My Inquiry
My Account
Microchip Technology SST39SF040-70-4C-NHE-T
- Part No.:
- SST39SF040-70-4C-NHE-T
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-LCC (J-Lead)
- Datasheet:
-
SST39SF040-70-4C-NHE-T.pdf
- Description:
- IC FLASH 4MBIT PARALLEL 32PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:985
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SST39SF040-70-4C-NHE-T from Microchip Technology is a 4-Mbit (512K × 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 SST39SF040-70-4C-NHE-T datasheet, SST39SF040-70-4C-NHE-T pinout, SST39SF040-70-4C-NHE-T application, or SST39SF040-70-4C-NHE-T equivalent, key selection criteria include its 100,000-cycle endurance, 100-year data retention, TTL-compatible I/O, hardware/software write 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 JEDEC-compliant command sets.
The SST39SF040-70-4C-NHE-T uses dual status detection (Data# Polling on DQ7 and Toggle Bit on DQ6) to signal completion of internal Write operations, allowing host systems to poll asynchronously without fixed timeout delays. Address latching occurs on the falling edge of CE# or WE#, while data latching occurs on the rising edge-enabling robust timing margin in 70 ns read cycles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4 Mbit (512K × 8), directly maps to 512 KB of byte-addressable nonvolatile storage |
| Read Access Time | 70 ns maximum - determines minimum bus cycle time for CPU read operations |
| Supply Voltage | 4.5V–5.5V - operates from standard +5V rail without regulation or level-shifting |
| 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 in unattended equipment |
| Byte Program Time | 14 µs typical - enables rapid patching of small code/data segments |
| Sector Erase Time | 18 ms typical - allows selective reprogramming without full chip erase overhead |
| Chip Erase Time | 70 ms typical - provides fast factory reset or bulk initialization capability |
Pinout & Package
32-lead TSOP (Thin Small Outline Package) with standard JEDEC x8 Flash pinout; compatible with industry-standard socket footprints for 32-pin parallel Flash devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A17 | Address Inputs | 18-bit address bus supporting full 512K-byte addressing; A17 is active (not NC) for SST39SF040 |
| 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 only |
| WE# | Write Enable | Active-low control for all write operations (program/erase); initiates command latching |
| VDD | Power Supply | +4.5V to +5.5V supply input; powers core logic and I/O buffers |
| VSS | Ground | Reference ground for all signals and power domains |
| NC | No Connection | Pins 1 (A18) and 30 (A17) are functional for SST39SF040 - no NC pins in this variant |
Key Features
| Feature | Design Value |
|---|---|
| SuperFlash® Technology | Fixed 14 µs byte-program and 18 ms sector-erase times across full endurance life - eliminates software derating |
| Hardware + Software Data Protection | Glitch immunity (<5 ns), VDD power-up/down detection, and JEDEC-compliant 3-/6-byte command lockout prevent accidental writes |
| TTL-Compatible I/O | Direct interface with 5V microcontrollers and FPGAs without level shifters or bus transceivers |
| Uniform 4-Kbyte Sectors | 128 independently erasable sectors enable granular firmware updates and wear leveling |
| Status Detection | DQ7 (Data# Polling) and DQ6 (Toggle Bit) provide real-time, asynchronous write completion signaling |
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. IC Role / Device Role / Timing Role: Nonvolatile program memory mapped into CPU address space; accessed via parallel bus during boot and runtime reflash. Use Value: 100,000-cycle endurance supports quarterly firmware patches over 10+ years; 70 ns access enables real-time scan cycle execution without wait states. |
Use Scenario: Holding calibration coefficients, patient safety thresholds, and regulatory compliance settings in portable diagnostic instruments. IC Role / Device Role / Timing Role: Secure configuration storage with hardware/software write protection to prevent unauthorized parameter changes. Use Value: Greater than 100-year data retention ensures integrity across product lifetime; sector erase allows safe update of individual parameters without corrupting critical safety data. |
| Automotive ECU Bootloader Storage | Networking Equipment Image Backup |
|
Use Scenario: Hosting secondary bootloader and recovery image in engine control units subject to extended temperature cycling (-40°C to +85°C). IC Role / Device Role / Timing Role: Redundant nonvolatile memory partitioned for fail-safe firmware rollback after OTA updates. Use Value: Industrial-grade operating range and 4.5V–5.5V supply tolerance ensure reliable operation during battery voltage sag; chip erase (70 ms) enables rapid recovery from corrupted images. |
Use Scenario: Storing backup firmware images and configuration snapshots in enterprise switches and routers for zero-downtime upgrades. IC Role / Device Role / Timing Role: Parallel-accessed shadow memory used during hot-swap firmware validation before activation. Use Value: 512K × 8 density provides sufficient space for dual-image storage; byte-program capability allows incremental patch application without full reload. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT49BV040A-70TI | 4-Mbit, 70 ns, 3.0V–3.6V supply - requires separate 3.3V rail and level translation for 5V systems | Limited to low-voltage embedded designs; lacks hardware VDD detection for write inhibit | Select only if system already uses 3.3V logic and needs lower active current (8 mA vs. 10 mA) |
| MX29LV040CTT-70G | 4-Mbit, 70 ns, 3.0V–3.6V supply with 5V tolerant I/O - supports mixed-voltage interfacing but higher standby current (10 µA vs. 30 µA) | Better suited for battery-backed systems needing ultra-low sleep power; no sector-erase granularity (64K blocks only) | Prefer when migrating legacy 5V designs to 3.3V core with backward-compatible I/O, not for pure 5V systems |
Compared with AT49BV040A-70TI and MX29LV040CTT-70G, the SST39SF040-70-4C-NHE-T uniquely delivers 4.5V–5.5V native operation, true 4-Kbyte sector erase, and SuperFlash® timing stability - making it optimal for cost-sensitive, 5V industrial and automotive platforms requiring long-life field updates.
