SST39SF010A-70-4I-WHE Microchip Integrated Circuit (Small Outline Packages) In Stock
The SST39SF010A-70-4I-WHE is a Microchip 1 Mbit (128 KB) parallel NOR Flash memory with 70 ns maximum read access time and 100,000 write/erase cycle endurance in a 32-pin TSOP package. It features a command user interface and data polling for simplified firmware updates. Available from stock with worldwide shipping.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 32
- Lifecycle
- OBSOLETE
- Datasheet
- SST39SF010A-70-4I-WHE Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.3400(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of SST39SF010A-70-4I-WHE?
- 1 Mbit (128 KB) parallel NOR Flash with 70 ns maximum access time for fast code execution in embedded systems
- 100,000 write/erase cycle endurance supports extensive field firmware updates over the product lifetime
- Command User Interface (CUI) simplifies erase and program operations without requiring complex Flash sequencers
- Data polling and toggle bit status allow host CPUs to monitor write completion without fixed delay timers
What is SST39SF010A-70-4I-WHE used for?
The SST39SF010A-70-4I-WHE is suited for embedded systems requiring a standalone parallel NOR Flash for code storage, BIOS firmware, or parameter storage in legacy and modern microprocessor-based designs. Its 70 ns access time makes it compatible with 8-bit and 16-bit bus architectures running at clock frequencies up to approximately 14 MHz in direct memory-mapped execution. The 32-pin TSOP package is commonly used in industrial controllers, set-top boxes, and networking equipment where in-system reprogramming of firmware is required.
What are the specifications of SST39SF010A-70-4I-WHE?
| Pbfree Code | Yes |
| Manufacturer Package Code | TSOP-32 |
| YTEOL | 0 |
| Access Time-Max | 70ns |
| Command User Interface | YES |
| Data Polling | YES |
| Endurance | 100000 Write/Erase Cycles |
| JESD-30 Code | R-PDSO-G32 |
| Memory Density | 1048576bit |
| Memory IC Type | FLASH |
| Memory Width | 8 |
| Number of Functions | 1 |
| Number of Sectors/Size | 32 |
| Number of Words | 131072words |
| Number of Words Code | 128000 |
| Operating Mode | ASYNCHRONOUS |
| Organization | 128KX8 |
| Output Characteristics | 3-STATE |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP32,.56,20 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Parallel/Serial | PARALLEL |
| Programming Voltage | 5V |
| Qualification Status | Not Qualified |
| Sector Size | 4K |
| Standby Current-Max | 0.0001A |
| Supply Current-Max | 0.025mA |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 4.5V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.5mm |
| Terminal Position | DUAL |
| Toggle Bit | YES |
| Type | NOR TYPE |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | 3A991.B.1.A |
| HTS Code | 8542.32.00.51 |
| Country of Origin | Thailand |
Where can I find the SST39SF010A-70-4I-WHE datasheet?
SST39SF010A-70-4I-WHE Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for SST39SF010A-70-4I-WHE?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What read access time does the SST39SF010A-70-4I-WHE provide and which bus speeds does it support?
The SST39SF010A-70-4I-WHE has a maximum read access time of 70 ns, which allows it to operate with microprocessors running bus cycles as fast as approximately 14 MHz in zero-wait-state mode. For systems running at 8 MHz or slower, the 70 ns access time is well within the read cycle window, enabling direct code execution from Flash without inserting wait states. Faster CPUs above 14 MHz must add 1 or 2 wait states to maintain reliable data setup times.
How many write and erase cycles can the SST39SF010A-70-4I-WHE sustain over a product lifetime?
The SST39SF010A-70-4I-WHE is rated for 100,000 write/erase cycles, meaning the Flash can be completely erased and reprogrammed at least 100,000 times before wear-related failures become probable. For a product updated once per day, this translates to over 273 years of endurance. Even for frequent in-field firmware update scenarios at 10 updates per day, the device would remain within its rated endurance for approximately 27 years.
How does the data polling feature of the SST39SF010A-70-4I-WHE simplify firmware update routines?
Data polling (DQ7) allows the host CPU to continuously read a status bit from the Flash address being programmed; the bit inverts from the data written until the internal write cycle completes, at which point it matches the actual written data. This eliminates fixed busy-wait delays of 10 µs to 20 µs per byte that would be needed without polling, reducing total programming time for a 128 KB image by several seconds. The toggle bit (DQ6) provides an alternative polling method for compatibility with different host software libraries.
For a legacy embedded system migration, is the SST39SF010A-70-4I-WHE pin-compatible with JEDEC-standard 1 Mbit NOR Flash devices?
The SST39SF010A follows the JEDEC-standard 32-pin TSOP pinout used by most 1 Mbit parallel NOR Flash devices including compatible parts from earlier manufacturers. Its command set is compatible with the CFI (Common Flash Interface) standard and the AMD/Fujitsu extended command set, which is recognised by popular bootloaders and BIOS code. Designers replacing end-of-life 1 Mbit Flash ICs should verify the command set variant and VCC range (4.5 V to 5.5 V for this device) before substituting.
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More from Microchip
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $1.4500 | $1.45 |
| 25+ | $1.3900 | $34.75 |
| 100+ | $1.3400 | $134.00 |
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