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Microchip Technology AT29LV010A-25JC
- Part No.:
- AT29LV010A-25JC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-LCC (J-Lead)
- Datasheet:
-
AT29LV010A-25JC.pdf
- Description:
- IC FLASH 1MBIT PARALLEL 32PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:4,760
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Product details
Overview
AT29LV010A-25JC from Atmel is a 1 Mbit (128K × 8) 3.3V-only Flash memory IC organized as 131,072 bytes, featuring 120 ns read access time, 20 ms sector program cycle time, and software-controlled sector erase/program with 1024 × 128-byte sectors. It supports boot block lockout for secure firmware storage and operates across commercial temperature range (0°C to 70°C) in 32-lead PLCC package.
For engineers reviewing the AT29LV010A-25JC datasheet, AT29LV010A-25JC pinout, AT29LV010A-25JC application, or AT29LV010A-25JC equivalent, key selection criteria include 3V-only operation, DATA polling/toggle-bit programming status detection, sector-level reprogrammability, boot block write protection, and compatibility with legacy EPROM-based microcontroller interfaces.
Technical Context
The AT29LV010A-25JC implements sector-based in-system programming using a three-byte software command sequence (AAh→55h→A0h) to enable byte loading into 128-byte sectors. Internal latching captures address and data at microprocessor speed, freeing the bus during autonomous erase-and-program execution controlled by an on-chip timer.
It features dual 8K-byte boot blocks with independent software-lockout activation via a seven-command algorithm, hardware VCC-sense and noise filtering to prevent spurious writes, and CMOS/TTL-compatible I/Os tolerant up to 5.5V on control inputs while operating from 3.3V ±0.3V supply.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 1 Mbit (131,072 × 8), enabling full BIOS/firmware storage in legacy embedded boot systems |
| Read Access Time | 250 ns max - defines minimum CPU wait-state requirement for zero-wait-state interface at ≤4 MHz bus clock |
| Supply Voltage | 3.3 V ±0.3 V - eliminates need for 5V programming voltage, simplifying power design and enabling direct microcontroller interfacing |
| Active Current | 15 mA max - determines peak power draw during read bursts; enables low-power system budgeting |
| Standby Current | 40 µA max (CMOS) - supports battery-backed retention in always-on subsystems without significant drain |
| Sector Size | 128 bytes × 1024 sectors - allows fine-grained firmware updates without erasing entire device |
| Endurance | >10,000 program/erase cycles per sector - validates long-term field reliability for infrequently updated code storage |
Pinout & Package
AT29LV010A-25JC is housed in a 32-lead Plastic Leaded Chip Carrier (PLCC) package, compliant with JEDEC MS-016 Variation AE, with 1.27 mm pitch and body size 12.45 × 14.95 mm. Pin 1 identifier is a corner notch; leads are J-bent with coplanarity ≤0.102 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit address bus supporting full 131,072-byte addressing; A7–A16 select sector, A0–A6 select byte within sector |
| I/O0–I/O7 | Bi-directional Data Bus | 8-bit parallel interface compatible with 8051, Z80, and 68K families; 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 forces standby mode (≤40 µA) |
| OE | Output Enable | Active-low output control; used with CE to manage bus contention; high-impedance state when high or CE high |
| WE | Write Enable | Active-low write strobe; initiates byte load during programming; must be synchronized with CE per AC timing specs (tWP ≥ 200 ns) |
| VCC | Power Supply | +3.3 V ±0.3 V main supply; internal VCC sense prevents programming below 1.8 V typical |
| GND | Ground | Reference for all I/O and internal logic; decoupling capacitor required near VCC/GND pins |
| NC | No Connect | Two unconnected pins (PLCC pins 13 and 31); must remain floating - no external connection permitted |
Key Features
| Feature | Design Value |
|---|---|
| Software Data Protection | Three-byte unlock sequence (5555h/2AAAh/5555h) required before any sector program - prevents accidental firmware corruption during power transients or noise events |
| Boot Block Lockout | Independent software lock for first and last 8K-byte blocks - secures bootloader and recovery image against overwrite while permitting application updates elsewhere |
