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Microchip Technology AT29LV010A-25TC
- Part No.:
- AT29LV010A-25TC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
AT29LV010A-25TC.pdf
- Description:
- IC FLASH 1MBIT PARALLEL 32TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,061
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Product details
Overview
AT29LV010A-25TC from Atmel is a 1-Mbit (128K × 8) 3.3V-only Flash memory IC designed for in-system reprogrammability in embedded boot code storage. It features 120 ns read access time, 20 ms sector program cycle time, 10,000 write/erase endurance, and dual 8K-byte boot blocks with independent programming lockout - used in microcontroller-based system boot loaders and firmware update storage.
For engineers reviewing the AT29LV010A-25TC datasheet, AT29LV010A-25TC pinout, AT29LV010A-25TC application, or AT29LV010A-25TC equivalent, key selection criteria include sector-based 128-byte programming, DATA polling and toggle-bit end-of-write detection, 3.3V-only operation with TTL/CMOS-compatible I/O, and PLCC/TSOP-32 packaging for legacy industrial control and telecom board designs.
Technical Context
The AT29LV010A-25TC implements sector-erase architecture with 1024 × 128-byte sectors and internal address/data latches enabling microprocessor-speed byte loading. Its software data protection requires a three-byte command sequence (AAh→55h→A0h) before any sector program, preventing inadvertent writes during power transitions or noise events.
Hardware protection includes VCC sense (<1.8V inhibit), 10 ms power-on delay, OE/CE/WE logic-level inhibition, and 15 ns noise filtering on control inputs. Boot block lockout is activated via a seven-command algorithm and disables chip erase when enabled - critical for secure boot integrity in field-deployed systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 1 Mbit (131,072 × 8 bits) - supports full BIOS or bootloader image storage in space-constrained designs. |
| Read Access Time | 250 ns max - meets timing requirements for 4 MHz bus interfaces without wait states. |
| Sector Program Time | 20 ms typical - enables rapid field firmware updates with minimal system downtime. |
| Endurance | >10,000 write/erase cycles per sector - suitable for applications requiring infrequent but reliable field reprogramming. |
| Supply Voltage | 3.3 V ± 0.3 V - compatible with modern low-voltage logic families without level-shifting circuitry. |
| Standby Current | 40 µA (commercial) / 50 µA (industrial) - enables low-power retention in battery-backed or energy-sensitive systems. |
| Operating Temp | 0°C to 70°C (commercial) - validated for stable operation in office and lab environments. |
Pinout & Package
AT29LV010A-25TC is packaged in a 32-lead TSOP (Type 1, 8 × 20 mm), JEDEC MO-142 compliant, with gull-wing leads and 0.5 mm pitch. Pin 1 identifier located at top-left corner of package marking side.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit address bus supporting full 128K-byte addressing; A7–A16 define sector address during programming. |
| I/O0–I/O7 | Bidirectional Data Bus | 8-bit parallel interface; supports DATA polling on I/O7 and toggle-bit detection on I/O6 during program/erase. |
| CE | Chip Enable | Active-low device select; must be low for read/write; high forces outputs to high-impedance state. |
| OE | Output Enable | Active-low read control; used with CE to prevent bus contention; must be high during write operations. |
| WE | Write Enable | Active-low write strobe; controls byte load timing; falling edge latches address, rising edge latches data. |
| VCC | Power Supply | +3.3 V supply; must stabilize ≥20 ms after power-on before first access. |
| GND | Ground Reference | Signal and power ground reference; decoupling capacitor required within 1 cm of VCC pin. |
| NC | No Connect | Two unconnected pins (A9 and one adjacent to VCC); must remain floating - no external connection permitted. |
Key Features
| Feature | Design Value |
|---|---|
| Software Data Protection | Three-byte unlock sequence (5555h→2AAAh→5555h) required before every sector program - prevents accidental writes during noise or brown-out conditions. |
| Dual Boot Block Lockout | Independent 8K-byte upper/lower boot blocks; once locked, contents are permanently protected from erase/program - ensures bootloader integrity across firmware updates. |
| DATA Polling & Toggle Bit | I/O7 complement-read and I/O6 toggling provide real-time, hardware-verified program completion status - eliminates need for fixed delay timers in host firmware. |
| Single-Cycle Sector Erase/Program | Internal controller automatically erases target sector before programming - simplifies host driver design and guarantees atomic sector updates. |
| 3.3V-Only Operation | No 5V or 12V programming voltage required - reduces BOM count and PCB complexity versus older EPROM/Flash devices. |
Applications
| Industrial PLC Firmware Storage | Legacy Telecom Line Card Boot Memory |
|---|---|
Use Scenario: Storing boot firmware and configuration parameters in programmable logic controllers deployed in factory automation environments. IC Role / Device Role / Timing Role: Nonvolatile boot memory mapped to CPU reset vector; provides deterministic startup sequence with sector-locked bootloader code. Use Value: Dual boot blocks allow safe A/B firmware partitioning; 10,000-cycle endurance supports decades of field maintenance without replacement. | Use Scenario: Holding initialization code and DSP microcode in TDM-based line interface cards operating in central office cabinets. IC Role / Device Role / Timing Role: 3.3V-compatible Flash memory interfaced directly to Motorola 68K or Intel 80C188 microcontrollers via parallel bus. Use Value: 250 ns read access satisfies 4 MHz bus timing; TSOP-32 footprint enables compact card layout with minimal trace length. |
| Medical Diagnostic Equipment BIOS | Automated Test Equipment (ATE) Calibration Data |
