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Microchip Technology AT49BV512-12TI
- Part No.:
- AT49BV512-12TI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
AT49BV512-12TI.pdf
- Description:
- IC FLASH 512KBIT PARALLEL 32TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,822
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Product details
Overview
AT49BV512-12TI from Atmel is a 512 Kbit (64K × 8) single-supply 3V-only Flash memory IC with 120 ns read access time, 8K-byte boot block featuring hardware lockout, and byte-programmable architecture for embedded firmware storage in industrial temperature-range applications.
For engineers reviewing the AT49BV512-12TI datasheet, AT49BV512-12TI pinout, AT49BV512-12TI application, or AT49BV512-12TI equivalent, this page delivers verified timing specs, boot-sector protection behavior, industrial-grade (-40°C to +85°C) operation, TSOP/VSOP package compatibility, and real-world erase/program cycle constraints for reliable system-level integration.
Technical Context
The AT49BV512-12TI implements a CMOS-based NOR Flash architecture with internal command register control, supporting software-controlled chip erase via six-byte command sequences and byte-by-byte programming without external high-voltage inputs. It uses standard EPROM-like read protocol with dual-line CE/OE control for bus contention avoidance.
Its memory array is partitioned into a main 56K-byte region and an optional 8K-byte boot block (0000H–1FFFH), where lockout activation permanently disables erase and program operations in that sector. Data polling (I/O7 complement) and toggle-bit (I/O6) mechanisms provide asynchronous end-of-cycle detection during programming and erasure.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 512 Kbit (64K × 8), directly addressable as 65,536 bytes |
| Read Access Time | 120 ns max - determines minimum CPU wait-state requirement for zero-wait-state interface at ≤8.3 MHz |
| Supply Voltage | 2.7 V to 3.6 V - enables direct connection to 3.3 V logic rails without level-shifting |
| Active Current | 25 mA typical - defines peak power draw during read bursts; requires local decoupling ≥1 µF |
| Standby Current | 50 µA CMOS - supports low-power sleep modes in battery-backed or portable systems |
| Erase Cycle Time | 10 seconds max - sets worst-case firmware update latency for full-chip reprogramming |
| Byte Programming Time | 30 µs typical - enables incremental patching of code/data without blocking system execution for >33 kB/s effective write throughput |
| Endurance | 10,000 write/erase cycles - qualifies for field-upgradable firmware with multi-year service life under moderate update frequency |
Pinout & Package
AT49BV512-12TI is available in 32-lead TSOP (8 × 20 mm, Type I) and VSOP (8 × 14 mm) packages. Both are surface-mount, lead-free compatible, and conform to JEDEC MO-142 standards. Pin 1 identifier is marked by a beveled corner or notch on the package body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A15 | Address Inputs | 16-bit address bus; latched on falling edge of WE or CE (whichever occurs last) for read/write targeting |
| I/O0–I/O7 | Bidirectional Data Bus | Tri-state CMOS I/O; outputs valid after tOE delay during read; inputs sampled on rising edge of WE/CE during programming |
| CE | Chip Enable | Active-low device select; must be low for any memory access; high-Z output when asserted high |
| OE | Output Enable | Active-low output gate; controls data bus drive; used with CE to prevent bus contention during partial decode |
| WE | Write Enable | Active-low write strobe; initiates command loading or byte programming; inhibits writes if held high |
| VCC | Power Supply | 2.7–3.6 V supply input; internal voltage sensing disables programming if <1.8 V |
| GND | Ground Reference | Signal and power return; requires low-inductance connection to minimize noise coupling during erase pulses |
| NC | No Connect | Unbonded pins in TSOP/VSOP packages; must remain floating - no external connection permitted |
Key Features
| Feature | Design Value |
|---|---|
| Single 3V Supply Operation | Eliminates need for 5V or 12V programming voltages - simplifies power architecture and reduces BOM count |
| Boot Block Lockout | Hardware-enforced write protection for 8K-byte sector (0000H–1FFFH) - ensures bootloader integrity across firmware updates |
| Data Polling & Toggle Bit | Dual asynchronous status reporting (I/O7 complement / I/O6 toggle) - enables interrupt-driven programming without fixed delays |
| Hardware Data Protection | VCC sense, noise filtering (<15 ns pulse rejection), and control-line inhibition - prevents spurious writes in electrically noisy environments |
| Industrial Temperature Range | -40°C to +85°C operation - validated for deployment in motor drives, PLCs, and outdoor telemetry equipment |
Applications
| Industrial PLC Firmware Storage | Medical Device Bootloader Memory |
|---|---|
Use Scenario: Storing firmware images and configuration parameters in programmable logic controllers deployed in factory automation cabinets with ambient temperatures up to 85°C. IC Role / Device Role / Timing Role: Nonvolatile code storage with guaranteed 120 ns read access to support deterministic scan-cycle timing in real-time control loops. Use Value: Boot block lockout prevents accidental corruption of safety-critical startup routines during field firmware upgrades via HMI or Ethernet interface. |
Use Scenario: Holding certified bootloader and diagnostic code in Class II medical instruments requiring traceable, tamper-resistant firmware storage. IC Role / Device Role / Timing Role: Secure, low-power Flash memory enabling cold-start initialization within strict regulatory boot-time windows. Use Value: 50 µA standby current extends battery backup runtime; hardware lockout satisfies IEC 62304 software lifecycle requirements for immutable boot code. |
| Automotive Body Control Module | Point-of-Sale Terminal Configuration |
Use Scenario: Storing calibration tables and feature-enable bits in automotive BCMs operating across extended temperature ranges including engine bay proximity. IC Role / Device Role / Timing Role: Industrial-grade Flash providing robustness against thermal cycling and ESD transients per AEC-Q100 stress test profiles. Use Value: 10,000-cycle endurance supports lifetime recalibration events; 2.7–3.6 V operation tolerates vehicle battery voltage fluctuations during cranking. |
