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Microchip Technology AT29LV512-12TI
- Part No.:
- AT29LV512-12TI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
AT29LV512-12TI.pdf
- Description:
- IC FLASH 512KBIT PARALLEL 32TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,380
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Product details
Overview
AT29LV512-12TI from Atmel is a 512 Kbit (64K × 8) 3.3V-only Flash memory IC with 120 ns read access time, sector-based reprogrammability (512 sectors × 128 bytes), and software data protection. It operates across industrial temperature range (−40°C to +85°C), draws 15 mA active current and 50 µA CMOS standby current, and supports in-system reprogramming without high-voltage programming signals - used in firmware storage for embedded controllers and industrial PLCs.
For engineers reviewing the AT29LV512-12TI datasheet, AT29LV512-12TI pinout, AT29LV512-12TI application, or AT29LV512-12TI equivalent, key selection considerations include its TSOP-32 industrial-grade packaging, sector erase architecture, DATA polling/Toggle Bit program status detection, and compatibility with 3.3V microprocessor buses requiring nonvolatile code/data retention.
Technical Context
The AT29LV512-12TI implements a sector-erase Flash architecture where each of 512 sectors (128 bytes) is independently programmable via a three-byte software unlock sequence. Programming requires no external high voltage - all operations execute at VCC = 3.3V ±0.3V.
It features dual status detection: DATA polling on I/O7 (complement-to-data during programming) and Toggle Bit behavior on I/O6, enabling host software to monitor program completion without timing dependencies. Read operation mirrors standard EPROM timing with CE/OE dual enable control and high-impedance outputs when disabled.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 512 Kbit (64K × 8), sufficient for boot code or configuration tables in resource-constrained systems |
| Read Access Time | 120 ns max - enables direct execution from Flash on 8/16-bit microcontrollers with ≤8.3 MHz bus timing |
| VCC Supply Range | 3.0V to 3.6V - compatible with 3.3V logic families and eliminates need for level shifters |
| Active Current | 15 mA at 5 MHz - supports low-power operation in battery-backed or energy-sensitive designs |
| Standby Current | 50 µA (industrial temp) - meets stringent sleep-mode requirements for industrial monitoring nodes |
| Endurance | >10,000 program/erase cycles per sector - suitable for field-upgradable firmware with infrequent updates |
| Operating Temp | −40°C to +85°C - certified for deployment in industrial automation, motor drives, and outdoor equipment |
Pinout & Package
AT29LV512-12TI is packaged in a 32-lead Thin Small Outline Package (TSOP Type I, 8 × 20 mm), JEDEC MO-142 compliant, with gull-wing leads and pin 1 identifier marked on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A15 | Address Inputs | 16-bit address bus interface; A0–A6 select byte within 128-byte sector, A7–A15 select sector |
| I/O0–I/O7 | Bi-directional Data Bus | 8-bit parallel data path; supports byte load during programming and true data read post-polling |
| CE | Chip Enable | Active-low chip select; must be low for read/write; inhibits programming if held high |
| OE | Output Enable | Active-low output control; disables outputs (high-Z) when high; required high during WE-controlled programming |
| WE | Write Enable | Active-low write strobe; latches address/data on falling edge; initiates byte load when CE is low and OE is high |
| VCC | Power Supply | 3.3V supply input; internal VCC sense circuitry disables programming if voltage drops below 1.8V |
| GND | Ground | Reference return for all inputs, outputs, and internal circuitry |
| NC | No Connect | Unbonded pins (positions 6, 9, 10, 13 on TSOP top view); must remain unconnected |
Key Features
| Feature | Design Value |
|---|---|
| Software Data Protection | Three-byte unlock sequence (AAh→55h→A0h) required before any sector programming - prevents accidental writes during power transients or noise events |
| Sector-Based Reprogramming | 512 independent 128-byte sectors allow partial updates without erasing full memory - reduces firmware update time and wear leveling overhead |
| DATA Polling & Toggle Bit | I/O7 complement-read and I/O6 toggle provide deterministic, bus-compatible program status feedback - eliminates need for fixed delay timers in host firmware |
| CMOS/TTL Input Compatibility | Inputs accept 0–5.5V (at 3.3V supply), enabling direct interfacing with 5V microcontrollers without external level translators |
| Hardware Write Inhibit | VCC sense, 10 ms power-on delay, and noise filtering (<15 ns pulse rejection) provide robust physical-layer protection against spurious programming |
Applications
| Industrial PLC Firmware Storage | Medical Device Configuration Memory |
|---|---|
Use Scenario: Storing ladder logic programs and I/O mapping tables in programmable logic controllers deployed in factory-floor environments with wide ambient temperature swings. IC Role / Device Role / Timing Role: Nonvolatile code storage device with deterministic 120 ns read latency and sector-level update capability for field firmware patches. Use Value: Enables reliable in-system reprogramming without removing the module; industrial temperature rating ensures stable operation during thermal cycling in control cabinets. | Use Scenario: Holding calibration coefficients, safety-critical configuration parameters, and device-specific operational limits in portable diagnostic instruments. IC Role / Device Role / Timing Role: Secure, tamper-resistant configuration memory with software lock and hardware write inhibit to prevent unauthorized parameter changes. Use Value: >10,000 endurance cycles support repeated recalibration over product lifetime; 50 µA standby current extends battery life in handheld units. |
| Automotive Body Control Module (BCM) | Network Edge Router Boot Image |
Use Scenario: Storing lighting control algorithms, window/mirror position profiles, and CAN message routing tables in automotive BCMs operating under engine bay thermal stress. IC Role / Device Role / Timing Role: Automotive-qualified (industrial temp) Flash memory providing fast read access for real-time control loop execution. Use Value: 3.3V-only operation simplifies power design; sector erase allows incremental updates to lighting logic without disrupting other subsystems. | Use Scenario: Hosting primary bootloader and fail-safe recovery image in enterprise-grade network routers requiring secure, field-upgradable firmware. IC Role / Device Role / Timing Role: Boot memory with verified read reliability and software-protected reprogramming for secure firmware delivery. Use Value: DATA polling enables deterministic boot loader handoff; software chip erase (6-byte command) supports full image replacement during remote upgrades. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MX29LV512CMI-12G | Same density (512 Kbit), 120 ns access, but uses 3.0–3.6V supply and offers 100 µA standby current (vs. 50 µA) | Designed for broader industrial temperature range (−40°C to +105°C); lacks hardware VCC sense inhibit | Preferred when extended high-temp operation is required and slightly higher standby current is acceptable |
| SST39VF512-70-4C-NHE | 512 Kbit, 70 ns access (faster), but requires 2.7–3.6V supply and has 20 µA standby (lower power) | Features single-power-supply byte-write capability and built-in command register; no Toggle Bit support | Chosen when faster read performance and lower standby power are critical, and host firmware can accommodate different status polling method |
Compared with MX29LV512CMI-12G and SST39VF512-70-4C-NHE, the AT29LV512-12TI provides tighter industrial standby current (50 µA), integrated VCC-sense programming inhibition, and dual-status detection (DATA polling + Toggle Bit), making it optimal for thermally constrained, safety-aware embedded systems requiring predictable reprogramming behavior.
