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Microchip Technology AT49F4096A-70TI
- Part No.:
- AT49F4096A-70TI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
AT49F4096A-70TI.pdf
- Description:
- IC FLASH 4MBIT PARALLEL 48TSOP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
AT49F4096A-70TI from Atmel is a 5V-only, 4-Mbit (524,288 × 8 or 256K × 16) parallel Flash memory with 70 ns read access time, sector-based erase architecture (including 8K-word boot block with lockout), and byte/word programming at 10 µs typical. It operates across –40°C to +85°C and delivers 50 mA active current and 100 µA CMOS standby current, targeting embedded firmware storage in industrial microcontroller systems.
For engineers reviewing the AT49F4096A-70TI datasheet, AT49F4096A-70TI pinout, AT49F4096A-70TI application, or AT49F4096A-70TI equivalent, key selection criteria include boot-block protection integrity, 70 ns timing compliance in 5V bus interfaces, sector erase granularity for field firmware updates, and TSOP-48 package compatibility with legacy PCB layouts.
Technical Context
The AT49F4096A-70TI 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 address/data latches - no external high-voltage generator required.
Its dual-mode I/O interface supports byte (I/O0–I/O7 active, BYTE = 0) or word (I/O0–I/O15 active, BYTE = 1 or open) configuration. Hardware data protection includes VCC sense (<3.8 V inhibits programming), 10 ms power-on delay, and noise filtering on WE/CE inputs (rejects <15 ns pulses).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4 Mbit (524,288 × 8 or 256K × 16), enabling full firmware image storage for mid-complexity MCUs |
| Read Access Time | 70 ns max - meets timing budget for 14 MHz ISA-style or 80C51-compatible parallel buses |
| Operating Voltage | 5 V ±10% - single-rail operation eliminates need for charge pumps or auxiliary supplies |
| Active Current | 50 mA typical - compatible with standard 5V LDO regulators without thermal derating |
| Standby Current | 100 µA CMOS - enables low-power sleep modes in battery-backed or energy-sensitive systems |
| Erase Cycle Time | 10 s typical per sector - supports predictable field update windows without system hang |
| Endurance | 10,000 write/erase cycles - sufficient for firmware revision management over 5+ year product life |
Pinout & Package
AT49F4096A-70TI is packaged in a 48-lead Plastic Thin Small Outline Package (TSOP Type I, 12 × 20 mm), JEDEC MO-142 compliant, with 0.50 mm lead pitch and gull-wing leads. Pin 1 identifier is marked by a dot or beveled corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A17 | Address Inputs | 18-bit address bus supporting full 524K-byte addressing space; A-1 function multiplexed on I/O15 in byte mode |
| CE | Chip Enable | Active-low chip select - must be asserted before OE/WE to avoid bus contention during read/write |
| OE | Output Enable | Active-low output gate - controls data bus drive only; high-Z when deasserted regardless of CE state |
| WE | Write Enable | Active-low write strobe - latches command/data during programming/erase; must be high during reads |
| RESET | Reset Input | Hardware reset and boot-block override: 12 V applied here unlocks protected sectors during reprogramming |
| BYTE | Interface Mode Select | Logic 0 = byte mode (I/O0–I/O7 active); logic 1 or open = word mode (I/O0–I/O15 active) |
| I/O0–I/O15 | Data I/O Bidirectional Bus | Tri-state outputs with 2.1 mA sink / 400 µA source capability; I/O15 doubles as A-1 LSB address in byte mode |
| VCC, GND | Power Supply | Single 5 V supply; decoupling required within 10 mm of pins due to fast switching transients |
Key Features
| Feature | Design Value |
|---|---|
| Boot Block Programming Lockout | 8K-word (00000H–01FFFH) region permanently protected after command sequence - prevents accidental overwrite of bootloader code |
| Internal Erase/Program Control | No external high-voltage generator needed; all timing and voltage sequencing handled on-die - simplifies system-level design |
| Data Polling & Toggle Bit | I/O7 complement and I/O6 toggling provide real-time, non-intrusive status feedback during programming/erase - eliminates need for fixed delay timers |
| Sector Architecture | Four independent erase blocks (boot + 2× parameter + main) enable selective firmware updates without full chip erase - reduces field update time by >90% |
| Hardware Data Protection | VCC sense, 10 ms power-up delay, and noise filtering prevent spurious writes during brown-out or EMI events - improves field reliability |
Applications
| Industrial PLC Firmware Storage | Medical Device Bootloader Memory |
|---|---|
Use Scenario: Storing certified bootloader and safety-critical startup routines in programmable logic controllers deployed in factory automation environments. IC Role / Device Role / Timing Role: Non-volatile firmware storage with hardware-enforced boot block protection and 70 ns read latency for deterministic MCU boot timing. Use Value: Prevents unauthorized modification of boot code via the 12 V RESET override only - satisfies IEC 61508 SIL-2 functional safety requirements for secure boot integrity. |
Use Scenario: Holding FDA-cleared diagnostic firmware and calibration tables in portable ultrasound or infusion pump controllers requiring long-term data retention. IC Role / Device Role / Timing Role: Field-upgradable Flash memory with sector-erase granularity to support regulatory-mandated firmware patches without full device recall. Use Value: 10,000-cycle endurance and 100 µA standby current ensure 10+ years of reliable operation between battery charges in Class II medical equipment. |
| Automotive Body Control Module | Telecom Base Station Configuration |
Use Scenario: Storing vehicle-specific configuration data (e.g., door lock logic, lighting profiles) in body control modules operating across –40°C to +85°C. IC Role / Device Role / Timing Role: Industrial-grade parallel Flash with guaranteed 70 ns access at temperature extremes - maintains CAN bus initialization timing under cold cranking conditions. Use Value: TSOP-48 package allows drop-in replacement of legacy EPROMs in existing automotive PCBs without layout redesign. |
Use Scenario: Retaining FPGA bitstreams and radio calibration parameters in outdoor 4G/LTE base station remote radio units exposed to wide thermal cycling. IC Role / Device Role / Timing Role: Sector-erasable non-volatile memory enabling carrier-specific firmware updates without service interruption to active RF channels. Use Value: Parameter block architecture isolates critical calibration data from main firmware updates - ensures RF performance stability post-field upgrade. |
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 | 4 Mbit, 70 ns, 3.3 V core (5 V tolerant I/O), 48-TSOP; lacks dedicated boot block lockout | Requires external voltage translation in pure 5 V systems; no hardware-protected boot region | Select if migrating to 3.3 V system architecture and software-managed protection suffices |
| MX29LV400CBTI-70G | 4 Mbit, 70 ns, 3.0 V operation, 48-TSOP; top-boot configuration (boot block at highest addresses) | Boot block location inverted vs. AT49F4096A-70TI's bottom-boot - requires linker script adjustment | Select for new 3 V designs where top-boot alignment matches existing firmware partitioning |
Compared with SST39VF400A-70-4C-EKE and MX29LV400CBTI-70G, the AT49F4096A-70TI uniquely provides 5 V-only operation with hardware-enforced bottom-boot protection and direct TSOP-48 pin compatibility - critical for maintaining legacy 5 V industrial controller designs without redesign.