| DATA Polling & Toggle Bit | I/O7 complement-read and I/O6 toggling provide real-time, non-intrusive program completion detection - eliminates fixed delays and enables deterministic firmware update timing |
| Single-Cycle Sector Erase/Program | Internal erase-and-program automation triggered after 128-byte load - removes need for external timing circuitry or complex host-side state machines |
| 3.3V-Only Operation | No 5V or 12V programming voltage required - reduces BOM count, simplifies PCB layout, and avoids level-shifting for modern 3.3V microcontrollers |
Applications
| Industrial PLC Firmware Storage | Legacy PC BIOS Replacement |
|---|---|
|
Use Scenario: Storing configuration logic and motion-control algorithms in programmable logic controllers where field updates occur annually. IC Role / Device Role / Timing Role: Nonvolatile code storage with sector-level reprogrammability; provides deterministic 250 ns read latency for real-time instruction fetch. Use Value: Boot block lockout prevents accidental overwrite of safety-critical startup routines while allowing application logic updates without full device erase. |
Use Scenario: Replacing obsolete 27C010 EPROMs in desktop motherboard BIOS sockets during repair or refurbishment. IC Role / Device Role / Timing Role: Drop-in Flash replacement for 5V EPROMs; operates at same 32-pin footprint with 3.3V supply and TTL-compatible signaling. Use Value: Eliminates need for UV eraser and programmer; enables in-system firmware patching via standard ISA/LPC interface without board removal. |
| Embedded Network Router Bootloader | Medical Device Diagnostic Firmware |
|
Use Scenario: Holding primary bootloader and fail-safe recovery image in residential broadband routers subject to remote OTA updates. IC Role / Device Role / Timing Role: Dual-boot block architecture stores redundant images; DATA polling ensures reliable update verification before reset. Use Value: Independent lockout of lower and upper 8K blocks guarantees bootloader integrity even if application partition is corrupted during update. |
Use Scenario: Storing calibration tables and diagnostic self-test routines in portable ultrasound and ECG units requiring regulatory-compliant firmware traceability. IC Role / Device Role / Timing Role: High-reliability nonvolatile storage with >10,000 endurance cycles; operates across 0°C–70°C commercial range with low standby current. Use Value: CMOS standby current ≤40 µA extends battery life in handheld devices; sector granularity enables versioned calibration updates without risking core 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-25JC | Successor device with identical pinout, 3.3V operation, and enhanced reliability; replaces AT29LV010A per Atmel's "Not Recommended for New Designs" notice | Same boot block lockout, sector programming, and timing - validated for drop-in use in existing AT29LV010A designs | Select for new designs requiring extended product lifecycle support and improved data retention specifications |
| MX29LV010CTTI-25G | Macronix 1Mbit Flash with 250 ns access, 3.3V supply, and software protection; differs in command set (60h/05h unlock) and lacks boot block lockout | Requires firmware adaptation for programming sequence; suitable where full-device erase is acceptable and boot security not required | Choose when cost sensitivity outweighs boot block security needs and host software can accommodate alternate command protocol |
Compared with AT29LV010A-25JC, AT29BV010A-25JC offers guaranteed long-term availability and tighter parametric limits, while MX29LV010CTTI-25G provides second-source flexibility at the expense of boot block protection and requires command-set revalidation.
Availability
AT29LV010A-25JC is available at Aetrix Electronics and suitable for industrial PLC firmware storage, legacy PC BIOS replacement, and embedded network router bootloader applications requiring stable component supply and long-lifecycle support.
Supply support for AT29LV010A-25JC 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 ICs.
The AT29LV010A belongs to Atmel's legacy low-voltage Flash memory product line, designed specifically for in-system reprogrammability in 3.3V embedded systems requiring EPROM-compatible interfaces and boot-level firmware security.
