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Microchip Technology AT49BV512-15JC
- Part No.:
- AT49BV512-15JC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-LCC (J-Lead)
- Datasheet:
-
AT49BV512-15JC.pdf
- Description:
- IC FLASH 512KBIT PARALLEL 32PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:2,981
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Product details
Overview
AT49BV512-15JC from Atmel is a 512 Kbit (64K × 8) single-supply 3V-only Flash memory IC with 150 ns maximum read access time, 8K-byte boot block featuring hardware lockout, and byte-programmable architecture for embedded firmware storage in microcontroller-based systems.
For engineers reviewing the AT49BV512-15JC datasheet, AT49BV512-15JC pinout, AT49BV512-15JC application, or AT49BV512-15JC equivalent, this page delivers verified timing specs, boot-block protection behavior, JEDEC-compliant PLCC-32 package details, and real-world reprogramming constraints including 10,000 write cycles and 10-second chip erase.
Technical Context
The AT49BV512-15JC implements a CMOS-based NOR Flash architecture with internal command register control, supporting software-triggered chip erase via six-byte command sequences and byte-level programming without external high-voltage supplies. Its dual-line chip enable (CE) and output enable (OE) logic enables bus contention avoidance in shared-memory systems.
It features DATA polling on I/O7 and toggle-bit detection on I/O6 to signal program/erase completion, alongside hardware data protection including VCC sense (<1.8V inhibition), noise filtering on WE/CE inputs, and program-inhibit logic tied to OE/CE/WE states.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 512 Kbit (64K × 8), directly addressable as 65,536 bytes |
| Read Access Time | 150 ns max - defines minimum clock period for synchronous read interfaces |
| Supply Voltage | 2.7V–3.6V only - eliminates need for dual-voltage rails or charge pumps |
| Byte Programming Time | 30 µs typical - determines firmware update latency per byte in field upgrades |
| Erase Cycle Time | 10 seconds max for full-chip erase - impacts system downtime during reprogramming |
| Write Endurance | 10,000 program/erase cycles - sets lifetime limit for dynamic configuration storage |
| Boot Block Size | 8K bytes (0000H–1FFFH) with permanent lockout - secures bootloader code against accidental overwrite |
| Standby Current | 50 µA CMOS - enables low-power retention in battery-backed applications |
Pinout & Package
AT49BV512-15JC is packaged in a 32-lead Plastic J-Leaded Chip Carrier (PLCC), JEDEC MS-016 variation AE compliant, with 1.27 mm pitch, 12.32–12.57 mm body length, and 13.90–14.05 mm body width. Pin 1 identifier is a corner chamfer.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A15 | Address Inputs | 16-bit address bus supporting full 64K-byte decoding; A0 least significant |
| I/O0–I/O7 | Bidirectional Data Bus | 8-bit parallel interface; latched on rising edge of CE or WE for writes |
| CE | Chip Enable | Active-low device select; must be low for read/write; high forces outputs to high-Z |
| OE | Output Enable | Active-low output gate; controls data assertion on I/O lines during reads |
| WE | Write Enable | Active-low write strobe; falling edge latches address; rising edge latches data |
| VCC | Power Supply | Single 2.7–3.6V supply; powers core logic and I/O buffers |
| GND | Ground Reference | Common return path for all signals and power; decoupling required near pin |
| NC | No Connect | Unbonded pins (positions 6, 14, 15, 25, 26); must remain unconnected |
Key Features
| Feature | Design Value |
|---|---|
| Single 3V-only operation | Eliminates need for 5V or 12V programming voltages - simplifies power design and PCB layout |
| Hardware boot block lockout | Irreversible 8K-byte protection (0000H–1FFFH) prevents bootloader corruption after activation |
| DATA polling & toggle-bit detection | Enables asynchronous end-of-write detection without timers or fixed delays in host firmware |
| Internal program timer & command register | Reduces host MCU overhead - no external timing circuits or state machines required |
| CMOS standby current | 50 µA at VCC = 3.3V - supports >1-year battery life in always-on embedded monitoring nodes |
| VCC sense protection | Blocks programming if supply drops below ~1.8V - prevents partial writes during brown-out |
Applications
| Industrial PLC Firmware Storage | Medical Device Bootloader Protection |
|---|---|
|
Use Scenario: Storing firmware images and calibration tables in programmable logic controllers deployed in factory automation environments with wide temperature swings. IC Role / Device Role / Timing Role: Nonvolatile code storage with guaranteed 10,000 write cycles and -40°C to +85°C industrial temperature rating (AT49BV512-15JI variant). Use Value: Boot block lockout ensures bootloader integrity across repeated field updates, reducing risk of bricking during remote firmware patches. |
Use Scenario: Securing boot code in portable diagnostic equipment where regulatory compliance requires immutable startup routines. IC Role / Device Role / Timing Role: Trusted execution anchor - 8K boot sector permanently protected post-activation to meet IEC 62304 software safety requirements. Use Value: Hardware-enforced lockout prevents malicious or erroneous overwrites, eliminating need for cryptographic signature verification in boot path. |
| Automotive Body Control Module | Legacy Industrial HMI Display |
|
Use Scenario: Holding configuration parameters and CAN message lookup tables in automotive BCMs operating under 12V battery-derived 3.3V rails. IC Role / Device Role / Timing Role: Parameter EEPROM replacement - leverages 2.7–3.6V operation to tolerate battery transients without reset or data loss. Use Value: 50 µA standby current extends sleep-mode battery life; DATA polling avoids CPU polling loops during flash writes. |
Use Scenario: Upgrading firmware in aging human-machine interface panels using RS-232 or parallel port programmers. IC Role / Device Role / Timing Role: Field-reprogrammable code store compatible with legacy EPROM programmers via identical pinout and read protocol. Use Value: 70–150 ns access times match EPROM timing windows, enabling drop-in replacement without redesigning address/data bus timing logic. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SST39VF512 | 512 Kbit, 3V, 90 ns access, PLCC-32; lacks boot block lockout feature | Requires external software management for bootloader protection | Choose when simpler command set and lower cost outweigh need for hardware lockout |
| MX29LV512 | 512 Kbit, 3V, 150 ns access, PLCC-32; includes 8K boot sector but uses different unlock sequence | Boot block protection requires vendor-specific 6-byte unlock; not pin-compatible command set | Choose when existing MXIC toolchain support exists and timing matches AT49BV512-15JC exactly |
Compared with SST39VF512 and MX29LV512, the AT49BV512-15JC uniquely combines guaranteed 150 ns read timing, hardware-enforced boot block lockout, and Atmel's standardized 6-byte erase/lock command set - making it optimal for safety-critical or long-lifecycle embedded systems requiring tamper-resistant firmware storage.
