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Microchip Technology AT29LV010A-20TI
- Part No.:
- AT29LV010A-20TI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
AT29LV010A-20TI.pdf
- Description:
- IC FLASH 1MBIT PARALLEL 32TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,978
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Product details
Overview
AT29LV010A-20TI from Atmel is a 1 Mbit (128K × 8) 3.3 V-only Flash memory IC organized for byte-wide parallel access, featuring 120 ns read access time, 20 ms sector program cycle time, and 1024 × 128-byte sectors with software data protection - used in embedded boot code storage and firmware update applications.
For engineers reviewing the AT29LV010A-20TI datasheet, AT29LV010A-20TI pinout, AT29LV010A-20TI application, or AT29LV010A-20TI equivalent, key selection criteria include industrial temperature range (–40°C to +85°C), TSOP-32 package compatibility, sector-level reprogrammability, boot block lockout capability, and CMOS/TTL I/O compatibility.
Technical Context
The AT29LV010A-20TI implements sector-based in-system programming using a three-byte software command sequence (5555h/2AAAh/5555h) followed by 128-byte data loading; internal latches capture address and data at microprocessor speed, enabling bus release during erase-and-program execution.
It supports DATA polling on I/O7 and toggle-bit detection on I/O6 for end-of-program indication, includes dual 8 KB boot blocks with independent hardware lockout activation, and enforces hardware protection via VCC sense (<1.8 V inhibit), noise filtering (<15 ns pulse rejection), and CE/OE/WE control state validation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 1 Mbit (131,072 × 8), sufficient for compact boot firmware or configuration data storage |
| Read Access Time | 200 ns max (tACC), compatible with 5 MHz bus timing without wait states |
| Sector Program Time | 20 ms typical (tWC), enabling rapid field updates of 128-byte firmware segments |
| VCC Supply Range | 3.0 V to 3.6 V only - eliminates need for 5 V or 12 V programming voltages |
| Endurance | >10,000 write/erase cycles per sector, supporting long-term field upgradeability |
| Standby Current | 50 µA max (ISB1, industrial temp), minimizing power in sleep-mode embedded systems |
| Operating Temp | –40°C to +85°C (industrial grade), validated for harsh environmental deployment |
Pinout & Package
AT29LV010A-20TI is packaged in a 32-lead Thin Small Outline Package (TSOP Type I), 8 mm × 20 mm body, compliant with JEDEC MO-142 BD, with gull-wing leads and 0.5 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit address bus supporting full 128K-byte addressing; A7–A16 select sector, A0–A6 select byte within sector |
| I/O0–I/O7 | Bidirectional Data Bus | 8-bit parallel interface; supports DATA polling on I/O7 and toggle-bit detection on I/O6 |
| 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; high forces outputs to high-Z |
| WE | Write Enable | Active-low write strobe - initiates byte load during programming; OE must be high when WE and CE are both low |
| VCC | Power Supply | +3.3 V ±0.3 V supply - powers core logic and I/O; VCC sense circuitry inhibits programming if below 1.8 V |
| GND | Ground | Reference for all signals and power; decoupling required near VCC pin for stable operation |
| NC | No Connect | Two unconnected pins (A9 and one adjacent to VCC in TSOP layout); must remain floating, not tied |
Key Features
| Feature | Design Value |
|---|---|
| Software Data Protection | Three-byte unlock sequence prevents accidental writes - essential for field-deployed firmware integrity |
| Dual Boot Block Lockout | Independent 8 KB upper/lower boot blocks can be permanently locked to protect critical startup code |
| Internal Address/Data Latching | Latches 128 bytes at microprocessor speed - frees address/data bus for concurrent operations during programming |
| DATA Polling & Toggle Bit | Real-time program status feedback via I/O7 complement or I/O6 toggling - eliminates fixed delay timing dependencies |
| CMOS/TTL I/O Compatibility | Accepts 0–5.5 V inputs on control/address lines and drives standard TTL levels - simplifies interfacing with mixed-voltage systems |
Applications
| Industrial PLC Firmware Storage | Legacy Embedded Bootloader |
|---|---|
Use Scenario: Storing firmware images and configuration parameters in programmable logic controllers operating in factory-floor environments with wide temperature swings and electrical noise. IC Role / Device Role / Timing Role: Nonvolatile boot memory holding initialization code executed at power-on reset; accessed via parallel bus with deterministic 200 ns read latency. Use Value: Industrial temperature rating (–40°C to +85°C) and 10,000-cycle endurance ensure reliable field updates over product lifetime without hardware replacement. | Use Scenario: Providing boot code for legacy 8/16-bit microcontrollers in medical diagnostic instruments where design freeze prohibits component migration. IC Role / Device Role / Timing Role: Parallel Flash memory mapped into CPU address space as primary boot device; sector locking protects bootloader from corruption during application updates. Use Value: Dual 8 KB boot blocks with independent lockout enable secure separation of bootloader and application firmware in fixed-memory-map architectures. |
| Communications Equipment Configuration | Point-of-Sale Terminal Update Storage |
Use Scenario: Holding configuration tables, calibration data, and protocol stacks in DSLAMs and base station radios requiring infrequent but robust nonvolatile storage. IC Role / Device Role / Timing Role: Standalone Flash memory providing byte-addressable read/write access for runtime parameter management and field-upgradable feature sets. Use Value: 50 µA industrial standby current minimizes system power draw during idle periods, while sector programming enables selective updates without full-device erasure. | Use Scenario: Storing localized language packs, tax rule databases, and UI assets in retail terminals deployed globally across diverse regulatory jurisdictions. IC Role / Device Role / Timing Role: Firmware update storage accessed via microcontroller's external memory interface; software protection prevents unauthorized modification during retail floor operation. Use Value: Software data protection (5555h/2AAAh/5555h sequence) ensures only authenticated host firmware can initiate reprogramming - critical for PCI-DSS compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT29BV010A-20TI | Successor device with identical pinout, same 1 Mbit density and TSOP-32 package, but improved reliability and extended lifecycle support | Drop-in replacement for new designs; supports same boot block lockout and software protection features | Select AT29BV010A-20TI for new designs - Atmel explicitly recommends it over AT29LV010A-20TI |
| SST39VF010-20-4C-NHE | 1 Mbit 3.3 V Flash in 32-pin TSOP; 200 ns access, 10,000 endurance, but uses different unlock sequence (5555h/2AAAh) and lacks dual boot block lockout | Functional substitute where boot block protection is not required; requires firmware adaptation for programming algorithm | Use only when AT29LV010A-20TI's boot block lockout is unnecessary and SST's faster 10 µs toggle-bit response is beneficial |
Compared with AT29LV010A-20TI, AT29BV010A-20TI offers direct compatibility and active lifecycle support, while SST39VF010 provides comparable performance but requires redesign of programming routines and forfeits boot block security - making AT29BV010A-20TI the preferred upgrade path.
