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Microchip Technology AT27BV512-15JC
- Part No.:
- AT27BV512-15JC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-LCC (J-Lead)
- Datasheet:
-
AT27BV512-15JC.pdf
- Description:
- IC EPROM 512KBIT PARALLEL 32PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:2,827
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Product details
Overview
AT27BV512-15JC from Atmel is a 64K × 8-bit (512 Kbit) one-time programmable EPROM optimized for low-voltage battery-powered systems, featuring 150 ns read access time, dual 2.7–3.6 V or 4.5–5.5 V supply operation, and JEDEC-standard 32-lead PLCC packaging. It serves as nonvolatile program storage in portable embedded controllers and legacy microprocessor systems requiring pin compatibility with AT27C512R.
For engineers reviewing the AT27BV512-15JC datasheet, AT27BV512-15JC pinout, AT27BV512-15JC application, or AT27BV512-15JC equivalent, key selection criteria include unregulated battery voltage support (2.7–3.6 V), rapid 100 µs/byte programming, <1 µA typical standby current at 3 V, TTL/LVBO interface compatibility, and industrial temperature range (-40°C to +85°C).
Technical Context
The AT27BV512-15JC implements a CMOS OTP EPROM architecture with two-line control (CE/OE/VPP), enabling bus contention avoidance in shared-memory systems. Its dual-voltage design supports both unregulated battery rails and standard 5 V logic interfaces without level shifters.
It uses Atmel's Rapid™ Programming Algorithm with 100 µs CE pulses and integrated product identification (Manufacturer ID = 0x1E, Device ID = 0x0D), ensuring compatibility with industry-standard programmers. Programming requires VCC = 6.5 V and OE/VPP = 13.0 V, while read mode operates across full JEDEC-compliant voltage ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 64K × 8 bits (524,288 bits), organized as byte-addressable nonvolatile storage |
| Read Access Time | 150 ns max at VCC = 2.7–3.6 V or 4.5–5.5 V - defines minimum CPU wait-state requirement |
| Supply Voltage Range | 2.7 V to 3.6 V (unregulated battery) or 4.5 V to 5.5 V (standard 5 V) - eliminates external regulators in portable designs |
| Standby Current | 20 µA max (CMOS mode), <1 µA typical at 3 V - extends battery life in sleep-mode systems |
| Active Power Consumption | 29 mW max at 5 MHz and VCC = 3.6 V - enables low-thermal footprint in dense PCB layouts |
| Programming Speed | 100 µs/byte typical using Rapid™ algorithm - reduces production programming cycle time |
| Input/Output Compatibility | JEDEC LVTTL and LVBO compliant - interoperates with 3.3 V and 5 V logic families without translation |
Pinout & Package
AT27BV512-15JC is supplied in a 32-lead Plastic Leaded Chip Carrier (PLCC) package per JEDEC MS-016 AE. Pin 1 and Pin 17 are designated "DON'T CONNECT" and must remain unconnected in layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A15 | Address Inputs | 16-bit address bus interface; latched on CE falling edge for memory location selection |
| O0–O7 | Data Outputs | Bi-directional data bus outputs during read; high-impedance when OE/VPP or CE inactive |
| CE | Chip Enable | Primary device select; active-low enable for read/program operations and standby entry |
| OE/VPP | Output Enable / Program Supply | Read mode: output enable (active-low); Program mode: 13 V programming voltage input |
| VCC | Power Supply | Single supply input supporting 2.7–3.6 V or 4.5–5.5 V operation; requires local 0.1 µF ceramic decoupling |
| GND | Ground | Reference return path for all signals and power; must be low-inductance connection per system EMI requirements |
| NC | No Connect | Pins 1 and 17 - physically present but electrically isolated; must not be soldered or routed |
Key Features
| Feature | Design Value |
|---|---|
| Dual-Voltage Read Operation | Supports direct connection to unregulated Li-ion or alkaline battery rails (2.7–3.6 V) or legacy 5 V systems - removes need for voltage regulation circuitry |
| Rapid™ Programming Algorithm | 100 µs/byte typical programming time with auto-verify loop - improves manufacturing throughput and field-programming reliability |
