My Inquiry
My Account
Microchip Technology SST39WF400B-70-4I-MAQE-T
- Part No.:
- SST39WF400B-70-4I-MAQE-T
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-WFBGA
- Datasheet:
-
SST39WF400B-70-4I-MAQE-T.pdf
- Description:
- IC FLASH 4MBIT PARALLEL 48WFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:4,043
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SST39WF400B-70-4I-MAQE-T from Microchip Technology is a 4 Mbit (256K × 16) Multi-Purpose Flash memory IC using SuperFlash technology, operating at 1.65–1.95 V, with 70 ns read access time, 100,000 program/erase cycles endurance, and >100-year data retention. It serves as nonvolatile program/data storage in embedded controllers and firmware update modules.
For engineers reviewing the SST39WF400B-70-4I-MAQE-T datasheet, SST39WF400B-70-4I-MAQE-T pinout, SST39WF400B-70-4I-MAQE-T application, or SST39WF400B-70-4I-MAQE-T equivalent, key selection factors include single-supply 1.65–1.95 V operation, JEDEC-standard x16 asynchronous interface, sector/block/chip-erase flexibility, toggle-bit/data# polling status detection, and 48-ball WFBGA/XFLGA/TFBGA packaging compatibility.
Technical Context
The SST39WF400B-70-4I-MAQE-T implements a split-gate SuperFlash cell architecture with thick-oxide tunneling injector, enabling fixed erase/program times independent of cycle count. It supports standard microprocessor bus timing with CE#, OE#, and WE# control signals and latched address/data paths.
It conforms to JEDEC-standard pinouts and command sets for x16 flash memories, includes CFI query support (SST and general modes), and integrates hardware protections including noise/glitch immunity (<5 ns pulse rejection), VDD power-up/down detection, and write-inhibit mode via OE#/CE#/WE# states.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4 Mbit (256K × 16), directly maps to 512 KB byte-addressable space in x16 configuration |
| Read Access Time | 70 ns - enables direct connection to 14 MHz synchronous buses without wait states |
| Supply Voltage | 1.65–1.95 V - compatible with low-voltage SoC I/O domains and eliminates need for level shifters |
| Endurance | 100,000 cycles (typical) - supports field firmware updates over full product lifecycle |
| Data Retention | >100 years - ensures long-term reliability in unpowered storage applications |
| Erase Granularity | Uniform 2 KWord sectors (4 KB) and 32 KWord blocks (64 KB) - enables fine-grained firmware patching and bulk reprogramming |
| Program Time | 28 µs per word (typical) - reduces total update time vs. legacy flash technologies |
Pinout & Package
Package: 48-ball WFBGA (4 mm × 6 mm), 48-ball XFLGA (4 mm × 6 mm), or 48-ball TFBGA (6 mm × 8 mm); all share identical pinout per JEDEC standard for x16 flash.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A17–A0 | Address Inputs | A17 = AMS (most significant address); A17–A11 select sector; A17–A15 select block |
| DQ15–DQ0 | Data I/O | Bi-directional x16 data bus; tri-stated when CE# or OE# high; latched during program |
| CE# | Chip Enable | Active-low device selection; must be low for read/write; controls internal timing initiation |
| OE# | Output Enable | Active-low output gating; high-Z state when asserted high; used only in read cycles |
| WE# | Write Enable | Active-low control for program/erase command latching; rising edge initiates internal operation |
| VDD | Power Supply | 1.65–1.95 V core supply; powers logic and SuperFlash array; no external VPP required |
| VSS | Ground | Reference for all I/O and core circuitry; two dedicated balls for low-noise return path |
| NC | No Connection | Unbonded pads; must be left floating or tied to VSS per PCB layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| SuperFlash Technology | Split-gate cell with thick-oxide tunneling injector delivers fixed 28 µs program and 36 ms erase times across full lifetime |
| JEDEC x16 Compatibility | Fully compliant pinout and command set enables drop-in replacement for legacy x16 flash in existing designs |
| Multi-Level Erase Control | Independent sector (4 KB), block (64 KB), and chip-erase modes allow optimal update granularity and speed trade-offs |
| Status Detection | DQ6 toggle bit and DQ7 data# polling provide software-controlled, non-blocking write completion detection |
| Hardware Data Protection | Glitch filtering (<5 ns), VDD monitoring (<1.0 V inhibit), and write-inhibit mode prevent spurious writes during power transitions |
