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Microchip Technology SST38VF6403B-70-5I-EKE-T
- Part No.:
- SST38VF6403B-70-5I-EKE-T
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
SST38VF6403B-70-5I-EKE-T.pdf
- Description:
- IC FLASH 64MBIT PARALLEL 48TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,074
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Product details
Overview
SST38VF6403B-70-5I-EKE-T from Microchip Technology is a 64 Mbit (4M × 16) Advanced Multi-Purpose Flash Plus memory IC designed for embedded code storage and firmware update applications. It operates from a single 2.7–3.6 V supply, delivers 70 ns read access time, supports 16-word write buffering, and features hardware boot block protection with 4 KWord granularity in the top boot sector. It is used in industrial controllers requiring field-upgradable firmware with high reliability.
For engineers reviewing the SST38VF6403B-70-5I-EKE-T datasheet, SST38VF6403B-70-5I-EKE-T pinout, SST38VF6403B-70-5I-EKE-T application, or SST38VF6403B-70-5I-EKE-T equivalent, key selection criteria include boot-block architecture (non-uniform 4K/32K), RY/BY# status signaling, 128-bit unique ID, Erase-Suspend capability, and TSOP-48/TBGA-48 package compatibility for space-constrained PCB layouts.
Technical Context
The SST38VF6403B-70-5I-EKE-T implements a split-gate SuperFlash cell architecture enabling fixed erase/program times independent of cycle count, delivering consistent 18 ms block-erase and 7 µs word-program performance across its full endurance life. Its command-set conforms to JEDEC-standard x16 flash pinouts and CFI, supporting standard microprocessor bus interfacing without glue logic.
It integrates dual-status detection (DQ6 toggle bit + DQ7 data# polling), hardware reset (RST#), write protect (WP#), and Ready/Busy (RY/BY#) signaling for robust system-level control. The device supports Page Read (25 ns/page, 8-word buffer) and Write-Buffer Programming (1.75 µs/word effective) to accelerate firmware load and configuration updates.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 64 Mbit (4M × 16 organization), enabling 8 MB of firmware or configuration storage |
| Read Access Time | 70 ns - determines maximum synchronous bus clock rate in legacy parallel interface systems |
| Page Read Speed | 25 ns per word (8-word page) - reduces average latency for sequential instruction fetch |
| Block Erase Time | 18 ms typical - enables fast field firmware patching without long downtime |
| Endurance | 100,000 program/erase cycles - supports frequent OTA updates over 10+ years of operation |
| Data Retention | >100 years - ensures firmware integrity in unpowered storage for industrial backup modules |
| Supply Voltage | 2.7–3.6 V - compatible with 3.3 V logic rails and brown-out tolerant power domains |
| Unique ID | 128-bit factory-programmed serial number - enables secure device authentication and license binding |
Pinout & Package
Package: 48-lead TSOP (Thin Small Outline Package), RoHS-compliant, lead-free, standard JEDEC MO-141AC footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A21 | Address Inputs | 22-bit address bus supporting full 4M-word addressing; A21–A15 select block during erase |
| DQ0–DQ15 | Data I/O | 16-bit bidirectional data bus with latched inputs and tri-state outputs controlled by OE#/CE# |
| CE# | Chip Enable | Active-low chip select; device enters standby (5 µA) when high |
| OE# | Output Enable | Active-low output gate; controls data bus tristate independently of CE# |
| WE# | Write Enable | Controls latching of address/data during program/erase command sequences |
| WP# | Write Protect | Hardware lock for top boot block (B0–B1, 4 KWord each); grounded = protected |
| RST# | Reset | Hardware reset input; forces device into Read mode on falling edge |
| RY/BY# | Ready/Busy | Open-drain status indicator: low = active program/erase, high = ready |
| VDD | Power Supply | +2.7–3.6 V core and I/O supply; internal charge pump generates VPP for programming |
| VSS | Ground | Primary reference for all signals and internal circuitry |
| NC | No Connect | Unbonded pin; must be left floating or tied to VSS per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Non-uniform boot block | Top 8 KWord (B0–B1, 4 KWord each) with dedicated VPB/NVPB for granular firmware protection |
| Erase-Suspend/-Resume | Allows real-time read/program of non-erasing blocks during background 18 ms block erase |
| 16-word write buffer | Reduces effective programming time to 1.75 µs/word for burst firmware writes |
