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Microchip Technology AT29BV010A-12JU-T
- Part No.:
- AT29BV010A-12JU-T
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-LCC (J-Lead)
- Datasheet:
-
AT29BV010A-12JU-T.pdf
- Description:
- IC FLASH 1MBIT PARALLEL 32PLCC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
AT29BV010A-12JU-T from Microchip Technology (formerly Atmel) is a 1-Mbit (128K × 8) single-supply 2.7V–3.6V Flash memory IC used for nonvolatile code and data storage in embedded microcontroller systems. It delivers 120 ns read access time, supports sector-based reprogramming with 1024 × 128-byte sectors, and features dual 8K-byte boot blocks with independent programming lockout - enabling secure firmware boot code storage in industrial control and legacy instrumentation.
For engineers reviewing the AT29BV010A-12JU-T datasheet, AT29BV010A-12JU-T pinout, AT29BV010A-12JU-T application, or AT29BV010A-12JU-T equivalent, key selection considerations include its PLCC-32 package, software-controlled sector erase/program, DATA polling and toggle-bit program status detection, and compatibility with 5V-tolerant address/control inputs while operating on 3.3V-only VCC.
Technical Context
The AT29BV010A-12JU-T implements a CMOS-based Flash architecture with internal latching of 128-byte sector data at microprocessor speed, enabling concurrent bus release during internal erase-and-program cycles. Its operation relies on a three-byte software unlock sequence (AAh/55h/A0h) before each sector load, and integrates hardware safeguards including VCC sense (<2.0V inhibit), 10 ms power-on delay, and noise filtering on WE/CE inputs.
Read mode emulates EPROM behavior with dual-line CE/OE control to prevent bus contention; program verification uses either I/O7 DATA polling (complement-to-data transition) or I/O6 toggle-bit monitoring. Boot block lockout is activated via a seven-command algorithm and disables chip erase when enabled - preserving critical startup code in the first and last 8K-byte regions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 1 Mbit (131,072 × 8), organized as 128K words × 8 bits - fits compact firmware images and configuration tables. |
| Supply Voltage | 2.7V to 3.6V only - eliminates need for charge pumps or external high-voltage generators during programming. |
| Read Access Time | 120 ns max - enables direct interfacing with 8-bit microcontrollers running at ≤8 MHz without wait states. |
| Sector Size | 128 bytes per sector (1024 total) - balances granularity for partial updates against overhead of sector management logic. |
| Program Cycle Time | 20 ms max per sector - deterministic timing allows precise host-side timeout handling without polling overhead. |
| Endurance | >10,000 write/erase cycles per sector - supports field-upgradable firmware in maintenance-intensive industrial devices. |
| Standby Current | 50 µA CMOS - suitable for battery-backed systems requiring low quiescent power during sleep modes. |
| Input Voltage Tolerance | Address/control pins tolerate 0–5.5V - simplifies interface to mixed-voltage 5V/3.3V system buses without level shifters. |
Pinout & Package
AT29BV010A-12JU-T is housed in a 32-lead Plastic J-Leaded Chip Carrier (PLCC-32) package, compliant with JEDEC MS-016 Variation AE, with body dimensions 12.32 mm × 14.86 mm × 3.36 mm (max height) and 1.27 mm lead pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit address bus supporting full 128K-word addressing; A0–A6 select byte within 128-byte sector during programming. |
| CE | Chip Enable | Active-low chip select; must be low for read or program; high disables outputs and enters standby mode. |
| OE | Output Enable | Active-low output control; used with CE to gate data output and prevent bus contention during reads. |
| WE | Write Enable | Active-low control for byte loading during sector programming; falling edge latches address/data in software-protected mode. |
| I/O0–I/O7 | Bidirectional Data Bus | 8-bit multiplexed data path for read output and program input; supports DATA polling on I/O7 and toggle-bit detection on I/O6. |
| VCC | Power Supply | 2.7V–3.6V core supply; powers all internal logic and charge pumps; VCC sense circuitry inhibits programming if below 2.0V. |
| GND | Ground | Reference for all signals and power; decoupling capacitor required near VCC pin for stable operation. |
| NC | No Connect | Two unconnected pins (PLCC pins 13 and 31); must remain floating - no routing or termination 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 events or power transients. |
