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Microchip Technology SST39SF040-70-4C-PHE
- Part No.:
- SST39SF040-70-4C-PHE
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-DIP (0.600", 15.24mm)
- Datasheet:
-
SST39SF040-70-4C-PHE.pdf
- Description:
- IC FLASH 4MBIT PARALLEL 32DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,523
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Product details
Overview
SST39SF040-70-4C-PHE from Microchip Technology is a 4-Mbit (512K × 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, serving as nonvolatile code/data storage in embedded microcontroller systems requiring field-upgradable firmware.
For engineers reviewing the SST39SF040-70-4C-PHE datasheet, SST39SF040-70-4C-PHE pinout, SST39SF040-70-4C-PHE application, or SST39SF040-70-4C-PHE equivalent, key selection criteria include JEDEC-standard x8 Flash command set compatibility, TTL I/O interface, hardware/software data protection, and support for byte-program and sector-erase operations without external VPP.
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 where timing degrades over endurance life. Its control logic accepts standard microprocessor write sequences to initiate Byte Program, Sector Erase, Chip Erase, and Software ID operations via CE#/WE#/OE# handshake.
The SST39SF040-70-4C-PHE supports two end-of-write detection methods-Data# Polling (DQ7) and Toggle Bit (DQ6)-both valid after the rising edge of the fourth (Program) or sixth (Erase) WE# pulse. Pin-compatible across the SST39SF010A/020A/040 family, it uses A18 as the most significant address line (AMS), distinguishing it from the 1-Mbit and 2-Mbit variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4 Mbit (512K × 8), directly maps to 19-bit address space (A0–A18) |
| Read Access Time | 70 ns maximum - enables direct interfacing with 14 MHz microcontrollers without wait states |
| Supply Voltage | 4.5V–5.5V - operates from standard 5V logic rails; no auxiliary voltage required |
| Endurance | 10,000 minimum cycles (JEDEC A117) - validated for high-reliability industrial firmware updates |
| Data Retention | 100 years minimum (JEDEC A103) - ensures long-term validity of stored configuration or boot code |
| Active Current | 25 mA max at 70 ns read - defines peak power draw during instruction fetch or data read bursts |
| Standby Current | 3 mA max (TTL input) / 100 µA max (CMOS input) - enables low-power sleep modes in battery-backed systems |
Pinout & Package
32-pin PDIP package (PHE suffix), with 32-lead PLCC and TSOP variants also available. Pin 1 = A18 (not NC), Pin 30 = A17 - confirming full 19-bit addressing capability specific to the SST39SF040 variant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A18 | Address Inputs | A18 is active (not NC), enabling full 512K-byte addressing; AMS = A18 per JEDEC-compliant command sequencing |
| DQ0–DQ7 | Data I/O | Bi-directional x8 bus; outputs tri-stated when CE# or OE# high; latched internally during writes |
| CE# | Chip Enable | Active-low chip select; must be low for all operations except Standby mode |
| OE# | Output Enable | Active-low output gate; controls DQ bus drive only during Read; ignored during Write/Erase |
| WE# | Write Enable | Active-low write strobe; initiates command loading and internal Program/Erase timing sequences |
| VDD | Power Supply | 4.5V–5.5V main supply; powers core logic, memory array, and I/O buffers |
| VSS | Ground | Reference return path for all digital and analog circuitry |
| NC | No Connection | Pins 1 and 30 are functional (A18/A17); no true NC pins on SST39SF040 in PDIP |
Key Features
| Feature | Design Value |
|---|---|
| Uniform 4-Kbyte sectors | Enables granular firmware patching without erasing entire memory - reduces update time and wear leveling overhead |
| Internal VPP generation | Eliminates need for external high-voltage programming supply - simplifies board design and reduces BOM cost |
| Toggle Bit & Data# Polling | Allows host processor to poll status without halting execution - improves system throughput during background writes |
| JEDEC-standard pinout/command set | Ensures drop-in compatibility with legacy x8 Flash designs and existing driver software stacks |
| Hardware + Software Data Protection | Prevents accidental writes during power-up/down via noise filtering, VDD monitoring, and 3-/6-byte unlock sequences |
Applications
| Industrial PLC Firmware Storage | Medical Device Configuration Memory |
|---|---|
Use Scenario: Storing programmable logic controller firmware that requires periodic field updates via serial interface. IC Role / Device Role / Timing Role: Nonvolatile code storage with byte-level reprogrammability and sector-erase granularity. Use Value: Enables secure, in-system firmware upgrades without removing the module - reducing maintenance downtime and service costs. | Use Scenario: Holding calibrated sensor offsets and user-defined therapy parameters in portable diagnostic equipment. IC Role / Device Role / Timing Role: Reliable configuration memory retaining settings across power cycles and battery swaps. Use Value: Guarantees >100-year data retention - meeting FDA requirements for long-lifecycle medical devices. |
| Automotive ECU Bootloader Memory | Networking Equipment Boot Image Storage |
Use Scenario: Hosting bootloader code in engine control units operating across -40°C to +85°C ambient range. IC Role / Device Role / Timing Role: Industrial-grade Flash memory supporting AEC-Q100-aligned temperature profile and robust write protection. Use Value: Delivers 10,000-cycle endurance and hardware glitch immunity - ensuring safe reprogramming during vehicle service. | Use Scenario: Storing primary and fallback boot images in managed Ethernet switches requiring zero-downtime firmware rollback. IC Role / Device Role / Timing Role: Dual-image nonvolatile storage with fast 70 ns read access and sector-level erase isolation. Use Value: Allows atomic image switching via sector boundary alignment - eliminating partial-update corruption risk. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AM29LV040B-70RDI | 4-Mbit x8, 70 ns, 3.0V core (3.0V–3.6V I/O), requires external VPP for programming | Lower voltage operation; not pin-compatible due to different VPP pin and command set | Select for 3.3V systems where lower power consumption outweighs need for external high-voltage generator |
| MX29LV040CTTI-70G | 4-Mbit x8, 70 ns, 3.0V–3.6V supply, supports CFI query, no internal VPP | CFI-compliant command interface; different pinout (32-pin TSOP only) and timing margins | Choose when migrating to standardized CFI-based flash management firmware across multiple vendors |
Compared with AM29LV040B-70RDI and MX29LV040CTTI-70G, the SST39SF040-70-4C-PHE provides native 5V operation, integrated VPP generation, and JEDEC-standard command compatibility - making it optimal for legacy 5V microcontroller designs requiring minimal layout changes and proven field reliability.
