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Microchip Technology AT29LV512-12TC
- Part No.:
- AT29LV512-12TC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
AT29LV512-12TC.pdf
- Description:
- IC FLASH 512KBIT PARALLEL 32TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,676
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Product details
Overview
AT29LV512-12TC from Atmel is a 512 Kbit (64K × 8) 3.3V-only Flash memory IC with 120 ns read access time, 15 mA active current, and 40 µA CMOS standby current. It features sector-based programming (512 sectors × 128 bytes), software data protection, and DATA polling for program completion detection. Used in embedded firmware storage, BIOS/UEFI code retention, and industrial controller boot memory.
For engineers reviewing the AT29LV512-12TC datasheet, AT29LV512-12TC pinout, AT29LV512-12TC application, or AT29LV512-12TC equivalent, key selection criteria include 3.3V-only operation, TSOP-32 package compatibility, sector-erase reprogrammability, and commercial temperature range (0°C to 70°C) support.
Technical Context
The AT29LV512-12TC implements a sector-erase Flash architecture with internal address/data latches for 128-byte loads and automatic erase-before-program sequencing. Its software data protection requires a three-byte command sequence (AAh→55h→A0h at specific addresses) to enable programming, preventing inadvertent writes during power transitions or noise events.
Operation relies on dual-line chip enable (CE) and output enable (OE) control for bus contention avoidance, TTL/CMOS-compatible I/O levels, and hardware safeguards including VCC sense (<1.8V inhibition), 10 ms power-on delay, and 15 ns noise filtering on WE/CE inputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 512 Kbit (64K × 8) - supports full firmware images up to 64 KB in size |
| Read Access Time | 120 ns - enables direct execution from flash in 8-bit microcontroller systems |
| VCC Supply Range | 3.0 V to 3.6 V - compatible with standard 3.3V logic rails without level shifting |
| Active Current | 15 mA - limits thermal load in compact industrial modules |
| Standby Current | 40 µA - extends battery life in low-power wake-on-event designs |
| Sector Size | 128 bytes × 512 sectors - allows fine-grained firmware updates without full chip erase |
| Endurance | >10,000 write/erase cycles per sector - supports field-upgradable firmware over product lifetime |
Pinout & Package
AT29LV512-12TC uses a 32-lead Thin Small Outline Package (TSOP Type I, 8 mm × 20 mm, JEDEC MO-142 BD), pin-compatible with industry-standard 32-pin Flash memory footprints.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A15 | Address Inputs | 16-bit address bus for full 64K-word addressing; A0–A6 select byte within 128-byte sector |
| I/O0–I/O7 | Bidirectional Data Bus | 8-bit parallel interface; supports byte-load programming and true read/write data transfer |
| CE | Chip Enable | Active-low chip select; must be low for read or program operations; inhibits programming if held high |
| OE | Output Enable | Active-low output control; places I/O pins in high-impedance state when high to prevent bus contention |
| WE | Write Enable | Active-low write strobe; initiates byte loading during sector programming; inhibits programming if held high |
| VCC | Power Supply | 3.3V ±0.3V supply; powers core logic and I/O buffers; includes VCC sense circuitry for programming safety |
| GND | Ground Reference | Signal and power return path; decoupling required within 10 mm of VCC pin per datasheet layout guidelines |
| NC | No Connect | Two unconnected pins (pins 6 and 9 in TSOP top view); must remain floating - no external connection allowed |
Key Features
| Feature | Design Value |
|---|---|
| Software Data Protection | Three-byte unlock sequence (AAh/55h/A0h) required before each sector program - prevents accidental firmware corruption during debug or brown-out |
| DATA Polling (I/O7) | Complement of loaded data appears on I/O7 during programming - enables host MCU to poll for completion without timers or interrupts |
| Toggle Bit Detection (I/O6) | I/O6 toggles between 0/1 during program/erase - provides alternate asynchronous status monitoring independent of I/O7 |
| Single-Cycle Sector Erase & Program | Entire 128-byte sector erased and programmed in ≤20 ms - eliminates separate erase step and reduces update latency |
| Hardware Programming Safeguards | VCC sense, 10 ms power-on delay, and 15 ns input noise filtering - ensures reliable operation in electrically noisy industrial environments |
Applications
| Industrial PLC Firmware Storage | Embedded Network Router Boot Code |
|---|---|
Use Scenario: Storing firmware and configuration data in programmable logic controllers operating in factory-floor environments with wide temperature swings and EMI. IC Role / Device Role / Timing Role: Nonvolatile boot memory holding real-time OS kernel and ladder logic interpreter; accessed at system power-up and during field firmware updates. Use Value: 40 µA standby current minimizes auxiliary power draw during PLC sleep modes; 10,000-cycle endurance supports quarterly firmware patches over 10+ year product life. | Use Scenario: Holding bootloader and minimal TCP/IP stack in residential and SMB network routers requiring secure, field-upgradable firmware. IC Role / Device Role / Timing Role: Primary boot device mapped to CPU reset vector; provides deterministic 120 ns read access for fast boot initialization. Use Value: Sector-based programming allows patching only compromised security modules without erasing full configuration partition; software protection prevents remote exploit-triggered reflash. |
| Medical Diagnostic Device Calibration Data | Automotive Body Control Module (BCM) Configuration |
Use Scenario: Retaining sensor calibration coefficients and regulatory compliance logs in portable ultrasound and ECG devices subject to strict data integrity requirements. IC Role / Device Role / Timing Role: Dedicated nonvolatile parameter store; accessed via SPI-to-parallel bridge or direct 8-bit bus interface during device self-test. Use Value: DATA polling and toggle bit provide redundant, deterministic program status feedback - critical for FDA-regulated write-verification workflows. | Use Scenario: Storing vehicle-specific configuration maps (e.g., door lock timing, lighting profiles) in automotive BCMs deployed across multiple trim levels. IC Role / Device Role / Timing Role: Field-programmable configuration memory; updated via CAN diagnostics during dealer service or OTA campaigns. Use Value: 3.3V-only operation matches modern BCM power domains; 128-byte sector granularity enables trim-level-specific map updates without disturbing base firmware. |
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 read access; 3.3V operation; same 512 Kbit density and TSOP-32 package | Higher speed but lower endurance (100K cycles vs. 10K); lacks hardware VCC sense protection | Choose for performance-critical boot paths where faster access justifies reduced long-term reliability margin |
| MX29LV512CTTI-12G | 120 ns read access; identical 512 Kbit × 8 organization; TSOP-32; supports same software unlock sequence | Extended industrial temp range (−40°C to +105°C); higher standby current (100 µA) | Choose for under-hood automotive or outdoor infrastructure deployments requiring extended temperature tolerance |
Compared with SST39VF512-70-4C-NHE and MX29LV512CTTI-12G, the AT29LV512-12TC offers balanced speed, proven 10K-cycle endurance, and robust hardware safeguards ideal for cost-sensitive industrial and medical applications where reliability outweighs peak performance.