Availability
SST39SF040-70-4C-NHE-T is available at Aetrix Electronics and suitable for industrial PLCs, medical diagnostics, automotive ECUs, and networking equipment requiring stable component supply, long-lifecycle support, and RoHS-compliant Flash memory.
Supply support for SST39SF040-70-4C-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 microcontroller, analog, FPGA, and memory solutions, with a focus on embedded control and connectivity.
The SST39SF040-70-4C-NHE-T belongs to Microchip's SST39SFx series of Multi-Purpose Flash devices, designed specifically for cost-effective, high-reliability firmware and configuration storage in 5V microcontroller-based systems.
FAQ
What is the memory organization of the SST39SF040-70-4C-NHE-T?
The SST39SF040-70-4C-NHE-T is organized as 512K × 8, delivering 4 Mbit (512 KB) of byte-addressable nonvolatile storage. This structure supports direct mapping to 8-bit microcontroller data buses and enables efficient firmware partitioning across 128 uniform 4-Kbyte sectors - a key attribute of the SST39SF040-70-4C-NHE-T for modular updates.
Does the SST39SF040-70-4C-NHE-T require an external VPP voltage for programming?
No, the SST39SF040-70-4C-NHE-T integrates internal VPP generation and performs all program and erase operations using only the standard 4.5V–5.5V VDD supply. This eliminates external charge pumps or high-voltage generators, simplifying board design and reducing BOM cost - a defining feature of the SST39SF040-70-4C-NHE-T.
How does the SST39SF040-70-4C-NHE-T indicate completion of a byte program operation?
The SST39SF040-70-4C-NHE-T provides two hardware-supported methods: Data# Polling (monitoring DQ7 for true data return) and Toggle Bit (observing toggling on DQ6 until it stabilizes). Both are valid after the rising edge of the fourth WE# or CE# pulse and allow the host to detect completion asynchronously - a core timing behavior of the SST39SF040-70-4C-NHE-T.
What package type is used for the SST39SF040-70-4C-NHE-T?
The SST39SF040-70-4C-NHE-T is supplied in a 32-lead TSOP (Thin Small Outline Package) with standard JEDEC x8 Flash pinout. This surface-mount package supports automated assembly, offers thermal performance suitable for industrial ambient temperatures, and maintains pin compatibility with other 32-pin parallel Flash devices - consistent with the SST39SF040-70-4C-NHE-T marking "NHE".
Is the SST39SF040-70-4C-NHE-T RoHS compliant?
Yes, the SST39SF040-70-4C-NHE-T is fully RoHS compliant per Microchip's documentation (DS20005022F, page 1). It contains no lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls (PBB), or polybrominated diphenyl ethers (PBDE), meeting EU Directive 2011/65/EU - a certified environmental attribute of the SST39SF040-70-4C-NHE-T.
SST39SF040-70-4C-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:
- 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:
- Surface Mount
- Supplier Device Package:
- 32-PLCC (11.43x13.97)
SST39SF040-70-4C-NHE-T FAQ
1.How can I place an order for SST39SF040-70-4C-NHE-T through Aetrix?
Please submit a Request for Quotation (RFQ) for SST39SF040-70-4C-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 SST39SF040-70-4C-NHE-T reliable?
The price and inventory of SST39SF040-70-4C-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 SST39SF040-70-4C-NHE-T is usually 5 days.
3.What payment methods are accepted for SST39SF040-70-4C-NHE-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST39SF040-70-4C-NHE-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST39SF040-70-4C-NHE-T?
SST39SF040-70-4C-NHE-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST39SF040-70-4C-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 SST39SF040-70-4C-NHE-T?
For technical support, including SST39SF040-70-4C-NHE-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST39SF040-70-4C-NHE-T requirements.
6.How does Aetrix verify that SST39SF040-70-4C-NHE-T is sourced from the original manufacturer or authorized distributors?
All SST39SF040-70-4C-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 SST39SF040-70-4C-NHE-T meets industry standards.
7.What is the process for return or replacement of SST39SF040-70-4C-NHE-T?
All SST39SF040-70-4C-NHE-T units undergo pre-shipment inspection (PSI). If there is an issue with SST39SF040-70-4C-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 SST39SF040-70-4C-NHE-T part is unused and in its original packaging.
Return procedure for SST39SF040-70-4C-NHE-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SST39SF040-70-4C-NHE-T Tags
-
M24C02-WMN6TP
STMicroelectronics
-
AT24C02C-XHM-T
Microchip Technology
-
AT21CS01-STUM10-T
Microchip Technology
-
AT24C02C-SSHM-T
Microchip Technology
-
24LC01BT-I/OT
Microchip Technology
-
M24C02-FMC6TG
STMicroelectronics
-
AT24CS02-SSHM-T
Microchip Technology
-
93LC46BT-I/OT
Microchip Technology
-
AT24C04C-SSHM-T
Microchip Technology
-
24LC01BT-I/SN
Microchip Technology
-
24AA02UIDT-I/OT
Microchip Technology
-
AT24C08C-STUM-T
Microchip Technology
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
