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Microchip Technology AT49F4096A-70TC
- Part No.:
- AT49F4096A-70TC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
AT49F4096A-70TC.pdf
- Description:
- IC FLASH 4MBIT PARALLEL 48TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,601
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Product details
Overview
AT49F4096A-70TC from Atmel is a 4-Mbit (512K × 8 / 256K × 16) parallel-interface Flash memory IC operating at 5 V, featuring 70 ns read access time, sector-based erase architecture (including 8K-word boot block with lockout), and byte/word programming in 10 µs typical. It serves as non-volatile program storage in embedded microcontroller boot systems.
For engineers reviewing the AT49F4096A-70TC datasheet, AT49F4096A-70TC pinout, AT49F4096A-70TC application, or AT49F4096A-70TC equivalent, key selection criteria include boot-block protection logic, TSOP-48 package compatibility, 5V-only operation, hardware reset override for locked sectors, and Data Polling/Toggle Bit end-of-program detection.
Technical Context
The AT49F4096A-70TC implements a four-sector Flash architecture: one 8K-word boot block (00000H–01FFFH), two 4K-word parameter blocks, and one 240K-word main array. Erase and program operations are fully internalized via command sequences written to specific address/data latches using standard CE/OE/WE timing.
It supports dual data bus modes-byte (I/O0–I/O7 active, I/O15 repurposed as A−1) or word (I/O0–I/O15 active)-controlled by the BYTE pin. Hardware data protection includes VCC sense (<3.8 V inhibits programming), 10 ms power-on delay, and noise filtering on WE/CE inputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4 Mbit (512K × 8 or 256K × 16 organization) |
| Read Access Time | 70 ns - enables direct CPU interface without wait states in 5 MHz bus systems |
| Programming Time | 10 µs typical per byte/word - supports fast field updates without external high-voltage circuitry |
| Standby Current | 100 µA CMOS - reduces system power in sleep modes |
| Endurance | 10,000 write/erase cycles - validated for firmware update cycles in industrial control units |
| Erase Block Time | 10 seconds typical per sector - balances speed and reliability for parameter block reconfiguration |
| Supply Voltage | 5 V ± 10% - eliminates need for dedicated programming voltage rails |
Pinout & Package
AT49F4096A-70TC is packaged in a 48-lead Plastic Thin Small Outline Package (TSOP), JEDEC MO-142 D compliant, with 0.5 mm lead pitch and body dimensions of 12.0 × 20.0 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A17 | Address Inputs | 18-bit address bus supporting full 512K-byte addressing space |
| I/O0–I/O15 | Data I/O (Word Mode) | 16-bit bidirectional data path; in byte mode, I/O0–I/O7 active, I/O15 becomes LSB address input (A−1) |
| CE | Chip Enable | Active-low chip select; must be low with OE low and WE high for valid read output |
| OE | Output Enable | Active-low output gate; controls data bus tristate independently of CE for bus sharing |
| WE | Write Enable | Active-low write strobe; latches command/data during programming/erase sequences |
| RESET | Hardware Reset | High = normal operation; low = outputs tri-stated; 12 V applied enables boot block override |
| BYTE | Bus Width Select | Logic 1 or open = 16-bit word mode; logic 0 = 8-bit byte mode with A−1 on I/O15 |
| VCC / GND | Power Supply | 5 V core supply; dual GND pins reduce ground bounce in high-speed read cycles |
Key Features
| Feature | Design Value |
|---|---|
| Boot Block Programming Lockout | Prevents accidental overwrite of secure boot code (00000H–01FFFH) unless 12 V RESET override is applied |
| Data Polling & Toggle Bit | Real-time status feedback via I/O7 complement or I/O6 toggling - eliminates need for fixed timeout delays during programming |
| Sector Erase Architecture | Independent erasure of boot block, two parameter blocks, or main array - enables selective firmware updates without full chip erase |
| Hardware Data Protection | VCC sense, 10 ms power-up delay, and 15 ns noise filtering prevent spurious writes during power transients or EMI events |
| Single 5 V Supply Operation | Eliminates requirement for +12 V or −5 V programming voltages - simplifies PCB layout and power design |
Applications
| Industrial PLC Firmware Storage | Medical Device Boot Code Retention |
|---|---|
Use Scenario: Storing bootloader and safety-critical initialization routines in programmable logic controllers subject to frequent firmware updates. IC Role / Device Role / Timing Role: Non-volatile boot memory providing deterministic startup sequence execution after cold reset. Use Value: Boot block lockout ensures certified firmware remains intact during field upgrades of application code in main memory array. | Use Scenario: Holding FDA-approved boot firmware in diagnostic imaging equipment requiring traceable, tamper-resistant storage. IC Role / Device Role / Timing Role: Secure, electrically erasable program memory with hardware-enforced write protection for regulatory compliance. Use Value: 12 V RESET override allows authorized service technicians to reprogram boot code while maintaining default lockout in production units. |
| Automotive Engine Control Unit (ECU) | Telecom Base Station Parameter Storage |
Use Scenario: Storing calibration tables and fail-safe routines in engine management systems operating across −40°C to +85°C. IC Role / Device Role / Timing Role: Temperature-rated Flash memory interfacing directly with 16-bit microcontroller address/data buses. Use Value: 70 ns read access meets real-time interrupt latency requirements; sector erase isolates calibration updates from main firmware. | Use Scenario: Maintaining configuration parameters (e.g., RF channel maps, power thresholds) in cellular base station remote radio units. IC Role / Device Role / Timing Role: Field-upgradable non-volatile parameter memory supporting hot-swap maintenance without full system reboot. Use Value: Two independent 4K-word parameter blocks allow A/B versioning - one active while the other is updated and verified. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AM29LV400BT-70EC | 4 Mbit, 3 V core, 70 ns access, top-boot sector, requires 3 V supply and separate VPP for programming | Lower power but incompatible voltage domain; not drop-in for 5 V systems | Select only if migrating to 3 V platform with compatible bus timing and reset signaling |
| SST39VF400A-70-4C-EKE | 4 Mbit, 3 V, 70 ns, bottom-boot, single 3 V supply, no VPP required, different command set | Lacks 12 V RESET override; boot lockout implemented via software-only method | Choose when 3 V operation is mandatory and hardware-level boot protection override is not required |
Compared with AM29LV400BT-70EC and SST39VF400A-70-4C-EKE, the AT49F4096A-70TC uniquely supports 5 V-only operation with hardware-enforced boot block protection and 12 V RESET override - critical for legacy industrial and automotive designs retaining 5 V infrastructure.
