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Microchip Technology AT49F8192AT-70TC
- Part No.:
- AT49F8192AT-70TC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
AT49F8192AT-70TC.pdf
- Description:
- IC FLASH 8MBIT PARALLEL 48TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,340
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Product details
Overview
AT49F8192AT-70TC from Atmel is a 5V, 8-megabit (512K × 16-bit or 1M × 8-bit) top-boot Flash memory IC with 70 ns read access time, sector-based erase architecture (8K-word boot block, two 4K-word parameter blocks, 496K-word main array), and hardware data protection. It supports byte/word programming (10 µs typical), internal erase/program control, and operates in commercial temperature range (0°C to 70°C) for embedded firmware storage in microcontroller-based systems.
For engineers reviewing the AT49F8192AT-70TC datasheet, AT49F8192AT-70TC pinout, AT49F8192AT-70TC application, or AT49F8192AT-70TC equivalent, this page delivers verified technical context, exact pin functions for TSOP-48 package, real-world use cases in boot code storage and firmware update, and validated alternative parts with documented functional and architectural differences.
Technical Context
The AT49F8192AT-70TC implements a top-boot sector architecture where the 8K-word boot block resides at address range 7E000H–7FFFFH, enabling secure system initialization code storage. Its command-set-driven operation uses six-cycle sequences for chip/sector erase and four-cycle sequences for byte/word programming, all internally timed without external clocks.
It features dual-mode I/O configuration via the BYTE pin: logic high or open enables 16-bit word mode (I/O0–I/O15 active); logic low enables 8-bit byte mode (I/O0–I/O7 active, I/O15 repurposed as A−1 LSB address input). RDY/BUSY is not present on this variant-end-of-operation detection relies solely on DATA polling (I/O7 complement) and TOGGLE BIT (I/O6).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 8 Mbit (512K × 16-bit or 1M × 8-bit organization) |
| Read Access Time | 70 ns - determines maximum bus clock frequency for zero-wait-state reads in 8051/ARM7-based systems |
| Supply Voltage | 5 V ± 10% - compatible with legacy 5V microcontroller buses without level shifting |
| Active Current | 50 mA - defines power budget impact during firmware read operations |
| Standby Current | 300 µA CMOS - enables low-power retention in battery-backed applications |
| Endurance | 10,000 program/erase cycles - sets field-reliability limit for over-the-air firmware updates |
| Erase Time | 10 seconds per sector - constrains firmware update latency during field upgrades |
Pinout & Package
AT49F8192AT-70TC is packaged in a 48-lead Plastic Thin Small Outline Package (TSOP Type 1, 12 mm × 20 mm), compliant with JEDEC MO-141BA. Pin 1 marked with white dot; pin 1 corner located at bottom-left when notch faces up.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A18 | Address Inputs | 19-bit address bus supporting full 512K-word addressing in 16-bit mode; A−1 function assigned to I/O15 in byte mode |
| CE | Chip Enable | Active-low chip select; must be low with OE low and WE high for valid read access |
| OE | Output Enable | Active-low output gate; controls data bus tristate to prevent contention during multiplexed bus sharing |
| WE | Write Enable | Active-low write strobe; latches address/data during command sequences and programming cycles |
| RESET | Reset Input | Active-high reset; halts ongoing operations and forces high-impedance outputs; 12V override enables boot block reprogramming |
| RDY/BUSY | Ready/Busy Output | Not implemented on AT49F8192AT-70TC - device relies on DATA polling (I/O7) and TOGGLE BIT (I/O6) instead |
| I/O0–I/O15 | Data I/O (16-bit) | In word mode: bidirectional 16-bit data bus; in byte mode: I/O0–I/O7 active, I/O15 = A−1, I/O8–I/O14 tri-stated |
| BYTE | Mode Select | Logic high or open = 16-bit word mode; logic low = 8-bit byte mode with A−1 remapping |
| VCC / GND | Power Supply | 5V core supply (VCC) and ground (GND) pins; decoupling required within 10 mm of package |
Key Features
| Feature | Design Value |