Availability
AT49F4096A-70TI is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device bootloader memory, automotive body control modules, telecom base station configuration, and embedded instrumentation requiring stable component supply across extended temperature ranges.
Supply support for AT49F4096A-70TI 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 fabless semiconductor company specializing in microcontrollers, Flash memory, and secure authentication ICs for industrial, automotive, and communications markets.
The AT49F4096A-70TI belongs to Atmel's parallel Flash memory product line, designed specifically for embedded systems requiring robust, field-upgradable firmware storage with hardware-level security and industrial temperature operation.
FAQ
What is the operating temperature range for the AT49F4096A-70TI?
The AT49F4096A-70TI is rated for industrial temperature operation from –40°C to +85°C. This range is validated per the DC and AC operating specifications in the official Atmel datasheet (Rev. 1604E), ensuring reliable read, program, and erase functionality across the full span without derating. The TSOP-48 package construction supports this rating through qualified thermal cycling performance.
Does the AT49F4096A-70TI support both byte and word data interfaces?
Yes, the AT49F4096A-70TI supports configurable byte or word operation via the BYTE pin. When BYTE = 0, only I/O0–I/O7 are active (8-bit bus); when BYTE = 1 or left open, I/O0–I/O15 operate as a 16-bit bus. In byte mode, I/O15 functions as the A-1 address input - a hardware feature confirmed in the pin configuration diagrams and functional description sections of the AT49F4096A-70TI datasheet.
How is boot block protection enabled and overridden on the AT49F4096A-70TI?
Boot block protection on the AT49F4096A-70TI is enabled via a six-cycle command sequence (5555h/AAh → 2AAAh/55h → 5555h/80h → 5555h/AAh → 2AAAh/55h → 5555h/40h). Once set, the 8K-word boot block (00000H–01FFFH) cannot be erased or programmed at ≤5.5 V. Override requires applying 12.0 V ±0.5 V to the RESET pin during the entire erase or program cycle - a hardware-level feature documented in the "Boot Block Programming Lockout Override" section.
What packaging options are available for the AT49F4096A-70TI?
The AT49F4096A-70TI is specifically offered in the 48-lead Plastic Thin Small Outline Package (TSOP Type I, 12 × 20 mm), designated as package code "48T" in Atmel's ordering information. This differs from other variants like AT49F4096A-70C1I (CBGA 7×7 mm) or AT49F4096A-70C5I (CBGA 6×8 mm). The TSOP-48 footprint is standardized per JEDEC MO-142, enabling direct replacement in legacy 5 V parallel memory sockets.
Can the AT49F4096A-70TI be reprogrammed in-system without removing it from the PCB?
Yes, the AT49F4096A-70TI supports full in-system reprogrammability via standard 5 V logic levels - no high-voltage programming adapter is required. Reprogramming is performed using documented command sequences (e.g., Byte/Word Program, Sector Erase) written to specific address/data latches. The device's internal control logic handles all timing and voltage generation, making the AT49F4096A-70TI suitable for field firmware updates without board removal.
AT49F4096A-70TI 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:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TSOP
AT49F4096A-70TI FAQ
1.How can I place an order for AT49F4096A-70TI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49F4096A-70TI 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-70TI reliable?
The price and inventory of AT49F4096A-70TI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49F4096A-70TI is usually 5 days.
3.What payment methods are accepted for AT49F4096A-70TI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49F4096A-70TI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49F4096A-70TI?
AT49F4096A-70TI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49F4096A-70TI 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-70TI?
For technical support, including AT49F4096A-70TI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49F4096A-70TI requirements.
6.How does Aetrix verify that AT49F4096A-70TI is sourced from the original manufacturer or authorized distributors?
All AT49F4096A-70TI 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-70TI meets industry standards.
7.What is the process for return or replacement of AT49F4096A-70TI?
All AT49F4096A-70TI units undergo pre-shipment inspection (PSI). If there is an issue with AT49F4096A-70TI, 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-70TI part is unused and in its original packaging.
Return procedure for AT49F4096A-70TI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT49F4096A-70TI Tags
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