Availability
AT29LV512-12TI is available at Aetrix Electronics and suitable for industrial automation, medical diagnostics, and automotive body control applications requiring stable component supply, long-term lifecycle support, and guaranteed industrial temperature grade performance.
Supply support for AT29LV512-12TI 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, Flash memory, and secure authentication ICs.
The AT29LV512-12TI belongs to Atmel's legacy LV-series Flash memory product line, designed specifically for in-system programmable, low-voltage, industrial-grade nonvolatile storage in space- and power-constrained embedded systems.
FAQ
What is the maximum operating temperature range for the AT29LV512-12TI?
The AT29LV512-12TI is rated for industrial temperature operation from −40°C to +85°C. This specification is confirmed in the Ordering Information table and DC Operating Range section of the official datasheet (Rev. 0177M–05/02). The device maintains full functionality-including 120 ns read access, 50 µA standby current, and sector programming-across this entire range.
Does the AT29LV512-12TI require high-voltage programming signals?
No, the AT29LV512-12TI does not require high-voltage programming signals. It performs all read and write operations using only the 3.3V VCC supply (3.0V to 3.6V). Programming is enabled solely through a three-byte software unlock sequence (AAh → 55h → A0h), followed by sector-based byte loading - a core feature explicitly stated in the device description and Software Protected Programming section of the AT29LV512-12TI datasheet.
How many sectors does the AT29LV512-12TI have, and what is the size of each sector?
The AT29LV512-12TI contains exactly 512 sectors, each sized at 128 bytes. This is specified in the Features list ("512 Sectors (128 Bytes/Sector)") and reinforced in the Description ("Reprogramming the AT29LV512 is performed on a sector basis; 128 bytes of data are loaded into the device and then simultaneously programmed"). Sector addressing uses A7–A15, while A0–A6 select the byte within the sector.
What package type is used for the AT29LV512-12TI?
The AT29LV512-12TI uses a 32-lead Thin Small Outline Package (TSOP), designated as "32T" in Atmel's ordering information. Its mechanical dimensions conform to JEDEC MO-142, Variation BD, with an 8 mm × 20 mm footprint and gull-wing leads. This is distinct from the PLCC variant (32J) and is explicitly assigned to the "TI" suffix in the ordering table.
Can the AT29LV512-12TI be used with a 5V microcontroller interface?
Yes - the AT29LV512-12TI's address and control inputs (A0–A15, CE, OE, WE) tolerate input voltages up to 5.5V when operating at VCC = 3.3V ±0.3V, as specified in the "INPUT LEVELS" section. However, I/O0–I/O7 must remain within 0–3.6V. Therefore, direct connection to a 5V microcontroller's address/control bus is safe, but bidirectional data lines require level translation or open-drain buffering to avoid exceeding I/O voltage limits.
AT29LV512-12TI 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:
- 20ms
- Access Time:
- 120 ns
- Voltage - Supply:
- 3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-TSOP
AT29LV512-12TI FAQ
1.How can I place an order for AT29LV512-12TI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT29LV512-12TI 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 AT29LV512-12TI reliable?
The price and inventory of AT29LV512-12TI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT29LV512-12TI is usually 5 days.
3.What payment methods are accepted for AT29LV512-12TI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT29LV512-12TI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT29LV512-12TI?
AT29LV512-12TI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT29LV512-12TI 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 AT29LV512-12TI?
For technical support, including AT29LV512-12TI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT29LV512-12TI requirements.
6.How does Aetrix verify that AT29LV512-12TI is sourced from the original manufacturer or authorized distributors?
All AT29LV512-12TI 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 AT29LV512-12TI meets industry standards.
7.What is the process for return or replacement of AT29LV512-12TI?
All AT29LV512-12TI units undergo pre-shipment inspection (PSI). If there is an issue with AT29LV512-12TI, 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 AT29LV512-12TI part is unused and in its original packaging.
Return procedure for AT29LV512-12TI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT29LV512-12TI Tags
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