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Microchip Technology AT49BV8192A-90TC
- Part No.:
- AT49BV8192A-90TC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
AT49BV8192A-90TC.pdf
- Description:
- IC FLASH 8MBIT PARALLEL 48TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,296
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Product details
Overview
AT49BV8192A-90TC from Atmel is an 8-megabit (512K × 16 or 1M × 8) single-voltage Flash memory IC with 90 ns read access time, organized in four sector blocks (8K-word boot block, two 4K-word parameter blocks, and 496K-word main array), supporting byte/word programming and hardware data protection for embedded firmware storage.
For engineers reviewing the AT49BV8192A-90TC datasheet, AT49BV8192A-90TC pinout, AT49BV8192A-90TC application, or AT49BV8192A-90TC equivalent, this device serves as a drop-in replacement for legacy 3V Flash in boot code, parameter storage, and firmware update subsystems requiring sector-level erase control, CMOS standby current under 50 µA, and 10,000 write cycles.
Technical Context
The AT49BV8192A-90TC implements a command-register-based architecture with internal erase/program control, eliminating external high-voltage programming requirements. It supports both byte (I/O0–I/O7 active, A-1 on I/O15) and word (I/O0–I/O15 active) modes via the BYTE pin, and uses standard CE/OE/WE timing compatible with microprocessor buses.
Its sector architecture enables selective erasure: boot block (00000H–01FFFH), two parameter blocks (02000H–02FFFH and 03000H–03FFFH), and main memory (04000H–7FFFFH). Erase operations are internally timed - chip erase completes in ≤10 seconds, sector erase in same duration - with Data Polling (I/O7 complement) and Toggle Bit (I/O6) for cycle completion detection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 8 Mbit (512K × 16 or 1M × 8 organization) |
| Read Access Time | 90 ns - enables direct execution from Flash in 20 MHz+ bus systems without wait states |
| Supply Voltage | 2.7 V to 3.6 V - supports single-supply operation in battery-backed or low-power embedded systems |
| Active Current | 25 mA at 5 MHz - defines power budget for active firmware reads during system boot or runtime |
| Standby Current | 50 µA CMOS - ensures ultra-low quiescent draw during sleep or idle states |
| Erase/Program Cycles | 10,000 minimum - guarantees field-upgrade durability for industrial firmware deployments |
| Sector Erase Time | ≤10 seconds - allows predictable, bounded firmware update windows without blocking host CPU |
Pinout & Package
AT49BV8192A-90TC is packaged in a 48-lead TSOP (Type 1, 48T), 12 mm × 20 mm body, 0.5 mm lead pitch, RoHS-compliant plastic package with gull-wing leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A18 | Address Inputs | 19-bit address bus supporting full 512K-word addressing; A-1 appears on I/O15 in byte mode |
| I/O0–I/O15 | Data I/O (Word Mode) | 16-bit bidirectional data bus when BYTE = logic "1" or open; I/O15 repurposed as LSB address (A-1) in byte mode |
| I/O0–I/O7 | Data I/O (Byte Mode) | 8-bit data path activated when BYTE = logic "0"; I/O8–I/O14 tri-stated |
| 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 drive; dual-line control prevents bus contention |
| WE | Write Enable | Active-low write strobe; latches command sequences and initiates program/erase cycles |
| BYTE | Mode Select | Configures interface width: logic "1"/open = 16-bit word mode; logic "0" = 8-bit byte mode |
| RESET | Reset Input | Halts ongoing operations and forces high-impedance outputs; 12 V override enables boot block reprogramming |
| VPP | Programming Voltage | No-connect pin - functionally inert; may be tied to VCC, GND, 5 V, or left floating |
| NC | No Connect | Unbonded pins (e.g., pins 9, 10, 14, 15, 32, 33, 34, 35, 36, 41, 42, 43); must not be routed |
Key Features
| Feature | Design Value |
|---|---|
| Boot Block Programming Lockout | Hardware-enforced write protection for 8K-word boot sector (00000H–01FFFH), preventing accidental corruption of bootloader code |
| Internal Command Execution | Eliminates need for external high-voltage generators - all erase/program operations executed autonomously after 4–6 bus-cycle command sequences |
| Data Polling & Toggle Bit | Dual asynchronous status reporting: I/O7 complement indicates program completion; I/O6 toggling signals active erase/program state |
| Hardware Data Protection | VCC sense (<1.8 V inhibits programming), 10 ms power-on delay, noise filtering (<15 ns pulse rejection), and control-line gating prevent spurious writes |
| Flexible Bus Interface | Supports both 8-bit and 16-bit microprocessor buses via single BYTE pin; no PCB redesign needed when migrating between data widths |
Applications
| Industrial PLC Firmware Storage | Medical Device Bootloader Memory |
|---|---|
|
Use Scenario: Storing certified bootloader and safety-critical firmware in programmable logic controllers with periodic field updates. IC Role / Device Role / Timing Role: Nonvolatile boot memory holding secure startup code, accessed during cold reset with deterministic 90 ns read latency. Use Value: Boot block lockout ensures bootloader integrity across 10,000+ field updates; sector erase enables safe parameter + application firmware patching without full chip reflash. |
Use Scenario: Retaining FDA-approved boot code and calibration parameters in portable diagnostic equipment with battery backup. IC Role / Device Role / Timing Role: Low-power Flash memory providing <50 µA standby draw and 2.7–3.6 V operation compatible with Li-ion supply rails. Use Value: CMOS standby current extends battery life during idle; hardware reset override (12 V on RESET) permits emergency bootloader recovery in deployed units. |
| Automotive Infotainment System BIOS | Network Router Configuration Storage |
|
Use Scenario: Holding boot firmware and feature-enable keys in automotive head units operating across -40°C to +85°C. IC Role / Device Role / Timing Role: Industrial-grade Flash IC with guaranteed 90 ns access at temperature extremes, interfaced via 16-bit parallel bus. Use Value: Dual-parameter-block architecture isolates calibration data from application firmware, enabling independent updates without risking system stability. |
Use Scenario: Storing configuration profiles, MAC tables, and failover scripts in enterprise-grade Ethernet switches. IC Role / Device Role / Timing Role: Sector-erasable nonvolatile memory supporting atomic write of configuration subsets using dedicated parameter blocks. Use Value: 4K-word parameter blocks allow rapid, low-risk config reloads; hardware data protection prevents corruption during brown-out or hot-swap events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SST39VF800A-90-4C-EKE | 8 Mbit, 90 ns, 3.0–3.6 V; lacks boot block lockout and RESET-based override; uses different command set | Requires software-managed protection; unsuitable where hardware-enforced bootloader integrity is mandated | Select when cost sensitivity outweighs need for hardware boot lockout and 12 V recovery capability |
| MX29LV800CTTI-90G | 8 Mbit, 90 ns, 3.0–3.6 V; top-boot configuration only; no BYTE pin - fixed 16-bit interface | Cannot support 8-bit bus systems; boot block located at F0000H–FFFFFH, incompatible with AT49BV8192A's bottom-boot layout | Choose only for designs already committed to top-boot architecture and 16-bit-only data paths |
Compared with SST39VF800A-90-4C-EKE and MX29LV800CTTI-90G, the AT49BV8192A-90TC uniquely delivers bottom-boot sector protection with hardware lockout enable/disable, BYTE-pin configurable bus width, and 12 V RESET override - critical for safety-certified and mixed-bus embedded systems.