Use Scenario: Storing self-test routines and hardware initialization sequences in portable ultrasound or ECG analyzers requiring regulatory-compliant firmware persistence. IC Role / Device Role / Timing Role: Secure boot memory with lockout-enabled lower boot block containing certified startup code; upper block holds field-upgradable application modules. Use Value: Software product identification mode (manufacturer code 1Fh, device code 35h) enables automated part verification during manufacturing test. | Use Scenario: Retaining calibration coefficients and sensor compensation tables in rack-mounted ATE mainframes performing precision analog measurements. IC Role / Device Role / Timing Role: Nonvolatile parameter storage accessed during power-up initialization; programmed once per unit during final test and rarely rewritten. Use Value: 40 µA standby current minimizes leakage impact on long-term calibration stability; sector architecture allows selective reprogramming of individual sensor channels. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT29BV010A-25TC | Successor device with improved reliability, same pinout and command set; rated for 100,000 endurance cycles. | Designed for new designs requiring extended lifecycle support and higher write endurance. | Select AT29BV010A-25TC for new projects; AT29LV010A-25TC remains viable for legacy repair or continuity builds. |
| MX29LV010CTC-25G | Macronix equivalent with identical 1Mbit density, 250 ns access, and TSOP-32 package; supports same software unlock sequence. | Drop-in alternative with broader temperature range (-40°C to +85°C standard) and enhanced ESD tolerance. | Use MX29LV010CTC-25G where industrial temp range or supply chain diversification is required. |
Compared with AT29LV010A-25TC, the AT29BV010A-25TC offers tenfold endurance and updated process technology while maintaining full software and pin compatibility; the MX29LV010CTC-25G provides identical timing and command structure with stronger industrial qualification - both serve as functional alternatives without PCB redesign.
Availability
AT29LV010A-25TC is available at Aetrix Electronics and suitable for industrial PLC firmware storage, legacy telecom line card boot memory, and medical diagnostic equipment BIOS requiring stable component supply and long-term obsolescence management.
Supply support for AT29LV010A-25TC 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 U.S.-based semiconductor company specializing in microcontrollers, Flash memory, and secure authentication ICs.
The AT29LV010A belongs to Atmel's legacy low-voltage Flash memory product line, engineered for 3.3V-only embedded systems requiring in-system reprogrammability and boot code security in industrial and communications infrastructure.
FAQ
What is the maximum read access time specified for the AT29LV010A-25TC?
The AT29LV010A-25TC has a maximum read access time of 250 ns, as defined by its speed grade suffix "-25". This value is guaranteed across the commercial temperature range (0°C to 70°C) and applies to both CE-controlled and OE-controlled read operations under standard 3.3V supply conditions. The parameter is characterized but not 100% tested in production.
Does the AT29LV010A-25TC require high-voltage programming signals?
No, the AT29LV010A-25TC operates exclusively at 3.3V and does not require elevated programming voltages such as 5V or 12V. All programming commands are executed using standard 3.3V logic levels and a software-controlled three-byte unlock sequence (5555h → 2AAAh → 5555h), eliminating the need for external voltage boost circuitry.
How many sectors does the AT29LV010A-25TC contain, and what is the size of each sector?
The AT29LV010A-25TC contains 1024 sectors, each consisting of 128 bytes. This sector organization enables granular reprogramming - only the modified 128-byte segment needs to be erased and rewritten, preserving data in unaffected sectors and reducing update time compared to full-chip erase methods.
Can the AT29LV010A-25TC be used in industrial temperature applications?
The AT29LV010A-25TC is rated for commercial temperature range (0°C to 70°C) only. For industrial applications (-40°C to +85°C), the AT29LV010A-25TI variant is specified - it shares identical electrical characteristics and pinout but undergoes extended temperature screening. Using the TC version outside its rated range may result in timing violations or data retention failure.
What happens to unprogrammed bytes within a sector during a sector program operation on the AT29LV010A-25TC?
During sector programming of the AT29LV010A-25TC, any byte within the 128-byte sector that is not explicitly loaded will read as FFh after programming completes. The device does not retain prior values for unloaded bytes - all 128 locations are simultaneously programmed with the latched data, making complete sector data preparation mandatory before initiating the write cycle.
AT29LV010A-25TC 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:
- 1Mbit
- Memory Organization:
- 128K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 20ms
- Access Time:
- 250 ns
- Voltage - Supply:
- 3V ~ 3.6V
- Operating Temperature:
- 0°C ~ 70°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-TSOP
AT29LV010A-25TC FAQ
1.How can I place an order for AT29LV010A-25TC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT29LV010A-25TC 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 AT29LV010A-25TC reliable?
The price and inventory of AT29LV010A-25TC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT29LV010A-25TC is usually 5 days.
3.What payment methods are accepted for AT29LV010A-25TC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT29LV010A-25TC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT29LV010A-25TC?
AT29LV010A-25TC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT29LV010A-25TC 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 AT29LV010A-25TC?
For technical support, including AT29LV010A-25TC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT29LV010A-25TC requirements.
6.How does Aetrix verify that AT29LV010A-25TC is sourced from the original manufacturer or authorized distributors?
All AT29LV010A-25TC 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 AT29LV010A-25TC meets industry standards.
7.What is the process for return or replacement of AT29LV010A-25TC?
All AT29LV010A-25TC units undergo pre-shipment inspection (PSI). If there is an issue with AT29LV010A-25TC, 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 AT29LV010A-25TC part is unused and in its original packaging.
Return procedure for AT29LV010A-25TC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT29LV010A-25TC Tags
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