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

Microchip Technology SST39WF1602-90-4I-B3KE

Name: SST39WF1602-90-4I-B3KE
Brand: Microchip Technology
SKU: SST39WF1602-90-4I-B3KE
Price: 2.40 USD
Availability: InStock
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Part No.:: SST39WF1602-90-4I-B3KE

Manufacturer:: Microchip Technology

Category:: Memory

Package:: 48-TFBGA

Datasheet:: SST39WF1602-90-4I-B3KE.pdf

Description:: IC FLASH 16MBIT PARALLEL 48TFBGA

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Product details

Overview

SST39WF1602-90-4I-B3KE from Silicon Storage Technology is a 16 Mbit (1M × 16) Multi-Purpose Flash Plus (MPF+) memory IC designed for embedded program/data storage in low-voltage systems. It operates from 1.65–1.95 V, delivers 90 ns read access time, supports hardware top-block protection (32 KWord), and features sector/block/chip erase with erase-suspend/resume - enabling reliable firmware updates in industrial controllers and network boot loaders.

For engineers reviewing the SST39WF1602-90-4I-B3KE datasheet, SST39WF1602-90-4I-B3KE pinout, SST39WF1602-90-4I-B3KE application, or SST39WF1602-90-4I-B3KE equivalent, this page provides verified functional identity, JEDEC-compliant x16 interface timing, SuperFlash reliability metrics (100k cycles, >100-year retention), and validated alternative flash parts for migration or second-sourcing.

Technical Context

The SST39WF1602-90-4I-B3KE implements a CMOS SuperFlash split-gate cell architecture with thick-oxide tunneling injector, delivering fixed erase/program times independent of cycle count - eliminating software de-rating required by conventional NOR flash. Its command-set follows JEDEC standard pin assignments and supports both SST-specific and general CFI Query modes for system identification.

It integrates hardware block protection via WP# pin (top 32 KWord protected when grounded), RST# for hard reset to read mode, and dual status detection (DQ7 Data# Polling and DQ6/DQ2 Toggle Bits) for precise end-of-write monitoring during word-program, sector-erase, block-erase, or chip-erase operations.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory Density	16 Mbit (1,048,576 × 16-bit words) - supports full firmware images or configuration tables in space-constrained designs.
Supply Voltage	1.65–1.95 V - enables direct integration into 1.8 V logic domains without level-shifting.
Read Access Time	90 ns - meets timing requirements for 10 MHz bus interfaces with adequate setup/hold margins.
Endurance	100,000 program/erase cycles (typical) - sufficient for field-upgradable firmware with infrequent reprogramming.
Data Retention	>100 years - ensures long-term data integrity in unpowered storage applications.
Active Current	5 mA at 5 MHz (typical) - minimizes power draw during active read operations in battery-backed or energy-sensitive systems.
Standby Current	5 µA (typical) - enables ultra-low-power sleep states in always-on embedded devices.
Erase/Program Times	Sector-erase: 36 ms; Word-program: 28 µs (typical) - accelerates partial updates versus full-chip rewrites.

Pinout & Package

Package: 48-ball WFBGA (4 mm × 6 mm, B3KE suffix), RoHS-compliant, lead-free.

Pin/Terminal	Circuit Role	Design Meaning
A0–A19	Address Inputs	16-bit address bus (A0–A15) + 4 MSB (A16–A19) for sector/block selection; AMS = A19 per JEDEC CFI geometry table.
DQ0–DQ15	Data I/O	16-bit bidirectional data bus; tri-stated when CE# or OE# high; latched on WE#/CE# edges per command sequence.
CE#	Chip Enable	Active-low device select; must be low for all write operations and valid reads; controls standby entry/exit.
OE#	Output Enable	Active-low output gate; high impedance when asserted high or CE# high - prevents bus contention.
WE#	Write Enable	Controls latching of address/data during write cycles; falling edge latches address, rising edge latches data per JEDEC timing.
WP#	Hardware Write Protect	Grounding protects top 32 KWord boot block (0F8000H–0FFFFFH); floating = internally pulled high = unprotected.
RST#	Reset Input	Hard reset to read mode; terminates in-progress erase/program; requires TRP low pulse and TRHR recovery before next read.
VDD	Power Supply	1.65–1.95 V supply; powers core and I/O; internal VPP generation eliminates external high-voltage requirement.
VSS	Ground	Reference for all signals and power; two dedicated VSS balls ensure stable return path in high-speed operation.
NC	No Connection	Unbonded pins (e.g., ball E1, G1, H1 in WFBGA layout); must remain unconnected on PCB.

Key Features

Feature	Design Value
SuperFlash Technology	Split-gate cell with thick-oxide tunneling injector enables fixed 36 ms erase time regardless of accumulated cycles - removes need for wear-leveling or timeout scaling in firmware.
Erase-Suspend/Resume	Allows real-time read access to non-suspended sectors during erase; enables background update of critical runtime data without halting system operation.
Top Block Protection	Hardware-enforced protection of top 32 KWord (0F8000H–0FFFFFH) via WP# pin - safeguards boot code against accidental overwrite during field updates.
Security ID	256-bit factory/user programmable ID (128-bit SST + 128-bit user); user segment lockable to prevent tampering - supports secure boot authentication and device binding.
Auto Low Power Mode	Reduces active read current from ~9 mA to 5 µA after valid read; exits instantly on address/control transition - cuts dynamic power by >99% during idle polling.
JEDEC CFI Compliance	Supports both SST-specific and general CFI Query modes (via 5555H/98H or 55H/98H); enables OS/driver auto-detection without hardcoded part assumptions.