| Integrated Product ID Code | Manufacturer ID (0x1E) and Device ID (0x0D) accessible via A9/A0 toggling - enables automatic algorithm selection in universal programmers |
| JEDEC Pin Compatibility | Pin-for-pin identical to AT27C512R - allows drop-in replacement in existing 5 V designs with no PCB modification |
| Low-Power Standby Mode | 20 µA max ICC in CE-high state at 3.6 V - critical for always-on embedded systems with intermittent activity |
Applications
| Portable Data Logger | Industrial PLC Firmware Storage |
|---|---|
Use Scenario: Battery-powered environmental sensor node logging temperature/humidity at 10-second intervals, waking only to read/write flash and transmit via UART. IC Role / Device Role / Timing Role: Nonvolatile firmware and calibration table storage; accessed during boot and periodic configuration updates. Use Value: Unregulated 2.7–3.6 V operation eliminates DC/DC converter, reducing BOM cost and board area; <1 µA standby current extends 2xAA battery life beyond 5 years. |
Use Scenario: Fixed-mount programmable logic controller retaining ladder logic firmware across power cycles in factory automation cabinets. IC Role / Device Role / Timing Role: Primary boot code ROM; mapped into microcontroller address space at reset vector; read-only during runtime execution. Use Value: Industrial -40°C to +85°C rating ensures reliable operation in unconditioned control panels; 150 ns access time meets timing budget of 8-bit MCUs running at ≤6 MHz. |
| Legacy PC BIOS Backup | Medical Diagnostic Device Boot ROM |
Use Scenario: ISA-bus expansion card storing BIOS extension routines for retro-computing platforms or embedded x86 systems. IC Role / Device Role / Timing Role: Secondary code storage mapped into upper memory region; accessed via 16-bit address/data bus with CE/OE handshaking. Use Value: Pin compatibility with AT27C512R allows reuse of existing socket and layout; 5 V tolerance enables direct integration into legacy 5 V backplanes. |
Use Scenario: Portable ultrasound imaging module requiring certified, immutable boot firmware that survives repeated sterilization cycles and power loss. IC Role / Device Role / Timing Role: One-time programmable boot ROM verified at factory; prevents unauthorized firmware modification post-deployment. Use Value: OTP architecture provides tamper-evident integrity; 2,000 V HBM ESD rating withstands handling in clinical environments; JEDEC TSOP/SOIC alternatives available for compact form factor. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar OTP EPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT27C512R-70PC | 5 V only (4.5–5.5 V), 70 ns access, 28-pin PDIP; no battery-voltage support | Limited to fixed-power systems; lacks unregulated battery rail capability | Select when retrofitting legacy 5 V designs where board space allows DIP and power regulation is already present |
| M27C512-12F1 | 5 V only, 120 ns access, 28-pin SOIC; higher standby current (100 µA) | Lower speed grade; incompatible with rapid programming and product ID protocol | Choose for cost-sensitive industrial controls where 120 ns timing suffices and programming infrastructure is limited |
Compared with AT27BV512-15JC, AT27C512R-70PC offers faster access but no low-voltage operation, while M27C512-12F1 trades speed and programmability for lower unit cost in static 5 V environments - neither matches the AT27BV512-15JC's battery-native dual-voltage flexibility and integrated ID verification.
Availability
AT27BV512-15JC is available at Aetrix Electronics and suitable for portable instrumentation, industrial control firmware storage, and legacy system upgrades requiring stable component supply, long-term lifecycle assurance, and JEDEC-standard OTP EPROM functionality.
Supply support for AT27BV512-15JC 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) is a semiconductor manufacturer specializing in microcontrollers, nonvolatile memory, and secure authentication devices for embedded and industrial applications.
