Infineon Technologies S29AS008J70TFI033
- Part No.:
- S29AS008J70TFI033
- Manufacturer:
- Infineon Technologies
- Category:
- Memory
- Package:
- 48-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
S29AS008J70TFI033.pdf
- Description:
- IC FLASH 8MBIT PARALLEL 48TSOP
- Quantity:
- Payment:

- Shipping:

Inventory:1,214
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Product details
Overview
S29AS008J70TFI033 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 with top/bottom configurable boot blocks. It delivers 70 ns access time, operates across –40°C to +85°C, supports CFI interface and Erase Suspend/Resume, and is used for firmware storage in industrial microcontroller boot systems.
For engineers reviewing the S29AS008J70TFI033 datasheet, S29AS008J70TFI033 pinout, S29AS008J70TFI033 application, or S29AS008J70TFI033 equivalent, key selection criteria include 1.8 V single-supply operation, boot sector protection granularity, RY/BY# hardware status signaling, and JEDEC-compliant command set compatibility for embedded firmware update reliability.
Technical Context
The S29AS008J70TFI033 implements a sector-erase Flash architecture with eight 8 KB and fifteen 64 KB sectors (byte mode), enabling selective reprogramming without disturbing adjacent code. Its internal state machine executes Embedded Program and Embedded Erase algorithms, automatically timing pulses and verifying cell margin.
It features dual-mode data bus (x8/x16), selectable via BYTE# pin, with DQ15 serving as A–1 in byte mode. Hardware protections include VCC detector–based write inhibition, WP#-controlled boot-sector lock, and programmable sector group protection-both permanent and temporary unprotect modes supported.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 8 Mbit (1,048,576 × 8 or 524,288 × 16), enabling full bootloader + configuration storage in one device |
| Supply Voltage | 1.65–1.95 V - compatible with modern low-voltage SoC I/O domains and battery-powered systems |
| Access Time | 70 ns - eliminates wait states for 14 MHz+ microcontrollers in read-intensive boot sequences |
| Programming Time | 6 µs typical per word - accelerates field firmware patching and calibration updates |
| Endurance | 1,000,000 erase/program cycles per sector - supports >10 years of daily OTA updates in industrial gateways |
| Data Retention | 20 years typical at +85°C - ensures firmware integrity over full product lifecycle in harsh environments |
| Operating Temp | –40°C to +85°C - qualified for industrial control, automotive body electronics, and edge sensor nodes |
Pinout & Package
Package: 48-ball FBGA (VBK048, 8.15 mm × 6.15 mm) and 48-pin TSOP (TS 048). Both packages support identical pin functions and timing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A18 | Address inputs | 19-bit address bus supporting full 8 Mbit addressing; A–1 multiplexed on DQ15 in byte mode |
| DQ0–DQ15 (A–1) | Data I/O / LSB address | 16-bit bidirectional data bus in word mode; DQ15 becomes A–1 LSB in byte mode for x8 operation |
| CE#, OE#, WE# | Chip/Output/Write enable | Independent controls eliminate bus contention; enable interleaved read/write in multi-device systems |
| RY/BY# | Ready/Busy output | Active-low open-drain signal - allows hardware polling without CPU overhead during erase/program |
| RESET# | Hardware reset input | Asynchronous reset to read mode - synchronizes boot firmware fetch after power-on or system fault |
| WP# | Write protect input | Hardware lock for two outermost boot sectors - prevents accidental overwrite of critical startup code |
| BYTE# | Bus width select | High = x16 mode (DQ15–DQ0 active); Low = x8 mode (DQ7–DQ0 active, DQ15 = A–1) |
Key Features
| Feature | Design Value |
|---|---|
| Secured Silicon Sector | 256-byte factory- or customer-programmable region with 16-byte electronic serial number for secure device identity binding |
| Erase Suspend/Resume | Pause ongoing sector erase to read/program non-target sectors - enables true background firmware updates |
| Unlock Bypass Mode | Reduces sequential programming time by 50% vs standard command sequence (2 writes vs 4) |
| CFI Compliance | Standardized JEDEC register map - enables automatic flash driver detection and configuration in Linux/U-Boot |
| Automatic Sleep Mode | Enters <15 µA sleep current after address stability - extends battery life in always-on IoT endpoints |
Applications
| Industrial PLC Firmware Storage | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Storing boot code and runtime firmware for programmable logic controllers operating in factory-floor environments with voltage fluctuations and EMI. IC Role / Device Role / Timing Role: Nonvolatile firmware storage with hardware write protection and RY/BY# status signaling for deterministic boot timing. Use Value: Sector group protection prevents corruption during brown-out recovery; 20-year retention ensures firmware integrity over 15+ year equipment lifespans. | Use Scenario: Holding calibrated sensor parameters and bootloader code in automotive BCMs subject to wide temperature swings and vibration. IC Role / Device Role / Timing Role: Boot sector Flash providing fast 70 ns reads for immediate MCU execution and WP#-hardened protection of safety-critical startup routines. Use Value: –40°C to +85°C operation meets AEC-Q100 Grade 3 requirements; 1M cycle endurance supports lifetime recalibration updates. |
| Medical Diagnostic Equipment Boot Memory | Smart Energy Meter Firmware |