| Dual Boot Block Lockout | Independent 8K-byte lockout for lower (0x0000–0x1FFF) and upper (0xE000–0xFFFF) memory regions - secures bootloader code against overwrite in field-deployed systems. |
| Internal Sector Latching | 128-byte data and address captured at microprocessor speed then internally latched - frees system bus immediately after load, improving host CPU utilization. |
| DATA Polling & Toggle Bit | I/O7 complement-read and I/O6 toggle provide two independent, hardware-verified methods to detect program completion - eliminates need for fixed delays or external timers. |
| Green Packaging | Pb/Halide-free PLCC-32 construction - meets RoHS Directive 2011/65/EU and facilitates compliance in environmentally regulated industrial markets. |
| 5V-Tolerant Control Inputs | CE, OE, WE, and address pins accept 0–5.5V logic levels while VCC = 2.7–3.6V - enables direct connection to legacy 5V microcontrollers without level-shifting components. |
Applications
| Industrial PLC Firmware Storage | Legacy Instrumentation Code Retention |
|---|---|
Use Scenario: Storing firmware and calibration tables in programmable logic controllers deployed in factory automation environments with wide temperature swings and electrical noise. IC Role / Device Role / Timing Role: Nonvolatile code storage IC providing fast 120 ns read access for real-time scan-cycle execution and sector-erasable update capability for field firmware patches. Use Value: Dual boot blocks allow safe fallback to known-good firmware if update fails; 10,000-cycle endurance supports decades of scheduled maintenance cycles in unattended installations. | Use Scenario: Maintaining calibrated sensor coefficients and instrument-specific configuration in benchtop multimeters and oscilloscopes with long product lifecycles. IC Role / Device Role / Timing Role: Standalone Flash memory IC acting as persistent parameter store, accessed via parallel 8-bit bus during power-up initialization and runtime calibration lookups. Use Value: 5V-tolerant inputs simplify integration with aging 5V microcontroller designs; low 50 µA standby current extends battery life in portable test equipment. |
| Embedded System Bootloader Memory | Communications Equipment Configuration |
Use Scenario: Hosting secure bootloader code in network routers and industrial gateways where tamper-resistant firmware startup is mandatory. IC Role / Device Role / Timing Role: Boot block-protected Flash memory IC delivering verified startup instructions to main processor, with lockout preventing unauthorized modification of boot vector table. Use Value: Independent lockout of first and last 8K-byte regions enables flexible boot-from-high-or-low-address architectures; software identification mode allows runtime density detection across product variants. | Use Scenario: Storing protocol stacks, MAC addresses, and device-specific settings in telecom line cards and base station subsystems requiring field-reprogrammability. IC Role / Device Role / Timing Role: In-system reprogrammable Flash memory IC supporting over-the-air or local firmware updates without hardware replacement or soldering. Use Value: Sector-based programming minimizes update window - only modified 128-byte segments are rewritten, reducing risk of corruption during power loss or reset events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SST39VF010-70-4C-NHE | 70 ns read access, 3.0–3.6V supply, same 1 Mbit density and PLCC-32 package; lacks boot block lockout and uses different unlock sequence. | Higher performance read path but no hardware-enforced boot protection; requires redesign of sector management firmware. | Select when faster read timing is critical and boot security is handled externally. |
| MX29LV160BTC-70G | 16 Mbit density, 3.0–3.6V, TSOP-48 package; includes CFI-compliant command set and 16-bit data bus - not pin-compatible. | Targeted at newer designs needing larger code space; incompatible pinout and wider bus require PCB revision. | Choose for future-proofing with scalable density, accepting layout change and driver adaptation. |
Compared with SST39VF010-70-4C-NHE, AT29BV010A-12JU-T trades 50 ns faster read access for robust boot block lockout and simpler 8-bit interface; versus MX29LV160BTC-70G, it offers drop-in PLCC-32 compatibility and proven legacy support at lower density - ideal for cost-sensitive, long-lifecycle industrial replacements.
