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Microchip Technology AT49F8192AT-70RC
- Part No.:
- AT49F8192AT-70RC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 44-SOIC (0.525", 13.34mm Width)
- Datasheet:
-
AT49F8192AT-70RC.pdf
- Description:
- IC FLASH 8MBIT PARALLEL 44SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,970
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Product details
Overview
AT49F8192AT-70RC from Atmel is an 8-Mbit (512K × 16 or 1M × 8) top-boot flash memory IC operating at 5 V, featuring 70 ns read access time, sector-based erase architecture (8K-word boot block + two 4K-word parameter blocks + 496K-word main array), 10 µs typical byte/word programming, and hardware data protection including VCC sense and noise filtering.
For engineers reviewing the AT49F8192AT-70RC datasheet, AT49F8192AT-70RC pinout, AT49F8192AT-70RC application, or AT49F8192AT-70RC equivalent, this device serves as a drop-in replacement for legacy 5 V flash in embedded boot code storage, firmware update partitions, and industrial control program memory where top-boot configuration and in-system reprogrammability are required.
Technical Context
The AT49F8192AT-70RC implements a command-register-based architecture with JEDEC-standard software command sequences (e.g., 6-cycle sector erase, 4-cycle word programming) executed via CE/OE/WE control lines. Its top-boot configuration places the protected 8K-word boot block at address range 7E000H–7FFFFH, distinct from bottom-boot variants.
It supports dual bus modes: word mode (I/O0–I/O15 active when BYTE = high/open) and byte mode (I/O0–I/O7 active, I/O15 repurposed as A−1 LSB address input when BYTE = low). Erase and program operations are internally timed with no external clock required, and DATA polling (I/O7 complement) or toggle bit (I/O6) provides cycle completion detection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 8 Mbit (512K × 16 or 1M × 8); enables compact firmware storage without external data width conversion logic |
| Read Access Time | 70 ns max; meets timing requirements for 14 MHz bus interfaces in microcontroller-based systems |
| Programming Time | 10 µs typical per byte/word; allows rapid field updates of small code segments without system stall |
| Sector Erase Time | 10 seconds typical; enables selective reprogramming of parameter blocks while preserving boot code integrity |
| Endurance | 10,000 write/erase cycles; supports long-term field firmware revision management in industrial controllers |
| Standby Current | 300 µA CMOS; minimizes quiescent power in battery-backed or energy-sensitive applications |
| Operating Voltage | 5 V ±10%; compatible with legacy 5 V logic families and eliminates need for level-shifting circuitry |
Pinout & Package
AT49F8192AT-70RC is packaged in a 44-lead SOIC (44R) with gull-wing leads, 0.525" wide body, and standard 0.050" pitch. Pin 1 marked by white dot.
| 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 to prevent bus contention |
| OE | Output Enable | Active-low output gate; controls data bus drive only when CE is also low; enables shared-bus arbitration |
| WE | Write Enable | Active-low write strobe; latches address/data during command sequences and initiates internal program/erase cycles |
| BYTE | Bus Width Select | High/open = 16-bit word mode (I/O0–I/O15 active); low = 8-bit byte mode (I/O0–I/O7 active, I/O15 = A−1) |
| I/O0–I/O15 | Data I/O | Bidirectional data bus; direction controlled by WE/CE/OE states; tri-stated when CE or OE high |
| RESET | Reset Input | Active-high reset; halts ongoing operations and forces high-impedance outputs; 12 V override enables boot block reprogramming |
| VCC / GND | Power Supply | Single 5 V supply; CMOS-compatible standby current ensures low-power retention during idle periods |
Key Features
| Feature | Design Value |
|---|---|
| Top-boot sector architecture | Boot block located at highest addresses (7E000H–7FFFFH), enabling secure bootloader storage independent of application firmware updates |
| Hardware boot block lockout | Command-enabled write protection prevents accidental overwrite of boot code; override possible via 12 V RESET signal |
| Software command interface | No external high-voltage programming required; all erase/program functions initiated via standard 5 V bus cycles using JEDEC-compliant sequences |
