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Microchip Technology AT29LV512-15TC
- Part No.:
- AT29LV512-15TC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
AT29LV512-15TC.pdf
- Description:
- IC FLASH 512KBIT PARALLEL 32TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,078
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Product details
Overview
AT29LV512-15TC from Atmel is a 512 Kbit (64K × 8) 3.3V-only Flash memory IC with 150 ns read access time, sector-based reprogramming (512 sectors × 128 bytes), and software data protection. It operates across commercial temperature range (0°C to 70°C), draws 15 mA active current and 40 µA CMOS standby current, and supports in-system reprogrammability without high-voltage programming signals - used in firmware storage for embedded controllers and boot code retention in industrial control modules.
For engineers reviewing the AT29LV512-15TC datasheet, AT29LV512-15TC pinout, AT29LV512-15TC application, or AT29LV512-15TC equivalent, key selection considerations include its TSOP-32 package, sector-erase architecture, DATA polling/toggle-bit program status detection, 3.3V-only operation, and compatibility with standard EPROM read timing interfaces.
Technical Context
The AT29LV512-15TC implements a sector-organized Flash architecture where each of 512 sectors holds 128 bytes and is erased and programmed as a unit. Programming requires a three-byte software unlock sequence before byte loading, and internal latches capture full 128-byte sectors at microprocessor speed.
It features dual program status detection: DATA polling on I/O7 (complement-to-data during programming) and toggle-bit behavior on I/O6. Hardware protections include VCC sense (<1.8V inhibit), 10 ms power-on delay, and noise filtering (<15 ns pulses ignored on WE/CE).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 512 Kbit (64K × 8), sufficient for boot code and configuration storage in resource-constrained systems |
| Read Access Time | 150 ns max - meets timing requirements for 6-MHz bus interfaces without wait states |
| Supply Voltage | 3.3V ±0.3V only - eliminates need for voltage translators in 3.3V logic domains |
| Active Current | 15 mA at 5 MHz - enables low-power operation in battery-backed or energy-sensitive applications |
| Standby Current | 40 µA CMOS - supports ultra-low-power sleep modes in always-on embedded devices |
| Endurance | >10,000 program/erase cycles per sector - suitable for field-upgradable firmware with moderate update frequency |
| Sector Size | 128 bytes - enables fine-grained updates without erasing unrelated firmware sections |
Pinout & Package
AT29LV512-15TC is packaged in a 32-lead Thin Small Outline Package (TSOP, Type I, 8 × 20 mm, JEDEC MO-142 BD), pin-compatible with industry-standard EPROM footprints and optimized for high-density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A15 | Address Inputs | 16-bit address bus supporting full 64K-word addressing; A7–A15 select sector, A0–A6 select byte within sector |
| I/O0–I/O7 | Bidirectional Data Bus | 8-bit parallel interface; supports true read/write data transfer and program status polling (I/O7, I/O6) |
| CE | Chip Enable | Active-low chip select; must be low for read or write; inhibits programming if held high |
| OE | Output Enable | Active-low output control; places I/O pins in high-Z when high; required high during programming |
| WE | Write Enable | Active-low write strobe; initiates byte load during programming; toggling enables toggle-bit detection |
| VCC | Power Supply | 3.3V ±0.3V supply; device inhibits programming if VCC drops below ~1.8V |
| GND | Ground | Reference for all inputs/outputs; decoupling near VCC pin critical for stable read/write margins |
| NC | No Connect | Pins 6, 9, 10, and 11 in TSOP are unconnected - must remain floating, not tied to VCC/GND |
Key Features
| Feature | Design Value |
|---|---|
| Software Data Protection | Three-byte unlock sequence (AAh/55h/A0h) prevents accidental writes - essential for field-deployed systems with shared address/data buses |
| Sector-Based Reprogramming | 512 independent 128-byte sectors enable partial firmware updates without full-chip erase - reduces update time and wear leveling overhead |
| DATA Polling & Toggle Bit | I/O7 complement-read and I/O6 toggling provide real-time, bus-compatible program status feedback - eliminates need for external timers or dedicated status lines |
| 3.3V-Only Operation | No 5V or 12V programming voltages required - simplifies power design and improves system reliability in mixed-voltage environments |
| CMOS/TTL-Compatible I/O | Inputs accept 0–5.5V (address/control), outputs drive 0–3.6V (I/O) - allows direct interfacing with both 3.3V and 5V microcontrollers |
Applications
| Industrial PLC Firmware Storage | Medical Device Bootloader Memory |
|---|---|
Use Scenario: Storing firmware images and calibration tables in programmable logic controllers deployed in factory automation environments. IC Role / Device Role / Timing Role: Nonvolatile boot memory providing fast 150 ns read access during cold start and supporting in-field firmware upgrades via sector erase. Use Value: Enables reliable, long-term code retention across wide temperature ranges (0°C to 70°C) while minimizing board space with TSOP-32 footprint. | Use Scenario: Holding certified bootloader and safety-critical initialization routines in portable diagnostic equipment requiring regulatory-compliant firmware integrity. IC Role / Device Role / Timing Role: Secure, software-protected Flash memory ensuring unauthorized code modification is prevented via three-byte unlock protocol. Use Value: Delivers >10,000 program/erase cycles per sector - supports multiple clinical software revisions over product lifetime without memory degradation. |
| Telecom Base Station Configuration | Automotive Body Control Module (BCM) |
Use Scenario: Retaining hardware-specific configuration parameters and communication stack settings in remote radio units operating in temperature-stable enclosures. IC Role / Device Role / Timing Role: Sector-erasable nonvolatile memory allowing selective update of network parameters without disrupting operational firmware. Use Value: 128-byte sector granularity minimizes update window and reduces risk of corruption during power interruption. | Use Scenario: Storing vehicle-specific feature enablement bits, sensor calibration data, and lighting control logic in body electronics modules. IC Role / Device Role / Timing Role: Low-power Flash memory with 40 µA standby current - extends battery life during vehicle sleep mode. Use Value: 3.3V-only operation eliminates level-shifting components, reducing BOM cost and improving EMC robustness in automotive harness environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AM29LV512-150EC | Same density (512 Kbit), 150 ns access, but uses AMD's CFI-compliant command set and has different unlock sequence (AAh/55h/80h then AAh/55h/A0h) | Requires firmware adaptation for command protocol; lacks hardware VCC-sense programming inhibit | Choose if migrating legacy AMD-based designs or requiring CFI compliance for standardized flash drivers |
| SST39VF512-70-4C-NHE | 512 Kbit, 70 ns access (faster), 3.3V-only, but organized as 64K × 8 with uniform 4-Kbyte sectors - no 128-byte sector support | Enables faster reads but requires larger erase blocks - less suitable for fine-grained parameter updates | Choose when read performance is prioritized over sector granularity, and system firmware can accommodate 4-KB erase boundaries |
Compared with AM29LV512-150EC and SST39VF512-70-4C-NHE, the AT29LV512-15TC offers uniquely small 128-byte sectors and integrated VCC-sense programming protection - making it optimal for applications demanding minimal update footprint and robust power-fail safety.
