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Microchip Technology AT29BV010A-25JI
- Part No.:
- AT29BV010A-25JI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-LCC (J-Lead)
- Datasheet:
-
AT29BV010A-25JI.pdf
- Description:
- IC FLASH 1MBIT PARALLEL 32PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:3,745
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Product details
Overview
AT29BV010A-25JI from Atmel is a 1 Mbit (128K × 8) single-supply Flash memory IC operating at 2.7V–3.6V, featuring 120 ns read access time, sector-based programming with 1024 × 128-byte sectors, and dual 8K-byte boot blocks with independent lockout. It supports in-system reprogramming without high-voltage inputs and is used in embedded firmware storage for industrial controllers and legacy BIOS modules.
For engineers reviewing the AT29BV010A-25JI datasheet, AT29BV010A-25JI pinout, AT29BV010A-25JI application, or AT29BV010A-25JI equivalent, key selection considerations include its 250 ns max read timing, PLCC-32 industrial-grade packaging (−40°C to +85°C), software data protection sequence, and boot block lockout capability for secure boot code retention.
Technical Context
The AT29BV010A-25JI implements a sector-erase architecture with internal address/data latches for 128-byte loads, automatic erase-before-program, and DATA polling (I/O7) or toggle-bit (I/O6) program completion detection. Its control logic requires CE/OE/WE coordination per JEDEC-compliant read and byte-load waveforms.
It integrates hardware protections including VCC sense (<2.0V inhibit), 10 ms power-on delay, noise filtering (<15 ns pulse rejection), and CMOS/TTL-compatible I/Os. Boot block lockout is enabled via a 7-command algorithm and disables chip erase when activated.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 1 Mbit (131,072 × 8), organized as 128K words × 8 bits |
| Supply Voltage | 2.7V–3.6V single supply - enables direct battery operation without level shifters |
| Read Access Time | 250 ns max - meets timing for 4 MHz bus interfaces with margin |
| Active Current | 15 mA at 5 MHz - defines power budget for active firmware fetch cycles |
| Standby Current | 50 µA (industrial temp) - supports low-power sleep modes in field-deployed systems |
| Sector Size | 128 bytes × 1024 sectors - enables fine-grained firmware updates without full chip erase |
| Endurance | >10,000 program/erase cycles per sector - qualifies for field-upgradable embedded applications |
Pinout & Package
AT29BV010A-25JI is packaged in a 32-lead Plastic Leaded Chip Carrier (PLCC-32), compliant with JEDEC MS-016 Variation AE, with body dimensions 12.45 mm × 14.95 mm × 3.35 mm (max height) and lead coplanarity ≤0.102 mm.
| 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 |
| CE | Chip Enable | Active-low chip select - must be low with OE low and WE high for read; inhibits programming if held high |
| OE | Output Enable | Active-low output control - places I/O pins in high-Z when high; required high during programming |
| WE | Write Enable | Active-low write strobe - initiates byte load on falling edge; must be high during read |
| I/O0–I/O7 | Bidirectional Data Bus | 8-bit data path for reads and sector programming; supports DATA polling on I/O7 and toggle-bit on I/O6 |
| NC | No Connect | Two unconnected pins (PLCC pin 13 and 32) - must remain floating, not tied to VCC/GND |
| VCC | Power Supply | 2.7V–3.6V main supply - powers core logic and I/O buffers; includes internal VCC sense circuitry |
| GND | Ground | Reference return for all signals and power - requires low-impedance connection to minimize noise coupling |
Key Features
| Feature | Design Value |
|---|---|
| Single 2.7V–3.6V Supply Operation | Eliminates need for external 5V or 12V programming voltages - simplifies power design and enables direct Li-ion battery interface |
| Software Data Protection | Three-command unlock sequence (AAh/55h/A0h) prevents accidental writes - critical for field-deployed systems with shared address/data buses |
| Dual Boot Block Lockout | Independent 8K-byte lockout for lower (0x0000–0x1FFF) and upper (0x1E000–0x1FFFF) memory regions - secures boot code against corruption during firmware updates |
| Internal Sector Erase & Program Timer | Automated erase-before-program cycle with 20 ms max duration - removes requirement for external timing control logic |
| DATA Polling and Toggle-Bit Detection | Real-time program status feedback via I/O7 complement or I/O6 toggling - enables CPU-driven polling without fixed delays or interrupts |
Applications
| Industrial PLC Firmware Storage | Legacy PC BIOS Modules |
|---|---|
Use Scenario: Storing firmware images and configuration parameters in programmable logic controllers deployed in factory automation environments with wide temperature swings. IC Role / Device Role / Timing Role: Nonvolatile program memory providing boot code and runtime firmware with sector-level update capability and lockout protection for safety-critical startup routines. Use Value: Enables field firmware upgrades without chip replacement while preserving boot integrity via hardware-enforced lockout of designated 8K boot blocks. |
Use Scenario: Replacing EPROMs in older desktop motherboard BIOS designs requiring in-circuit reprogrammability without UV erasers or high-voltage programmers. IC Role / Device Role / Timing Role: Drop-in Flash ROM replacement with EPROM-like read interface and 250 ns access time compatible with ISA bus timing constraints. Use Value: Eliminates need for UV-erasable sockets and external 12V programming supplies - reduces BOM cost and improves manufacturing yield. |
| Medical Device Configuration Memory | Telecom Line Card Boot Code |
Use Scenario: Retaining calibration data, device serial numbers, and regulatory compliance settings in Class II medical instruments subject to long-term reliability requirements. IC Role / Device Role / Timing Role: Secure, endurance-rated nonvolatile storage with >10,000 write cycles and industrial temperature support (−40°C to +85°C). Use Value: Guarantees data retention over 10+ years and withstands repeated field updates during device recalibration without degradation. |
