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Microchip Technology AT49F8192A-90TI
- Part No.:
- AT49F8192A-90TI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
AT49F8192A-90TI.pdf
- Description:
- IC FLASH 8MBIT PARALLEL 48TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,778
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Product details
Overview
AT49F8192A-90TI from Atmel is an 8-megabit (512K × 16 or 1M × 8) single-voltage 5V Flash memory with 90 ns read access time, sector-based architecture including an 8K-word boot block with programming lockout, and 10 µs typical byte/word programming. It operates across -40°C to +85°C and supports in-system reprogrammability without high-voltage inputs, used for firmware storage and boot code retention in embedded controllers.
For engineers reviewing the AT49F8192A-90TI datasheet, AT49F8192A-90TI pinout, AT49F8192A-90TI application, or AT49F8192A-90TI equivalent, key selection criteria include boot-block protection behavior, TSOP-48 package compatibility, 5V-only operation, sector erase timing (10 s), and RDY/BUSY signaling via dedicated open-drain output.
Technical Context
The AT49F8192A-90TI implements a four-sector Flash architecture: one 8K-word boot block (00000H–01FFFH), two 4K-word parameter blocks, and one 496K-word main memory array. Sector erase and chip erase are executed via six-cycle command sequences using address/data latching on WE/CE edges.
It supports both byte (I/O0–I/O7 active, BYTE = 0) and word (I/O0–I/O15 active, BYTE = 1 or open) configurations. Hardware data protection includes VCC sense (<3.8 V inhibits programming), 10 ms power-on delay, noise filtering (<15 ns pulses ignored), and control-line inhibit (OE low / CE high / WE high).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 8 Mbit (512K × 16 or 1M × 8 organization) |
| Read Access Time | 90 ns - determines maximum bus clock rate for zero-wait-state reads |
| Programming Time | 10 µs typical per byte/word - enables fast field updates without external timing control |
| Sector Erase Time | 10 seconds - defines minimum latency for partial reprogramming of boot or parameter blocks |
| Active Current | 50 mA - sets power budget for active read/write cycles in 5V systems |
| Standby Current | 100 µA CMOS - enables low-power retention during system sleep modes |
| Endurance | 10,000 write/erase cycles - specifies usable lifetime under frequent firmware update scenarios |
Pinout & Package
AT49F8192A-90TI is housed in a 48-lead Plastic Thin Small Outline Package (TSOP, Type I, JEDEC MO-142 Variation DD), 12 mm × 20 mm body, 0.5 mm pitch, with pin 1 identifier marked by white dot. Pin 12 is RDY/BUSY (open-drain); pin 48 is VCC; pins 24 and 47 are GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A18 | Address Inputs | 19-bit address bus supporting full 512K-word addressing; A-1 function multiplexed on 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 independently of CE for bus contention avoidance |
| WE | Write Enable | Active-low write strobe; latches address/data during command sequences and programming cycles |
| RESET | Reset Input | High = normal operation; low = outputs tri-stated; 12 V pulse overrides boot block lockout |
| RDY/BUSY | Ready/Busy Output | Open-drain signal pulled low during internal program/erase; supports wired-OR multi-device monitoring |
| BYTE | Mode Select | Logic 0 = byte mode (I/O0–I/O7 active, I/O15 = A-1); logic 1 or open = word mode (I/O0–I/O15 active) |
| I/O0–I/O15 | Data I/O | Bidirectional data bus; direction and width controlled by BYTE, CE, and OE states |
Key Features
| Feature | Design Value |
|---|---|
| Boot Block Programming Lockout | Hardware-enforced write protection for 8K-word boot sector (00000H–01FFFH); enabled via 6-cycle command sequence |
| Data Polling & Toggle Bit | I/O7 complement indicates programming completion; I/O6 toggling signals ongoing erase/program - eliminates need for fixed timing delays |
| Single 5V Supply Operation | No external 12V or 12.5V required for programming or erase - simplifies power design and enables direct microcontroller interfacing |
| Sector Architecture | Four independent erasable sectors (boot + 2× parameter + main) - allows selective firmware updates without full chip erase |
| Hardware Data Protection | VCC sense, 10 ms power-on delay, noise filtering, and control-line inhibit prevent accidental writes during power transients or noise events |
Applications
| Industrial PLC Firmware Storage | Medical Device Boot Code Retention |
|---|---|
|
Use Scenario: Storing bootloader and safety-critical initialization routines in programmable logic controllers requiring field-upgradable firmware without compromising boot integrity. IC Role / Device Role / Timing Role: Nonvolatile boot memory with hardware-locked 8K-word sector; provides deterministic startup sequence timing via 90 ns read access. Use Value: Ensures uncorrupted boot execution after power loss or reset; sector erase allows parameter updates while preserving verified boot code. |
Use Scenario: Securing certified boot firmware in Class II medical devices where regulatory compliance mandates immutable startup code and traceable update history. IC Role / Device Role / Timing Role: Write-protected boot memory with 12 V RESET override for authorized reprogramming; supports audit-ready firmware versioning via software product ID. Use Value: Meets IEC 62304 requirements for safe boot integrity; lockout detection at address 00002H enables runtime verification of protection status. |
| Automotive Infotainment System Updates | Telecom Base Station Configuration |
|
Use Scenario: Hosting updatable application firmware and calibration tables in automotive head units operating across extended temperature ranges (-40°C to +85°C). IC Role / Device Role / Timing Role: High-reliability Flash memory with 10,000-cycle endurance; 90 ns access supports real-time UI rendering from local storage. Use Value: Enables over-the-air (OTA) firmware patches without hardware redesign; sector architecture isolates critical boot code from user-updatable modules. |
