe; initiates byte program, sector erase, or chip erase on falling/rising edge sequences |
| VDD | Power Supply | +4.5V to +5.5V supply input; powers all internal logic and SuperFlash® programming circuitry |
| VSS | Ground | Reference ground for all I/O and core logic; requires low-impedance PCB return path |
Key Features
| Feature | Design Value |
|---|---|
| Uniform 4-Kbyte Sector Erase | Enables selective firmware patching without erasing full memory - reduces update time and wear on unused sectors |
| Internal VPP Generation | Eliminates need for external high-voltage programming supply - simplifies board design and reduces BOM cost |
| TTL I/O Compatibility | Direct interface with 5V microcontrollers (e.g., 8051, PIC18) without level translators or pull-up resistors |
| Hardware + Software Write Protection | Prevents accidental writes during power-up/down via noise/glitch filtering, VDD monitoring, and JEDEC-standard SDP commands |
| Toggle Bit & Data# Polling | Allows host CPU to perform other tasks while flash operations execute - improves system throughput and responsiveness |
Applications
| Industrial PLC Firmware Storage | Embedded Network Router Boot Code |
|---|---|
|
Use Scenario: Storing and updating ladder logic firmware in programmable logic controllers deployed in factory automation environments. IC Role / Device Role / Timing Role: Nonvolatile boot memory holding executable code executed directly by the PLC's microcontroller upon power-on reset. Use Value: 100,000-cycle endurance and 100-year retention ensure reliable operation across decades of scheduled firmware upgrades without memory replacement. |
Use Scenario: Holding bootloader and initial configuration images in residential and SMB network routers with field-upgrade capability. IC Role / Device Role / Timing Role: Parallel x8 interface Flash providing fast read access (<70 ns) for CPU instruction fetch during boot sequence. Use Value: Sector erase allows partial image updates (e.g., security patches) without disrupting full router operation or requiring full reflash downtime. |
| Medical Device Configuration Memory | Automotive Diagnostic Tool Firmware |
|
Use Scenario: Storing calibration tables, user preferences, and regulatory compliance settings in portable ultrasound or ECG units. IC Role / Device Role / Timing Role: Secure, write-protected nonvolatile memory accessed only during setup or maintenance mode. Use Value: Hardware and software data protection (SDP) prevents corruption from EMI or brown-out events during clinical use. |
Use Scenario: Hosting diagnostic application firmware in handheld OBD-II scanners used for vehicle service and emissions testing. IC Role / Device Role / Timing Role: Field-upgradable code storage interfaced to an 8-bit MCU via standard parallel bus. Use Value: Single 5V supply and JEDEC compatibility simplify integration into cost-sensitive automotive test equipment designs. |
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, 70 ns, 3.0V–3.6V supply only - requires level-shifting for 5V systems | Designed for low-voltage embedded systems; lacks 5V tolerance and hardware write inhibit at power-up | Select if migrating to 3.3V platform; avoid for legacy 5V designs without voltage translation |
| MX29LV200CBTI-70G | 2-Mbit, 70 ns, 3.0V–3.6V supply; supports CFI query and wider command set but no internal VPP generation | Requires external 12V programming voltage; higher pin count (44-pin TSOP) | Choose for CFI-compliant systems needing standardized driver support; not drop-in for SST39SF020A-70-4C-PHE |
Compared with AT29LV020-70PU and MX29LV200CBTI-70G, the SST39SF020A-70-4C-PHE delivers true 5V operation, integrated VPP, and simpler JEDEC command sequencing - making it optimal for cost-sensitive, 5V-based industrial and consumer electronics where layout simplicity and supply count matter.
Availability
SST39SF020A-70-4C-PHE is available at Aetrix Electronics and suitable for industrial PLC firmware storage, embedded network router boot code, medical device configuration memory, and automotive diagnostic tool firmware requiring stable component supply across extended production lifecycles.
Supply support for SST39SF020A-70-4C-PHE 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 microcontroller, analog, FPGA, and memory solutions, serving industrial, automotive, and consumer markets with high-reliability semiconductor products.