Availability
AT49F4096A-70TC is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device boot code retention, and automotive ECU calibration table applications requiring stable component supply across extended temperature ranges.
Supply support for AT49F4096A-70TC 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
Atmel Corporation (now part of Microchip Technology) is a semiconductor manufacturer specializing in microcontrollers, Flash memory, and secure authentication devices.
The AT49F4096A product line delivers 5 V parallel Flash memory optimized for embedded boot code storage, featuring hardware-based sector protection and in-system reprogrammability without external high-voltage generators.
FAQ
What is the operating temperature range for the AT49F4096A-70TC?
The AT49F4096A-70TC is rated for commercial operation from 0°C to +70°C. Its TSOP-48 package and internal design meet this specification under continuous 5 V supply and standard AC timing conditions. This range supports use in office automation, test equipment, and non-harsh environment embedded systems where ambient thermal management is controlled.
Does the AT49F4096A-70TC require external high-voltage circuitry for programming?
No, the AT49F4096A-70TC does not require external high-voltage circuitry for programming. It operates exclusively from a single 5 V ±10% supply, with internal charge pumps generating necessary programming voltages. All command sequences-including byte/word programming, sector erase, and boot lockout-are executed using standard 5 V logic levels on CE, OE, WE, and address/data lines.
How is boot block protection enforced and overridden on the AT49F4096A-70TC?
Boot block protection on the AT49F4096A-70TC is enforced via a software command sequence that locks the 8K-word boot sector (00000H–01FFFH) against programming or erasure at ≤5.5 V. Override requires applying 12.0 V ±0.5 V to the RESET pin during the entire erase or program operation - a hardware-level mechanism distinct from software unlock methods used by competing Flash devices.
What package type does the AT49F4096A-70TC use, and what are its mechanical dimensions?
The AT49F4096A-70TC uses a 48-lead Plastic Thin Small Outline Package (TSOP), JEDEC MO-142 D compliant. Its body measures 12.0 mm × 20.0 mm with 0.5 mm lead pitch. The package features gull-wing leads and is designed for surface-mount reflow assembly, supporting automated optical inspection and high-density PCB layouts in space-constrained applications.
Can the AT49F4096A-70TC operate in both byte and word data bus configurations?
Yes, the AT49F4096A-70TC supports both configurations via the BYTE pin. When BYTE = logic 1 or open, it operates in 16-bit word mode with I/O0–I/O15 active. When BYTE = logic 0, it switches to 8-bit byte mode: I/O0–I/O7 drive data, I/O8–I/O14 are tri-stated, and I/O15 functions as the LSB address input (A−1), enabling flexible integration with 8-bit or 16-bit microprocessor buses.
AT49F4096A-70TC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- 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
- Memory Size:
- 4Mbit
- Memory Organization:
- 512K x 8, 256K x 16
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 50µs
- Access Time:
- 70 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TSOP
AT49F4096A-70TC FAQ
1.How can I place an order for AT49F4096A-70TC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49F4096A-70TC 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 AT49F4096A-70TC reliable?
The price and inventory of AT49F4096A-70TC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49F4096A-70TC is usually 5 days.
3.What payment methods are accepted for AT49F4096A-70TC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49F4096A-70TC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49F4096A-70TC?
AT49F4096A-70TC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49F4096A-70TC 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 AT49F4096A-70TC?
For technical support, including AT49F4096A-70TC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49F4096A-70TC requirements.
6.How does Aetrix verify that AT49F4096A-70TC is sourced from the original manufacturer or authorized distributors?
All AT49F4096A-70TC 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 AT49F4096A-70TC meets industry standards.
7.What is the process for return or replacement of AT49F4096A-70TC?
All AT49F4096A-70TC units undergo pre-shipment inspection (PSI). If there is an issue with AT49F4096A-70TC, 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 AT49F4096A-70TC part is unused and in its original packaging.
Return procedure for AT49F4096A-70TC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT49F4096A-70TC Tags
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