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Microchip Technology AT27LV512A-15JC
- Part No.:
- AT27LV512A-15JC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-LCC (J-Lead)
- Datasheet:
-
AT27LV512A-15JC.pdf
- Description:
- IC EPROM 512KBIT PARALLEL 32PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:4,054
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Product details
Overview
AT27LV512A-15JC from Atmel is a 512 Kbit (64K × 8) one-time programmable EPROM with 150 ns maximum read access time, dual-voltage operation (3.0–3.6 V or 4.5–5.5 V), and JEDEC-standard 32-lead PLCC packaging. It delivers TTL-compatible outputs at 3.0 V and supports rapid programming at 100 µs/byte, serving as nonvolatile program storage in battery-powered embedded controllers and legacy industrial firmware systems.
For engineers reviewing the AT27LV512A-15JC datasheet, AT27LV512A-15JC pinout, AT27LV512A-15JC application, or AT27LV512A-15JC equivalent, key selection criteria include its 150 ns read timing under 3.3 V supply, <20 µA standby current, JEDEC-compliant PLCC-32 footprint, and compatibility with standard AT27C512R programming infrastructure.
Technical Context
The AT27LV512A-15JC implements a CMOS OTP EPROM architecture with two-line control (CE/OE/VPP), enabling bus contention avoidance in shared-memory systems. Its dual-supply design allows direct interoperability with both 3.3 V logic and 5 V host systems without level-shifting.
It uses Atmel's Rapid™ Programming Algorithm requiring VCC = 6.5 V and OE/VPP = 13.0 V for programming, while maintaining full read functionality at 3.0–3.6 V or 4.5–5.5 V. Product identification is implemented via dedicated A9 and A0 pins to select manufacturer and device code bytes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 524,288 bits (64K × 8) - fixed OTP storage capacity for firmware boot code or configuration data |
| Read Access Time | 150 ns max at VCC = 3.0–3.6 V - defines worst-case latency for instruction fetch in microcontroller systems |
| Supply Voltage Range | 3.0–3.6 V or 4.5–5.5 V - enables drop-in replacement in mixed-voltage legacy designs |
| Standby Current | 20 µA max at VCC = 3.6 V - ensures ultra-low power retention in battery-backed applications |
| Programming Speed | 100 µs/byte typical - reduces production programming cycle time versus conventional EPROMs |
| Output Compatibility | LVTTL-compliant - drives standard 5 V TTL loads directly when operating at 3.0 V VCC |
| ESD Protection | 2,000 V HBM - meets industrial handling requirements without additional protection circuitry |
Pinout & Package
AT27LV512A-15JC is housed in a 32-lead plastic J-leaded chip carrier (PLCC) per JEDEC MS-016 AE, with pin 1 and pin 17 designated as no-connect (NC). The package supports surface-mount reflow and socket-based programming.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A15 | Address Inputs | 16-bit address bus interface; selects one of 64K byte locations during read or program cycles |
| O0–O7 | Data Outputs | 8-bit bidirectional data bus; outputs valid data during read mode, high-impedance otherwise |
| CE | Chip Enable | Active-low global enable; controls device activation and entry into standby mode when high |
| OE/VPP | Output Enable / Program Supply | Dual-function pin: low = output enable during read; 13.0 V = programming voltage input during write |
| VCC | Power Supply | Primary supply input; must be applied before/with OE/VPP and removed after OE/VPP to prevent latchup |
| GND | Ground Reference | Signal and power return path; requires local 0.1 µF ceramic decoupling per device |
| NC (Pins 1, 17) | No Connect | Physically present but internally unconnected; must remain floating or tied to GND per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Rapid™ Programming Algorithm | 100 µs/byte typical programming time with automatic verify-and-reprogram loop up to 10 pulses per byte |
| Integrated Product ID Code | Manufacturer ID (0x1E) and Device Code (0x0D) accessible via A9 = 12.0 V and A0 toggling - enables auto-detection by programmers |
| Two-Line Control Architecture | Separate CE and OE/VPP signals eliminate bus contention during partial memory access or multi-device sharing |
| JEDEC Standard Pinout | Pin-compatible with AT27C512R across PLCC, SOIC, and TSOP packages - simplifies migration from 5 V EPROMs |
| High-Reliability CMOS Process | 200 mA latchup immunity and 2,000 V ESD protection - suitable for industrial environments without external protection |
Applications
| Industrial PLC Firmware Storage | Legacy Medical Device Boot ROM |
|---|---|
|
Use Scenario: Storing immutable boot firmware and calibration tables in programmable logic controllers deployed in factory automation environments. IC Role / Device Role / Timing Role: Nonvolatile program memory providing deterministic 150 ns instruction fetch timing during cold start and runtime recovery. Use Value: Dual-voltage support allows reuse across 3.3 V and 5 V controller boards; 20 µA standby current extends battery backup life during power loss events. |
Use Scenario: Holding certified diagnostic firmware and safety-critical initialization routines in Class II medical instruments with long product lifecycles. IC Role / Device Role / Timing Role: One-time programmable ROM ensuring firmware integrity and preventing field tampering or accidental overwrite. Use Value: Rapid programming enables efficient final-test programming; JEDEC PLCC-32 footprint ensures compatibility with existing rework and test fixtures. |
| Automotive Body Control Module EEPROM Emulation | Avionics Data Configuration Memory |
|