|---|---|
| Top-boot sector architecture | Boot block at 7E000H–7FFFFH enables secure bootloader storage independent of application firmware updates |
| Hardware data protection | VCC sense (<3.8V inhibits programming), 10 ms power-on delay, noise filtering (<15 ns pulses ignored), and CE/OE/WE interlock prevent accidental writes |
| DATA polling & TOGGLE BIT | I/O7 complement and I/O6 toggling provide deterministic, software-controlled end-of-program/erase detection without RDY/BUSY pin |
| Boot block programming lockout | Command-enabled write protection prevents corruption of critical startup code; overridden only by 12V RESET during erase/program |
| Sector-erase granularity | Four independently erasable sectors (boot + 2× parameter + main) allow targeted firmware updates without full chip erase |
Applications
| Industrial PLC Firmware Storage | Automotive ECU Bootloader |
|---|---|
|
Use Scenario: Storing firmware images and configuration parameters in programmable logic controllers deployed in factory automation environments. IC Role / Device Role / Timing Role: Nonvolatile code storage with top-boot architecture ensures bootloader integrity while allowing field-upgradable application firmware in main memory block. Use Value: Sector-level erase enables partial firmware updates without disrupting boot code; 70 ns access supports real-time scan cycle timing in deterministic control loops. |
Use Scenario: Hosting secure boot code and calibration data in engine control units requiring ASIL-B compliance and anti-tampering safeguards. IC Role / Device Role / Timing Role: Top-boot Flash providing protected execution environment for initial boot sequence and cryptographic key storage in safety-critical subsystems. Use Value: Boot block lockout prevents unauthorized modification of bootloader; 10,000-cycle endurance supports multi-year vehicle service life with periodic OTA updates. |
| Medical Device Configuration Memory | Networking Equipment BIOS Storage |
|
Use Scenario: Retaining device-specific calibration tables, user preferences, and regulatory-compliant audit logs in Class II medical instruments. IC Role / Device Role / Timing Role: High-reliability nonvolatile memory with hardware write protection ensuring data integrity across power cycles and environmental stress. Use Value: 300 µA standby current extends battery backup duration; sector architecture isolates calibration data from firmware updates to meet IEC 62304 traceability requirements. |
Use Scenario: Storing BIOS/UEFI firmware and hardware initialization routines in enterprise switches and routers requiring rapid boot and secure firmware recovery. IC Role / Device Role / Timing Role: Primary boot memory with top-boot layout enabling fail-safe fallback to known-good firmware image after corrupted update. Use Value: 70 ns read speed reduces POST time; boot block lockout prevents accidental overwrite during remote firmware deployment via TFTP or HTTP. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SST39VF800A-70-4C-EKE | 8 Mbit, 70 ns, bottom-boot architecture; lacks RESET pin and 12V override; uses different command set (SST proprietary) | Requires redesign of boot block address mapping and erase command flow; no hardware boot lockout override capability | Select when cost sensitivity outweighs need for top-boot flexibility and secure boot override; verify compatibility with existing programmer firmware |
| MX29LV800CTTI-70G | 8 Mbit, 70 ns, top-boot; includes RDY/BUSY pin and CFI query support; requires VPP = 12V for programming (not 5V-only) | Needs external high-voltage generator; RDY/BUSY simplifies timing but adds PCB routing complexity vs. polling-only AT49F8192AT-70TC | Prefer for new designs needing industry-standard CFI interface and hardware busy signaling; avoid if 5V-only operation is mandatory |
Compared with SST39VF800A-70-4C-EKE and MX29LV800CTTI-70G, the AT49F8192AT-70TC uniquely combines 5V-only operation, top-boot layout with 12V-reset override, and RDY/BUSY-less polling-based timing-making it optimal for legacy 5V controller systems requiring secure, field-upgradable boot code without high-voltage circuitry.
