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Microchip Technology AT29BV010A-25JC
- Part No.:
- AT29BV010A-25JC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-LCC (J-Lead)
- Datasheet:
-
AT29BV010A-25JC.pdf
- Description:
- IC FLASH 1MBIT PARALLEL 32PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:4,437
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Product details
Overview
AT29BV010A-25JC from Atmel is a 1 Mbit (128K × 8) single-supply Flash memory IC designed for in-system reprogrammability in embedded boot code storage. It operates from 2.7V to 3.6V, delivers 250 ns maximum read access time, supports sector-based programming with 1024 × 128-byte sectors, and features two 8K-byte boot blocks with independent lockout. Used in industrial controllers and legacy BIOS firmware storage where low-voltage operation and hardware/software data protection are required.
For engineers reviewing the AT29BV010A-25JC datasheet, AT29BV010A-25JC pinout, AT29BV010A-25JC application, or AT29BV010A-25JC equivalent, key selection criteria include its PLCC-32 package, 250 ns read timing, CMOS standby current ≤40 µA, software-protected sector erase/program, and boot block lockout capability for secure boot code retention.
Technical Context
The AT29BV010A-25JC implements a nonvolatile Flash architecture using Atmel's EEPROM-derived process, enabling single 2.7–3.6V supply operation without high-voltage programming pins. Its sector-based reprogramming logic latches 128 bytes internally before initiating automatic erase-and-program cycles, decoupling bus activity during internal timing.
Hardware and software data protection mechanisms coexist: VCC sense inhibits programming below 2.0V, while a three-byte command sequence (5555h/2AAAh/A0h) enables sector writes. Boot block lockout uses a seven-command algorithm and disables chip erase when activated - a critical constraint for firmware integrity in field-deployed systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 1 Mbit (131,072 × 8), organized as 128K words × 8 bits - fits compact boot loaders and configuration tables. |
| Read Access Time | 250 ns max (tACC) - compatible with 4 MHz microcontroller buses without wait states. |
| Supply Voltage | 2.7V to 3.6V only - eliminates need for charge pumps or dual supplies in battery-powered or low-power systems. |
| Active Current | 15 mA at 5 MHz / 3.6V - enables low-power operation during firmware reads in portable equipment. |
| Standby Current | 40 µA CMOS (commercial temp) - reduces quiescent power in always-on embedded hosts. |
| Sector Size | 128 bytes × 1024 sectors - balances granularity for partial updates and efficiency for full-image rewrites. |
| Endurance | ≥10,000 program/erase cycles per sector - supports field firmware upgrades over product lifetime. |
Pinout & Package
AT29BV010A-25JC is packaged in a 32-lead Plastic Leaded Chip Carrier (PLCC-32), compliant with JEDEC MS-016, Variation AE. Dimensions: 12.45 mm × 14.95 mm × 3.35 mm (max height), with J-leads and pin 1 identifier notch.
| 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. |
| I/O0–I/O7 | Bidirectional Data Bus | 8-bit parallel interface; supports DATA polling on I/O7 and toggle-bit detection on I/O6 during programming. |
| CE | Chip Enable | Active-low chip select; must be low for read/write; high-Z output when high - prevents bus contention. |
| OE | Output Enable | Active-low output control; used with CE for dual-line read gating - essential for shared bus arbitration. |
| WE | Write Enable | Active-low write strobe; initiates byte load during sector programming; timing-critical for tWP ≥200 ns. |
| VCC | Power Supply | 2.7–3.6V main supply; VCC sense circuitry disables programming if voltage drops below ~2.0V. |
| GND | Ground | Reference for all I/O and internal logic; requires low-impedance connection to minimize noise during sector erase. |
| NC | No Connect | Two unconnected pins (PLCC pins 13 and 32); must remain floating - no external pull-up/down required. |
Key Features
| Feature | Design Value |
|---|---|
| Single 2.7–3.6V Supply Operation | Eliminates need for external 12V programming voltage - simplifies power design and enables direct microcontroller interfacing. |
| Software Data Protection | Three-byte unlock sequence (5555h/2AAAh/A0h) prevents accidental writes - critical for field-upgradable firmware integrity. |
| Boot Block Lockout | Independent 8K-byte upper/lower boot block locking via 7-command algorithm - secures bootloader against corruption. |
| DATA Polling & Toggle Bit | I/O7 complement polling and I/O6 toggling provide real-time program completion feedback without timer dependencies. |
| CMOS/TTL Input Compatibility | Inputs accept 0–5.5V signals (VCC = 2.7–3.6V) - allows direct interfacing with 5V microcontrollers without level shifters. |
Applications
| Industrial PLC Firmware Storage | Legacy PC BIOS Retention |
|---|---|
|
Use Scenario: Storing boot firmware and configuration parameters in programmable logic controllers operating in harsh factory environments. IC Role / Device Role / Timing Role: Nonvolatile boot memory holding initialization code executed at power-on reset; accessed via 8-bit parallel bus with 250 ns timing. Use Value: 40 µA standby current extends uptime during brownouts; boot block lockout prevents accidental overwrite of critical startup routines. |
Use Scenario: Retaining BIOS update images and hardware configuration in desktop motherboards prior to UEFI transition. IC Role / Device Role / Timing Role: In-system reprogrammable Flash replacing EPROMs; sector erase enables incremental BIOS patching without full chip reflash. Use Value: 128-byte sector granularity allows targeted updates to interrupt vectors or device drivers without disturbing core boot logic. |
| Embedded Network Router Bootloader | Medical Device Configuration Memory |
|
