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Microchip Technology AT29LV512-15JC
- Part No.:
- AT29LV512-15JC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-LCC (J-Lead)
- Datasheet:
-
AT29LV512-15JC.pdf
- Description:
- IC FLASH 512KBIT PARALLEL 32PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:3,052
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Product details
Overview
AT29LV512-15JC from Atmel is a 512 Kbit (64K × 8) 3.3V-only Flash memory IC with sector-erase architecture, 150 ns read access time, 20 ms max sector program cycle, and software data protection. It operates across commercial temperature range (0°C to 70°C), supports in-system reprogramming without high-voltage inputs, and is used in firmware storage for embedded controllers and boot code retention in industrial instrumentation.
For engineers reviewing the AT29LV512-15JC datasheet, AT29LV512-15JC pinout, AT29LV512-15JC application, or AT29LV512-15JC equivalent, key selection criteria include sector-based programming timing, 3.3V-only VCC compatibility, DATA polling/Toggle Bit status detection, CMOS standby current ≤40 µA, and PLCC-32 package mechanical fit for legacy board layouts.
Technical Context
The AT29LV512-15JC implements a sector-erase Flash architecture with 512 independent 128-byte sectors, enabling selective reprogramming without full-chip erase. Its internal address/data latches capture 128 bytes at microprocessor speed, freeing the bus during internal erase-and-program execution.
Operation relies on three-byte software command sequences (e.g., AAh/55h/A0h) to enable programming, with hardware safeguards including VCC sense (<1.8V inhibit), 10 ms power-on delay, and noise filtering on WE/CE inputs. Status detection uses DATA polling on I/O7 or Toggle Bit behavior on I/O6.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 512 Kbit (64K × 8), sufficient for boot loader and configuration tables in resource-constrained systems |
| Read Access Time | 150 ns max - meets timing for 6 MHz Z80 or 8 MHz 8051 bus interfaces without wait states |
| Supply Voltage | 3.0V–3.6V only - eliminates need for 5V-to-3.3V level translation in modern low-voltage designs |
| Active Current | 15 mA max at 5 MHz - enables low-power operation in battery-backed or energy-sensitive applications |
| Standby Current | 40 µA max (CMOS) - supports >1-year retention in always-on monitoring devices with periodic wake-up |
| Sector Program Time | 20 ms max per 128-byte sector - enables field firmware updates with predictable latency budgeting |
| Endurance | 10,000 write/erase cycles per sector - supports frequent calibration data logging in test equipment |
| Operating Temp | 0°C to 70°C - validated for commercial-grade industrial control panels and office automation hardware |
Pinout & Package
AT29LV512-15JC is packaged in a 32-lead Plastic J-Leaded Chip Carrier (PLCC-32), pin-compatible with JEDEC MS-016 AE variant. Body dimensions: 12.57 mm × 15.11 mm × 3.56 mm (max height), with 1.27 mm lead pitch and pin 1 identifier notch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A15 | Address Inputs | 16-bit address bus interface; A7–A15 select sector, A0–A6 select byte within sector during programming |
| I/O0–I/O7 | Bidirectional Data Bus | 8-bit parallel data path; I/O7 used for DATA polling, I/O6 for Toggle Bit status indication |
| CE | Chip Enable | Active-low chip select; must be low for read/write; high disables outputs and enables CMOS standby mode |
| OE | Output Enable | Active-low output control; used with CE to manage bus contention during read operations |
| WE | Write Enable | Active-low write strobe; initiates byte load during sector programming when CE is low and OE is high |
| VCC | Power Supply | 3.3V ±0.3V supply; internal VCC sense circuitry inhibits programming if voltage drops below 1.8V |
| GND | Ground Reference | Signal and power return; decoupling capacitor required within 10 mm of VCC pin per layout guidelines |
| NC | No Connect | Three unconnected pins (pins 6, 9, 10 in PLCC top view); must remain floating, not tied to VCC/GND |
Key Features
| Feature | Design Value |
|---|---|
| Software Data Protection | Three-byte unlock sequence (AAh/55h/A0h) required before each sector program - prevents accidental writes during power transients or noise events |
| Internal Program Control | On-chip timer and state machine handle erase + program automatically after byte load - eliminates external timing logic or firmware delays |
| DATA Polling & Toggle Bit | Dual status reporting via I/O7 complement read or I/O6 toggling - allows host processor to poll asynchronously without fixed timeout loops |
| 128-Byte Sector Architecture | 512 individually erasable sectors enable granular firmware updates - reduces risk of corruption during partial reflash vs. full-chip erase |
| 3.3V-Only Operation | No 5V or 12V programming voltage required - simplifies power design and eliminates high-voltage charge pump circuitry |
Applications
| Industrial PLC Firmware Storage | Medical Device Boot Code Retention |
|---|---|
Use Scenario: Storing firmware images and parameter sets in programmable logic controllers deployed in factory automation environments with ambient temperatures up to 70°C. IC Role / Device Role / Timing Role: Nonvolatile boot memory providing deterministic 150 ns read access to initialization code during cold start, with sector-level field updates via RS-485 host. Use Value: Enables secure, in-system firmware patching without removing the controller from production line, leveraging software data protection to prevent corruption during brown-out conditions. |
Use Scenario: Holding certified boot loader and safety-critical configuration data in portable diagnostic instruments requiring regulatory-compliant data integrity and long-term retention. IC Role / Device Role / Timing Role: Trusted boot memory with 10,000-cycle endurance supporting periodic calibration data logging and FDA-mandated firmware version tracking. Use Value: Guarantees verified startup sequence execution under battery power, using 40 µA standby current to extend device shelf life between clinical uses. |
| Telecom Line Card Configuration | Automotive Infotainment Head Unit BIOS |
