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Microchip Technology SST39SF020A-70-4I-NHE
- Part No.:
- SST39SF020A-70-4I-NHE
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-LCC (J-Lead)
- Datasheet:
-
SST39SF020A-70-4I-NHE.pdf
- Description:
- IC FLASH 2MBIT PARALLEL 32PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:618
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Product details
Overview
SST39SF020A-70-4I-NHE 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 delivers 100,000 program/erase cycles endurance and >100 years data retention, and is used in embedded firmware storage for industrial controllers requiring field-upgradable code and configuration.
For engineers reviewing the SST39SF020A-70-4I-NHE datasheet, SST39SF020A-70-4I-NHE pinout, SST39SF020A-70-4I-NHE application, or SST39SF020A-70-4I-NHE equivalent, key selection criteria include JEDEC-standard x8 parallel interface compatibility, hardware/software write protection, toggle-bit/data# polling status detection, and TSOP-32 packaging for space-constrained PCB layouts.
Technical Context
This device implements SuperFlash® split-gate technology with thick-oxide tunneling injector, enabling fixed erase/program times independent of cycle count-unlike conventional flash where timing degrades over endurance life. Its control logic accepts standard microprocessor bus cycles and supports both CE#- and WE#-controlled byte programming and sector/chip erase via JEDEC-compliant command sequences.
The SST39SF020A-70-4I-NHE uses AMS = A17 addressing (18 address lines), latched address/data I/O, TTL-compatible signaling, and dual write-protection schemes: hardware-level noise/glitch immunity and software-based three-byte (program) or six-byte (erase) command sequences. It exits Product ID mode via F0H reset and identifies itself as Device ID B6H at address 0001H.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 2 Mbit (256K × 8), directly maps to 256 KB of firmware or configuration storage |
| Read Access Time | 70 ns maximum - enables direct execution from flash (XIP) in 14 MHz system buses |
| Supply Voltage | 4.5V–5.5V single rail - eliminates need for auxiliary voltage regulators in 5V systems |
| Endurance | 10,000 minimum cycles (JEDEC A117), 100,000 typical - supports frequent field updates |
| Data Retention | 100 years minimum (JEDEC A103) - ensures long-term reliability in unpowered storage |
| Active Current | 25 mA max at VDD max - compatible with legacy 5V microcontroller bus loading |
| Standby Current | 100 µA max (CMOS input), 3 mA max (TTL input) - enables low-power sleep modes |
Pinout & Package
Package: 32-lead TSOP (Thin Small Outline Package), 8.8 mm × 13.4 mm body, 0.5 mm lead pitch, RoHS-compliant, industrial temperature grade (–40°C to +85°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit address bus (A0–A16); A17 is internal MSB for 256K-word addressing |
| DQ0–DQ7 | Data Input/Output | 8-bit bidirectional data bus; tri-stated when CE# or OE# high; supports latched writes |
| CE# | Chip Enable | Active-low chip select; must be low for read/write; enables standby current reduction |
| OE# | Output Enable | Active-low output gate; controls DQ[7:0] drive; high-Z when asserted high during reads |
| WE# | Write Enable | Active-low write strobe; initiates byte program, sector erase, or chip erase on rising edge |
| VDD | Power Supply | +4.5V to +5.5V supply; powers core logic and I/O buffers; requires local decoupling |
| VSS | Ground | Reference ground for all signals; must be low-inductance connection to minimize noise |
| NC (Pin 1, Pin 30) | No Connection | Pins 1 and 30 are unconnected in SST39SF020A; not bonded internally per datasheet Figure 2-1 |
Key Features
| Feature | Design Value |
|---|---|
| SuperFlash® Technology | Fixed 18 ms sector erase / 70 ms chip erase times - no software derating required over lifetime |
| Uniform 4-Kbyte Sectors | 64 independent sectors enable granular firmware partitioning and partial reprogramming |
| Toggle Bit & Data# Polling | DQ6 toggling and DQ7 complement-to-data provide real-time, non-blocking write completion detection |
| Hardware + Software Protection | Glitch immunity (<5 ns), VDD lockout (<2.5V), and mandatory 3-/6-byte command sequences prevent accidental writes |
| JEDEC x8 Standard Compliance | Pinout and command set match industry-standard parallel flash - simplifies migration from other vendors |
Applications
| Industrial PLC Firmware Storage | Medical Device Configuration Memory |
|---|---|
|
Use Scenario: Storing and updating ladder logic firmware in programmable logic controllers deployed in factory automation environments with ambient temperatures up to +85°C. IC Role / Device Role / Timing Role: Nonvolatile code storage with XIP-capable 70 ns read access; serves as primary boot ROM and runtime firmware repository. Use Value: Enables remote firmware patches without hardware replacement; 100-year retention ensures calibration data integrity across equipment lifecycle. |
Use Scenario: Holding calibrated sensor offsets, user preferences, and safety-critical configuration parameters in portable diagnostic instruments. IC Role / Device Role / Timing Role: Secure, write-protected configuration memory with hardware/software lockout preventing unintended parameter changes during power transitions. Use Value: Meets IEC 62304 Class C software requirements via deterministic erase/write timing and 10,000-cycle endurance for recalibration events. |
| Telecom Base Station Bootloader | Automotive Infotainment System BIOS |
|
Use Scenario: Hosting bootloader code and FPGA bitstreams in outdoor telecom cabinets exposed to wide thermal cycling and EMI. IC Role / Device Role / Timing Role: High-reliability parallel flash interfaced to ARM9 or MIPS processors; supports fast sector erase for rapid recovery after corrupted updates. Use Value: 4.5V–5.5V operation tolerates brownout conditions; 100,000-cycle endurance accommodates frequent field upgrades over 15+ year deployments. |
Use Scenario: Storing boot firmware and display driver initialization tables in automotive head units operating under AEC-Q100 Grade 3 conditions. IC Role / Device Role / Timing Role: Industrial-grade (–40°C to +85°C) flash memory with hardware write inhibit during power-up/down sequences. Use Value: Eliminates external reset supervisors by integrating VDD monitoring and glitch protection, reducing BOM count and board area. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar parallel Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT29LV020-70PU | 2-Mbit, 70 ns, 3.0V–3.6V only; requires level-shifting in 5V systems | Limited to low-voltage designs; lacks hardware VDD lockout below 2.5V | Choose only if system operates exclusively at 3.3V and needs lower active current |
| MX29LV020C-70G | 2-Mbit, 70 ns, 3.0V–3.6V supply; supports CFI query but no SuperFlash® fixed timing | Timing increases with cycle count; requires software derating for long-life deployments | Select when CFI-compatibility is mandatory for generic flash drivers, not for extended endurance |
Compared with AT29LV020-70PU and MX29LV020C-70G, the SST39SF020A-70-4I-NHE uniquely delivers 4.5V–5.5V operation, fixed erase/program timing over full endurance life, and integrated 2.5V VDD lockout-making it optimal for legacy 5V industrial and automotive platforms requiring zero-timing-drift field updates.
