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Microchip Technology AT29LV010A-20JI
- Part No.:
- AT29LV010A-20JI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-LCC (J-Lead)
- Datasheet:
-
AT29LV010A-20JI.pdf
- Description:
- IC FLASH 1MBIT PARALLEL 32PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:4,190
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Product details
Overview
AT29LV010A-20JI from Atmel is a 1 Mbit (128K × 8) 3.3 V-only Flash memory IC designed for in-system reprogrammability in embedded controllers and firmware storage applications. It features 120 ns read access time, sector-based programming with 1024 × 128-byte sectors, dual 8K-byte boot blocks with independent lockout, and software data protection requiring a three-byte command sequence. The device operates across industrial temperature range (–40°C to +85°C) and supports DATA polling and toggle-bit status detection.
For engineers reviewing the AT29LV010A-20JI datasheet, AT29LV010A-20JI pinout, AT29LV010A-20JI application, or AT29LV010A-20JI equivalent, key selection considerations include its 3.3 V-only operation, 20 ms sector program cycle, CMOS/TTL-compatible I/O, hardware VCC-sense protection, and boot block lockout for secure firmware boot code storage.
Technical Context
The AT29LV010A-20JI implements sector-erase-and-program architecture with internal address/data latches for 128-byte loads, eliminating external bus hold requirements during programming. Its software data protection uses a deterministic 3-byte command sequence (AAh→55h→A0h) to enable write cycles, preventing inadvertent writes during power transitions or noise events.
Hardware protection includes VCC sense (<1.8 V inhibits programming), 10 ms power-on delay, OE/CE/WE state-dependent inhibit logic, and 15 ns noise filtering on control inputs. Boot block lockout is activated via a 7-command algorithm and disables chip erase when enabled - a critical constraint for secure boot partitioning.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 1 Mbit (131,072 × 8), organized as 1024 sectors × 128 bytes |
| Read Access Time | 200 ns max - defines minimum clock period for reliable read timing in microcontroller interfaces |
| Sector Program Time | 20 ms typical - determines firmware update latency per 128-byte sector |
| VCC Supply Range | 3.0 V to 3.6 V - requires stable 3.3 V ±0.3 V rail; no 5 V tolerance on VCC |
| Active Current | 15 mA at 5 MHz - sets power budget for active read operations |
| Standby Current | 40 µA (CMOS), 50 µA (industrial temp) - enables low-power retention in battery-backed systems |
| Endurance | 10,000 program/erase cycles per sector - constrains field-upgrade frequency in long-life deployments |
Pinout & Package
AT29LV010A-20JI is packaged in a 32-lead PLCC (Plastic Leaded Chip Carrier) with JEDEC MS-016, Variation AE compliance. Dimensions: 12.45 mm × 12.45 mm × 3.35 mm (max height), lead pitch 1.27 mm, coplanarity ≤0.102 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit address bus; A7–A16 select sector (1024 sectors), A0–A6 select byte within sector (128 bytes) |
| 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 forces high-impedance outputs and standby current |
| OE | Output Enable | Active-low output control; used with CE to prevent bus contention; high disables outputs |
| WE | Write Enable | Active-low write strobe; initiates byte load during programming; OE must be high during WE/CE low |
| NC | No Connect | Two pins (PLCC pins 15 & 31) are unconnected; must remain floating or tied to ground per layout guidelines |
| VCC | Power Supply | 3.3 V supply input; internal VCC sense circuitry disables programming if voltage <1.8 V |
| GND | Ground | Reference for all I/O and internal logic; decoupling capacitor required within 1 cm of VCC/GND pins |
Key Features
| Feature | Design Value |
|---|---|
| Software Data Protection | Three-byte unlock sequence (5555h→2AAAh→5555h) required before every sector program - prevents accidental writes during reset or noise |
| Dual Boot Block Lockout | Independent 8K-byte lockout for lower (0x0000–0x1FFF) and upper (0x1E000–0x1FFFF) memory regions - secures bootloader code against overwrite |
| DATA Polling & Toggle Bit | I/O7 complements last loaded byte until programming completes; I/O6 toggles during program/erase - enables polling without dedicated status registers |
| Internal Address/Data Latching | Latches full 128-byte sector data at microprocessor speed - frees address/data bus for other tasks during 20 ms internal program cycle |
| Hardware Write Inhibit | VCC sense, 10 ms power-on delay, and simultaneous OE/CE/WE state monitoring - eliminates need for external power-monitoring ICs |
Applications
| Firmware Storage in Industrial PLCs | Boot Code Storage in Network Routers |
|---|---|
Use Scenario: Storing field-upgradable firmware in programmable logic controllers operating in harsh factory environments with wide temperature swings. IC Role / Device Role / Timing Role: Nonvolatile firmware storage with sector-level reprogramming capability and boot block lockout to preserve core runtime code. Use Value: Enables remote firmware patches without hardware replacement; 10,000-cycle endurance supports >5 years of quarterly updates under typical usage. |
Use Scenario: Holding boot loader and initialization code in enterprise-grade routers requiring secure, tamper-resistant startup sequences. IC Role / Device Role / Timing Role: Secure boot memory with independently lockable 8K-byte blocks - one for primary bootloader, one for fail-safe recovery image. Use Value: Prevents corruption of boot code during power loss or failed updates; lockout activation ensures bootloader integrity across product lifecycle. |
| Embedded Controller Code Storage | Legacy System BIOS Replacement |
Use Scenario: Replacing EPROMs in legacy motor control boards where space and power constraints limit upgrade options. IC Role / Device Role / Timing Role: Drop-in 3.3 V-compatible Flash replacement for 27C010 EPROMs, supporting same 32-pin PLCC footprint and read timing. Use Value: Eliminates UV-erasure requirement and socket programming; 120 ns access matches EPROM performance while enabling in-circuit updates. |