Use Scenario: Hosting secure bootloader code in network infrastructure equipment requiring remote firmware validation. IC Role / Device Role / Timing Role: Read-only execution memory for initial boot sequence; protected by hardware lockout and software write enable. Use Value: Two independent 8K boot blocks allow A/B firmware partitioning - one active, one staged - enabling safe over-the-air updates. |
Use Scenario: Storing calibrated sensor offsets and safety-critical operational limits in portable diagnostic instruments. IC Role / Device Role / Timing Role: Tamper-resistant configuration store; programmed once during calibration and locked via boot block feature. Use Value: >10,000 endurance cycles support recalibration across device lifetime; 2.7V minimum VCC ensures reliable operation during battery discharge. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MX29LV010CTTC-12 | 1 Mbit, 120 ns access, 3.0–3.6V supply, TSOP-32 package - faster but narrower voltage range. | Lacks boot block lockout; uses different software unlock sequence (AAh/55h/A0h). | Choose for speed-critical designs with stable 3.3V rails and no boot protection requirement. |
| SST39VF010-25-4C-NHE | 1 Mbit, 250 ns access, 2.7–3.6V, PLCC-32 - identical timing and voltage, but 16-byte sector size. | Smaller sector granularity increases flexibility but reduces endurance per physical block due to higher erase cycle count. | Prefer when frequent small updates (e.g., logging) outweigh boot security needs. |
Compared with AT29BV010A-25JC, MX29LV010CTTC-12 offers faster access but sacrifices voltage flexibility and boot lockout; SST39VF010-25-4C-NHE matches timing and package but trades boot security for finer-grained update capability - making AT29BV010A-25JC optimal for secure, low-voltage, sector-locked firmware storage.
Availability
AT29BV010A-25JC is available at Aetrix Electronics and suitable for industrial PLC firmware storage, legacy BIOS retention, and embedded bootloader applications requiring stable component supply, long-lifecycle support, and commercial temperature range (0°C to 70°C) reliability.
Supply support for AT29BV010A-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 devices, with a legacy in robust nonvolatile memory solutions.
The AT29BV010A product line was engineered for in-system programmable boot code storage in resource-constrained embedded systems, emphasizing single-supply operation, sector-level security, and industrial-grade reliability.
FAQ
What is the operating temperature range for the AT29BV010A-25JC?
The AT29BV010A-25JC is rated for commercial temperature operation from 0°C to 70°C. This range is specified in the ordering information table and applies to both PLCC (JC) and TSOP (TC) variants with the "-25" speed grade. Industrial variants (e.g., AT29BV010A-25JI) extend to –40°C to +85°C, but the "-25JC" suffix confirms commercial-grade thermal specification.
Does the AT29BV010A-25JC require high-voltage programming signals?
No, the AT29BV010A-25JC operates exclusively from a single 2.7V to 3.6V supply and does not require external high-voltage programming inputs. Programming is enabled via a software-controlled three-byte unlock sequence (5555h/2AAAh/A0h) followed by sector data loading - eliminating need for 12V VPP pins or dedicated programmers.
How is end-of-program detection implemented in the AT29BV010A-25JC?
The AT29BV010A-25JC supports two hardware-assisted end-of-program detection methods: DATA polling on I/O7 (complement of loaded data until completion) and toggle-bit monitoring on I/O6 (bit toggles during programming, stabilizes upon finish). Both methods allow host processors to poll asynchronously without fixed timing delays.
Can the boot blocks in the AT29BV010A-25JC be independently locked?
Yes, the AT29BV010A-25JC contains two 8K-byte boot blocks - one at the lowest addresses (0x00000–0x01FFF) and one at the highest (0xFE000–0xFFFFF) - each with independent lockout activation via a dedicated seven-command software sequence. Once locked, that block cannot be erased or programmed, and chip erase is disabled if either block is locked.
What package type is used for the AT29BV010A-25JC?
The AT29BV010A-25JC uses a 32-lead Plastic Leaded Chip Carrier (PLCC-32) package, identified by the "J" suffix in the ordering code. Its dimensions conform to JEDEC MS-016, Variation AE, with body size 12.45 mm × 14.95 mm and J-shaped leads for through-hole or surface-mount assembly.
AT29BV010A-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:
- 2.7V ~ 3.6V
- Operating Temperature:
- 0°C ~ 70°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-PLCC (13.97x11.43)
AT29BV010A-25JC FAQ
1.How can I place an order for AT29BV010A-25JC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT29BV010A-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 AT29BV010A-25JC reliable?
The price and inventory of AT29BV010A-25JC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT29BV010A-25JC is usually 5 days.
3.What payment methods are accepted for AT29BV010A-25JC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT29BV010A-25JC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT29BV010A-25JC?
AT29BV010A-25JC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT29BV010A-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 AT29BV010A-25JC?
For technical support, including AT29BV010A-25JC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT29BV010A-25JC requirements.
6.How does Aetrix verify that AT29BV010A-25JC is sourced from the original manufacturer or authorized distributors?
All AT29BV010A-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 AT29BV010A-25JC meets industry standards.
7.What is the process for return or replacement of AT29BV010A-25JC?
All AT29BV010A-25JC units undergo pre-shipment inspection (PSI). If there is an issue with AT29BV010A-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 AT29BV010A-25JC part is unused and in its original packaging.
Return procedure for AT29BV010A-25JC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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