Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Integrated Circuits (ICs) > Memory > Memory

Microchip Technology SST39VF3201B-70-4I-EKE-T

Name: SST39VF3201B-70-4I-EKE-T
Brand: Microchip Technology
SKU: SST39VF3201B-70-4I-EKE-T
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: SST39VF3201B-70-4I-EKE-T

Manufacturer:: Microchip Technology

Category:: Memory

Package:: 48-TFSOP (0.724", 18.40mm Width)

Datasheet:: SST39VF3201B-70-4I-EKE-T.pdf

Description:: IC FLASH 32MBIT PARALLEL 48TSOP

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:728

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

SST39VF3201B-70-4I-EKE-T from Microchip Technology is a 32 Mbit (2M × 16) CMOS Multi-Purpose Flash Plus memory IC with bottom-block hardware write protection, 70 ns read access time, and single 2.7–3.6 V supply operation. It delivers 100,000 program/erase cycles endurance and >100-year data retention, used for firmware storage and configuration in embedded controllers and industrial HMI systems.

For engineers reviewing the SST39VF3201B-70-4I-EKE-T datasheet, SST39VF3201B-70-4I-EKE-T pinout, SST39VF3201B-70-4I-EKE-T application, or SST39VF3201B-70-4I-EKE-T equivalent, this page provides verified pin functions, JEDEC-compliant x16 interface timing, bottom-boot block protection mapping, and direct alternatives for legacy flash replacement in space-constrained TSOP designs.

Technical Context

The SST39VF3201B-70-4I-EKE-T implements SuperFlash technology with split-gate cells and thick-oxide tunneling injectors, enabling fixed erase/program times independent of cycle count. It supports uniform 2 KWord sectors and 32 KWord blocks, with hardware WP# protection applied to the bottom 32 KWord (000000H–007FFFH).

It uses standard JEDEC x16 asynchronous interface timing with CE#, OE#, and WE# control logic, latched address/data buses, and dual status detection via DQ7 (Data# Polling) and DQ6/DQ2 (Toggle Bits). The RST# pin provides hardware reset to Read mode, and CFI query mode enables runtime device identification.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory Density	32 Mbit (2,097,152 × 16-bit words), directly replaces 2M×16 parallel NOR flash in boot code storage.
Read Access Time	70 ns - enables direct execution from flash (XIP) in microcontrollers with ≤14 MHz bus timing.
Supply Voltage	2.7–3.6 V - compatible with 3.3 V system rails without level-shifting; no VPP pin required.
Endurance	100,000 program/erase cycles - supports field firmware updates over 10+ years in industrial logging applications.
Data Retention	>100 years - ensures long-term reliability in unpowered storage for medical device calibration tables.
Block Protection	Bottom 32 KWord (000000H–007FFFH) - safeguards bootloader region against accidental overwrite when WP# = low.
Erase Times	Sector/Block: 18 ms typ.; Chip: 35 ms typ. - enables fast field updates without extended downtime.
Power Consumption	6 mA active (5 MHz), 4 µA standby/auto-low-power - reduces quiescent current in battery-backed systems.

Pinout & Package

Package: 48-lead TSOP (12 mm × 20 mm), RoHS-compliant, lead-free.

Pin/Terminal	Circuit Role	Design Meaning
A0–A20	Address Inputs	A0–A19 select 2M-word locations; A20 (AMS) enables sector/block addressing per JEDEC x16 standard.
DQ0–DQ15	Data I/O	16-bit bidirectional bus; outputs tri-stated when CE# or OE# high; latched during write cycles.
CE#	Chip Enable	Active-low chip select; device enters standby (4 µA) when high; required low for all operations.
OE#	Output Enable	Active-low output gate; controls data bus drive; must be low with CE# for valid read access.
WE#	Write Enable	Active-low write strobe; latches address/data on falling/rising edges per command sequence timing.
WP#	Write Protect	Active-low hardware lock for bottom 32 KWord boot block; internally pulled up if floating.
RST#	Reset	Active-low hardware reset; terminates in-progress erase/program and returns to Read mode within TRP.
VDD / VSS	Power / Ground	Single 2.7–3.6 V supply; no separate VPP required - simplifies power design and PCB layout.
NC	No Connect	Pins marked NC (e.g., pins 3, 12, 25, 47) are unconnected die pads; must remain unconnected on PCB.