| DATA polling & toggle bit | Real-time operation status feedback via I/O7 complement or I/O6 toggling-eliminates need for fixed delay timers in host firmware |
| Hardware data protection | VCC sense (<3.8 V inhibits programming), 10 ms power-on delay, noise filtering (<15 ns pulse rejection), and control-line interlock prevent spurious writes |
Applications
| Industrial PLC Firmware Storage | Embedded Bootloader Memory |
|---|---|
|
Use Scenario: Storing firmware images and configuration parameters in programmable logic controllers deployed in factory automation environments. IC Role / Device Role / Timing Role: Nonvolatile program memory providing fast 70 ns read access for real-time instruction fetch and sector-erasable storage for field-upgradable logic programs. Use Value: Top-boot architecture isolates bootloader from application updates; 10,000-cycle endurance supports decades of maintenance revisions without hardware replacement. |
Use Scenario: Hosting secure startup code in microcontroller-based medical devices requiring certified boot integrity and post-deployment firmware patches. IC Role / Device Role / Timing Role: Trusted boot memory with hardware-enforced write protection on the 8K-word top-boot sector, accessed via standard parallel bus during cold start. Use Value: Boot block lockout prevents corruption during over-the-air updates; 300 µA standby current extends battery life in portable diagnostic instruments. |
| Telecom Base Station Parameter Storage | Automotive ECU Calibration Data |
|
Use Scenario: Retaining RF calibration tables and operational profiles across power cycles in wireless infrastructure equipment operating in extended temperature ranges. IC Role / Device Role / Timing Role: Parameter block memory (two 4K-word sectors) storing volatile-tuned settings, erased/reprogrammed independently of main firmware. Use Value: Sector-erase granularity avoids full chip reprogramming; industrial-grade −40°C to +85°C operation ensures reliability in outdoor base station cabinets. |
Use Scenario: Holding engine calibration maps and emission control parameters in automotive electronic control units subject to rigorous AEC-Q100 stress testing. IC Role / Device Role / Timing Role: High-reliability nonvolatile storage with hardware VCC monitoring and noise immunity, interfaced directly to MCU parallel bus without glue logic. Use Value: 5 V operation matches legacy automotive MCU voltage domains; 10 µs programming enables fast recalibration during service mode diagnostics. |
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 configuration; lacks RESET pin and 12 V override capability | Requires redesign of boot address mapping and lockout strategy; not suitable for top-boot-dependent systems | Select only if board layout already uses bottom-boot addressing and no 12 V override is needed for field recovery |
| MX29LV800CTTI-70G | 8 Mbit, 70 ns, top-boot; includes RY/BY# pin instead of RDY/BUSY; different command set (AMD-style vs JEDEC) | Requires firmware modification for command sequence handling and status polling logic | Choose when migrating from AMD-compatible platforms and RDY/BUSY line sharing is unnecessary |
Compared with SST39VF800A-70-4C-EKE and MX29LV800CTTI-70G, the AT49F8192AT-70RC offers unique top-boot security with hardware-reset override, JEDEC command compatibility, and integrated RDY/BUSY signaling-making it optimal for systems requiring robust, field-serviceable boot code integrity.
Availability
AT49F8192AT-70RC is available at Aetrix Electronics and suitable for industrial PLC firmware storage, embedded bootloader memory, telecom parameter retention, and automotive ECU calibration data requiring stable component supply and long-term lifecycle support.
Supply support for AT49F8192AT-70RC 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, nonvolatile memory, and secure authentication ICs for industrial, automotive, and consumer applications.
The AT49F8192AT-70RC belongs to Atmel's parallel-interface flash memory product line, designed specifically for reliable, in-system reprogrammable code and data storage in resource-constrained embedded systems with 5 V infrastructure.
FAQ
What is the boot block location and size for AT49F8192AT-70RC?
