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Infineon Technologies S29AS008J70TFI040
- Part No.:
- S29AS008J70TFI040
- Manufacturer:
- Infineon Technologies
- Category:
- Memory
- Package:
- 48-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
S29AS008J70TFI040.pdf
- Description:
- IC FLASH 8MBIT PARALLEL 48TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,896
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Product details
Overview
S29AS008J70TFI040 from Infineon Technologies (formerly Cypress) is an 8 Mbit, 1.8 V-only boot sector Flash memory organized as 1M × 8-bit or 512K × 16-bit, featuring top/bottom configurable boot blocks, 70 ns access time, and industrial temperature range (–40°C to +85°C). It supports in-system programming/erasure with single 1.8 V supply, CFI compliance, and hardware write protection for boot sectors - deployed in embedded firmware storage for industrial controllers and automotive ECUs.
For engineers reviewing the S29AS008J70TFI040 datasheet, S29AS008J70TFI040 pinout, S29AS008J70TFI040 application, or S29AS008J70TFI040 equivalent, key selection criteria include boot sector architecture flexibility, 1.65–1.95 V operating voltage tolerance, RY/BY# and RESET# hardware control signals, Secured Silicon Sector with factory-programmable 256-byte serial ID, and JEDEC-compliant command set compatibility.
Technical Context
The S29AS008J70TFI040 implements a sector-erase Flash architecture with eight 8 KB + fifteen 64 KB byte-mode sectors (or eight 4 Kword + fifteen 32 Kword word-mode sectors), enabling selective reprogramming without disturbing adjacent code. Its internal state machine executes Embedded Program and Embedded Erase algorithms, automatically managing pulse widths, pre-programming, and margin verification.
Hardware features include dedicated RY/BY# for cycle completion detection, RESET# for immediate operation termination and array read recovery, WP# for permanent boot-sector lock regardless of software protection status, and BYTE# for dynamic x8/x16 bus width selection. The device uses Fowler-Nordheim tunneling for erase and hot electron injection for program operations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 8 Mbit (1,048,576 × 8 or 524,288 × 16), enabling full boot firmware storage for mid-tier microcontrollers. |
| Access Time | 70 ns max (tACC), supporting zero-wait-state interface with 14 MHz+ CPU buses. |
| Supply Voltage | 1.65–1.95 V VCC, allowing direct integration with 1.8 V logic domains and battery-powered systems. |
| Erase/Program Endurance | 1,000,000 cycles per sector, ensuring long-term field reliability for firmware update partitions. |
| Data Retention | 20 years typical at +85°C, meeting industrial lifecycle requirements for unattended equipment. |
| Operating Temperature | –40°C to +85°C industrial grade, qualified for under-hood and factory-floor deployment. |
| Power Consumption | 8 µA standby / 15 µA automatic sleep current, minimizing quiescent drain in always-on systems. |
Pinout & Package
Package: 48-ball FBGA (VBK048, 8.15 mm × 6.15 mm) and 48-pin TSOP (TS 048); both RoHS-compliant and lead-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A18 | Address inputs | 19-bit address bus supporting full 1M-byte or 512K-word addressing space. |
| DQ0–DQ14 | Data I/O (x8 mode) | 8-bit parallel data path; DQ0–DQ7 active in byte mode, DQ15/A-1 used as LSB address A-1. |
| DQ15/A-1 | Data I/O or address input | Provides x16 data (DQ15–DQ0) in word mode; serves as A-1 (LSB) in byte mode for 1M×8 configuration. |
| CE#, OE#, WE# | Chip, output, write enable controls | Independent gating enables bus contention avoidance and precise timing control per JEDEC standard. |
| RY/BY# | Ready/Busy output | Active-low open-drain signal indicating ongoing program/erase; eliminates need for polling overhead. |
| RESET# | Hardware reset input | Asynchronous reset terminates all operations and forces return to read mode - critical for safe boot recovery. |
| WP# | Write protect input | Hardware lock for two outermost boot sectors, independent of software sector group protection status. |
| BYTE# | Bus width select | Configures device for x8 (BYTE# = low) or x16 (BYTE# = high) operation without external logic. |
Key Features
| Feature | Design Value |
|---|---|
| Secured Silicon Sector | 256-byte factory- or customer-programmable region with 16-byte electronic serial number, enabling secure device identity binding. |
| Erase Suspend/Resume | Allows temporary halt of sector erase to read/program non-erasing sectors - enabling true background firmware updates. |
| Unlock Bypass Programming | Reduces multi-byte programming sequence from four to two write cycles, cutting total firmware patch time by ~50%. |
| CFI Compliance | Standardized register map provides host software with vendor-, density-, and geometry-independent device identification. |
| Automatic Sleep Mode | Enters ultra-low-power state after address stability timeout, reducing idle current to 15 µA without software intervention. |
Applications
| Industrial PLC Firmware Storage | Automotive Body Control Module (BCM) |
|---|---|
|
Use Scenario: Storing boot code and parameter tables in programmable logic controllers requiring field-upgradable firmware with tamper-resistant identity. IC Role / Device Role / Timing Role: Non-volatile boot memory with hardware-protected boot sectors and Secured Silicon Sector for unique device fingerprinting. Use Value: Enables secure over-the-air (OTA) updates while preventing unauthorized firmware replacement via WP# and sector group lock. |
Use Scenario: Holding calibration data and low-level driver code in BCMs exposed to wide temperature swings and EMI-rich vehicle environments. IC Role / Device Role / Timing Role: 1.8 V Flash memory with –40°C to +85°C operation and 70 ns access, synchronized to CAN/FlexRay controller boot timing. Use Value: Guarantees deterministic boot latency and 20-year data retention under thermal cycling, eliminating EEPROM wear-out concerns. |
| Medical Diagnostic Equipment Boot Loader | Smart Energy Meter Firmware |
|