Use Scenario: Storing configuration profiles and protocol stacks in carrier-grade base station radios requiring rapid field reconfiguration without service interruption. IC Role / Device Role / Timing Role: Dual-mode (byte/word) Flash interface synchronized to FPGA or DSP bus; RDY/BUSY pin enables precise erase/program scheduling. Use Value: Reduces downtime during configuration changes; 10 s sector erase allows sub-second parameter reload versus full-chip erase. |
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, 3.3V core (5V tolerant I/O), 90 ns access, PLCC-44 package | Requires 3.3V supply; lacks dedicated RDY/BUSY pin; uses different command set | Select when migrating to lower-voltage systems and board layout accommodates PLCC footprint |
| MX29LV800CTTI-90G | 8 Mbit, 3.0–3.6V operation, 90 ns access, TSOP-48, top-boot configuration | 3.3V-only supply; top-boot sector (7E000H–7FFFFH); no 12V RESET override | Choose for cost-sensitive 3.3V designs where boot block location matches system address map |
Compared with SST39VF800A-90-4C-EKE and MX29LV800CTTI-90G, the AT49F8192A-90TI uniquely supports true 5V-only operation with hardware boot lockout override via 12V RESET, making it suitable for legacy 5V industrial and automotive platforms requiring guaranteed boot integrity and field reprogrammability.
Availability
AT49F8192A-90TI is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device boot code retention, automotive infotainment updates, and telecom base station configuration requiring stable component supply across extended temperature and long-lifecycle programs.
Supply support for AT49F8192A-90TI 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 nonvolatile memory, microcontrollers, and security ICs, with a legacy of robust Flash technology for industrial and automotive applications.
The AT49F8192A-90TI belongs to Atmel's 5V Flash memory family designed for embedded systems requiring reliable, in-system reprogrammable firmware storage with hardware-based boot protection and sector-level erase granularity.
FAQ
What is the boot block address range for AT49F8192A-90TI?
The AT49F8192A-90TI features a bottom-boot configuration with its 8K-word boot block located at address range 00000H to 01FFFH. This is confirmed in the device datasheet section "Boot Block Programming Lockout" and distinguishes it from the AT49F8192AT variant, which uses a top-boot layout. The AT49F8192A-90TI maintains this fixed address mapping regardless of BYTE pin state or operating mode.
Does AT49F8192A-90TI require high voltage for programming?
No, the AT49F8192A-90TI operates exclusively at 5V ±10% for both read and programming functions. It does not require external 12V or higher voltages for standard byte/word programming or sector erase. A 12V pulse on the RESET pin is only used to override the boot block programming lockout - not for routine programming - and is strictly optional for authorized reprogramming scenarios.
How is the RDY/BUSY function implemented on AT49F8192A-90TI?
The AT49F8192A-90TI dedicates pin 12 as an open-drain RDY/BUSY output that is actively pulled low during internal program or erase operations and released (high-impedance) upon completion. This allows multiple devices to share a single RDY/BUSY line via wired-OR connection, enabling synchronized status monitoring in multi-Flash systems without additional logic.
Can AT49F8192A-90TI operate in both byte and word modes?
Yes, the AT49F8192A-90TI supports configurable data width via the BYTE pin: when pulled low, it operates in byte mode (I/O0–I/O7 active, I/O15 repurposed as A-1 address input); when high or left open, it operates in word mode (I/O0–I/O15 active). This dual-mode capability allows flexible integration with 8-bit or 16-bit microprocessor buses without external glue logic.
What is the endurance rating and data retention of AT49F8192A-90TI?
The AT49F8192A-90TI is rated for a minimum of 10,000 program/erase cycles per sector and guarantees data retention of 20 years at 85°C or 100 years at 25°C. These values are specified in the "Features" and "DC Characteristics" sections of the official datasheet and reflect actual characterization results - not typical or best-case projections.
AT49F8192A-90TI 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:
- 90 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
AT49F8192A-90TI FAQ
1.How can I place an order for AT49F8192A-90TI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49F8192A-90TI 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 AT49F8192A-90TI reliable?
The price and inventory of AT49F8192A-90TI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49F8192A-90TI is usually 5 days.
3.What payment methods are accepted for AT49F8192A-90TI?
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AT49F8192A-90TI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49F8192A-90TI 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 AT49F8192A-90TI?
For technical support, including AT49F8192A-90TI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49F8192A-90TI requirements.
6.How does Aetrix verify that AT49F8192A-90TI is sourced from the original manufacturer or authorized distributors?
All AT49F8192A-90TI 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 AT49F8192A-90TI meets industry standards.
7.What is the process for return or replacement of AT49F8192A-90TI?
All AT49F8192A-90TI units undergo pre-shipment inspection (PSI). If there is an issue with AT49F8192A-90TI, 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 AT49F8192A-90TI part is unused and in its original packaging.
Return procedure for AT49F8192A-90TI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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