Availability
AT49BV8192A-90TC is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device bootloader memory, automotive infotainment BIOS, and network router configuration storage requiring stable component supply and long-term lifecycle support.
Supply support for AT49BV8192A-90TC 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 ICs for industrial, automotive, and consumer applications.
The AT49BV8192A product line delivers single-voltage, sector-erasable Flash memory optimized for embedded systems requiring reliable firmware storage, field-upgradable code, and hardware-enforced boot integrity in harsh environments.
FAQ
What is the memory organization of the AT49BV8192A-90TC?
The AT49BV8192A-90TC is organized as 512K words × 16 bits or 1M bytes × 8 bits. Its physical address space spans 00000H to 7FFFFH (512K words), partitioned into one 8K-word boot block (00000H–01FFFH), two 4K-word parameter blocks (02000H–02FFFH and 03000H–03FFFH), and a 496K-word main memory array (04000H–7FFFFH). This structure is confirmed in the device block diagram and sector address definitions.
Does the AT49BV8192A-90TC require external high voltage for programming?
No, the AT49BV8192A-90TC does not require external high voltage for programming. It operates from a single 2.7–3.6 V supply and executes all erase and program functions internally using command sequences. The VPP pin is functionally inert and may be left unconnected, tied to VCC, GND, or 5 V without affecting operation - a key design advantage over older Flash devices.
How is the BYTE pin used on the AT49BV8192A-90TC?
The BYTE pin on the AT49BV8192A-90TC selects interface width: logic "1" or open configures the device for 16-bit word mode (I/O0–I/O15 active); logic "0" enables 8-bit byte mode (I/O0–I/O7 active, I/O8–I/O14 tri-stated, I/O15 repurposed as A-1 address input). This flexibility allows the same AT49BV8192A-90TC to serve both 8-bit and 16-bit microprocessor buses without hardware change.
What is the purpose of the RESET pin on the AT49BV8192A-90TC?
The RESET pin on the AT49BV8192A-90TC halts ongoing operations and places outputs in high-impedance state when pulled low. Critically, applying 12.0 V ± 0.5 V to RESET overrides the boot block programming lockout, enabling reprogramming of protected sectors even after lockout activation - a vital recovery mechanism for deployed AT49BV8192A-90TC systems.
How does the AT49BV8192A-90TC indicate completion of a program or erase cycle?
The AT49BV8192A-90TC provides three concurrent status mechanisms: Data Polling (I/O7 returns complement of written data until completion, then true data), Toggle Bit (I/O6 toggles during operation, stops when complete), and - on compatible variants - RDY/BUSY output. For AT49BV8192A-90TC in TSOP package, Data Polling and Toggle Bit are the primary, pin-compatible methods confirmed in the AC characteristics table.
AT49BV8192A-90TC 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:
- 30µs
- Access Time:
- 90 ns
- Voltage - Supply:
- 2.7V ~ 3.6V
- Operating Temperature:
- 0°C ~ 70°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TSOP
AT49BV8192A-90TC FAQ
1.How can I place an order for AT49BV8192A-90TC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49BV8192A-90TC 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 AT49BV8192A-90TC reliable?
The price and inventory of AT49BV8192A-90TC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49BV8192A-90TC is usually 5 days.
3.What payment methods are accepted for AT49BV8192A-90TC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49BV8192A-90TC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49BV8192A-90TC?
AT49BV8192A-90TC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49BV8192A-90TC 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 AT49BV8192A-90TC?
For technical support, including AT49BV8192A-90TC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49BV8192A-90TC requirements.
6.How does Aetrix verify that AT49BV8192A-90TC is sourced from the original manufacturer or authorized distributors?
All AT49BV8192A-90TC 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 AT49BV8192A-90TC meets industry standards.
7.What is the process for return or replacement of AT49BV8192A-90TC?
All AT49BV8192A-90TC units undergo pre-shipment inspection (PSI). If there is an issue with AT49BV8192A-90TC, 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 AT49BV8192A-90TC part is unused and in its original packaging.
Return procedure for AT49BV8192A-90TC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT49BV8192A-90TC Tags
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