The AT27BV512-15JC belongs to Atmel's Battery-Voltage™ OTP EPROM product line, designed specifically to replace 5 V EPROMs in battery-powered and mixed-supply systems without sacrificing speed or compatibility.
FAQ
What is the maximum operating temperature range for the AT27BV512-15JC?
The AT27BV512-15JC is rated for industrial temperature operation from -40°C to +85°C. This specification is confirmed in the Ordering Information table and Absolute Maximum Ratings section of the official datasheet. The 'I' suffix in alternate part numbers (e.g., AT27BV512-15JI) explicitly denotes industrial grade, and the AT27BV512-15JC shares this qualification. Operation outside this range may result in data retention failure or parametric drift.
Does the AT27BV512-15JC require a separate programming voltage supply?
Yes - the AT27BV512-15JC requires VPP = 13.0 V ± 0.25 V applied to the OE/VPP pin during programming, while VCC is held at 6.5 V ± 0.25 V. During normal read operation, OE/VPP functions as an active-low output enable and connects directly to ground. The dual-role pin necessitates proper sequencing: VCC must be applied before and removed after OE/VPP to prevent latch-up.
Is the AT27BV512-15JC pin-compatible with the AT27C512R?
Yes - the AT27BV512-15JC is explicitly specified as pin compatible with the JEDEC-standard AT27C512R in its Features list and System Considerations section. Both share identical 32-lead PLCC pinout, address/data bus mapping, and CE/OE control logic. This allows direct substitution in existing AT27C512R-based designs, provided the system accommodates the AT27BV512-15JC's dual-voltage capability and programming voltage requirements.
What decoupling capacitance is required for stable operation of the AT27BV512-15JC?
The AT27BV512-15JC requires a minimum 0.1 µF high-frequency ceramic capacitor between VCC and GND, placed as close as possible to the device pins. For systems with multiple EPROMs or noisy power rails, a bulk 4.7 µF electrolytic capacitor should also be added near the power entry point. These values are mandated in the System Considerations section to suppress transient voltage excursions caused by CE switching, which could otherwise violate absolute maximum ratings.
Can the AT27BV512-15JC be used in a 3.3 V system with TTL-level peripherals?
Yes - at VCC = 3.0 V, the AT27BV512-15JC produces TTL-compatible output levels (VOH ≥ 2.4 V, VOL ≤ 0.4 V) and accepts standard TTL input thresholds. The datasheet confirms compatibility with JEDEC LVTTL and LVBO specifications. This allows direct interfacing with 3.3 V microcontrollers and logic families without level-shifting circuitry, simplifying design and reducing component count.
AT27BV512-15JC 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:
- EPROM
- Technology:
- EPROM - OTP
- Memory Size:
- 512Kbit
- Memory Organization:
- 64K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- -
- Access Time:
- 150 ns
- Voltage - Supply:
- 2.7V ~ 3.6V, 4.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-PLCC (13.97x11.43)
AT27BV512-15JC FAQ
1.How can I place an order for AT27BV512-15JC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT27BV512-15JC 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 AT27BV512-15JC reliable?
The price and inventory of AT27BV512-15JC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT27BV512-15JC is usually 5 days.
3.What payment methods are accepted for AT27BV512-15JC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT27BV512-15JC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT27BV512-15JC?
AT27BV512-15JC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT27BV512-15JC 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 AT27BV512-15JC?
For technical support, including AT27BV512-15JC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT27BV512-15JC requirements.
6.How does Aetrix verify that AT27BV512-15JC is sourced from the original manufacturer or authorized distributors?
All AT27BV512-15JC 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 AT27BV512-15JC meets industry standards.
7.What is the process for return or replacement of AT27BV512-15JC?
All AT27BV512-15JC units undergo pre-shipment inspection (PSI). If there is an issue with AT27BV512-15JC, 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 AT27BV512-15JC part is unused and in its original packaging.
Return procedure for AT27BV512-15JC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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