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Microchip Technology AT49BV001-12JC
- Part No.:
- AT49BV001-12JC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-LCC (J-Lead)
- Datasheet:
-
AT49BV001-12JC.pdf
- Description:
- IC FLASH 1MBIT PARALLEL 32PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:3,494
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Product details
Overview
AT49BV001-12JC from Atmel is a 1 Mbit (128K × 8) single-supply 2.7–3.6 V in-system reprogrammable Flash memory with 120 ns read access time, sector-based architecture (16 KB boot block + two 8 KB parameter blocks + two main memory blocks), hardware data protection, and 10,000 write/erase cycles - used for firmware storage and boot code retention in embedded microcontroller systems.
For engineers reviewing the AT49BV001-12JC datasheet, AT49BV001-12JC pinout, AT49BV001-12JC application, or AT49BV001-12JC equivalent, key selection criteria include its PLCC-32 package, 120 ns access timing, boot block lockout capability, byte-programmability (30 µs/byte), and compatibility with standard microprocessor bus interfaces using CE/OE/WE control.
Technical Context
The AT49BV001-12JC implements a command-register-based programming model requiring six-byte sequences for chip/sector erase and boot lockout enable, with internal timing eliminating external clocks. Its sector architecture supports independent erasure of parameter blocks (8 KB each) and main memory blocks (32 KB and 64 KB), while the 16 KB boot block includes programmable lockout to preserve secure startup code.
Hardware protection includes VCC sense (<1.8 V inhibits programming), noise filtering (<15 ns pulses ignored), and control-line inhibition (OE low, CE high, or WE high blocks writes). End-of-program detection is supported via DATA polling (I/O7 complement) and Toggle Bit (I/O6 toggling), both usable at any point during operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 1 Mbit (131,072 × 8), organized as 128K words × 8 bits - sufficient for full bootloader + configuration data in resource-constrained systems. |
| Read Access Time | 120 ns maximum - defines minimum bus cycle time when interfacing with 8-bit microcontrollers or FPGAs operating up to ~8 MHz. |
| Supply Voltage | 2.7 V to 3.6 V - enables direct connection to 3.3 V logic rails without level shifting or charge pumps. |
| Byte Programming Time | 30 µs typical - allows rapid field updates of small firmware patches without system downtime. |
| Erase Cycle Time | 10 seconds max for full chip erase - deterministic timing simplifies host software timeout handling. |
| Endurance | 10,000 program/erase cycles - supports long-term field upgrades in industrial controllers and networking equipment. |
| Standby Current | 50 µA CMOS - enables ultra-low-power retention in battery-backed applications like smart meters. |
Pinout & Package
AT49BV001-12JC uses a 32-lead Plastic Leaded Chip Carrier (PLCC) package with J-leads, pin 1 marked by corner notch. Pin functions are standardized across PLCC, DIP, and TSOP variants per Atmel's datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit address bus supporting full 128K-word addressing; A0–A16 directly map to memory locations without decoding. |
| I/O0–I/O7 | Bi-directional Data Bus | 8-bit parallel interface compatible with 8-bit microcontrollers; supports read, program, and identification modes. |
| CE | Chip Enable | Active-low chip select; must be low with OE low and WE high for read access - prevents bus contention in multi-device systems. |
| OE | Output Enable | Active-low output control; used with CE to gate data onto bus - enables shared-bus arbitration without tri-state conflicts. |
| WE | Write Enable | Active-low write strobe; latches address/data on falling/rising edges per command sequence - critical for reliable command execution. |
| RESET | Reset Input | Active-low reset; halts ongoing operations and forces high-Z outputs - required for safe recovery after power-up or error conditions. |
| VCC / GND | Power Supply | Single 2.7–3.6 V supply; no separate VPP required - eliminates need for high-voltage generators in embedded designs. |
| DC / NC | No Connect | Pin 1 (PLCC) is DC (don't connect); not electrically bonded - must remain unconnected to avoid latch-up or timing faults. |
Key Features
| Feature | Design Value |
|---|---|