FAQ
What is the maximum read access time specified for the AT29LV010A-25JC?
The AT29LV010A-25JC has a maximum read access time of 250 ns, as indicated by the "-25" suffix in its part number. This parameter defines the worst-case delay from address valid and CE/OE assertion to stable data on I/O0–I/O7. It is tested under commercial temperature conditions (0°C to 70°C) with VCC = 3.3 V ±0.3 V and characterizes the device's ability to interface with microcontrollers operating at up to ~4 MHz without wait states. The AT29LV010A-25JC meets this spec consistently across its qualified lot releases.
Does the AT29LV010A-25JC support true 3.3V-only programming without external high-voltage signals?
Yes, the AT29LV010A-25JC performs all programming operations-including sector erase and byte programming-using only the 3.3V supply. It does not require 5V, 12V, or any auxiliary programming voltage. Programming is enabled solely through a documented three-byte software command sequence (AAh to 5555h, 55h to 2AAAh, A0h to 5555h), followed by 128-byte data loading. This 3V-only architecture eliminates external voltage generators and simplifies system-level design for the AT29LV010A-25JC.
How does the boot block lockout feature work on the AT29LV010A-25JC?
The AT29LV010A-25JC contains two dedicated 8K-byte boot blocks-one at the lowest addresses (0x00000–0x01FFF) and one at the highest (0xFE000–0xFFFFF). Each can be independently locked using a seven-command software algorithm. Once activated, the locked block becomes permanently read-only: no erase or program commands affect it. Lock status is verified by reading address 0x00002 (lower block) or 0x1FFF2 (upper block); FEh means unlocked, FFh means locked. This ensures bootloader integrity for the AT29LV010A-25JC in safety-critical systems.
Can the AT29LV010A-25JC be used as a direct replacement for 5V EPROMs like the 27C010?
The AT29LV010A-25JC is pin-compatible with the 27C010 in 32-pin PLCC and shares identical address/data/control pin assignments (A0–A16, I/O0–I/O7, CE, OE, WE). However, it operates exclusively at 3.3V and requires software unlocking for writes-unlike the 27C010's hardware-programmed UV-erasable architecture. While read functionality is electrically compatible, successful replacement of a 27C010 with the AT29LV010A-25JC demands firmware support for the unlock sequence and sector programming model.
What programming status detection methods does the AT29LV010A-25JC support?
The AT29LV010A-25JC supports two hardware-verified programming status detection methods: DATA polling on I/O7 (complement of loaded data until completion) and toggle-bit detection on I/O6 (repeated reads cause I/O6 to alternate between 0 and 1 until programming ends). Both methods operate without halting the host processor or requiring fixed timeouts. They are fully supported across all operating conditions and provide deterministic, real-time feedback essential for robust firmware update routines in the AT29LV010A-25JC.
AT29LV010A-25JC 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:
- 250 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)
AT29LV010A-25JC FAQ
1.How can I place an order for AT29LV010A-25JC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT29LV010A-25JC 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-25JC reliable?
The price and inventory of AT29LV010A-25JC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT29LV010A-25JC is usually 5 days.
3.What payment methods are accepted for AT29LV010A-25JC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT29LV010A-25JC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT29LV010A-25JC?
AT29LV010A-25JC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT29LV010A-25JC 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-25JC?
For technical support, including AT29LV010A-25JC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT29LV010A-25JC requirements.
6.How does Aetrix verify that AT29LV010A-25JC is sourced from the original manufacturer or authorized distributors?
All AT29LV010A-25JC 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-25JC meets industry standards.
7.What is the process for return or replacement of AT29LV010A-25JC?
All AT29LV010A-25JC units undergo pre-shipment inspection (PSI). If there is an issue with AT29LV010A-25JC, 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-25JC part is unused and in its original packaging.
Return procedure for AT29LV010A-25JC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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