Availability
AT49BV512-15JC is available at Aetrix Electronics and suitable for industrial control systems, medical diagnostics equipment, and automotive body electronics requiring stable component supply and long-term obsolescence planning.
Supply support for AT49BV512-15JC 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, designed high-reliability nonvolatile memory and microcontroller solutions for industrial, automotive, and communications markets.
The AT49BV512-15JC belongs to Atmel's Battery-Voltage™ Flash family, engineered specifically for single-supply embedded systems needing field-upgradable firmware with hardware-level data integrity guarantees.
FAQ
What is the maximum read access time specified for the AT49BV512-15JC?
The AT49BV512-15JC has a maximum read access time of 150 ns, measured from address valid to valid data output under commercial temperature conditions (0°C to 70°C). This parameter is guaranteed across the full 2.7V–3.6V supply range and defines the fastest supported bus cycle for reliable read operations in the AT49BV512-15JC.
Does the AT49BV512-15JC require high-voltage programming signals?
No, the AT49BV512-15JC operates exclusively from a single 2.7V–3.6V supply and uses only standard logic-level commands for programming and erasure. All operations - including chip erase, byte programming, and boot block lockout - are executed via six-byte software command sequences applied to specific address/data combinations, eliminating the need for external 12V or 5V programming voltages in the AT49BV512-15JC.
How is boot block protection implemented in the AT49BV512-15JC?
The AT49BV512-15JC provides hardware-enforced boot block lockout for the 8K-byte region at addresses 0000H–1FFFH. Once activated via a specific six-byte command sequence (5555h/AAh → 2AAAh/55h → 5555h/80h → 5555h/AAh → 2AAAh/55h → 5555h/40h), the boot sector becomes permanently read-only - no further erase or program operations are possible. This irreversible protection is verified by reading I/O0 at address 00002h in product ID mode, confirming lock status in the AT49BV512-15JC.
What package type does the AT49BV512-15JC use?
The AT49BV512-15JC uses a 32-lead Plastic J-Leaded Chip Carrier (PLCC) package, designated as 32J per Atmel's ordering information. It complies with JEDEC MS-016, Variation AE, with dimensions of 12.32–12.57 mm × 13.90–14.05 mm and 1.27 mm lead pitch. Pin 1 is identified by a corner chamfer, and NC pins (6, 14, 15, 25, 26) must remain unconnected in the AT49BV512-15JC layout.
Can the AT49BV512-15JC be used in industrial temperature applications?
Yes, the AT49BV512-15JC is rated for industrial temperature operation (-40°C to +85°C) when ordered with the 'I' suffix (e.g., AT49BV512-15JI). The 'J' in AT49BV512-15JC indicates the PLCC package; the 'C' denotes commercial temperature grade (0°C to 70°C). For industrial use, specify AT49BV512-15JI - same electrical specs and timing, extended thermal qualification, confirmed in the AT49BV512-15JC datasheet's DC and AC Operating Range table.
AT49BV512-15JC 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:
- 512Kbit
- Memory Organization:
- 64K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 30µs
- Access Time:
- 150 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)
AT49BV512-15JC FAQ
1.How can I place an order for AT49BV512-15JC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49BV512-15JC 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 AT49BV512-15JC reliable?
The price and inventory of AT49BV512-15JC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49BV512-15JC is usually 5 days.
3.What payment methods are accepted for AT49BV512-15JC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49BV512-15JC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49BV512-15JC?
AT49BV512-15JC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49BV512-15JC 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 AT49BV512-15JC?
For technical support, including AT49BV512-15JC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49BV512-15JC requirements.
6.How does Aetrix verify that AT49BV512-15JC is sourced from the original manufacturer or authorized distributors?
All AT49BV512-15JC 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 AT49BV512-15JC meets industry standards.
7.What is the process for return or replacement of AT49BV512-15JC?
All AT49BV512-15JC units undergo pre-shipment inspection (PSI). If there is an issue with AT49BV512-15JC, 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 AT49BV512-15JC part is unused and in its original packaging.
Return procedure for AT49BV512-15JC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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