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Microchip Technology AT49BV001T-12JC
- Part No.:
- AT49BV001T-12JC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-LCC (J-Lead)
- Datasheet:
-
AT49BV001T-12JC.pdf
- Description:
- IC FLASH 1MBIT PARALLEL 32PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:2,859
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Product details
Overview
AT49BV001T-12JC from Atmel is a 1 Mbit (128K × 8) single-supply 3V-only Flash memory IC with 120 ns read access time, sector-based architecture (16KB boot block + two 8KB parameter blocks + two main memory blocks), and hardware data protection. It supports in-system reprogramming via standard CE/OE/WE control and is used in embedded firmware storage for industrial controllers requiring nonvolatile code retention and field-upgradable boot code.
For engineers reviewing the AT49BV001T-12JC datasheet, AT49BV001T-12JC pinout, AT49BV001T-12JC application, or AT49BV001T-12JC equivalent, this page delivers verified specifications, PLCC-32 package details, boot-block lockout behavior, sector erase timing, and direct alternatives for firmware storage design validation.
Technical Context
The AT49BV001T-12JC implements a CMOS-based NOR Flash architecture with internal program control logic and automatic erase timing. Its sector organization includes a relocatable 16KB boot block (address range 1C000H–1FFFFH), two 8KB parameter blocks, and two main memory blocks (32KB and 64KB), enabling selective erasure without full-chip reset.
It uses standard microprocessor bus interface timing with CE/OE/WE dual-line control to prevent bus contention, supports DATA polling and Toggle Bit methods for end-of-program detection, and features VCC sense, noise filtering, and program inhibit logic for hardware-level write protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 1 Mbit (131,072 × 8), organized as 128K words × 8 bits - supports full firmware image storage for 8-bit microcontrollers. |
| Read Access Time | 120 ns max - compatible with 8 MHz Z80 or 6502-based systems without wait states. |
| Supply Voltage | 2.7 V to 3.6 V - operates across battery-voltage ranges, eliminating need for level shifters in 3V systems. |
| Active Current | 25 mA typical - enables low-power operation during firmware reads in portable instrumentation. |
| Standby Current | 50 µA CMOS - ensures minimal quiescent draw in always-on industrial monitoring nodes. |
| Erase Cycle Time | 10 seconds max for full chip - allows predictable firmware update windows in field-deployed devices. |
| Endurance | 10,000 program/erase cycles - supports multi-year field upgrade cycles in PLCs and HMI modules. |
Pinout & Package
AT49BV001T-12JC is supplied in a 32-lead Plastic Leaded Chip Carrier (PLCC) package with J-leads, pin-compatible with industry-standard 32-pin PLCC footprints and socketable for programming and prototyping.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit address bus supporting full 128K-word addressing; A16 selects upper memory region including relocated boot block (1C000H–1FFFFH). |
| CE | Chip Enable | Active-low chip select; must be low with OE low and WE high for valid read access; enables bus sharing with other peripherals. |
| OE | Output Enable | Active-low output control; used with CE to manage data bus contention during mixed-read/write system operations. |
| WE | Write Enable | Active-low write strobe; latches address/data on falling/rising edges per command sequences; critical for byte programming and sector erase initiation. |
| I/O0–I/O7 | Data Input/Output | Bi-directional 8-bit data bus; carries command codes, product ID, and user data; supports DATA polling on I/O7 and Toggle Bit on I/O6. |
| RESET | Reset Input | Active-low reset; halts ongoing program/erase; applying 12 V ±0.5 V overrides boot block lockout - unique to T-suffix variants. |
| VCC / GND | Power Supply | Single 2.7–3.6 V supply; decoupling required within 1 cm of pins to maintain 120 ns timing integrity. |
| DC / NC | No Connect | Pin 1 (PLCC) is DC (don't connect); no internal connection - must remain unconnected to avoid latch-up or timing skew. |
Key Features
| Feature | Design Value |
|---|---|
| Relocated Boot Block | 16 KB boot sector at 1C000H–1FFFFH enables secure bootloader placement outside default 00000H region, preventing accidental overwrite during main firmware updates. |