Use Scenario: Retaining localized language packs, tax rate tables, and merchant-specific settings in retail terminals subject to frequent software revisions. IC Role / Device Role / Timing Role: Field-upgradable nonvolatile memory interfaced directly to ARM Cortex-M microcontrollers via parallel bus. Use Value: Byte-programmability allows over-the-air patching of individual configuration fields without full image reflash - reducing update downtime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SST39VF512-70-4C-NHE | 70 ns access, 3.3 V only, same density and boot-block size but uses different command set and lacks toggle-bit detection | Requires modified driver firmware due to distinct erase/lockout command sequences; no hardware toggle-bit fallback for status monitoring | Preferred where faster read speed justifies driver rework and where SST's higher endurance (100K cycles) is critical |
| MX29LV512CTTI-12G | 120 ns access, 3.0 V core, supports CFI query mode and wider operating voltage (2.7–3.6 V), but boot block is fixed at top address range (FF000H–FFFFFH) | Boot sector location mismatch requires PCB layout or address decoding changes; CFI support eases auto-detection in generic flash programmers | Chosen when system requires standardized CFI interface or top-boot architecture aligns with existing memory map design |
Compared with SST39VF512-70-4C-NHE and MX29LV512CTTI-12G, the AT49BV512-12TI offers verified bottom-boot lockout with identical timing and voltage specs, making it optimal for legacy designs requiring drop-in replacement with unchanged boot vector handling and proven industrial reliability.
Availability
AT49BV512-12TI is available at Aetrix Electronics and suitable for industrial control systems, medical diagnostics equipment, and automotive body electronics requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AT49BV512-12TI 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, nonvolatile memory, and secure authentication ICs for industrial, automotive, and consumer applications.
The AT49BV512-12TI belongs to Atmel's Battery-Voltage™ Flash memory product line, designed specifically for low-voltage, in-system reprogrammable code storage in resource-constrained embedded systems with stringent power and reliability requirements.
FAQ
What is the operating temperature range for the AT49BV512-12TI?
The AT49BV512-12TI is rated for industrial operation from -40°C to +85°C. This specification is validated per the DC and AC operating conditions table in the official Atmel datasheet (Rev. 1026E), and applies to all electrical parameters including read access time, active current, and erase/program endurance. The "I" suffix in the part number explicitly denotes industrial temperature grade.
Does the AT49BV512-12TI require external high-voltage programming signals?
No, the AT49BV512-12TI operates exclusively from a single 2.7–3.6 V supply for both read and write operations. Programming is controlled entirely through standard 3V logic-level command sequences written to specific address locations - no external 5V, 12V, or VPP signals are needed. This eliminates high-voltage generator circuitry and simplifies system design.
How is boot block lockout enabled on the AT49BV512-12TI?
Boot block lockout on the AT49BV512-12TI is enabled by executing a precise six-byte software command sequence: load 0xAA to address 0x5555, then 0x55 to 0x2AAA, then 0x80 to 0x5555, then 0xAA to 0x5555, then 0x55 to 0x2AAA, and finally 0x40 to 0x5555. Once activated, the 8K-byte sector (0000H–1FFFH) becomes permanently read-only - no further erase or program commands affect it.
Can the AT49BV512-12TI be used in a 5V system interface?
The AT49BV512-12TI's address and control inputs (A0–A15, CE, OE, WE) tolerate 0–5.5 V logic levels even when powered from 2.7–3.6 V, enabling safe interfacing with 5V microcontrollers without level shifters. However, I/O lines are limited to 0–(VCC + 0.6 V); connecting them directly to 5V buses will damage the device. External level translation is required for bidirectional data lines.
What methods does the AT49BV512-12TI provide to detect completion of a program or erase cycle?
The AT49BV512-12TI provides two hardware-verified methods: (1) Data Polling - reading the programmed byte returns its complement on I/O7 until completion, then true data; (2) Toggle Bit - I/O6 toggles between 0 and 1 during active programming/erasure and stabilizes upon completion. Both methods are usable at any time during the cycle and eliminate need for fixed timeout delays in firmware.
AT49BV512-12TI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 32-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:
- 512Kbit
- Memory Organization:
- 64K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 30µs
- Access Time:
- 120 ns
- Voltage - Supply:
- 2.7V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-TSOP
AT49BV512-12TI FAQ
1.How can I place an order for AT49BV512-12TI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49BV512-12TI 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 AT49BV512-12TI reliable?
The price and inventory of AT49BV512-12TI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49BV512-12TI is usually 5 days.
3.What payment methods are accepted for AT49BV512-12TI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49BV512-12TI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49BV512-12TI?
AT49BV512-12TI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49BV512-12TI 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 AT49BV512-12TI?
For technical support, including AT49BV512-12TI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49BV512-12TI requirements.
6.How does Aetrix verify that AT49BV512-12TI is sourced from the original manufacturer or authorized distributors?
All AT49BV512-12TI 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 AT49BV512-12TI meets industry standards.
7.What is the process for return or replacement of AT49BV512-12TI?
All AT49BV512-12TI units undergo pre-shipment inspection (PSI). If there is an issue with AT49BV512-12TI, 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 AT49BV512-12TI part is unused and in its original packaging.
Return procedure for AT49BV512-12TI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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