Availability
AT29LV512-12TC is available at Aetrix Electronics and suitable for industrial PLC firmware storage, embedded network router boot code, and medical diagnostic device calibration data requiring stable component supply and long-term obsolescence management.
Supply support for AT29LV512-12TC 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 company specializing in microcontrollers, Flash memory, and secure authentication ICs for industrial, automotive, and consumer applications.
The AT29LV512 product line delivers 3.3V-only Flash memory optimized for in-system reprogrammability in space-constrained embedded systems requiring deterministic boot behavior and field firmware updates.
FAQ
What is the maximum operating temperature range for the AT29LV512-12TC?
The AT29LV512-12TC is rated for commercial temperature operation from 0°C to +70°C. This specification is defined in the Ordering Information table of the datasheet and applies specifically to the -12TC suffix variant. The industrial-grade counterpart (AT29LV512-12TI) supports −40°C to +85°C, but AT29LV512-12TC does not extend beyond the commercial range.
Does the AT29LV512-12TC require high-voltage programming signals?
No, the AT29LV512-12TC operates with 3.3V-only programming - no external high-voltage (e.g., 12V) supply is needed. Programming is enabled solely through the three-byte software unlock sequence (AAh at 5555h, 55h at 2AAAh, A0h at 5555h), after which standard 3.3V-level WE/CE pulses initiate sector programming. This eliminates HV charge pumps and simplifies system design.
How many sectors does the AT29LV512-12TC have, and what is the sector size?
The AT29LV512-12TC contains exactly 512 sectors, each 128 bytes in size. This is confirmed in the Features section ("512 Sectors (128 Bytes/Sector)") and the Description ("Sector Program Operation"). The sector address is selected using address lines A7–A15, while A0–A6 select the byte offset within the sector.
Can the AT29LV512-12TC be used in a 5V system?
No, the AT29LV512-12TC is strictly a 3.3V-only device. Its VCC must be maintained between 3.0V and 3.6V. While input pins (A0–A15, CE, OE, WE) tolerate up to 5.5V per the "INPUT LEVELS" section, the I/O pins (I/O0–I/O7) are limited to 0–3.6V, and internal logic requires 3.3V operation. Using it with 5V I/O risks damage or undefined behavior.
What methods are available to detect the end of a program cycle on the AT29LV512-12TC?
The AT29LV512-12TC provides two hardware-supported methods: DATA polling on I/O7 (complement of loaded data appears during programming, true data returns on completion) and Toggle Bit detection on I/O6 (toggles between 0 and 1 during programming, stabilizes when complete). Both are specified in the "DATA POLLING" and "TOGGLE BIT" sections and require no additional hardware.
AT29LV512-12TC 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:
- 20ms
- Access Time:
- 120 ns
- Voltage - Supply:
- 3V ~ 3.6V
- Operating Temperature:
- 0°C ~ 70°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-TSOP
AT29LV512-12TC FAQ
1.How can I place an order for AT29LV512-12TC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT29LV512-12TC 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 AT29LV512-12TC reliable?
The price and inventory of AT29LV512-12TC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT29LV512-12TC is usually 5 days.
3.What payment methods are accepted for AT29LV512-12TC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT29LV512-12TC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT29LV512-12TC?
AT29LV512-12TC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT29LV512-12TC 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 AT29LV512-12TC?
For technical support, including AT29LV512-12TC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT29LV512-12TC requirements.
6.How does Aetrix verify that AT29LV512-12TC is sourced from the original manufacturer or authorized distributors?
All AT29LV512-12TC 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 AT29LV512-12TC meets industry standards.
7.What is the process for return or replacement of AT29LV512-12TC?
All AT29LV512-12TC units undergo pre-shipment inspection (PSI). If there is an issue with AT29LV512-12TC, 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 AT29LV512-12TC part is unused and in its original packaging.
Return procedure for AT29LV512-12TC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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