Use Scenario: Providing static configuration data (e.g., door lock logic, lighting profiles) in automotive body control units where flash endurance is insufficient. IC Role / Device Role / Timing Role: OTP storage replacing wear-limited flash in cost-sensitive modules requiring guaranteed 10+ year data retention. Use Value: Industrial temperature range (-40°C to +85°C) and 2,000 V ESD rating meet automotive EMC requirements without added protection components. |
Use Scenario: Storing flight-critical configuration parameters and hardware identity codes in airborne navigation subsystems subject to DO-254 compliance. IC Role / Device Role / Timing Role: High-reliability, radiation-tolerant OTP memory used for immutable system identity and startup parameter sets. Use Value: Product ID code enables automated verification during avionics burn-in; 150 ns access time satisfies real-time initialization timing budgets. |
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 operation (4.5–5.5 V); 70 ns access time; 28-pin PDIP package | Requires 5 V supply only; lacks low-voltage capability and PLCC-32 footprint | Select when board already uses 5 V rails and through-hole assembly is preferred |
| MX29LV512CTI-15G | 3 V flash memory (not OTP); 150 ns access; 32-pin TSOP; supports erase/rewrite | Field-upgradable but lower data retention (20 years vs. indefinite OTP); higher standby current (10 µA typical) | Select only if firmware updates are required post-deployment; not a drop-in replacement due to command-set and timing differences |
Compared with AT27LV512A-15JC, AT27C512R-70PC offers faster access but no low-voltage support or PLCC-32 compatibility, while MX29LV512CTI-15G provides reprogrammability at the cost of reduced reliability and different control signaling - making AT27LV512A-15JC optimal for immutable, mixed-voltage, surface-mount firmware storage.
Availability
AT27LV512A-15JC is available at Aetrix Electronics and suitable for industrial PLC firmware storage, legacy medical device boot ROM, and automotive body control module EEPROM emulation requiring stable component supply across extended product lifecycles.
Supply support for AT27LV512A-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 was a U.S.-based semiconductor company specializing in microcontrollers, nonvolatile memory, and security ICs before its acquisition by Microchip Technology in 2016. Its legacy memory products emphasize reliability and JEDEC compliance.
The AT27LV512A-15JC belongs to Atmel's LV-series OTP EPROM family, designed specifically for low-power, mixed-voltage embedded systems requiring guaranteed firmware immutability and long-term data retention without refresh.
FAQ
What is the maximum read access time specified for the AT27LV512A-15JC?
The AT27LV512A-15JC has a maximum read access time of 150 ns when operating at VCC = 3.0–3.6 V or 4.5–5.5 V. This value is guaranteed across the commercial temperature range (0°C to 70°C) and reflects the worst-case propagation delay from address valid to stable data output under specified load and timing conditions.
Can the AT27LV512A-15JC operate with a 3.3 V supply and drive 5 V TTL logic?
Yes, the AT27LV512A-15JC operates within a 3.0–3.6 V supply range and produces LVTTL-compatible outputs that meet VOH ≥ 2.4 V and VOL ≤ 0.4 V at IOL = 2.0 mA - fully compatible with standard 5 V TTL inputs without level-shifting circuitry.
What package type does the AT27LV512A-15JC use, and are pins 1 and 17 connected?
The AT27LV512A-15JC uses a 32-lead plastic J-leaded chip carrier (PLCC) per JEDEC MS-016 AE. Pins 1 and 17 are explicitly designated as no-connect (NC) and must remain unconnected or tied to ground per layout recommendations - they serve no internal function.
How does programming the AT27LV512A-15JC differ from standard 5 V EPROMs?
The AT27LV512A-15JC uses the same programming algorithm and equipment as the AT27C512R but requires VCC = 6.5 V and OE/VPP = 13.0 V during programming. Its Rapid™ algorithm applies 100 µs CE pulses with automatic verify-and-reprogram loops, achieving 100 µs/byte typical speed without changing programmer firmware.
Does the AT27LV512A-15JC support product identification, and how is it accessed?
Yes, the AT27LV512A-15JC includes an integrated product identification code. To read it, hold A1–A15 low, apply VH = 12.0 ± 0.5 V to A9, and toggle A0 between VIL and VIH to select Manufacturer ID (0x1E) or Device Code (0x0D) - both match the AT27C512R for programmer compatibility.
AT27LV512A-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:
- 3V ~ 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)
AT27LV512A-15JC FAQ
1.How can I place an order for AT27LV512A-15JC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT27LV512A-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 AT27LV512A-15JC reliable?
The price and inventory of AT27LV512A-15JC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT27LV512A-15JC is usually 5 days.
3.What payment methods are accepted for AT27LV512A-15JC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT27LV512A-15JC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT27LV512A-15JC?
AT27LV512A-15JC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT27LV512A-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 AT27LV512A-15JC?
For technical support, including AT27LV512A-15JC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT27LV512A-15JC requirements.
6.How does Aetrix verify that AT27LV512A-15JC is sourced from the original manufacturer or authorized distributors?
All AT27LV512A-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 AT27LV512A-15JC meets industry standards.
7.What is the process for return or replacement of AT27LV512A-15JC?
All AT27LV512A-15JC units undergo pre-shipment inspection (PSI). If there is an issue with AT27LV512A-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 AT27LV512A-15JC part is unused and in its original packaging.
Return procedure for AT27LV512A-15JC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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