Applications
| Industrial PLC Firmware Storage | Medical Device Configuration Memory |
|---|---|
Use Scenario: Storing firmware images and boot code in programmable logic controllers deployed in factory automation environments with wide temperature ranges. IC Role / Device Role / Timing Role: Nonvolatile program memory providing fast 70 ns read access for deterministic boot execution and field-upgradable firmware patches. Use Value: 100,000-cycle endurance and >100-year retention ensure reliable operation over 15+ year equipment lifespans without memory degradation. | Use Scenario: Holding calibration data, user preferences, and safety-critical configuration parameters in portable diagnostic instruments. IC Role / Device Role / Timing Role: Secure, low-power configuration storage interfacing directly to ARM Cortex-M microcontrollers via standard x16 bus. Use Value: Single 1.65–1.95 V supply eliminates level-shifting components; 5 µA standby current extends battery life in handheld devices. |
| Automotive Infotainment Boot ROM | Networking Equipment Image Storage |
Use Scenario: Hosting bootloader and recovery firmware in automotive head units requiring AEC-Q100-compliant components. IC Role / Device Role / Timing Role: Primary boot memory accessed during cold start; supports rapid sector-erase for OTA firmware rollback. Use Value: Industrial-grade (-40°C to +85°C) operation and robust hardware write protection meet automotive functional safety requirements. | Use Scenario: Storing multiple firmware images and FPGA configuration bitstreams in enterprise switches and routers. IC Role / Device Role / Timing Role: Dual-image storage medium enabling fail-safe firmware updates with atomic sector-level swap capability. Use Value: Uniform 4 KB sector erase allows precise image partitioning; CFI query support simplifies auto-detection in multi-vendor BOMs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SST39VF400A-70-4C-EKE-T | 3.0–3.6 V supply range; 70 ns access; same density and pinout; lower endurance (10,000 cycles) | Requires 3.3 V I/O domain; unsuitable for 1.8 V systems; limited rewrite cycles for frequent updates | Select only if legacy 3.3 V design requires pin-compatible upgrade with relaxed endurance needs |
| MX29LV400CTTI-70G | 3.0–3.6 V supply; 70 ns access; 4 Mbit x16; different command set (non-JEDEC CFI) | Lacks CFI query support; requires custom driver adaptation; no toggle-bit polling | Choose only when migrating from Macronix-based platforms where software stack already supports proprietary commands |
Compared with SST39VF400A-70-4C-EKE-T and MX29LV400CTTI-70G, the SST39WF400B-70-4I-MAQE-T uniquely supports 1.65–1.95 V operation, delivers 10× higher endurance, and provides JEDEC-standard CFI and status polling-making it the only option for modern low-voltage, high-reliability embedded firmware storage.
Availability
SST39WF400B-70-4I-MAQE-T is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device configuration memory, and automotive infotainment boot ROM requiring stable component supply across extended temperature and long-lifecycle programs.
Supply support for SST39WF400B-70-4I-MAQE-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 is a global semiconductor company specializing in microcontrollers, analog devices, and memory solutions, with leadership in flash technology through its acquisition of Silicon Storage Technology (SST).
The SST39WF400B-70-4I-MAQE-T belongs to the SuperFlash Multi-Purpose Flash product line, designed specifically for low-voltage, high-reliability embedded firmware and configuration storage in space-constrained, power-sensitive applications.
FAQ
What voltage range does the SST39WF400B-70-4I-MAQE-T require for reliable operation?
The SST39WF400B-70-4I-MAQE-T operates within a strict 1.65–1.95 V supply range for both read and write functions. This single-supply requirement eliminates external voltage translation and aligns with modern low-power SoC I/O domains. Operation outside this window-especially below 1.0 V-triggers hardware write inhibition to prevent corruption. The SST39WF400B-70-4I-MAQE-T datasheet specifies that VDD ramp rates faster than 1 V per 100 ms are required to ensure proper power-up initialization.
How does the SST39WF400B-70-4I-MAQE-T detect completion of program or erase operations?
