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Microchip Technology AT29BV010A-12JU
- Part No.:
- AT29BV010A-12JU
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-LCC (J-Lead)
- Datasheet:
-
AT29BV010A-12JU.pdf
- Description:
- IC FLASH 1MBIT PARALLEL 32PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:2,005
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Product details
Overview
AT29BV010A-12JU 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 systems. It delivers 120 ns read access time, supports sector-based reprogramming with 1024 × 128-byte sectors, and features hardware/software data protection. It is commonly deployed in microcontroller boot code storage and firmware update modules.
For engineers reviewing the AT29BV010A-12JU datasheet, AT29BV010A-12JU pinout, AT29BV010A-12JU application, or AT29BV010A-12JU equivalent, key selection criteria include its 120 ns read timing, 20 ms max sector program cycle, dual 8K boot blocks with independent lockout, CMOS/TTL-compatible I/O, and PLCC-32 packaging for legacy industrial PCBs.
Technical Context
The AT29BV010A-12JU implements a 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 three-byte command sequence (AAh/55h/A0h) to enable writes, preventing accidental overwrites.
It supports two boot blocks (0x0000–0x1FFF and 0xFE000–0xFFFF), each independently lockable via a seven-command algorithm. DATA polling on I/O7 and toggle-bit detection on I/O6 provide real-time program completion feedback without requiring external timers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 1 Mbit (131,072 × 8), organized as 128K words × 8 bits - directly maps to 128KB of firmware or configuration storage. |
| Read Access Time | 120 ns (max) - enables direct execution from flash (XIP) in 8-bit microcontrollers with ≤8.3 MHz bus timing. |
| Supply Voltage | 2.7V to 3.6V single supply - compatible with 3.3V logic domains and battery-backed systems without level shifters. |
| Active Current | 15 mA at 5 MHz / 3.6V - supports low-power operation in portable or energy-constrained designs. |
| Standby Current | 50 µA CMOS standby - maintains ultra-low quiescent draw when deselected in always-on subsystems. |
| Sector Size | 128 bytes per sector (1024 total) - enables fine-grained firmware updates without erasing full device contents. |
| Endurance | >10,000 write/erase cycles per sector - suitable for field-upgradable applications with moderate update frequency. |
Pinout & Package
AT29BV010A-12JU is housed in a 32-lead Plastic J-Leaded Chip Carrier (PLCC-32) package, compliant with JEDEC MS-016 Variation AE, with 1.27 mm pitch and 12.45 mm × 14.95 mm body dimensions.
| 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. |
| I/O0–I/O7 | Bidirectional Data Bus | 8-bit parallel interface; supports true read/write data transfer and DATA polling (I/O7) or toggle-bit detection (I/O6). |
| CE | Chip Enable | Active-low chip select; must be low for read or write; high-Z output when asserted high - prevents bus contention. |
| OE | Output Enable | Active-low output control; decouples outputs from bus during standby or write cycles - essential for shared data bus integrity. |
| WE | Write Enable | Active-low write strobe; initiates byte load during sector programming; latches address/data on falling edge. |
| VCC | Power Supply | Single 2.7–3.6V supply; powers core logic and I/O; includes VCC sense circuitry to inhibit programming below 2.0V. |
| GND | Ground Reference | Signal and power return path; required for stable read/write margins and noise immunity in mixed-signal environments. |
| NC | No Connect | Two unconnected pins (PLCC pins 13 & 31); must remain floating - no routing or grounding permitted. |
Key Features
| Feature | Design Value |
|---|---|
| Software Data Protection | Three-byte unlock sequence (5555h/2AAAh/5555h + A0h) required before any sector write - eliminates accidental firmware corruption during power transients or debug operations. |
| Dual Boot Block Lockout | Independent 8K-byte lockout for lower (0x0000–0x1FFF) and upper (0xFE000–0xFFFF) boot regions - secures bootloader code against overwrite while permitting application partition updates. |
| Internal Program Control | On-chip timer and erase/program sequencing - removes need for external timing logic or host CPU intervention during 20 ms sector programming. |
| DATA Polling & Toggle Bit | Real-time status reporting via I/O7 (complement-to-data) or I/O6 (toggling) - enables deterministic polling loops without fixed delays or external interrupt dependencies. |
| CMOS/TTL-Compatible I/O | Input thresholds (VIL = 0.6V, VIH = 2.0V) and output drive (VOH = 2.4V @ -100µA) support direct interfacing with both 3.3V and 5V microcontrollers. |
Applications
| Industrial PLC Firmware Storage | Embedded Bootloader Memory |
|---|---|
Use Scenario: Storing firmware images and configuration parameters in programmable logic controllers operating in harsh factory environments with wide temperature swings. IC Role / Device Role / Timing Role: Nonvolatile code storage device providing XIP-capable read access and field-upgradable sector programming under industrial (-40°C to +85°C) conditions. Use Value: 120 ns read timing ensures deterministic instruction fetch latency; 50 µA standby current minimizes system-level power budget impact during idle cycles. | Use Scenario: Hosting secure boot code and recovery firmware in medical diagnostic devices where tamper resistance and verified startup integrity are critical. IC Role / Device Role / Timing Role: Boot block–protected Flash memory holding immutable bootloader code, isolated from application updates via hardware-enforced lockout. Use Value: Independent 8K boot block lockout prevents malicious or erroneous overwrites; software product identification (0x1F/0x35) enables runtime part verification. |
| Legacy Automotive ECU Calibration Storage | Point-of-Sale Terminal Configuration Memory |
Use Scenario: Retaining engine calibration tables and fault logs in older automotive ECUs using 8-bit microcontrollers with parallel address/data buses. IC Role / Device Role / Timing Role: Parallel-interface Flash memory replacing EPROMs in legacy designs, supporting in-system reprogramming without high-voltage programmers. Use Value: Single 2.7–3.6V supply eliminates need for charge pumps; sector erase avoids full-device reflash during calibration updates. | Use Scenario: Storing localized language packs, tax rate tables, and peripheral configuration in retail POS terminals subject to frequent regional deployment changes. IC Role / Device Role / Timing Role: Field-upgradable nonvolatile memory enabling remote firmware patching and localization updates via serial host interface (e.g., UART-to-parallel bridge). Use Value: 1024 × 128-byte sectors allow granular updates without disrupting operational code; green (Pb/halide-free) PLCC package meets RoHS compliance for global sales. |
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 only, no boot block lockout, TSOP-32 package | Lacks dual boot block protection and software lockout; better suited for cost-sensitive consumer applications without security requirements | Select when faster read timing is prioritized over firmware security features and PLCC footprint is not required. |
| MX29LV010CTTI-12 | 120 ns read, 3.0–3.6V supply, 1024 × 128-byte sectors, but no boot block lockout or software data protection | Missing boot block isolation and 3-byte unlock sequence - requires external MCU-level write protection logic | Choose when legacy board layout compatibility with PLCC-32 is needed but boot security is managed externally. |
Compared with SST39VF010-70-4C-NHE and MX29LV010CTTI-12, the AT29BV010A-12JU uniquely provides dual boot block lockout and mandatory software data protection - critical for certified industrial and medical firmware integrity, despite slightly slower read timing than SST39VF010.