| Boot Block Programming Lockout | 16 KB protected region (00000H–03FFFH) prevents accidental overwrite of bootloader code once enabled via 6-byte command sequence. |
| Sector Erase Flexibility | Independent erasure of two 8 KB parameter blocks and two main memory blocks (32 KB/64 KB) enables modular firmware updates without full chip erase. |
| DATA Polling & Toggle Bit | Dual end-of-program detection methods (I/O7 complement and I/O6 toggle) eliminate need for fixed delays - improves system responsiveness and reliability. |
| Hardware Data Protection | VCC sense, noise filtering, and control-line inhibition prevent spurious writes during power transients or EMI events - critical for automotive and industrial environments. |
| Standard Microprocessor Interface | CE/OE/WE timing compliant with common 8-bit MPU buses (e.g., 8051, Z80, 68K) - enables drop-in replacement of EPROMs without logic redesign. |
Applications
| Industrial PLC Firmware Storage | Medical Device Bootloader Retention |
|---|---|
Use Scenario: Storing firmware and calibration tables in programmable logic controllers deployed in factory automation environments with wide temperature swings and electrical noise. IC Role / Device Role / Timing Role: Nonvolatile program memory providing fast 120 ns read access for real-time instruction fetch and secure boot code execution from protected 16 KB boot block. Use Value: Hardware lockout ensures bootloader integrity across 10,000+ field updates; low 50 µA standby current extends uptime in battery-buffered backup scenarios. | Use Scenario: Holding certified boot firmware and device-specific configuration in Class II medical instruments requiring regulatory-compliant data retention and update traceability. IC Role / Device Role / Timing Role: Secure, reprogrammable Flash memory with verified 10,000-cycle endurance and deterministic 10-second erase - meeting IEC 62304 software lifecycle requirements. Use Value: Sector architecture allows isolated updates of calibration data (parameter blocks) without disturbing validated bootloader code in the locked boot block. |
| Telecom Edge Router Configuration | Automotive Body Control Module (BCM) |
Use Scenario: Storing routing tables, protocol stacks, and fail-safe configuration in carrier-grade edge routers operating continuously in telecom central offices. IC Role / Device Role / Timing Role: High-reliability Flash memory interfaced via standard 8-bit bus; 2.7–3.6 V operation matches 3.3 V system rail; 120 ns access supports deterministic packet processing latency. Use Value: DATA polling enables precise program completion detection - reducing CPU polling overhead and improving throughput during remote firmware upgrades. | Use Scenario: Retaining vehicle-specific calibration maps and diagnostic routines in BCMs exposed to automotive temperature (-40°C to +85°C) and vibration stress. IC Role / Device Role / Timing Role: In-system reprogrammable nonvolatile memory with industrial temperature grade (–40°C to +85°C), enabling over-the-air updates and dealer reprogramming. Use Value: RESET pin override (12 V) allows emergency bootloader recovery even after lockout activation - satisfying ISO 16750-2 electrical robustness requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT49BV001-12JI | Same die and timing, but industrial temperature grade (–40°C to +85°C) and PDIP-32 package instead of PLCC-32. | Preferred for through-hole assembly or extended temperature operation where PLCC socketing is not required. | Select AT49BV001-12JI only if industrial temp range or DIP footprint is mandatory; otherwise AT49BV001-12JC offers superior board-level reliability in surface-mount systems. |
| AT49BV001T-12JC | Same PLCC-32 package and timing, but uses alternate sector map: boot block at 1C000H–1FFFFH instead of 00000H–03FFFH. | Requires firmware address remapping; incompatible for legacy designs relying on default boot block location. | Choose AT49BV001T-12JC only for new designs where relocated boot sector simplifies memory layout - not a drop-in replacement for AT49BV001-12JC. |
Compared with AT49BV001-12JI and AT49BV001T-12JC, the AT49BV001-12JC provides the standard boot block address (00000H–03FFFH) in the PLCC-32 package with commercial temperature rating - making it optimal for cost-sensitive, surface-mount embedded systems requiring proven layout compatibility and straightforward firmware integration.