| Boot Block Lockout | Software-enabled permanent write protection for boot code when activated; override possible only with 12 V on RESET - ensures system reliability while retaining field recovery capability. |
| Sector Erase Flexibility | Independent erase of two 8 KB parameter blocks and two main memory blocks (32 KB/64 KB) allows modular firmware partitioning and incremental updates without full reflash. |
| Hardware Write Protection | VCC sense (<1.8 V inhibits programming), noise filtering (<15 ns pulses ignored), and CE/OE/WE state monitoring prevent spurious writes during power transients or EMI events. |
| End-of-Operation Detection | DATA polling (I/O7 complement) and Toggle Bit (I/O6 toggling) provide software-controlled, timing-independent verification of program/erase completion - eliminates fixed delay loops in host firmware. |
Applications
| Industrial PLC Firmware Storage | Medical Device Bootloader Memory |
|---|---|
Use Scenario: Storing and updating ladder logic firmware in DIN-rail mounted programmable logic controllers operating in factory environments with wide temperature swings. IC Role / Device Role / Timing Role: Nonvolatile code storage with 120 ns read access and sector-erase capability; boot block holds certified safety startup routines protected from field updates. Use Value: Enables certified firmware version rollbacks and secure bootloader execution without external supervision, meeting IEC 61131-3 and UL 508 requirements. | Use Scenario: Holding FDA-cleared bootloader and calibration data in portable diagnostic equipment requiring traceable, tamper-resistant firmware storage. IC Role / Device Role / Timing Role: Secure boot memory with 12 V RESET override for emergency recovery; 16 KB boot block stores cryptographic keys and signature verification logic. Use Value: Supports 21 CFR Part 11 audit trails and prevents unauthorized firmware modification - critical for Class II medical device certification. |
| Automotive Body Control Module | Telecom Remote Node Configuration |
Use Scenario: Storing configuration tables and CAN protocol stacks in automotive BCMs exposed to -40°C to +85°C ambient conditions. IC Role / Device Role / Timing Role: Industrial-grade Flash memory with 50 µA standby current and 10,000-cycle endurance; boot block retains vehicle-specific VIN and calibration parameters. Use Value: Maintains EEPROM-like reliability with Flash density, reducing BOM count and enabling over-the-air (OTA) parameter updates without hardware change. | Use Scenario: Storing firmware images and network provisioning profiles in outdoor telecom remote radio units powered by solar/battery hybrid systems. IC Role / Device Role / Timing Role: Low-power 3V Flash with 50 µA CMOS standby; sector architecture isolates baseband firmware (main blocks) from carrier-specific settings (parameter blocks). Use Value: Extends battery life by >3 years in maintenance-free deployments while supporting carrier-specific field reconfiguration without full firmware reload. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT49BV001T-12JI | Same die and pinout, but rated for -40°C to +85°C industrial temperature range; 50 µA standby current identical, 25 mA active current identical. | Required for extended-temperature deployments (e.g., outdoor base stations, engine bay ECUs); not suitable for cost-sensitive commercial designs. | Select AT49BV001T-12JI when operating ambient exceeds 70°C or requires AEC-Q100 alignment; otherwise, AT49BV001T-12JC suffices for commercial-grade applications. |
| SST39VF010-70-4C-NHE | 1 Mbit Flash, 70 ns access, 3.0–3.6 V supply, PLCC-32; lacks boot block relocation (fixed 00000H–03FFFH), no 12 V RESET override, and uses different command set. | Compatible for basic firmware storage where boot block location is fixed and field recovery via 12 V is unnecessary; not suitable for systems requiring relocatable secure boot. | Choose SST39VF010-70-4C-NHE only if legacy design compatibility or lower unit cost is prioritized over boot block flexibility and 12 V recovery - verify command sequence mapping before substitution. |
Compared with AT49BV001T-12JI, the AT49BV001T-12JC trades extended temperature support for lower cost in commercial environments; compared with SST39VF010-70-4C-NHE, it provides relocatable boot block addressing and 12 V RESET override - critical for secure, upgradable embedded systems requiring field-recoverable boot code.