Key Features

Feature	Design Value
Erase-Suspend/Resume	Allows read access to non-suspended sectors during erase, enabling real-time status monitoring in safety-critical firmware updates.
Security ID Space	128-bit factory-programmed + 128-word user-programmable ID area - supports secure device authentication and anti-cloning.
Auto Low Power Mode	Reduces active read current from 6 mA to 4 µA after valid access - cuts dynamic power by >99% in polling-based boot loaders.
CFI Query Support	Enables runtime detection of geometry, timing, and command set via standardized 3-byte entry - eliminates hard-coded flash parameters.
Software Data Protection	JEDEC-compliant 3-byte (program) or 6-byte (erase) command sequences prevent spurious writes during power transients.
Toggle Bit & Data# Polling	Dual-status feedback (DQ6/DQ2 toggle + DQ7 polling) allows robust end-of-write detection without timeout dependencies.

Applications

Industrial PLC Firmware Storage	Medical Device Calibration Table Storage
Use Scenario: Storing firmware images and parameter sets in programmable logic controllers deployed in factory automation environments with wide temperature swings. IC Role / Device Role / Timing Role: Nonvolatile boot memory providing XIP-capable 70 ns read access to initialize FPGA configuration and real-time OS kernel. Use Value: Bottom-block protection prevents corruption of bootloader during field firmware upgrades; 100,000-cycle endurance supports 5+ years of scheduled maintenance cycles.	Use Scenario: Holding calibrated sensor coefficients and regulatory audit logs in portable diagnostic equipment requiring FDA-grade data integrity. IC Role / Device Role / Timing Role: Secure configuration memory with factory-programmed Security ID and user-writable calibration space. Use Value: >100-year data retention ensures lifetime validity of calibration data; CFI query enables automatic compatibility verification across production batches.
Automotive Infotainment Bootloader	Network Router Configuration Storage
Use Scenario: Hosting primary bootloader and fail-safe recovery image in automotive head units operating across -40°C to +85°C ambient range. IC Role / Device Role / Timing Role: Industrial-grade (I-temp) parallel NOR flash interfacing directly with ARM Cortex-A application processor's external bus interface. Use Value: Hardware RST# pin enables deterministic recovery from brown-out events; WP#-protected boot block guarantees safe fallback execution path.	Use Scenario: Storing routing tables, VLAN configurations, and firmware patches in enterprise edge routers with frequent remote updates. IC Role / Device Role / Timing Role: High-reliability update memory supporting sector-erase granularity to minimize disruption during partial config reloads. Use Value: 18 ms sector-erase time enables sub-100ms config updates; Erase-Suspend allows concurrent status reads during background erase operations.

Industrial PLC Firmware Storage

Medical Device Calibration Table Storage

Use Scenario: Storing firmware images and parameter sets in programmable logic controllers deployed in factory automation environments with wide temperature swings.

IC Role / Device Role / Timing Role: Nonvolatile boot memory providing XIP-capable 70 ns read access to initialize FPGA configuration and real-time OS kernel.

Use Value: Bottom-block protection prevents corruption of bootloader during field firmware upgrades; 100,000-cycle endurance supports 5+ years of scheduled maintenance cycles.

Use Scenario: Holding calibrated sensor coefficients and regulatory audit logs in portable diagnostic equipment requiring FDA-grade data integrity.

IC Role / Device Role / Timing Role: Secure configuration memory with factory-programmed Security ID and user-writable calibration space.