Use Scenario: Hosting certified boot firmware and regulatory-compliant application code in Class II medical devices requiring traceable firmware versions. IC Role / Device Role / Timing Role: Secured Silicon Sector stores unique device ID and cryptographic keys; CFI interface enables automated firmware validation during production test. Use Value: Factory-lockable 256-byte sector provides tamper-evident identity binding; JEDEC compliance simplifies FDA audit documentation. | Use Scenario: Storing metrology firmware and tariff tables in utility-grade smart meters deployed in outdoor enclosures with high humidity and thermal cycling. IC Role / Device Role / Timing Role: Low-power Flash with 8 µA standby current and automatic sleep mode minimizes battery drain during long idle periods between meter reads. Use Value: 1.8 V operation matches energy-harvesting PMU outputs; 20-year data retention satisfies ANSI C12.22 certification for 20-year field deployment. |
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 |
|---|---|---|---|
| S29GL032N11TFI010 | 32 Mbit density, 110 ns access, 3.0 V supply - larger capacity but higher voltage and slower timing | Requires level-shifting for 1.8 V systems; suited for legacy 3.3 V designs needing more space | Select only if migrating from older Cypress 3V families and board redesign is feasible |
| MX29GL032EHTI-70G | 32 Mbit, 70 ns, 1.8 V - same speed/voltage but no Secured Silicon Sector or CFI support | Lacks electronic serial number and auto-detect capability; requires custom driver development | Choose when cost sensitivity outweighs secure identity and software portability needs |
Compared with S29AS008J70TFI033, the S29GL032N11TFI010 offers greater density but demands 3.0 V infrastructure changes, while the MX29GL032EHTI-70G sacrifices security and CFI interoperability for lower unit cost - making the S29AS008J70TFI033 optimal for new 1.8 V designs requiring firmware integrity and field-upgrade flexibility.
Availability
S29AS008J70TFI033 is available at Aetrix Electronics and suitable for industrial PLC firmware storage, automotive body control modules, and medical diagnostic equipment requiring stable component supply and long-term obsolescence management.
Supply support for S29AS008J70TFI033 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 is a global semiconductor leader headquartered in Munich, Germany, specializing in power management, sensing, connectivity, and security solutions for industrial, automotive, and IoT markets.
The S29AS008J belongs to Infineon's legacy Cypress Flash memory product line, engineered specifically for reliable, low-voltage firmware storage in resource-constrained embedded systems where boot integrity and field update resilience are critical.
FAQ
Is S29AS008J70TFI033 pin-compatible with earlier S29AS008J variants?
Yes - the '70TFI033' suffix denotes a specific FBGA package (VBK048), temperature grade (–40°C to +85°C), and speed grade (70 ns). All S29AS008J variants share identical pinouts and command sets across TSOP and FBGA packages, enabling drop-in replacement within the same package type.
Does the Secured Silicon Sector require special programming equipment?
No - the Secured Silicon Sector is programmed using standard command sequences via the host processor's existing Flash interface. Factory locking is performed during test; customer locking uses the same CFI-compliant protocol as main array programming, requiring no additional hardware.
Can Erase Suspend be used during chip-erase operations?
No - Erase Suspend is supported only for sector-erase commands, not chip-erase. During chip-erase, the device does not allow suspension; the operation must complete before any other command is accepted. This is documented in Section 10.7 of the datasheet.
What is the function of the BYTE# pin during power-up?
The BYTE# pin must be driven to a valid logic level (high for x16, low for x8) before CE# is asserted for the first access. If left floating, undefined bus width behavior may occur. Internal pull-down is not provided - external biasing is required for robust initialization in production systems.
S29AS008J70TFI033 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- AS-J
- 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 - 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
S29AS008J70TFI033 FAQ
1.How can I place an order for S29AS008J70TFI033 through Aetrix?
Please submit a Request for Quotation (RFQ) for S29AS008J70TFI033 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 S29AS008J70TFI033 reliable?
The price and inventory of S29AS008J70TFI033 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S29AS008J70TFI033 is usually 5 days.
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Once your S29AS008J70TFI033 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 S29AS008J70TFI033?
For technical support, including S29AS008J70TFI033 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S29AS008J70TFI033 requirements.
6.How does Aetrix verify that S29AS008J70TFI033 is sourced from the original manufacturer or authorized distributors?
All S29AS008J70TFI033 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 S29AS008J70TFI033 meets industry standards.
7.What is the process for return or replacement of S29AS008J70TFI033?
All S29AS008J70TFI033 units undergo pre-shipment inspection (PSI). If there is an issue with S29AS008J70TFI033, 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 S29AS008J70TFI033 part is unused and in its original packaging.
Return procedure for S29AS008J70TFI033:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
S29AS008J70TFI033 Tags

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M24C02-WMN6TP
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