Availability
AT49F8192AT-70TC is available at Aetrix Electronics and suitable for industrial PLC firmware storage, automotive ECU bootloader implementation, and medical device configuration memory requiring stable component supply and long-term obsolescence management.
Supply support for AT49F8192AT-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 (now part of Microchip Technology) is a semiconductor manufacturer specializing in microcontrollers, nonvolatile memory, and security ICs for embedded systems.
The AT49F8192AT-70TC belongs to Atmel's parallel-interface Flash memory product line, designed specifically for 5V microprocessor-based systems requiring reliable, in-system reprogrammable code storage with hardware-enforced boot protection.
FAQ
What is the boot block location and size for AT49F8192AT-70TC?
The AT49F8192AT-70TC implements a top-boot architecture with an 8K-word (16K-byte) boot block located at address range 7E000H to 7FFFFH. This placement isolates critical startup code from application firmware stored in the main memory array (7B000H–7DFFFH), enabling secure and independent updates. The boot block supports optional programming lockout via command sequence.
Does AT49F8192AT-70TC support both 8-bit and 16-bit data bus configurations?
Yes, AT49F8192AT-70TC supports configurable bus width via the BYTE pin. When BYTE = high or open, it operates in 16-bit word mode with I/O0–I/O15 active. When BYTE = low, it switches to 8-bit byte mode: I/O0–I/O7 become data lines, I/O15 functions as A−1 (LSB address input), and I/O8–I/O14 enter high-impedance state-enabling flexible integration with 8-bit or 16-bit microcontrollers.
How is end-of-program or end-of-erase detected on AT49F8192AT-70TC?
AT49F8192AT-70TC uses two software-controlled methods: DATA polling (monitoring I/O7 for complement-to-data transition) and TOGGLE BIT (observing I/O6 toggling state). Unlike variants with RDY/BUSY pin, this device omits that signal-requiring firmware to poll I/O7 or I/O6 during programming or erase cycles to determine completion without external hardware signaling.
What voltage is required to override the boot block programming lockout on AT49F8192AT-70TC?
To override the boot block programming lockout on AT49F8192AT-70TC, a 12.0 V ± 0.5 V signal must be applied to the RESET pin throughout the entire chip erase, sector erase, or word programming operation. Once RESET returns to TTL levels, the lockout feature reactivates. This 12V override is the only method to reprogram the locked boot block without full device replacement.
Is AT49F8192AT-70TC compatible with standard JEDEC programming algorithms?
Yes, AT49F8192AT-70TC uses the standard JEDEC-compliant command set (e.g., 5555H/2AAAH sequences) and does not require modified algorithms. Its TSOP-48 pinout matches JEDEC MO-141BA, and all timing parameters-including tWP (100 ns), tDS (100 ns), and tBP (10–50 µs)-align with industry-standard Flash programming practices, ensuring compatibility with mainstream universal programmers and in-circuit debuggers.
AT49F8192AT-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:
- 8Mbit
- Memory Organization:
- 1M x 8, 512K 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
AT49F8192AT-70TC FAQ
1.How can I place an order for AT49F8192AT-70TC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49F8192AT-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 AT49F8192AT-70TC reliable?
The price and inventory of AT49F8192AT-70TC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49F8192AT-70TC is usually 5 days.
3.What payment methods are accepted for AT49F8192AT-70TC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49F8192AT-70TC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49F8192AT-70TC?
AT49F8192AT-70TC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49F8192AT-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 AT49F8192AT-70TC?
For technical support, including AT49F8192AT-70TC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49F8192AT-70TC requirements.
6.How does Aetrix verify that AT49F8192AT-70TC is sourced from the original manufacturer or authorized distributors?
All AT49F8192AT-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 AT49F8192AT-70TC meets industry standards.
7.What is the process for return or replacement of AT49F8192AT-70TC?
All AT49F8192AT-70TC units undergo pre-shipment inspection (PSI). If there is an issue with AT49F8192AT-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 AT49F8192AT-70TC part is unused and in its original packaging.
Return procedure for AT49F8192AT-70TC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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