Applications

Industrial PLC Firmware Storage	Network Router Boot Memory
Use Scenario: Storing and updating ladder logic firmware in programmable logic controllers operating across -40°C to +85°C industrial environments. IC Role / Device Role / Timing Role: Nonvolatile program memory with hardware top-block protection ensuring bootloader integrity during remote firmware upgrades. Use Value: 100,000-cycle endurance and >100-year retention guarantee operational continuity over 15+ year equipment lifecycles without memory replacement.	Use Scenario: Holding boot code and configuration parameters in enterprise-grade routers requiring fast, reliable initialization after power loss. IC Role / Device Role / Timing Role: x16 asynchronous NOR flash providing 90 ns read access to enable sub-100 ms boot sequences from cold start. Use Value: Erase-suspend capability allows simultaneous packet buffering and background firmware validation - no service interruption during security patch deployment.
Medical Device Configuration Storage	Automotive Infotainment System Code Storage
Use Scenario: Retaining calibration data, user preferences, and regulatory compliance logs in portable diagnostic equipment with battery backup. IC Role / Device Role / Timing Role: Low-power (5 µA standby) flash memory interfacing directly to 1.8 V microcontroller buses without voltage translation. Use Value: Auto Low Power mode reduces average current consumption during idle periods - extends battery life in handheld units by up to 40% versus standard flash.	Use Scenario: Hosting infotainment OS kernel and UI assets in automotive head units where vibration, thermal cycling, and EMI resilience are critical. IC Role / Device Role / Timing Role: JEDEC-compliant x16 flash with CFI support enabling plug-and-play compatibility across multiple SoC platforms. Use Value: Top-block protection prevents corruption of safety-critical boot code during OTA updates - meeting ISO 26262 ASIL-B functional safety requirements.

Industrial PLC Firmware Storage

Network Router Boot Memory

Use Scenario: Storing and updating ladder logic firmware in programmable logic controllers operating across -40°C to +85°C industrial environments.

IC Role / Device Role / Timing Role: Nonvolatile program memory with hardware top-block protection ensuring bootloader integrity during remote firmware upgrades.

Use Value: 100,000-cycle endurance and >100-year retention guarantee operational continuity over 15+ year equipment lifecycles without memory replacement.

Use Scenario: Holding boot code and configuration parameters in enterprise-grade routers requiring fast, reliable initialization after power loss.

IC Role / Device Role / Timing Role: x16 asynchronous NOR flash providing 90 ns read access to enable sub-100 ms boot sequences from cold start.

Use Value: Erase-suspend capability allows simultaneous packet buffering and background firmware validation - no service interruption during security patch deployment.

Medical Device Configuration Storage

Automotive Infotainment System Code Storage

Use Scenario: Retaining calibration data, user preferences, and regulatory compliance logs in portable diagnostic equipment with battery backup.

IC Role / Device Role / Timing Role: Low-power (5 µA standby) flash memory interfacing directly to 1.8 V microcontroller buses without voltage translation.

Use Value: Auto Low Power mode reduces average current consumption during idle periods - extends battery life in handheld units by up to 40% versus standard flash.

Use Scenario: Hosting infotainment OS kernel and UI assets in automotive head units where vibration, thermal cycling, and EMI resilience are critical.

IC Role / Device Role / Timing Role: JEDEC-compliant x16 flash with CFI support enabling plug-and-play compatibility across multiple SoC platforms.

Use Value: Top-block protection prevents corruption of safety-critical boot code during OTA updates - meeting ISO 26262 ASIL-B functional safety requirements.

Equivalent & Alternatives

The following parts are listed as comparable options for similar flash memory applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SST39VF1602-90-4I-B3KE	3.0 V supply range (2.7–3.6 V); identical pinout, command set, and density but higher VDD - requires level-shifting if replacing 1.8 V systems.	Targeted at legacy 3.3 V designs; not suitable for direct drop-in replacement in 1.8 V rails without voltage translation.	Select only when migrating from older SST39VF family or when 3.3 V infrastructure is fixed and power efficiency is secondary.
MX29LV160ETTI-90G	3.0 V operation; 16 Mbit x16; supports CFI but lacks erase-suspend and Security ID; 100 ns access vs. 90 ns.	Used in cost-sensitive consumer electronics; lacks top-block protection granularity and secure ID - insufficient for regulated firmware storage.	Consider for non-critical, high-volume applications where security and suspend functionality are unnecessary and 3.3 V supply is available.

Compared with SST39VF1602-90-4I-B3KE and MX29LV160ETTI-90G, the SST39WF1602-90-4I-B3KE uniquely combines 1.8 V operation, top-block hardware protection, erase-suspend, and 256-bit Security ID - making it the only option among the three qualified for safety-critical, low-power, and secure firmware storage.