Availability
AT49BV001T-12JC is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device bootloader memory, and automotive body control module applications requiring stable component supply and long-term obsolescence management.
Supply support for AT49BV001T-12JC 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 ICs for embedded systems.
The AT49BV/LV001(N)(T) family was designed for in-system reprogrammable firmware storage in resource-constrained 8-bit and 16-bit embedded platforms, emphasizing boot security, sector granularity, and single-supply 3V operation.
FAQ
What is the boot block address range for AT49BV001T-12JC?
The AT49BV001T-12JC has its 16 KB boot block located at address range 1C000H to 1FFFFH - distinct from the base AT49BV001's 00000H–03FFFH range. This relocation avoids conflict with standard reset vectors and enables secure separation of bootloader and application code. The AT49BV001T-12JC supports boot block lockout activation via six-command sequence, and the lockout status can be verified by reading address 1C002H.
Does AT49BV001T-12JC support 12 V RESET override for boot block programming?
Yes, AT49BV001T-12JC supports 12 V ±0.5 V applied to the RESET pin to override boot block programming lockout during chip erase, sector erase, or byte programming. This feature is explicitly enabled in the T-suffix variant and is absent in N-suffix parts like AT49BV001N(T). The AT49BV001T-12JC must be returned to TTL levels after override to restore lockout protection.
What package type is used for AT49BV001T-12JC?
AT49BV001T-12JC uses a 32-lead Plastic Leaded Chip Carrier (PLCC) package (package code 32J), with J-leads and a 1.27 mm pitch. It is socket-compatible with standard PLCC-32 sockets and matches footprint dimensions of industry equivalents such as SST39VF010 and AM29LV010B, enabling drop-in replacement in existing layouts where voltage and timing align.
How does AT49BV001T-12JC handle end-of-program detection?
AT49BV001T-12JC provides two hardware-supported methods: DATA polling (I/O7 returns complement of loaded data until completion, then true data) and Toggle Bit (I/O6 toggles between 0 and 1 during operation, stops when complete). Both methods eliminate need for fixed delays in host firmware and are usable at any point during the 30–50 µs byte programming cycle. The AT49BV001T-12JC requires no external clocks or timers for reliable detection.
Is AT49BV001T-12JC compatible with 5 V systems?
No, AT49BV001T-12JC is a single 2.7–3.6 V supply device and is not 5 V tolerant. All inputs (including RESET, CE, OE, WE, and address lines) must remain within -0.6 V to VCC + 0.6 V per datasheet absolute maximum ratings. Applying 5 V to any pin risks permanent damage. For 5 V systems, level translation or selection of 5 V-compatible Flash (e.g., AT29C010) is required - AT49BV001T-12JC is strictly for 3 V embedded designs.
AT49BV001T-12JC 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:
- 50µs
- 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-PLCC (13.97x11.43)
AT49BV001T-12JC FAQ
1.How can I place an order for AT49BV001T-12JC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49BV001T-12JC 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 AT49BV001T-12JC reliable?
The price and inventory of AT49BV001T-12JC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49BV001T-12JC is usually 5 days.
3.What payment methods are accepted for AT49BV001T-12JC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49BV001T-12JC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49BV001T-12JC?
AT49BV001T-12JC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49BV001T-12JC 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 AT49BV001T-12JC?
For technical support, including AT49BV001T-12JC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49BV001T-12JC requirements.
6.How does Aetrix verify that AT49BV001T-12JC is sourced from the original manufacturer or authorized distributors?
All AT49BV001T-12JC 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 AT49BV001T-12JC meets industry standards.
7.What is the process for return or replacement of AT49BV001T-12JC?
All AT49BV001T-12JC units undergo pre-shipment inspection (PSI). If there is an issue with AT49BV001T-12JC, 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 AT49BV001T-12JC part is unused and in its original packaging.
Return procedure for AT49BV001T-12JC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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