The SST39SF020A-70-4C-PHE belongs to Microchip's SST39SFx family of Multi-Purpose Flash devices, designed specifically for cost-effective, 5V-compatible in-system programmable nonvolatile memory in legacy and mixed-voltage embedded systems.
FAQ
What is the memory organization of the SST39SF020A-70-4C-PHE?
The SST39SF020A-70-4C-PHE is organized as 256K × 8, delivering 2 Mbit (256,000 bytes) of addressable nonvolatile storage. Its 18 address lines (A0–A17) fully decode the 256K space, with A17 active - distinguishing it from the 1-Mbit SST39SF010A (A16 max) and confirming its 2-Mbit capacity. This structure supports direct byte-level reads and writes without banking or interleaving.
Does the SST39SF020A-70-4C-PHE require an external high-voltage supply for programming?
No, the SST39SF020A-70-4C-PHE does not require an external high-voltage supply. It features internal VPP generation, enabling full byte program and sector erase operations using only the standard 4.5V–5.5V VDD supply. This eliminates the need for dedicated programming voltages or external charge pumps, reducing system complexity and PCB footprint.
How is write protection implemented on the SST39SF020A-70-4C-PHE?
The SST39SF020A-70-4C-PHE implements dual-layer write protection: hardware-level safeguards (noise/glitch filtering, VDD power-up/down detection, and write-inhibit mode) plus JEDEC-standard Software Data Protection (SDP). SDP requires validated three-byte (program) or six-byte (erase) command sequences - preventing accidental writes during power transitions or software faults.
What package types are available for the SST39SF020A-70-4C-PHE?
The SST39SF020A-70-4C-PHE is offered in three industry-standard packages: 32-pin PDIP (through-hole), 32-lead PLCC (J-lead), and 32-lead TSOP (surface-mount). The "-PHE" suffix in the part number specifically denotes the 32-pin PDIP variant. All packages share identical pinouts and electrical specifications, enabling footprint interchangeability in multi-source designs.
Can the SST39SF020A-70-4C-PHE be used in industrial temperature applications?
The SST39SF020A-70-4C-PHE is rated for commercial temperature range (0°C to +70°C) per its "-4C" suffix. For industrial applications requiring -40°C to +85°C operation, Microchip offers the SST39SF020A-70-4I-PHE variant. Using the "-4C" version outside its specified range may result in timing violations, increased error rates, or premature wear - thermal validation is required for extended-range deployment.
SST39SF020A-70-4C-PHE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- SST39 MPF™
- Package/Case:
- 32-DIP (0.600", 15.24mm)
- Packaging:
- Tube
- 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:
- Through Hole
- Supplier Device Package:
- 32-PDIP
SST39SF020A-70-4C-PHE FAQ
1.How can I place an order for SST39SF020A-70-4C-PHE through Aetrix?
Please submit a Request for Quotation (RFQ) for SST39SF020A-70-4C-PHE 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-PHE reliable?
The price and inventory of SST39SF020A-70-4C-PHE 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-PHE is usually 5 days.
3.What payment methods are accepted for SST39SF020A-70-4C-PHE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST39SF020A-70-4C-PHE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST39SF020A-70-4C-PHE?
SST39SF020A-70-4C-PHE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST39SF020A-70-4C-PHE 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-PHE?
For technical support, including SST39SF020A-70-4C-PHE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST39SF020A-70-4C-PHE requirements.
6.How does Aetrix verify that SST39SF020A-70-4C-PHE is sourced from the original manufacturer or authorized distributors?
All SST39SF020A-70-4C-PHE 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-PHE meets industry standards.
7.What is the process for return or replacement of SST39SF020A-70-4C-PHE?
All SST39SF020A-70-4C-PHE units undergo pre-shipment inspection (PSI). If there is an issue with SST39SF020A-70-4C-PHE, 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-PHE part is unused and in its original packaging.
Return procedure for SST39SF020A-70-4C-PHE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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