Availability
AT49BV001-12JC is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device bootloader retention, and telecom edge router configuration requiring stable component supply and long-term obsolescence management.
Supply support for AT49BV001-12JC 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 AT49BV001 series was designed as a 3.3 V-compatible, in-system reprogrammable Flash memory family targeting cost-effective firmware storage in microcontroller-based systems with strict space and power constraints.
FAQ
What is the memory organization of the AT49BV001-12JC?
The AT49BV001-12JC contains 1 Mbit (131,072 × 8) of Flash memory organized as 128K words × 8 bits. It features a sector architecture comprising one 16 KB boot block (00000H–03FFFH), two 8 KB parameter blocks, and two main memory blocks (32 KB and 64 KB). This structure enables selective erasure and programming, which is essential for efficient firmware updates in the AT49BV001-12JC.
Does the AT49BV001-12JC require a high-voltage programming supply?
No, the AT49BV001-12JC operates with a single 2.7–3.6 V supply for both read and write operations. It does not require an external VPP voltage. All programming and erase functions are executed using standard 3.3 V logic levels and command sequences - a key design feature that simplifies power design and eliminates high-voltage circuitry in systems using the AT49BV001-12JC.
How is boot block protection enabled on the AT49BV001-12JC?
Boot block protection is enabled by executing a specific six-byte command sequence (AAh → 55h → 80h → AAh → 55h → 40h) to address 5555h. Once activated, the 16 KB boot block (00000H–03FFFH) becomes permanently write-protected at ≤5.5 V. The AT49BV001-12JC supports RESET pin override (12 V) for emergency reprogramming, but this requires external high-voltage circuitry.
What package type is used by the AT49BV001-12JC?
The AT49BV001-12JC uses a 32-lead Plastic Leaded Chip Carrier (PLCC) package with J-leads and a corner notch marking pin 1. This surface-mount package provides robust mechanical stability and thermal performance suitable for industrial applications. The AT49BV001-12JC's PLCC-32 footprint is identical to other members of the AT49BV/LV001 family, enabling layout reuse across speed grades.
Can the AT49BV001-12JC be used as a direct replacement for EPROMs?
Yes, the AT49BV001-12JC is pin- and function-compatible with standard 27C010 EPROMs in PLCC-32 packages. Its CE/OE/WE interface, read timing (120 ns), and 8-bit data bus allow drop-in replacement without PCB changes. However, unlike EPROMs, the AT49BV001-12JC supports in-system reprogramming and requires command sequences for erase/program - necessitating minor firmware adaptation.
AT49BV001-12JC 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)
AT49BV001-12JC FAQ
1.How can I place an order for AT49BV001-12JC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49BV001-12JC 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 AT49BV001-12JC reliable?
The price and inventory of AT49BV001-12JC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49BV001-12JC is usually 5 days.
3.What payment methods are accepted for AT49BV001-12JC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49BV001-12JC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49BV001-12JC?
AT49BV001-12JC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49BV001-12JC 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 AT49BV001-12JC?
For technical support, including AT49BV001-12JC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49BV001-12JC requirements.
6.How does Aetrix verify that AT49BV001-12JC is sourced from the original manufacturer or authorized distributors?
All AT49BV001-12JC 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 AT49BV001-12JC meets industry standards.
7.What is the process for return or replacement of AT49BV001-12JC?
All AT49BV001-12JC units undergo pre-shipment inspection (PSI). If there is an issue with AT49BV001-12JC, 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 AT49BV001-12JC part is unused and in its original packaging.
Return procedure for AT49BV001-12JC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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