The AT49F8192AT-70RC features a top-boot configuration with an 8K-word (16K-byte) boot block located at address range 7E000H to 7FFFFH. This placement isolates critical startup code from application firmware updates. The boot block supports optional hardware programming lockout, which-once enabled-prevents writes unless 12 V is applied to the RESET pin. This behavior is confirmed in the device's block diagram and command definition tables.
Does AT49F8192AT-70RC support both byte and word data bus modes?
Yes, AT49F8192AT-70RC supports configurable bus width via the BYTE pin. When BYTE is high or open, the device operates in 16-bit word mode with I/O0–I/O15 active. When BYTE is low, it switches to 8-bit byte mode: I/O0–I/O7 become active data lines, and I/O15 functions as the LSB address input (A−1). This dual-mode flexibility allows seamless integration with 8-bit or 16-bit microcontroller buses without external data-width translators.
How does hardware data protection work in AT49F8192AT-70RC?
AT49F8192AT-70RC implements four hardware safeguards: (1) VCC sense circuitry inhibits programming if supply drops below ~3.8 V; (2) automatic 10 ms power-on delay before accepting commands; (3) program inhibition if OE is low, CE is high, or WE is high; and (4) noise filtering rejecting input pulses shorter than 15 ns. These mechanisms collectively prevent unintended writes due to power instability, noise, or control-line glitches-critical for field-deployed systems.
What methods are available to detect end-of-program or end-of-erase in AT49F8192AT-70RC?
AT49F8192AT-70RC provides three hardware-supported status detection methods: (1) DATA polling-reading the last programmed byte returns its complement on I/O7 until completion; (2) Toggle Bit-monitoring I/O6 toggling state until it stabilizes; and (3) RDY/BUSY pin (pin 12 in TSOP/CBGA variants)-though AT49F8192AT-70RC in SOIC package omits this pin, relying solely on polling/toggle. All methods eliminate need for fixed timeout loops in host firmware.
Is AT49F8192AT-70RC pin-compatible with other members of the AT49F8192x family?
AT49F8192AT-70RC shares identical pinout and electrical characteristics with other AT49F8192AT variants (e.g., -70TC, -70CI) in the same SOIC (44R) package. However, it is not pin-compatible with AT49F8192A (bottom-boot) or AT49F008x series due to differing boot block address mapping and command interpretation-even though physical pin assignments match. Functional substitution requires firmware validation of boot sector addressing and lockout enable sequences.
AT49F8192AT-70RC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 44-SOIC (0.525", 13.34mm Width)
- Packaging:
- Tube
- 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:
- 44-SOIC
AT49F8192AT-70RC FAQ
1.How can I place an order for AT49F8192AT-70RC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49F8192AT-70RC 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-70RC reliable?
The price and inventory of AT49F8192AT-70RC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49F8192AT-70RC is usually 5 days.
3.What payment methods are accepted for AT49F8192AT-70RC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49F8192AT-70RC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49F8192AT-70RC?
AT49F8192AT-70RC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49F8192AT-70RC 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-70RC?
For technical support, including AT49F8192AT-70RC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49F8192AT-70RC requirements.
6.How does Aetrix verify that AT49F8192AT-70RC is sourced from the original manufacturer or authorized distributors?
All AT49F8192AT-70RC 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-70RC meets industry standards.
7.What is the process for return or replacement of AT49F8192AT-70RC?
All AT49F8192AT-70RC units undergo pre-shipment inspection (PSI). If there is an issue with AT49F8192AT-70RC, 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-70RC part is unused and in its original packaging.
Return procedure for AT49F8192AT-70RC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT49F8192AT-70RC Tags
-
M24C02-WMN6TP
STMicroelectronics
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AT24C02C-XHM-T
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AT21CS01-STUM10-T
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24LC01BT-I/OT
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M24C02-FMC6TG
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AT24CS02-SSHM-T
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93LC46BT-I/OT
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AT24C04C-SSHM-T
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24LC01BT-I/SN
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