Availability
AT29BV010A-12JU is available at Aetrix Electronics and suitable for industrial PLC firmware storage, embedded bootloader memory, and legacy automotive ECU calibration storage requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AT29BV010A-12JU 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 the AT29BV010A series.
The AT29BV010A belongs to Atmel's Low Voltage Flash family, designed specifically for in-system reprogrammability in 3.3V embedded systems where high-voltage programming is impractical and firmware security is essential.
FAQ
What is the maximum read access time specified for the AT29BV010A-12JU?
The AT29BV010A-12JU has a maximum read access time of 120 ns, as confirmed by its "-12" speed grade designation and validated in the AC Read Characteristics table. This timing applies under industrial temperature conditions (-40°C to +85°C) with VCC = 2.7V–3.6V and defines the delay from address stabilization to valid data on I/O0–I/O7. The AT29BV010A-12JU achieves this performance using Atmel's advanced nonvolatile CMOS EEPROM process.
Does the AT29BV010A-12JU support in-system programming without high-voltage signals?
Yes, the AT29BV010A-12JU supports full in-system programming using only its standard 2.7V–3.6V VCC supply - no external high-voltage generator or programming adapter is required. Programming is initiated via a software-controlled three-byte unlock sequence followed by sector-based byte loading. The AT29BV010A-12JU integrates internal voltage regulation and timing control to execute erase-and-program cycles autonomously.
How many sectors does the AT29BV010A-12JU have, and what is the size of each sector?
The AT29BV010A-12JU contains 1024 sectors, each sized at 128 bytes. This structure enables precise firmware updates without erasing unrelated code sections. During programming, all 128 bytes of a targeted sector must be loaded before the internal timer triggers simultaneous erase-and-write; any unloaded byte in the sector becomes indeterminate. The AT29BV010A-12JU uses A7–A16 to select the sector and A0–A6 to address individual bytes within it.
What are the two boot blocks in the AT29BV010A-12JU, and how is lockout enabled?
The AT29BV010A-12JU features two dedicated 8K-byte boot blocks: one at addresses 0x0000–0x1FFF (lower) and another at 0xFE000–0xFFFF (upper). Each can be independently locked using a seven-command software algorithm that writes specific values to fixed addresses. Once enabled, lockout prevents further erase or program operations to that block. The AT29BV010A-12JU retains this state until power-cycled, and chip erase is disabled if either block is locked.
Is the AT29BV010A-12JU RoHS-compliant and lead-free?
Yes, the AT29BV010A-12JU is offered in a green (Pb/halide-free) packaging option, as explicitly stated in the Features section and Ordering Information table. Its PLCC-32 package (suffix "JU") complies with RoHS Directive 2011/65/EU and is suitable for environmentally regulated markets. The AT29BV010A-12JU's lead-free construction includes matte tin lead finishes and halogen-free molding compounds, verified per JEDEC J-STD-020 moisture sensitivity level (MSL) requirements.
AT29BV010A-12JU 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:
- 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 FAQ
1.How can I place an order for AT29BV010A-12JU through Aetrix?
Please submit a Request for Quotation (RFQ) for AT29BV010A-12JU 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 reliable?
The price and inventory of AT29BV010A-12JU 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 is usually 5 days.
3.What payment methods are accepted for AT29BV010A-12JU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT29BV010A-12JU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT29BV010A-12JU?
AT29BV010A-12JU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT29BV010A-12JU 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?
For technical support, including AT29BV010A-12JU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT29BV010A-12JU requirements.
6.How does Aetrix verify that AT29BV010A-12JU is sourced from the original manufacturer or authorized distributors?
All AT29BV010A-12JU 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 meets industry standards.
7.What is the process for return or replacement of AT29BV010A-12JU?
All AT29BV010A-12JU units undergo pre-shipment inspection (PSI). If there is an issue with AT29BV010A-12JU, 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 part is unused and in its original packaging.
Return procedure for AT29BV010A-12JU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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