Availability
AT29BV010A-12JU-T is available at Aetrix Electronics and suitable for industrial PLC firmware storage, legacy instrumentation code retention, and embedded system bootloader memory requiring stable component supply across extended production lifecycles.
Supply support for AT29BV010A-12JU-T 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
Microchip Technology acquired Atmel in 2016 and maintains full support for legacy Atmel Flash products, including technical documentation, programming tools, and long-term supply commitments.
The AT29BV010A-12JU-T belongs to Atmel's low-voltage Flash memory family designed specifically for in-system reprogrammability in resource-constrained 8-bit embedded systems operating from single 3.3V supplies.
FAQ
What is the maximum operating temperature range for the AT29BV010A-12JU-T?
The AT29BV010A-12JU-T is rated for industrial temperature operation from –40°C to +85°C. This range is validated per the device's DC and AC specifications in the official datasheet, and applies to both read and program operations under specified VCC conditions (2.7V–3.6V). Thermal derating is not required within this envelope.
Does the AT29BV010A-12JU-T support true 5V operation on its I/O pins?
No - the AT29BV010A-12JU-T requires VCC between 2.7V and 3.6V, and its I/O pins (I/O0–I/O7) are only guaranteed to tolerate voltages from 0V to VCC + 0.6V. However, address and control inputs (A0–A16, CE, OE, WE) are 5V-tolerant (0–5.5V), enabling direct interface with 5V microcontrollers while powering the device from 3.3V.
How does the boot block lockout feature work on the AT29BV010A-12JU-T?
The AT29BV010A-12JU-T contains two 8K-byte boot blocks - one at addresses 0x0000–0x1FFF and another at 0xE000–0xFFFF. Lockout is enabled independently per block using a seven-command software algorithm. Once activated, that block becomes permanently read-only: no erasure or programming is possible, and chip erase is disabled. Status is readable via software identification mode at addresses 0x00002 and 0x1FFF2.
Can the AT29BV010A-12JU-T be programmed using standard EPROM programmers?
No - the AT29BV010A-12JU-T requires in-system programming via its parallel interface using the documented software unlock sequence (5555h/2AAAh/5555h) followed by sector data loading. It lacks the high-voltage VPP pin required by traditional EPROM programmers and does not support device-wide erase commands outside the software chip erase sequence.
What is the purpose of the NC pins on the AT29BV010A-12JU-T PLCC package?
The AT29BV010A-12JU-T PLCC-32 package has two NC (No Connect) pins - pin 13 and pin 31 - which are electrically isolated from internal circuitry. These pins must remain unconnected on the PCB; no routing, pull-up/down resistors, or capacitors should be attached. Their presence accommodates package standardization and mechanical alignment but carries zero functional role in device operation.
AT29BV010A-12JU-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 32-LCC (J-Lead)
- Packaging:
- Tape & Reel (TR)
- 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:
- 120 ns
- Voltage - Supply:
- 2.7V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-PLCC (13.97x11.43)
AT29BV010A-12JU-T FAQ
1.How can I place an order for AT29BV010A-12JU-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT29BV010A-12JU-T 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 AT29BV010A-12JU-T reliable?
The price and inventory of AT29BV010A-12JU-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT29BV010A-12JU-T is usually 5 days.
3.What payment methods are accepted for AT29BV010A-12JU-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT29BV010A-12JU-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT29BV010A-12JU-T?
AT29BV010A-12JU-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT29BV010A-12JU-T 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 AT29BV010A-12JU-T?
For technical support, including AT29BV010A-12JU-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT29BV010A-12JU-T requirements.
6.How does Aetrix verify that AT29BV010A-12JU-T is sourced from the original manufacturer or authorized distributors?
All AT29BV010A-12JU-T 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 AT29BV010A-12JU-T meets industry standards.
7.What is the process for return or replacement of AT29BV010A-12JU-T?
All AT29BV010A-12JU-T units undergo pre-shipment inspection (PSI). If there is an issue with AT29BV010A-12JU-T, 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 AT29BV010A-12JU-T part is unused and in its original packaging.
Return procedure for AT29BV010A-12JU-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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