Availability

SST39WF1602-90-4I-B3KE is available at Aetrix Electronics and suitable for industrial PLC firmware storage, network router boot memory, medical device configuration storage, and automotive infotainment system code storage requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for SST39WF1602-90-4I-B3KE 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

Silicon Storage Technology (SST) was a fabless semiconductor company specializing in high-reliability NOR flash memory, acquired by Microchip Technology in 2010. SST pioneered SuperFlash technology for superior endurance and data retention.

The SST39WF1602 belongs to the Multi-Purpose Flash Plus (MPF+) product line, engineered specifically for low-voltage embedded systems needing robust, secure, and fast firmware storage with minimal power overhead.

FAQ

What is the exact memory organization of the SST39WF1602-90-4I-B3KE?

The SST39WF1602-90-4I-B3KE is organized as 1,048,576 words × 16 bits (1M × 16), totaling 16 Mbit. It features uniform 2 KWord sectors (512 total) and uniform 32 KWord blocks (32 total), with top 32 KWord (0F8000H–0FFFFFH) designated as hardware-protected boot block per Table 2 of the datasheet.

Does the SST39WF1602-90-4I-B3KE support both CFI Query modes?

Yes, the SST39WF1602-90-4I-B3KE supports both SST-specific CFI Query mode (entry via 5555H/98H) and general CFI Query mode (entry via 55H/98H), as confirmed in Section "Common Flash Memory Interface (CFI)" on page 5 of the datasheet. Both modes return identical geometry and interface information per Tables 7–9.

How does hardware block protection work on the SST39WF1602-90-4I-B3KE?

Hardware block protection on the SST39WF1602-90-4I-B3KE is implemented via the WP# pin: grounding WP# protects the top 32 KWord block (0F8000H–0FFFFFH); leaving WP# floating applies an internal pull-up, disabling protection. This mechanism prevents program/erase commands from affecting the protected region, as stated in the "Hardware Block Protection" section on page 4.

What are the valid status detection methods during write operations for the SST39WF1602-90-4I-B3KE?

The SST39WF1602-90-4I-B3KE supports two end-of-write detection methods: Data# Polling (DQ7 toggles until completion, then outputs true data) and Toggle Bit (DQ6 toggles during operation, stops when complete). DQ2 serves as auxiliary toggle bit for erase-suspend verification. These are detailed in Tables 1 and timing diagrams Figures 7–8.

Is the SST39WF1602-90-4I-B3KE compatible with standard JEDEC x16 flash interfaces?

Yes, the SST39WF1602-90-4I-B3KE conforms fully to JEDEC standard pin assignments and command sets for x16 flash memories, as explicitly stated in the "PRODUCT DESCRIPTION" on page 1 and reinforced by its CFI compliance (Table 9 confirms "x16-only asynchronous interface"). No protocol translation is required for JEDEC-compliant hosts.

SST39WF1602-90-4I-B3KE Specifications

Product attributes: Attribute value

Manufacturer:: Microchip Technology

Series:: SST39 MPF™

Package/Case:: 48-TFBGA

Packaging:: Tray

Product Status:: Obsolete

Programmable:: Not Verified

Memory Type:: Non-Volatile

Memory Format:: FLASH

Technology:: FLASH

Memory Size:: 16Mbit

Memory Organization:: 1M x 16

Memory Interface:: Parallel

Clock Frequency:: -

Write Cycle Time - Word, Page:: 40µs

Access Time:: 90 ns

Voltage - Supply:: 1.65V ~ 1.95V

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 48-TFBGA

SST39WF1602-90-4I-B3KE FAQ

1.How can I place an order for SST39WF1602-90-4I-B3KE through Aetrix?

Please submit a Request for Quotation (RFQ) for SST39WF1602-90-4I-B3KE 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 SST39WF1602-90-4I-B3KE reliable?

The price and inventory of SST39WF1602-90-4I-B3KE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SST39WF1602-90-4I-B3KE is usually 5 days.

3.What payment methods are accepted for SST39WF1602-90-4I-B3KE?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST39WF1602-90-4I-B3KE transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SST39WF1602-90-4I-B3KE?

SST39WF1602-90-4I-B3KE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SST39WF1602-90-4I-B3KE 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 SST39WF1602-90-4I-B3KE?

For technical support, including SST39WF1602-90-4I-B3KE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST39WF1602-90-4I-B3KE requirements.

6.How does Aetrix verify that SST39WF1602-90-4I-B3KE is sourced from the original manufacturer or authorized distributors?

All SST39WF1602-90-4I-B3KE 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 SST39WF1602-90-4I-B3KE meets industry standards.

7.What is the process for return or replacement of SST39WF1602-90-4I-B3KE?

All SST39WF1602-90-4I-B3KE units undergo pre-shipment inspection (PSI). If there is an issue with SST39WF1602-90-4I-B3KE, 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 SST39WF1602-90-4I-B3KE part is unused and in its original packaging.

Return procedure for SST39WF1602-90-4I-B3KE:

1.Submit a request within 90 days.

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

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