Use Scenario: Storing hardware-specific configuration profiles and DSP initialization tables in carrier-grade DSLAM line cards operating in controlled telecom central offices. IC Role / Device Role / Timing Role: Configuration ROM accessed during card power-up; sector programming allows remote update of line provisioning parameters without service interruption. Use Value: Reduces truck rolls by enabling over-the-air reconfiguration of line characteristics, with DATA polling ensuring reliable write completion confirmation. |
Use Scenario: Hosting BIOS and bootloader code in automotive infotainment head units where ECU-level firmware must survive ignition cycling and thermal stress. IC Role / Device Role / Timing Role: Primary boot memory interfacing with ARM Cortex-A series processors; 3.3V-only operation matches SoC I/O voltage domain and eliminates level shifters. Use Value: Ensures fail-safe boot execution across automotive temperature range (validated to 70°C case temp), with hardware VCC sense preventing writes during unstable power-up. |
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-only, same 512 Kbit density and PLCC-32 package; lacks Toggle Bit status reporting | Higher performance read path but requires fixed-timing polling or external ready signal for program completion | Select when faster boot time is critical and host firmware can accommodate absence of Toggle Bit |
| MX29LV512CTTI-15G | 150 ns read access, identical timing and 3.3V operation; supports both sector and chip erase modes, with enhanced ESD rating (4 kV HBM) | Broader industrial qualification and higher reliability margin for harsher environments | Select for new designs targeting extended lifecycle or higher robustness requirements beyond AT29LV512-15JC's commercial spec |
Compared with SST39VF512-70-4C-NHE, AT29LV512-15JC offers dual-status detection (DATA polling + Toggle Bit) for more flexible host synchronization, while MX29LV512CTTI-15G provides superior ESD immunity and chip-erase capability - making it preferable for automotive or high-noise industrial deployments where AT29LV512-15JC's commercial temperature grade may be limiting.
Availability
AT29LV512-15JC is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device boot code retention, telecom line card configuration, and automotive infotainment BIOS applications requiring stable component supply and legacy PLCC-32 footprint compatibility.
Supply support for AT29LV512-15JC 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 security ICs, with headquarters in San Jose, California.
The AT29LV512 product line was designed for cost-sensitive, in-system programmable Flash memory applications in commercial and industrial embedded systems requiring reliable 3.3V-only operation and sector-level update flexibility.
FAQ
What is the maximum read access time specified for the AT29LV512-15JC?
The AT29LV512-15JC has a maximum read access time of 150 ns, measured from address valid to valid data on I/O0–I/O7 under commercial temperature conditions (0°C to 70°C) and VCC = 3.0V–3.6V. This value is guaranteed across all operating voltages and defines the minimum bus cycle time for synchronous read operations.
Does the AT29LV512-15JC support full-chip erase, or only sector erase?
The AT29LV512-15JC supports optional full-chip erase via a 6-byte software command sequence, in addition to its standard 128-byte sector erase functionality. The chip erase mode is documented in Atmel's Software Chip Erase application note and requires specific address/data patterns to initiate.
How does software data protection work on the AT29LV512-15JC?
Software data protection on the AT29LV512-15JC requires a precise three-byte unlock sequence (AAh to address 5555h, 55h to address 2AAAh, then A0h to address 5555h) before any sector programming can begin. This sequence must be repeated before each programming operation and remains active until power cycle or reset.
What package type is used for the AT29LV512-15JC?
The AT29LV512-15JC uses a 32-lead Plastic J-Leaded Chip Carrier (PLCC-32) package, conforming to JEDEC MS-016, Variation AE. Pin 1 is identified by a corner notch, and mechanical dimensions are 12.57 mm × 15.11 mm × 3.56 mm (max height).
Can the AT29LV512-15JC be programmed using standard EPROM programmers?
No - the AT29LV512-15JC requires 3.3V-only programming commands and does not accept standard EPROM high-voltage (12.5V) programming signals. It must be programmed in-system using its software command protocol or with dedicated Flash programmers supporting Atmel's 3V Flash algorithm and PLCC-32 socket interface.
AT29LV512-15JC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 32-LCC (J-Lead)
- Packaging:
- Tube
- 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-PLCC (13.97x11.43)
AT29LV512-15JC FAQ
1.How can I place an order for AT29LV512-15JC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT29LV512-15JC 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 AT29LV512-15JC reliable?
The price and inventory of AT29LV512-15JC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT29LV512-15JC is usually 5 days.
3.What payment methods are accepted for AT29LV512-15JC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT29LV512-15JC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT29LV512-15JC?
AT29LV512-15JC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT29LV512-15JC 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 AT29LV512-15JC?
For technical support, including AT29LV512-15JC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT29LV512-15JC requirements.
6.How does Aetrix verify that AT29LV512-15JC is sourced from the original manufacturer or authorized distributors?
All AT29LV512-15JC 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 AT29LV512-15JC meets industry standards.
7.What is the process for return or replacement of AT29LV512-15JC?
All AT29LV512-15JC units undergo pre-shipment inspection (PSI). If there is an issue with AT29LV512-15JC, 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 AT29LV512-15JC part is unused and in its original packaging.
Return procedure for AT29LV512-15JC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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