Availability
SST39SF020A-70-4I-NHE is available at Aetrix Electronics and suitable for industrial PLCs, medical diagnostics equipment, telecom base stations, and automotive infotainment systems requiring stable component supply across extended product lifecycles.
Supply support for SST39SF020A-70-4I-NHE 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 global semiconductor company specializing in microcontrollers, analog devices, and nonvolatile memory solutions, with design centers and manufacturing facilities across the Americas, Europe, and Asia.
The SST39SF020A-70-4I-NHE belongs to Microchip's SST39SFx family of Multi-Purpose Flash devices, engineered for cost-effective, high-reliability firmware and configuration storage in industrial, medical, and communications equipment where field upgradability and long-term data integrity are critical.
FAQ
What is the maximum operating temperature range for the SST39SF020A-70-4I-NHE?
The SST39SF020A-70-4I-NHE is rated for industrial temperature operation from –40°C to +85°C, as confirmed in Table 5-1 of the DS20005022F datasheet. This range applies to all electrical and timing specifications including the 70 ns read access time and 100,000-cycle endurance rating. The 'I' suffix in the part number explicitly denotes industrial grade.
Does the SST39SF020A-70-4I-NHE support both CE#- and WE#-controlled write operations?
Yes, the SST39SF020A-70-4I-NHE supports both CE#- and WE#-controlled programming and erase operations, as verified in Figures 7-2 and 7-3 and Section 3.2–3.4 of the datasheet. The timing parameters (TWP, TCP, etc.) are identical for both control methods, and the device treats either signal as valid for initiating byte program, sector erase, or chip erase sequences.
How does the SST39SF020A-70-4I-NHE indicate completion of a Byte Program operation?
The SST39SF020A-70-4I-NHE provides two hardware-supported status detection methods: Toggle Bit (DQ6 toggles between 0/1 until completion) and Data# Polling (DQ7 returns complemented data until complete, then true data). Both are valid after the rising edge of the fourth WE# or CE# pulse, as specified in Sections 3.5–3.7 and Figure 7-13 of the datasheet.
What is the sector architecture of the SST39SF020A-70-4I-NHE?
The SST39SF020A-70-4I-NHE features 64 uniform 4-Kbyte sectors totaling 256 Kbytes, as stated in the "Sector Erase Capability" feature list and Section 3.3. Each sector is independently erasable using the six-byte command sequence with SA address, enabling selective firmware updates without affecting adjacent code or configuration data stored elsewhere in the array.
Is the SST39SF020A-70-4I-NHE pin-compatible with the SST39SF010A or SST39SF040?
No-the SST39SF020A-70-4I-NHE is not fully pin-compatible with SST39SF010A or SST39SF040 due to differing address line assignments: Pin 1 is NC for SST39SF020A but A18 for SST39SF040, and Pin 30 is A17 for SST39SF020A but NC for SST39SF010A (per Figure 2-1 and Table 2-1). While all share the same 32-pin TSOP package, address mapping differs by density.
SST39SF020A-70-4I-NHE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- SST39 MPF™
- Package/Case:
- 32-LCC (J-Lead)
- Packaging:
- Tube
- 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 FAQ
1.How can I place an order for SST39SF020A-70-4I-NHE through Aetrix?
Please submit a Request for Quotation (RFQ) for SST39SF020A-70-4I-NHE 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 reliable?
The price and inventory of SST39SF020A-70-4I-NHE 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 is usually 5 days.
3.What payment methods are accepted for SST39SF020A-70-4I-NHE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST39SF020A-70-4I-NHE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST39SF020A-70-4I-NHE?
SST39SF020A-70-4I-NHE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST39SF020A-70-4I-NHE 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?
For technical support, including SST39SF020A-70-4I-NHE 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 requirements.
6.How does Aetrix verify that SST39SF020A-70-4I-NHE is sourced from the original manufacturer or authorized distributors?
All SST39SF020A-70-4I-NHE 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 meets industry standards.
7.What is the process for return or replacement of SST39SF020A-70-4I-NHE?
All SST39SF020A-70-4I-NHE units undergo pre-shipment inspection (PSI). If there is an issue with SST39SF020A-70-4I-NHE, 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 part is unused and in its original packaging.
Return procedure for SST39SF020A-70-4I-NHE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SST39SF020A-70-4I-NHE Tags
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