Use Scenario: Hosting certified bootloader and safety-critical initialization routines in FDA-regulated imaging devices requiring audit-trail firmware integrity. IC Role / Device Role / Timing Role: CFI-compliant Flash with Erase Suspend capability, allowing runtime diagnostics to interrupt firmware updates without corruption. Use Value: Supports IEC 62304-compliant update workflows by enabling verified partial reprogramming while preserving validated boot code. |
Use Scenario: Storing metrology firmware and tariff tables in utility-grade meters subject to 15+ year service life and remote firmware upgrades. IC Role / Device Role / Timing Role: High-endurance (1M-cycle) boot sector Flash with hardware RESET# for fail-safe recovery after brownout events. Use Value: Eliminates need for external supervisory ICs by integrating power-fail detection, reset coordination, and protected boot code in one device. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boot sector Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| S29GL032N90TFI020 | 32 Mbit density, 90 ns access, 3.0 V supply; no Secured Silicon Sector or Unlock Bypass mode. | Requires level-shifting for 1.8 V systems; lacks electronic serial number for device authentication. | Select when higher density and legacy 3 V infrastructure outweigh need for secure identity and low-voltage operation. |
| MX29LV008CTTI-70G | 8 Mbit, 70 ns, 3.0 V; JEDEC-compatible but no CFI support, no Erase Suspend, no automatic sleep mode. | Higher standby current (30 µA vs. 8 µA); no hardware RESET# - relies on software reset sequences. | Choose only for cost-sensitive, non-upgradeable designs where power efficiency and background erase are not required. |
Compared with S29GL032N90TFI020 and MX29LV008CTTI-70G, the S29AS008J70TFI040 uniquely combines 1.8 V operation, Secured Silicon Sector, and Erase Suspend - making it the only option for secure, low-power, field-upgradable boot memory in space-constrained industrial and automotive platforms.
Availability
S29AS008J70TFI040 is available at Aetrix Electronics and suitable for industrial PLC firmware storage, automotive body control modules, medical diagnostic boot loaders, and smart energy meter firmware requiring stable component supply across extended product lifecycles.
Supply support for S29AS008J70TFI040 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
Infineon Technologies acquired Cypress Semiconductor in 2020 and now owns, manufactures, and supports the S29AS008J family as part of its broad portfolio of automotive, industrial, and power management semiconductors.
The S29AS008J belongs to Infineon's legacy Cypress Flash memory product line, engineered specifically for reliable, low-voltage, in-system programmable boot code storage in safety-critical embedded systems.
FAQ
Does S29AS008J70TFI040 support both x8 and x16 data bus configurations?
Yes. The BYTE# pin selects bus width: logic low configures x8 mode (DQ0–DQ7 active, DQ15/A-1 functions as address A-1); logic high enables x16 mode (DQ0–DQ15 active). This dual-mode capability eliminates external multiplexing logic and simplifies migration between 8-bit and 16-bit microcontroller platforms.
What is the function of the Secured Silicon Sector, and how is it programmed?
The Secured Silicon Sector is a dedicated 256-byte region containing a factory- or customer-programmable 16-byte electronic serial number. Programming requires issuing the Enter Secured Silicon Sector command followed by standard word-program commands. Once locked (via Lock Command), it becomes permanently read-only - used for device authentication and anti-cloning in regulated applications.
How does the Erase Suspend feature improve system responsiveness during firmware updates?
Erase Suspend halts an ongoing sector erase operation, allowing the host to read from or program any non-erasing sector within the same device. After servicing the interrupt, Erase Resume restarts the suspended erase. This enables real-time diagnostics or user interaction without risking data corruption - essential for fail-safe OTA update stacks.
Is the WP# pin internally pulled up, and what happens when left unconnected?
Yes. WP# has an internal pull-up resistor; when unconnected, it defaults to VIH (logic high), disabling write protection. To activate hardware write protection for the two outermost boot sectors, WP# must be driven low. This design prevents accidental boot-sector overwrite while allowing flexible board-level control via MCU GPIO or discrete logic.
S29AS008J70TFI040 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- AS-J
- Package/Case:
- 48-TFSOP (0.724", 18.40mm Width)
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH - NOR
- Memory Size:
- 8Mbit
- Memory Organization:
- 1M x 8, 512K x 16
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 70ns
- 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-TSOP
S29AS008J70TFI040 FAQ
1.How can I place an order for S29AS008J70TFI040 through Aetrix?
Please submit a Request for Quotation (RFQ) for S29AS008J70TFI040 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 S29AS008J70TFI040 reliable?
The price and inventory of S29AS008J70TFI040 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S29AS008J70TFI040 is usually 5 days.
3.What payment methods are accepted for S29AS008J70TFI040?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S29AS008J70TFI040 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S29AS008J70TFI040?
S29AS008J70TFI040 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S29AS008J70TFI040 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 S29AS008J70TFI040?
For technical support, including S29AS008J70TFI040 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S29AS008J70TFI040 requirements.
6.How does Aetrix verify that S29AS008J70TFI040 is sourced from the original manufacturer or authorized distributors?
All S29AS008J70TFI040 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 S29AS008J70TFI040 meets industry standards.
7.What is the process for return or replacement of S29AS008J70TFI040?
All S29AS008J70TFI040 units undergo pre-shipment inspection (PSI). If there is an issue with S29AS008J70TFI040, 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 S29AS008J70TFI040 part is unused and in its original packaging.
Return procedure for S29AS008J70TFI040:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
S29AS008J70TFI040 Tags
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M24C02-WMN6TP
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