| Auto Low Power mode | Automatically enters 5 µA standby after valid read, eliminating software power management overhead |
| Security-ID OTP area | 248-word one-time-programmable region for cryptographic keys or calibration data |
| CFI compliance | Enables automatic parameter discovery and vendor-agnostic flash driver integration |
Applications
| Industrial PLC Firmware Storage | Medical Device Boot Code |
|---|---|
Use Scenario: Storing upgradable ladder logic and HMI assets in DIN-rail mounted programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile code storage with hardware boot block protection preventing corruption during power loss during update. Use Value: 100,000-cycle endurance and >100-year retention ensure firmware integrity across 15+ year product lifecycles without recalibration. |
Use Scenario: Holding certified bootloader and safety-critical initialization routines in FDA-regulated diagnostic imaging equipment. IC Role / Device Role / Timing Role: Secure, tamper-resistant boot memory with 128-bit unique ID for device attestation and traceability. Use Value: WP#-enabled top-boot protection prevents unauthorized modification of regulatory-approved startup code. |
| Telecom Base Station Configuration | Automotive Infotainment Update Cache |
Use Scenario: Storing field-configurable RF calibration tables and protocol stacks in 4G/5G small cell radios. IC Role / Device Role / Timing Role: High-speed parallel interface flash supporting rapid reconfiguration via Page Read (25 ns) and Write Buffer. Use Value: 16-word write buffer cuts OTA configuration write time by >85% vs. single-word programming, minimizing service window. |
Use Scenario: Caching downloaded infotainment OS patches before atomic flash update in automotive head units. IC Role / Device Role / Timing Role: Dual-status monitoring (RY/BY# + DQ6/DQ7) enables safe, interruptible update sequencing under vehicle power constraints. Use Value: Erase-Suspend allows background cache programming while foreground UI remains responsive during ignition cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar parallel NOR flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SST39VF6401B-70-5I-EKE-T | Uniform 32 KWord block architecture; no 4 KWord boot sub-blocks; lacks NVPB/VPB per 4K segment | Suitable for generic code storage where boot granularity is unnecessary; not compliant with SST38VF6403B's non-uniform boot map | Select only if boot block flexibility is not required and legacy uniform erase behavior is preferred |
| MX29LV640ETTI-70G | Same density and 70 ns speed, but uses different command set (AMD/Fujitsu); no Erase-Suspend; no 128-bit UID | Requires modified flash driver; lacks suspend/resume for real-time systems; no hardware-based device identity | Choose when migrating from existing MX29LV designs; avoid when security or concurrent operation is critical |
Compared with SST38VF6403B-70-5I-EKE-T, SST39VF6401B offers simpler uniform erase but forfeits boot-sector flexibility, while MX29LV640ETTI provides pin-compatible replacement at the cost of losing Erase-Suspend and unique ID-making SST38VF6403B-70-5I-EKE-T optimal for safety-critical, upgradable embedded systems demanding both reliability and runtime concurrency.
Availability
SST38VF6403B-70-5I-EKE-T is available at Aetrix Electronics and suitable for industrial PLCs, medical diagnostic devices, telecom base stations, and automotive infotainment systems requiring stable component supply across extended product lifecycles.
Supply support for SST38VF6403B-70-5I-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 is a global semiconductor company specializing in microcontrollers, analog devices, and memory solutions, with leadership in reliable, long-lifecycle embedded components.
The SST38VF6403B belongs to Microchip's Advanced Multi-Purpose Flash Plus (MPF+) family, engineered for high-reliability firmware storage in industrial, medical, and communications equipment where field upgradability and data integrity are mandatory.
FAQ
What is the boot block configuration of the SST38VF6403B-70-5I-EKE-T?
The SST38VF6403B-70-5I-EKE-T implements a non-uniform boot block architecture: the top 8 KWord consists of two 4 KWord sub-blocks (B0 and B1), each with independent Volatile and Non-Volatile Block Protection (VPB/NVPB). This enables fine-grained protection of bootloader and recovery code while leaving adjacent 32 KWord blocks freely erasable. Unlike uniform-boot variants, this structure is defined in Table 3 of DS25002A and is intrinsic to the SST38VF6403B-70-5I-EKE-T part number.