Availability
AT29LV010A-20TI is available at Aetrix Electronics and suitable for industrial PLC firmware storage, legacy embedded bootloader implementation, and communications equipment configuration requiring stable component supply across extended lifecycles.
Supply support for AT29LV010A-20TI 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, was a leading designer of nonvolatile memory and microcontroller solutions, known for robust Flash architecture and industrial-grade reliability.
The AT29LV010A product line delivers 3.3 V-only parallel Flash memory optimized for embedded boot code storage, firmware updates, and configuration retention in space-constrained industrial and communications systems.
FAQ
What is the maximum read access time specified for AT29LV010A-20TI?
The AT29LV010A-20TI has a maximum read access time (tACC) of 200 ns under industrial temperature conditions (–40°C to +85°C) and VCC = 3.0 V to 3.6 V. This value is guaranteed across the full operating range and aligns with the "-20" speed grade designation in the part number, ensuring compatibility with 5 MHz system buses without wait-state insertion.
Does AT29LV010A-20TI support in-system programming without high-voltage supplies?
Yes, AT29LV010A-20TI supports full in-system programming using only the 3.3 V VCC supply - no 5 V, 12 V, or external programming voltage is required. Programming is initiated via a three-byte software unlock sequence (5555h/2AAAh/5555h), after which 128-byte sector data is loaded using standard WE/CE strobes, making it ideal for field-upgradable embedded systems.
How many sectors does AT29LV010A-20TI contain, and what is the size of each sector?
The AT29LV010A-20TI contains 1024 sectors, each sized at 128 bytes. This sector granularity enables precise firmware patching and minimizes rewrite overhead. Sector addresses are selected using A7–A16, while byte addressing within a sector uses A0–A6 - a structure confirmed in the device's block diagram and programming algorithm documentation.
Can the boot blocks in AT29LV010A-20TI be independently locked, and how is lockout verified?
Yes, AT29LV010A-20TI features two independent 8 KB boot blocks (lower: 00000h–01FFFh; upper: 1E000h–1FFFFh), each with programmable lockout. Lock status is verified by entering software product identification mode and reading address 00002h (lower block) or 1FFF2h: FEh means unlocked, FFh means locked. This verification method is documented in Section 4.9.1 of the official datasheet.
Is AT29LV010A-20TI still recommended for new designs, and what is the suggested replacement?
No - Atmel explicitly marks AT29LV010A-20TI as "Not Recommended for New Designs" in the datasheet. The designated replacement is AT29BV010A-20TI, which shares identical pinout, timing, and feature set (including boot block lockout and software protection), but offers enhanced reliability and ongoing manufacturing support. Migration requires no PCB or firmware changes.
AT29LV010A-20TI 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:
- 200 ns
- Voltage - Supply:
- 3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-TSOP
AT29LV010A-20TI FAQ
1.How can I place an order for AT29LV010A-20TI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT29LV010A-20TI 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-20TI reliable?
The price and inventory of AT29LV010A-20TI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT29LV010A-20TI is usually 5 days.
3.What payment methods are accepted for AT29LV010A-20TI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT29LV010A-20TI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT29LV010A-20TI?
AT29LV010A-20TI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT29LV010A-20TI 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-20TI?
For technical support, including AT29LV010A-20TI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT29LV010A-20TI requirements.
6.How does Aetrix verify that AT29LV010A-20TI is sourced from the original manufacturer or authorized distributors?
All AT29LV010A-20TI 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-20TI meets industry standards.
7.What is the process for return or replacement of AT29LV010A-20TI?
All AT29LV010A-20TI units undergo pre-shipment inspection (PSI). If there is an issue with AT29LV010A-20TI, 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-20TI part is unused and in its original packaging.
Return procedure for AT29LV010A-20TI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT29LV010A-20TI Tags
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