Use Scenario: Upgrading aging PC motherboards with soldered BIOS ROMs to support modern UEFI-capable firmware images. IC Role / Device Role / Timing Role: Firmware storage with software product identification mode (manufacturer code 1Fh, device code 35h) for automatic algorithm selection in flash programmers. Use Value: Enables universal programmer compatibility across Atmel Flash families; hardware/software ID modes simplify production programming and field diagnostics. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT29BV010A-20JI | Successor part with improved reliability, same pinout and timing, but enhanced ESD tolerance and tighter VCC regulation (3.0–3.6 V vs. 3.3 V ±0.3 V) | Identical boot block lockout and sector programming; recommended for new designs per Atmel documentation | Select AT29BV010A-20JI for new designs requiring extended lifecycle support and higher robustness; AT29LV010A-20JI remains viable for legacy repair or continuity builds. |
| MX29LV010CTTI-20G | Macronix 1 Mbit Flash with 200 ns access, 3.3 V operation, and compatible PLCC-32 package; lacks boot block lockout but supports CFI query mode | No hardware-enforced boot protection; requires external logic or firmware checks to emulate lockout behavior | Choose MX29LV010CTTI-20G only when boot security is not required and CFI-compliant programming tools are available; verify timing margins with system bus loading. |
Compared with AT29LV010A-20JI, AT29BV010A-20JI offers documented longevity and enhanced electrical robustness without design changes, while MX29LV010CTTI-20G provides CFI compatibility at the cost of secure boot functionality - making AT29LV010A-20JI optimal for legacy systems needing proven, lockout-enabled firmware storage.
Availability
AT29LV010A-20JI is available at Aetrix Electronics and suitable for industrial automation, network infrastructure, and embedded controller applications requiring stable component supply and long-term obsolescence management.
Supply support for AT29LV010A-20JI 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 semiconductor manufacturer specializing in microcontrollers, Flash memory, and secure authentication devices.
The AT29LV010A belongs to Atmel's legacy low-voltage Flash memory product line, engineered for 3.3 V embedded systems requiring in-system programmability, sector-level erasure, and boot code protection in industrial and communications equipment.
FAQ
What is the maximum operating temperature range for the AT29LV010A-20JI?
The AT29LV010A-20JI is rated for industrial temperature operation from –40°C to +85°C. This range is validated per the device's DC and AC specifications, including standby current (50 µA max), read access time (200 ns max), and programming reliability. Operation outside this range may result in timing violations or reduced endurance.
Does the AT29LV010A-20JI support 5 V tolerant inputs?
No, the AT29LV010A-20JI does not support 5 V tolerant inputs. Its address and control inputs (A0–A16, CE, OE, WE) operate within 0 V to VCC + 0.6 V, and VCC is strictly 3.0–3.6 V. Driving inputs above VCC + 0.6 V risks latch-up or permanent damage. Interface with 5 V systems requires level-shifting circuitry.
How is boot block lockout enabled on the AT29LV010A-20JI?
Boot block lockout on the AT29LV010A-20JI is enabled via a 7-command software algorithm: AAh→55h→80h→AAh→55h→40h→00h (lower block) or FFh (upper block) at specific addresses. Once activated, the corresponding 8K-byte block becomes permanently read-only and disables chip erase. Verification is done by reading address 00002h (lower) or 1FFF2h - FEh means unlocked, FFh means locked.
Can the AT29LV010A-20JI be programmed using standard EPROM programmers?
No, the AT29LV010A-20JI cannot be programmed using standard EPROM programmers. It requires Flash-specific algorithms that implement the 3-byte unlock sequence (5555h→2AAAh→5555h), sector addressing (A7–A16), and 128-byte data loading. EPROM programmers lack support for software data protection, DATA polling, or toggle-bit status detection essential for safe programming.
What happens if the 3-byte unlock sequence is not sent before programming the AT29LV010A-20JI?
If the 3-byte unlock sequence (AAh→55h→A0h) is omitted before asserting WE/CE low, the AT29LV010A-20JI enters a polling state: I/O7 returns complemented data instead of true values, and internal timers activate for tWC (20 ms). No data is written, but read operations during this window behave as status polls - a safety mechanism preventing unintended writes during power-up or noise events.
AT29LV010A-20JI 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:
- 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-PLCC (13.97x11.43)
AT29LV010A-20JI FAQ
1.How can I place an order for AT29LV010A-20JI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT29LV010A-20JI 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-20JI reliable?
The price and inventory of AT29LV010A-20JI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT29LV010A-20JI is usually 5 days.
3.What payment methods are accepted for AT29LV010A-20JI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT29LV010A-20JI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT29LV010A-20JI?
AT29LV010A-20JI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT29LV010A-20JI 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-20JI?
For technical support, including AT29LV010A-20JI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT29LV010A-20JI requirements.
6.How does Aetrix verify that AT29LV010A-20JI is sourced from the original manufacturer or authorized distributors?
All AT29LV010A-20JI 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-20JI meets industry standards.
7.What is the process for return or replacement of AT29LV010A-20JI?
All AT29LV010A-20JI units undergo pre-shipment inspection (PSI). If there is an issue with AT29LV010A-20JI, 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-20JI part is unused and in its original packaging.
Return procedure for AT29LV010A-20JI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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