Use Scenario: Hosting boot loader and FPGA configuration bitstreams on carrier-grade telecom line cards where hot-swap capability and firmware rollback are mandatory. IC Role / Device Role / Timing Role: Dual-boot memory with independently lockable 8K blocks - allows A/B firmware partitioning and atomic fail-safe updates. Use Value: Prevents bricking during remote firmware updates by locking active boot sector while programming standby sector. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SST39VF010-250-4C-NHE | Same density (1 Mbit), 3.0V–3.6V supply, 250 ns access, PLCC-32 package; lacks boot block lockout and uses different software unlock sequence | Requires modified firmware driver for programming; no hardware-protected boot region | Choose when boot security is not required and existing SST39VF driver infrastructure exists |
| MX29LV1100CTTI-25 | 1 Mbit, 3.0V–3.6V, 250 ns, TSOP-32 package; includes CFI query support but no dedicated boot blocks | TSOP footprint differs - requires PCB redesign; no lockout feature for boot sectors | Prefer for space-constrained designs where PLCC-to-TSOP adapter is acceptable and CFI compatibility is needed |
Compared with SST39VF010-250-4C-NHE and MX29LV1100CTTI-25, the AT29BV010A-25JI uniquely provides dual independently lockable 8K boot blocks and a 2.7V minimum supply - making it the only option among the three suitable for battery-backed or low-voltage industrial firmware storage with hardware-enforced boot code protection.
Availability
AT29BV010A-25JI is available at Aetrix Electronics and suitable for industrial PLC firmware storage, legacy BIOS modules, medical device configuration memory, and telecom line card boot code requiring stable component supply across extended temperature ranges.
Supply support for AT29BV010A-25JI 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, with headquarters in San Jose, CA.
The AT29BV010A product line delivers low-voltage, in-system programmable Flash memory for embedded firmware storage where battery operation, industrial temperature tolerance, and boot code security are essential design requirements.
FAQ
What is the operating temperature range for the AT29BV010A-25JI?
The AT29BV010A-25JI is rated for industrial temperature operation from −40°C to +85°C. This range is confirmed in the DC and AC Operating Range table of the datasheet and applies specifically to the "-JI" suffix variant. The "-JC" variant is commercial grade (0°C to +70°C). Thermal derating is not required within this specified range.
Does the AT29BV010A-25JI require high-voltage programming signals?
No, the AT29BV010A-25JI does not require high-voltage programming signals. It operates with a single 2.7V–3.6V supply for both read and write operations. Programming is enabled only after a verified three-byte software unlock sequence (AAh/55h/A0h); no external 12V or 5V programming voltage is needed, unlike older EPROM or EEPROM devices.
How is program completion detected on the AT29BV010A-25JI?
Program completion on the AT29BV010A-25JI can be detected using either DATA polling on I/O7 (which returns the complement of the loaded data until completion) or the toggle-bit method on I/O6 (which toggles between 0 and 1 during programming and stops upon completion). Both methods are supported simultaneously and require no additional hardware.
Can the boot blocks on the AT29BV010A-25JI be unlocked after lockout is enabled?
No, the boot block lockout on the AT29BV010A-25JI is irreversible once enabled. The lockout feature - activated via a seven-command algorithm - permanently disables programming and erasure of the selected 8K-byte block (lower or upper). There is no documented command sequence to disable lockout; the protected data remains immutable for the device lifetime.
What package type is used for the AT29BV010A-25JI?
The AT29BV010A-25JI uses a 32-lead Plastic Leaded Chip Carrier (PLCC-32) package, per the Ordering Information table and mechanical drawings in the datasheet. This surface-mount package features J-shaped leads, a 1.27 mm pitch, and complies with JEDEC MS-016 Variation AE. It is distinct from the TSOP-32 option (e.g., AT29BV010A-25TI).
AT29BV010A-25JI 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:
- 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-25JI FAQ
1.How can I place an order for AT29BV010A-25JI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT29BV010A-25JI 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-25JI reliable?
The price and inventory of AT29BV010A-25JI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT29BV010A-25JI is usually 5 days.
3.What payment methods are accepted for AT29BV010A-25JI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT29BV010A-25JI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT29BV010A-25JI?
AT29BV010A-25JI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT29BV010A-25JI 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-25JI?
For technical support, including AT29BV010A-25JI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT29BV010A-25JI requirements.
6.How does Aetrix verify that AT29BV010A-25JI is sourced from the original manufacturer or authorized distributors?
All AT29BV010A-25JI 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-25JI meets industry standards.
7.What is the process for return or replacement of AT29BV010A-25JI?
All AT29BV010A-25JI units undergo pre-shipment inspection (PSI). If there is an issue with AT29BV010A-25JI, 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-25JI part is unused and in its original packaging.
Return procedure for AT29BV010A-25JI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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