Does the SST38VF6403B-70-5I-EKE-T support Erase-Suspend functionality?
Yes, the SST38VF6403B-70-5I-EKE-T fully supports Erase-Suspend and Erase-Resume commands (B0H and 30H). During an active Block-Erase, issuing Erase-Suspend halts the operation within 20 µs, allowing reads or writes to any non-erasing block. Resume requires the 30H command and mandates ≥200 µs hold time before subsequent suspend. This capability is confirmed in Section 11 of DS25002A and is implemented in silicon for the SST38VF6403B-70-5I-EKE-T.
What package types are offered for the SST38VF6403B-70-5I-EKE-T?
The SST38VF6403B-70-5I-EKE-T is supplied in a 48-lead TSOP (Thin Small Outline Package) with standard JEDEC MO-141AC footprint, as shown in Figure 2 of DS25002A. The "-EKE-T" suffix explicitly denotes the TSOP-48 RoHS-compliant variant. While the SST38VF6403B family also offers a 48-ball TFBGA option, the SST38VF6403B-70-5I-EKE-T part number maps exclusively to the TSOP package per Microchip's ordering guide.
How does the Write-Buffer Programming feature improve throughput in the SST38VF6403B-70-5I-EKE-T?
The SST38VF6403B-70-5I-EKE-T's 16-word write buffer reduces effective programming time to 1.75 µs per word versus 7 µs for single-word writes. By loading up to 16 words via Write-to-Buffer command then committing them atomically with Program Buffer-to-Flash, burst firmware updates achieve >4× speedup. This is validated in DS25002A Section 10 and applies identically to the SST38VF6403B-70-5I-EKE-T in TSOP-48 packaging.
Is the 128-bit Unique ID accessible and programmable on the SST38VF6403B-70-5I-EKE-T?
Yes, the SST38VF6403B-70-5I-EKE-T includes a factory-programmed, read-only 128-bit Unique ID accessible via standard command sequence (AAH on address 0000H). It cannot be altered in the field and serves as a permanent hardware fingerprint for secure boot, licensing, or traceability. This feature is documented in the "Features" section and Table 1 of DS25002A and is guaranteed for every unit of SST38VF6403B-70-5I-EKE-T.
SST38VF6403B-70-5I-EKE-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- SST38
- Package/Case:
- 48-TFSOP (0.724", 18.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH
- Memory Size:
- 64Mbit
- Memory Organization:
- 4M 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
SST38VF6403B-70-5I-EKE-T FAQ
1.How can I place an order for SST38VF6403B-70-5I-EKE-T through Aetrix?
Please submit a Request for Quotation (RFQ) for SST38VF6403B-70-5I-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 SST38VF6403B-70-5I-EKE-T reliable?
The price and inventory of SST38VF6403B-70-5I-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 SST38VF6403B-70-5I-EKE-T is usually 5 days.
3.What payment methods are accepted for SST38VF6403B-70-5I-EKE-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST38VF6403B-70-5I-EKE-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST38VF6403B-70-5I-EKE-T?
SST38VF6403B-70-5I-EKE-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST38VF6403B-70-5I-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 SST38VF6403B-70-5I-EKE-T?
For technical support, including SST38VF6403B-70-5I-EKE-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST38VF6403B-70-5I-EKE-T requirements.
6.How does Aetrix verify that SST38VF6403B-70-5I-EKE-T is sourced from the original manufacturer or authorized distributors?
All SST38VF6403B-70-5I-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 SST38VF6403B-70-5I-EKE-T meets industry standards.
7.What is the process for return or replacement of SST38VF6403B-70-5I-EKE-T?
All SST38VF6403B-70-5I-EKE-T units undergo pre-shipment inspection (PSI). If there is an issue with SST38VF6403B-70-5I-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 SST38VF6403B-70-5I-EKE-T part is unused and in its original packaging.
Return procedure for SST38VF6403B-70-5I-EKE-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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