Use Value: >100-year data retention ensures lifetime validity of calibration data; CFI query enables automatic compatibility verification across production batches.

Automotive Infotainment Bootloader

Network Router Configuration Storage

Use Scenario: Hosting primary bootloader and fail-safe recovery image in automotive head units operating across -40°C to +85°C ambient range.

IC Role / Device Role / Timing Role: Industrial-grade (I-temp) parallel NOR flash interfacing directly with ARM Cortex-A application processor's external bus interface.

Use Value: Hardware RST# pin enables deterministic recovery from brown-out events; WP#-protected boot block guarantees safe fallback execution path.

Use Scenario: Storing routing tables, VLAN configurations, and firmware patches in enterprise edge routers with frequent remote updates.

IC Role / Device Role / Timing Role: High-reliability update memory supporting sector-erase granularity to minimize disruption during partial config reloads.

Use Value: 18 ms sector-erase time enables sub-100ms config updates; Erase-Suspend allows concurrent status reads during background erase operations.

Equivalent & Alternatives

The following parts are listed as comparable options for similar parallel NOR flash applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SST39VF3202B-70-4I-EKE-T	Top 32 KWord hardware block protection (1F8000H–1FFFFFH); identical timing, density, and package.	Used where bootloader resides at top of address space; not interchangeable without PCB-level WP# routing change.	Select only if top-boot architecture matches system memory map; same pinout but opposite protection region.
MX29LV320ETTI-70G	32 Mbit x16, 70 ns, 2.7–3.6 V, but uses different command set (no CFI query) and lacks Erase-Suspend.	Requires modified driver software; no suspend/resume capability limits real-time update flexibility.	Valid drop-in for basic read/write use cases; avoid where firmware update concurrency or security ID features are required.

Compared with SST39VF3201B-70-4I-EKE-T, the SST39VF3202B offers mirrored boot-block protection for top-aligned firmware, while the MX29LV320ETTI sacrifices CFI and Erase-Suspend for broader legacy driver support - making the SST39VF3201B optimal for new designs needing runtime configurability and secure update resilience.

Availability

SST39VF3201B-70-4I-EKE-T is available at Aetrix Electronics and suitable for industrial PLCs, medical diagnostics, automotive infotainment, and network infrastructure requiring stable component supply across extended product lifecycles.

Supply support for SST39VF3201B-70-4I-EKE-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 acquired Silicon Storage Technology (SST) in 2010 and maintains the MPF+ Flash portfolio for high-reliability embedded applications.

The SST39VF3201B belongs to the Multi-Purpose Flash Plus family, designed specifically for cost-sensitive, space-constrained systems needing robust firmware storage with hardware-level boot protection and low-voltage operation.

FAQ

What is the exact memory organization of the SST39VF3201B-70-4I-EKE-T?

The SST39VF3201B-70-4I-EKE-T is organized as 2,097,152 words × 16 bits (32 Mbit total), with uniform 2 KWord sectors (1024 sectors) and 32 KWord blocks (64 blocks). Its bottom 32 KWord (000000H–007FFFH) is hardware-protected when WP# is asserted low. This structure is confirmed in Tables 3 and 9 of the DS25111A datasheet and applies specifically to the SST39VF3201B-70-4I-EKE-T variant.

Does the SST39VF3201B-70-4I-EKE-T support CFI query mode, and how is it entered?

Yes, the SST39VF3201B-70-4I-EKE-T supports Common Flash Interface (CFI) query mode to dynamically identify device geometry and timing. It is entered by writing 98H to address 555H using the three-byte sequence (555H/AAH → 2AAH/55H → 555H/98H) or the one-byte method (55H address, 98H data). CFI data is readable at defined offsets per Table 7, and the SST39VF3201B-70-4I-EKE-T exits CFI mode via the F0H exit command.

How does hardware block protection work on the SST39VF3201B-70-4I-EKE-T?

