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Microchip Technology AT29BV010A-12TC
- Part No.:
- AT29BV010A-12TC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
AT29BV010A-12TC.pdf
- Description:
- IC FLASH 1MBIT PARALLEL 32TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,785
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Product details
Overview
AT29BV010A-12TC 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 120 ns read access time, supports sector-based programming with 1024 × 128-byte sectors, and includes two 8K-byte boot blocks with independent lockout. Used in microcontroller-based systems requiring reliable nonvolatile firmware storage.
For engineers reviewing the AT29BV010A-12TC datasheet, AT29BV010A-12TC pinout, AT29BV010A-12TC application, or AT29BV010A-12TC equivalent, key selection considerations include its 2.7–3.6V operation, 120 ns read timing, software data protection sequence, boot block lockout capability, and PLCC-32 packaging - all critical for legacy industrial controller and BIOS update designs.
Technical Context
The AT29BV010A-12TC implements a sector-erase/program architecture with internal address and data latches for 128-byte loads, eliminating external buffering during programming. Its dual boot blocks (0x0000–0x1FFF and 0xF800–0xFFFF) support secure low/high-address system boot with independent lockout activation via a 7-command software algorithm.
Hardware protection includes VCC sense (<2.0V inhibit), 10 ms power-on delay, and noise filtering (<15 ns pulse rejection on WE/CE). Data polling (I/O7 complement) and toggle-bit (I/O6) methods provide real-time program cycle status without requiring external timers or interrupts.
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 in space-constrained PCBs. |
| Read Access Time | 120 ns max - enables direct interface with 8-bit microcontrollers running at ≤8 MHz without wait states. |
| Supply Voltage | 2.7V to 3.6V single supply - compatible with battery-backed or low-voltage industrial rails; no 5V or high-VPP required. |
| Active Current | 15 mA typical at 3.6V/5 MHz - supports low-power operation in always-on embedded controllers. |
| Standby Current | 40 µA CMOS standby - extends battery life in maintenance-free field devices. |
| Sector Size | 128 bytes per sector (1024 total) - allows fine-grained firmware updates without erasing full device. |
| Endurance | >10,000 program/erase cycles per sector - sufficient for field firmware upgrades over 10+ year product lifecycles. |
Pinout & Package
AT29BV010A-12TC 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 12.32 mm × 14.86 mm footprint. Pin 1 identifier is a corner chamfer.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit address bus; A0–A6 select byte within 128-byte sector, A7–A16 select sector - enables deterministic sector addressing during software-programming sequences. |
| CE | Chip Enable | Active-low chip select; must be low with OE low and WE high for read; inhibits programming if held high - provides hardware-level write protection. |
| OE | Output Enable | Active-low output control; places I/O pins in high-impedance state when high - prevents bus contention during shared-memory access. |
| WE | Write Enable | Active-low write strobe; initiates byte load on falling edge when CE low and OE high - synchronizes data capture for sector programming. |
| I/O0–I/O7 | Bidirectional Data Bus | 8-bit data path; carries command codes (e.g., AAh, 55h, A0h), sector data, and polled status (I/O7 complement, I/O6 toggle) - supports both read and software-controlled programming. |
| NC | No Connect | Two unconnected pins (PLCC pins 13 and 32); must remain floating - no pull-up/down or routing required. |
| VCC | Power Supply | +2.7V to +3.6V supply; powers core logic and I/O buffers - decoupling capacitor (0.1 µF) required near pin for stable 120 ns read timing. |
| GND | Ground | Reference for all inputs/outputs; connects to system ground plane - critical for noise immunity during DATA polling and toggle-bit detection. |
Key Features
| Feature | Design Value |
|---|---|
| Software Data Protection | Three-command unlock sequence (AAh→55h→A0h) required before each sector program - prevents accidental writes during power transients or noise events. |
| Boot Block Lockout | Independent 8K-byte lockout for lower (0x0000–0x1FFF) and upper (0xF800–0xFFFF) blocks via 7-command enable - secures bootloader code against corruption in field-upgrade scenarios. |
| Internal Program Control | On-chip timer automates sector erase and programming after 128-byte load - eliminates need for external timing circuitry or firmware delay loops. |
| DATA Polling & Toggle Bit | I/O7 complement and I/O6 toggling provide asynchronous, bus-compatible program completion detection - avoids fixed delays and enables optimal throughput in interrupt-driven systems. |
| CMOS/TTL Input Compatibility | Inputs accept 0–5.5V regardless of VCC level - simplifies interfacing with mixed-voltage systems (e.g., 5V microcontrollers driving 3.3V Flash). |
Applications
| Industrial PLC Firmware Storage | Legacy PC BIOS/UEFI Module |
|---|---|
Use Scenario: Storing and updating ladder logic firmware in programmable logic controllers deployed in factory automation environments with wide temperature swings. IC Role / Device Role / Timing Role: Nonvolatile boot memory holding startup configuration and control firmware; accessed during cold start and field updates via RS-232 or CAN. Use Value: 40 µA standby current enables battery-backed retention during mains failure; -40°C to +85°C industrial rating ensures reliability in uncontrolled cabinet environments. |
Use Scenario: Providing boot code storage in desktop motherboards and embedded x86 systems where BIOS/UEFI firmware must survive power cycles and support flash updates. IC Role / Device Role / Timing Role: Primary boot ROM mapped at 0xFFFF0000; read during CPU reset vector fetch; programmed via chipset-controlled software sequence. Use Value: 120 ns read access meets Intel 486/Pentium timing requirements; two boot blocks allow dual-image fail-safe updates without external memory management. |
| Medical Device Configuration Memory | Telecom Line Card Bootloader |
Use Scenario: Holding calibration tables, safety-critical configuration parameters, and device identity in Class II medical instruments requiring long-term data integrity. IC Role / Device Role / Timing Role: Secure parameter store with lockout-enabled boot block protecting FDA-mandated startup routines; accessed via SPI-to-parallel bridge. Use Value: >10,000 endurance cycles support lifetime recalibration; software lockout prevents unauthorized modification of regulatory-compliant boot code. |