Availability
AT29LV512-15TC is available at Aetrix Electronics and suitable for industrial control systems, medical diagnostics equipment, and telecom infrastructure requiring stable component supply, long-lifecycle support, and TSOP-32 footprint compatibility.
Supply support for AT29LV512-15TC 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 AT29LV512-15TC belongs to Atmel's LV-series Flash memory product line, designed specifically for 3.3V embedded systems requiring in-system reprogrammability, low power consumption, and industrial-grade reliability.
FAQ
What is the maximum read access time specified for the AT29LV512-15TC?
The AT29LV512-15TC has a maximum read access time of 150 ns, as confirmed by its ordering code suffix "-15" and the AC Read Characteristics table in the official datasheet. This timing applies across the commercial temperature range (0°C to 70°C) with VCC = 3.3V ±0.3V and ensures compatibility with 6-MHz bus systems without added wait states. The AT29LV512-15TC achieves this while maintaining only 15 mA active current.
Does the AT29LV512-15TC support full-chip erase, or only sector erase?
The AT29LV512-15TC supports both sector erase (default operation) and optional full-chip erase. Full-chip erase is initiated via a 6-byte software command sequence documented in Atmel's Software Chip Erase application note. Sector erase remains the primary method - each of the 512 sectors (128 bytes each) can be independently erased and reprogrammed. The AT29LV512-15TC does not require high-voltage signals for either operation.
What package type is used for the AT29LV512-15TC, and what are its key mechanical dimensions?
The AT29LV512-15TC uses a 32-lead Thin Small Outline Package (TSOP, Type I), designated as package code "32T", conforming to JEDEC MO-142 Variation BD. Its footprint measures 8 mm × 20 mm, with a maximum height of 1.20 mm and lead pitch of 0.50 mm. The AT29LV512-15TC's TSOP package enables high-density PCB layouts and is compatible with standard reflow soldering profiles for lead-free assembly.
How does software data protection work on the AT29LV512-15TC?
Software data protection on the AT29LV512-15TC requires a precise three-byte unlock sequence: write AAh to address 5555h, then 55h to address 2AAAh, then A0h to address 5555h. Only after this sequence is completed can sector programming begin. The AT29LV512-15TC ignores all subsequent write attempts until the sequence is repeated. Power transitions do not reset the protection state, ensuring persistent safeguard against spurious writes.
Can the AT29LV512-15TC be interfaced directly with a 5V microcontroller?
Yes - the AT29LV512-15TC's address and control inputs (A0–A15, CE, OE, WE) tolerate 0–5.5V, enabling direct connection to 5V microcontrollers without level shifters. However, its I/O0–I/O7 pins are strictly 0–3.6V tolerant and must not exceed VCC + 0.6V. Therefore, bidirectional data lines require level translation when interfacing with 5V I/O domains. The AT29LV512-15TC's input voltage tolerance simplifies address/control routing but mandates careful handling of the data bus.
AT29LV512-15TC 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:
- 150 ns
- Voltage - Supply:
- 3V ~ 3.6V
- Operating Temperature:
- 0°C ~ 70°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-TSOP
AT29LV512-15TC FAQ
1.How can I place an order for AT29LV512-15TC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT29LV512-15TC 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 AT29LV512-15TC reliable?
The price and inventory of AT29LV512-15TC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT29LV512-15TC is usually 5 days.
3.What payment methods are accepted for AT29LV512-15TC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT29LV512-15TC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT29LV512-15TC?
AT29LV512-15TC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT29LV512-15TC 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 AT29LV512-15TC?
For technical support, including AT29LV512-15TC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT29LV512-15TC requirements.
6.How does Aetrix verify that AT29LV512-15TC is sourced from the original manufacturer or authorized distributors?
All AT29LV512-15TC 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 AT29LV512-15TC meets industry standards.
7.What is the process for return or replacement of AT29LV512-15TC?
All AT29LV512-15TC units undergo pre-shipment inspection (PSI). If there is an issue with AT29LV512-15TC, 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 AT29LV512-15TC part is unused and in its original packaging.
Return procedure for AT29LV512-15TC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT29LV512-15TC Tags
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