Availability
SST39SF040-70-4C-PHE is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device configuration memory, and automotive ECU bootloader applications requiring stable component supply across extended product lifecycles.
Supply support for SST39SF040-70-4C-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 global provider of microcontroller, analog, FPGA, and Flash memory solutions, headquartered in Chandler, Arizona.
The SST39SF040-70-4C-PHE belongs to Microchip's SST39SFx family of Multi-Purpose Flash devices, designed specifically for cost-sensitive, 5V embedded systems needing reliable, field-upgradable nonvolatile storage with JEDEC-standard interoperability.
FAQ
What is the memory organization of the SST39SF040-70-4C-PHE?
The SST39SF040-70-4C-PHE is organized as 512K × 8 (4 Mbit), using address lines A0–A18 for full 19-bit addressing. This matches the "SST39SF040" designation in its part number and distinguishes it from the 128K × 8 (SST39SF010A) and 256K × 8 (SST39SF020A) variants in the same family. The SST39SF040-70-4C-PHE implements uniform 4-Kbyte sectors across the entire array.
Does the SST39SF040-70-4C-PHE require an external VPP voltage for programming?
No, the SST39SF040-70-4C-PHE integrates internal VPP generation and operates entirely from a single 4.5V–5.5V supply for both read and write operations. This eliminates the need for external high-voltage circuitry, simplifying PCB layout and reducing system cost - a key advantage over older Flash families like the AMD Am29F series.
How does the SST39SF040-70-4C-PHE indicate completion of a Byte Program operation?
The SST39SF040-70-4C-PHE supports two hardware-supported status detection methods: Data# Polling (monitoring DQ7) and Toggle Bit (monitoring DQ6). Both become valid after the rising edge of the fourth WE# or CE# pulse. DQ7 returns true data upon completion; DQ6 stops toggling. These mechanisms allow the host to avoid fixed delays and optimize write throughput.
What is the endurance and data retention specification for the SST39SF040-70-4C-PHE?
The SST39SF040-70-4C-PHE is rated for a minimum of 10,000 program/erase cycles (JEDEC A117) and guarantees greater than 100 years of data retention (JEDEC A103) under specified operating conditions. These values are measured and qualified - not typical estimates - and apply to the full memory array, not per-sector averages.
Is the SST39SF040-70-4C-PHE RoHS compliant and what packages are offered?
Yes, the SST39SF040-70-4C-PHE is RoHS compliant per Microchip's documentation. It is available in three industry-standard packages: 32-pin PDIP (PHE suffix), 32-lead PLCC, and 32-lead TSOP. The "PHE" in the part number explicitly denotes the 32-pin plastic dual in-line package variant.
SST39SF040-70-4C-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:
- Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH
- Memory Size:
- 4Mbit
- Memory Organization:
- 512K 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
SST39SF040-70-4C-PHE FAQ
1.How can I place an order for SST39SF040-70-4C-PHE through Aetrix?
Please submit a Request for Quotation (RFQ) for SST39SF040-70-4C-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 SST39SF040-70-4C-PHE reliable?
The price and inventory of SST39SF040-70-4C-PHE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SST39SF040-70-4C-PHE is usually 5 days.
3.What payment methods are accepted for SST39SF040-70-4C-PHE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST39SF040-70-4C-PHE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST39SF040-70-4C-PHE?
SST39SF040-70-4C-PHE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST39SF040-70-4C-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 SST39SF040-70-4C-PHE?
For technical support, including SST39SF040-70-4C-PHE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST39SF040-70-4C-PHE requirements.
6.How does Aetrix verify that SST39SF040-70-4C-PHE is sourced from the original manufacturer or authorized distributors?
All SST39SF040-70-4C-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 SST39SF040-70-4C-PHE meets industry standards.
7.What is the process for return or replacement of SST39SF040-70-4C-PHE?
All SST39SF040-70-4C-PHE units undergo pre-shipment inspection (PSI). If there is an issue with SST39SF040-70-4C-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 SST39SF040-70-4C-PHE part is unused and in its original packaging.
Return procedure for SST39SF040-70-4C-PHE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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