The SST39WF400B-70-4I-MAQE-T provides two hardware-supported software detection methods: Data# Polling on DQ7 and Toggle Bit on DQ6. During internal operations, DQ7 outputs complemented data until completion, then true data; DQ6 toggles between 0 and 1 until completion, then stabilizes. Both are valid after the fourth (program) or sixth (erase) WE# pulse. The SST39WF400B-70-4I-MAQE-T requires two consecutive consistent reads to confirm completion and avoid spurious results due to asynchronous timing.
What package types are offered for the SST39WF400B-70-4I-MAQE-T, and are they pin-compatible?
The SST39WF400B-70-4I-MAQE-T is available in three 48-ball packages: WFBGA (4 mm × 6 mm), XFLGA (4 mm × 6 mm), and TFBGA (6 mm × 8 mm). All share identical pin assignments per JEDEC standard for x16 flash, making them functionally and electrically interchangeable. The SST39WF400B-70-4I-MAQE-T part number suffix "MAQE-T" specifically denotes the 48-ball WFBGA variant, but pinout, timing, and command behavior are identical across all three packages.
Does the SST39WF400B-70-4I-MAQE-T support Common Flash Interface (CFI) queries?
Yes, the SST39WF400B-70-4I-MAQE-T supports both SST-specific and general CFI Query modes. Entering SST CFI mode requires writing 98H to address 5555H using the standard three-byte unlock sequence; general CFI mode uses a one-byte 98H write to address 55H. Once active, CFI data-including geometry, voltage, and timeout parameters-is readable at defined addresses (e.g., 10H–12H for "QRY" string). The SST39WF400B-70-4I-MAQE-T exits CFI mode via the F0H exit command.
What erase granularities does the SST39WF400B-70-4I-MAQE-T support, and how are they initiated?
The SST39WF400B-70-4I-MAQE-T supports three erase modes: sector (2 KWord = 4 KB), block (32 KWord = 64 KB), and chip-wide. Sector erase uses command 30H with address lines AMS–A11; block erase uses 50H with AMS–A15; chip erase uses 10H at 5555H. All require six-byte command sequences with JEDEC-standard unlock prefixes (5555H/AAH, 2AAAH/55H, etc.). Erase times are uniform: 36 ms typical for sector/block, 140 ms for chip-guaranteed independent of cycle count due to SuperFlash architecture.
SST39WF400B-70-4I-MAQE-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- SST39 MPF™
- Package/Case:
- 48-WFBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH
- Memory Size:
- 4Mbit
- Memory Organization:
- 256K x 16
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 40µs
- Access Time:
- 70 ns
- Voltage - Supply:
- 1.65V ~ 1.95V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-WFBGA (6x4)
SST39WF400B-70-4I-MAQE-T FAQ
1.How can I place an order for SST39WF400B-70-4I-MAQE-T through Aetrix?
Please submit a Request for Quotation (RFQ) for SST39WF400B-70-4I-MAQE-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 SST39WF400B-70-4I-MAQE-T reliable?
The price and inventory of SST39WF400B-70-4I-MAQE-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SST39WF400B-70-4I-MAQE-T is usually 5 days.
3.What payment methods are accepted for SST39WF400B-70-4I-MAQE-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST39WF400B-70-4I-MAQE-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST39WF400B-70-4I-MAQE-T?
SST39WF400B-70-4I-MAQE-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST39WF400B-70-4I-MAQE-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 SST39WF400B-70-4I-MAQE-T?
For technical support, including SST39WF400B-70-4I-MAQE-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST39WF400B-70-4I-MAQE-T requirements.
6.How does Aetrix verify that SST39WF400B-70-4I-MAQE-T is sourced from the original manufacturer or authorized distributors?
All SST39WF400B-70-4I-MAQE-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 SST39WF400B-70-4I-MAQE-T meets industry standards.
7.What is the process for return or replacement of SST39WF400B-70-4I-MAQE-T?
All SST39WF400B-70-4I-MAQE-T units undergo pre-shipment inspection (PSI). If there is an issue with SST39WF400B-70-4I-MAQE-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 SST39WF400B-70-4I-MAQE-T part is unused and in its original packaging.
Return procedure for SST39WF400B-70-4I-MAQE-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SST39WF400B-70-4I-MAQE-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…