Use Scenario: Storing initialization firmware for DSP-based line cards in carrier-grade DSLAMs and optical transport equipment operating 24/7. IC Role / Device Role / Timing Role: In-system programmable boot loader enabling remote firmware patches without hardware replacement; sector erase minimizes service window. Use Value: Sector-based 20 ms max program cycle allows rapid field updates; VCC sense and noise filtering ensure robustness in electrically noisy telecom racks. |
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, 3.3V-only (3.0–3.6V), 1 Mbit density, same PLCC-32 package - faster but narrower voltage range. | Lacks boot block lockout; uses different software unlock sequence (5555h/2AAAh) - requires firmware adaptation. | Choose for higher-speed read-critical applications where voltage rail is tightly regulated at 3.3V. |
| MX29LV1100TTC-70G | 70 ns read, 3.0–3.6V, 1 Mbit, TSOP-32 only - no PLCC option; includes CFI query support not present in AT29BV010A-12TC. | Requires CFI-aware bootloader; no hardware boot block lockout - relies on software partitioning for security. | Choose for new designs prioritizing industry-standard CFI compatibility and TSOP footprint reduction. |
Compared with SST39VF010-70-4C-NHE and MX29LV1100TTC-70G, the AT29BV010A-12TC offers broader 2.7–3.6V operation and unique boot block lockout - making it preferable for legacy industrial systems with variable supply rails and strict bootloader protection requirements.
Availability
AT29BV010A-12TC is available at Aetrix Electronics and suitable for industrial PLC firmware storage, legacy PC BIOS modules, and medical device configuration memory requiring stable component supply across extended product lifecycles.
Supply support for AT29BV010A-12TC 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, nonvolatile memory, and secure authentication ICs, with headquarters in San Jose, CA.
The AT29BV010A-12TC belongs to Atmel's Battery-Voltage™ Flash family, engineered for single-supply in-system programmability in space- and power-constrained embedded systems - particularly targeting boot code storage in industrial and computing applications.
FAQ
What is the maximum read access time specified for the AT29BV010A-12TC?
The AT29BV010A-12TC has a maximum read access time of 120 ns, measured from address valid or CE/OE assertion to valid data on I/O0–I/O7. This timing is guaranteed across the commercial temperature range (0°C to 70°C) and supports direct connection to 8-bit microcontrollers operating up to 8 MHz without wait-state insertion. The "-12" suffix in the part number explicitly denotes this 120 ns speed grade.
Does the AT29BV010A-12TC require high-voltage programming signals?
No, the AT29BV010A-12TC does not require high-voltage programming signals. It operates with a single 2.7V to 3.6V supply for both read and write operations. Programming is enabled only after a three-byte software unlock sequence (AAh → 55h → A0h), and internal circuitry handles sector erase and programming automatically - eliminating the need for external VPP generators or complex voltage translation.
How many sectors does the AT29BV010A-12TC have, and what is the size of each sector?
The AT29BV010A-12TC contains 1024 sectors, each 128 bytes in size. This structure enables granular firmware updates: only the modified 128-byte sector needs erasure and reprogramming, minimizing update time and wear on unrelated memory regions. The sector address is selected using address lines A7–A16, while A0–A6 specify the byte offset within the sector.
What is the purpose of the two boot blocks in the AT29BV010A-12TC?
The AT29BV010A-12TC features two dedicated 8K-byte boot blocks - one at the lowest addresses (0x0000–0x1FFF) and one at the highest (0xF800–0xFFFF). Each can be independently locked via a software command sequence to prevent accidental erasure or reprogramming of critical bootloader code, ensuring system reliability during field firmware updates or power interruptions.
Can the AT29BV010A-12TC be used with a 5V microcontroller interface?
Yes, the AT29BV010A-12TC supports mixed-voltage interfacing: its address and control inputs (A0–A16, CE, OE, WE) tolerate 0–5.5V regardless of VCC level (2.7–3.6V), enabling direct connection to 5V microcontrollers without level shifters. However, I/O0–I/O7 are limited to 0–(VCC + 0.6V), so 5V-tolerant I/O operation requires VCC ≥ 4.4V - which is outside the device's specified range. Therefore, bidirectional data transfer must occur at the Flash's VCC level, typically using open-drain or level-shifting buffers for 5V systems.
AT29BV010A-12TC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 32-TFSOP (0.724", 18.40mm Width)
- Packaging:
- Tray
- 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:
- 0°C ~ 70°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-TSOP
AT29BV010A-12TC FAQ
1.How can I place an order for AT29BV010A-12TC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT29BV010A-12TC 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-12TC reliable?
The price and inventory of AT29BV010A-12TC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT29BV010A-12TC is usually 5 days.
3.What payment methods are accepted for AT29BV010A-12TC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT29BV010A-12TC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT29BV010A-12TC?
AT29BV010A-12TC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT29BV010A-12TC 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-12TC?
For technical support, including AT29BV010A-12TC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT29BV010A-12TC requirements.
6.How does Aetrix verify that AT29BV010A-12TC is sourced from the original manufacturer or authorized distributors?
All AT29BV010A-12TC 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-12TC meets industry standards.
7.What is the process for return or replacement of AT29BV010A-12TC?
All AT29BV010A-12TC units undergo pre-shipment inspection (PSI). If there is an issue with AT29BV010A-12TC, 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-12TC part is unused and in its original packaging.
Return procedure for AT29BV010A-12TC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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