Hardware block protection on the SST39VF3201B-70-4I-EKE-T is implemented via the WP# pin and applies exclusively to the bottom 32 KWord boot block (000000H–007FFFH). When WP# is driven low, program and erase operations to this region are inhibited. If WP# is left floating, an internal pull-up holds it high, disabling protection. This behavior is specific to the SST39VF3201B variant and differs from the top-protection of SST39VF3202B.

What are the valid operating temperature and voltage ranges for the SST39VF3201B-70-4I-EKE-T?

The SST39VF3201B-70-4I-EKE-T is rated for industrial temperature range (-40°C to +85°C) and operates from a single 2.7 V to 3.6 V supply. These specifications are defined in Table 10 of DS25111A and apply to all functional modes including read, program, and erase. The "I" in the part number explicitly denotes industrial temperature grade, and the device requires no external VPP voltage.

Can the SST39VF3201B-70-4I-EKE-T be used in place of the SST39VF3201B-70-4C-EKE-T?

No - the SST39VF3201B-70-4I-EKE-T and SST39VF3201B-70-4C-EKE-T differ in temperature grade: "I" denotes industrial (-40°C to +85°C), while "C" denotes commercial (0°C to +70°C). All electrical, timing, and functional specifications are identical, but the SST39VF3201B-70-4I-EKE-T is qualified for extended thermal operation and undergoes additional screening. Substitution requires validation of thermal margins in the target application.

SST39VF3201B-70-4I-EKE-T Specifications

Product attributes: Attribute value

Manufacturer:: Microchip Technology

Series:: SST39 MPF™

Package/Case:: 48-TFSOP (0.724", 18.40mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Active

Programmable:: Not Verified

Memory Type:: Non-Volatile

Memory Format:: FLASH

Technology:: FLASH

Memory Size:: 32Mbit

Memory Organization:: 2M x 16

Memory Interface:: Parallel

Clock Frequency:: -

Write Cycle Time - Word, Page:: 10µs

Access Time:: 70 ns

Voltage - Supply:: 2.7V ~ 3.6V

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 48-TSOP

SST39VF3201B-70-4I-EKE-T FAQ

1.How can I place an order for SST39VF3201B-70-4I-EKE-T through Aetrix?

Please submit a Request for Quotation (RFQ) for SST39VF3201B-70-4I-EKE-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 SST39VF3201B-70-4I-EKE-T reliable?

The price and inventory of SST39VF3201B-70-4I-EKE-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SST39VF3201B-70-4I-EKE-T is usually 5 days.

3.What payment methods are accepted for SST39VF3201B-70-4I-EKE-T?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST39VF3201B-70-4I-EKE-T transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SST39VF3201B-70-4I-EKE-T?

SST39VF3201B-70-4I-EKE-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SST39VF3201B-70-4I-EKE-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 SST39VF3201B-70-4I-EKE-T?

For technical support, including SST39VF3201B-70-4I-EKE-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST39VF3201B-70-4I-EKE-T requirements.

6.How does Aetrix verify that SST39VF3201B-70-4I-EKE-T is sourced from the original manufacturer or authorized distributors?

All SST39VF3201B-70-4I-EKE-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 SST39VF3201B-70-4I-EKE-T meets industry standards.

7.What is the process for return or replacement of SST39VF3201B-70-4I-EKE-T?

All SST39VF3201B-70-4I-EKE-T units undergo pre-shipment inspection (PSI). If there is an issue with SST39VF3201B-70-4I-EKE-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 SST39VF3201B-70-4I-EKE-T part is unused and in its original packaging.

Return procedure for SST39VF3201B-70-4I-EKE-T:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

Tech Hub

2026-09-07 TTL vs CMOS Logic Levels: 74HC and 74HCT Compatibility Explained

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.

2026-09-04 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

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.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

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…

2026-09-02 74HC595 Pinout, Timing, Output Current, and Applications

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…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

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…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

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 …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

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…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

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…

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

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…

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

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…