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Microchip Technology AT27LV512A-15JI
- Part No.:
- AT27LV512A-15JI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-LCC (J-Lead)
- Datasheet:
-
AT27LV512A-15JI.pdf
- Description:
- IC EPROM 512KBIT PARALLEL 32PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:2,996
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Product details
Overview
AT27LV512A-15JI from Atmel is a 64K × 8-bit one-time programmable EPROM (OTP EPROM) operating at 3.0–3.6V or 4.5–5.5V, with 150 ns maximum read access time, 20 µA max standby current at 3.6V, and JEDEC-standard 32-lead PLCC packaging. It serves as nonvolatile program storage in battery-powered portable systems requiring low-voltage operation and TTL/CMOS compatibility.
For engineers reviewing the AT27LV512A-15JI datasheet, AT27LV512A-15JI pinout, AT27LV512A-15JI application, or AT27LV512A-15JI equivalent, key selection criteria include dual-voltage support (3.3V/5V), industrial temperature range (−40°C to +85°C), rapid programming (100 µs/byte), JEDEC-compatibility with AT27C512R, and PLCC package mechanical fit for legacy socketed designs.
Technical Context
The AT27LV512A-15JI implements a standard OTP EPROM architecture with two-line control (CE and OE/VPP), enabling bus contention avoidance in multi-device systems. Its address decoding covers A0–A15 (16-bit), supporting full 64K-byte addressing, and outputs O0–O7 drive LVTTL-compatible levels under both 3.3V and 5V supply conditions.
Programming requires VCC = 6.5V and OE/VPP = 13.0V, using a Rapid™ algorithm with 100 µs CE pulses and verification loops per byte. Product identification is accessed via A9 = 12.0V and A0 toggled, returning manufacturer code 0x1E and device code 0x0D - identical to AT27C512R for programming equipment compatibility.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 524,288 bits (64K × 8), fixed OTP configuration - no rewrites, ideal for firmware boot code or calibration data storage. |
| Read Access Time | 150 ns max at VCC = 3.0–3.6V or 4.5–5.5V - meets timing budgets for 6–7 MHz system clocks in embedded controllers. |
| Supply Voltage Range | 3.0–3.6V or 4.5–5.5V - enables direct integration into dual-rail systems without level shifters. |
| Standby Current | 20 µA max at 3.6V (typical <1 µA) - supports ultra-low-power sleep modes in portable instrumentation. |
| Operating Temperature | −40°C to +85°C - qualified for industrial-grade deployment in motor drives and PLC modules. |
| ESD Protection | 2,000V HBM - ensures robustness during board handling and field service in factory automation environments. |
| Package Type | 32-lead PLCC (JEDEC MS-016 AE) - provides socket-compatible replacement path for legacy AT27C512R-based designs. |
Pinout & Package
AT27LV512A-15JI uses a 32-lead Plastic Leaded Chip Carrier (PLCC) package per JEDEC MS-016 AE. Pins 1 and 17 are No Connect (NC). The package is lead-free compatible and designed for surface-mount reflow or socket insertion.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A15 | Address Inputs | 16-bit address bus interface; fully decoded to select one of 65,536 bytes - no internal address multiplexing required. |
| O0–O7 | Data Outputs | Bi-directional data bus outputs; LVTTL-compatible (VOH ≥ 2.4V, VOL ≤ 0.4V) at both 3.3V and 5V supplies. |
| CE | Chip Enable | Active-low chip select; controls device activation and power state - assertion enables read or program mode. |
| OE/VPP | Output Enable / Program Supply | Dual-function pin: low = output enable during read; 13.0V = programming voltage input during OTP write. |
| VCC | Power Supply | Primary supply input (3.0–3.6V or 4.5–5.5V); must be applied before/with OE/VPP to prevent latch-up. |
| GND | Ground Reference | Signal and power return path; decoupling capacitor (0.1 µF ceramic) required adjacent to this pin. |
Key Features
| Feature | Design Value |
|---|---|
| Rapid™ Programming Algorithm | 100 µs/byte typical programming time with built-in verify-reprogram loop - reduces production burn-in cycle time by >5× vs conventional EPROMs. |
| Integrated Product ID Code | Manufacturer ID 0x1E and Device ID 0x0D returned via A9=12V/A0 toggle - enables automatic algorithm selection in industry-standard programmers. |
| Dual-Voltage Read Operation | Full functionality at 3.0–3.6V or 4.5–5.5V - eliminates need for external voltage translators in mixed-supply backplanes. |
| Two-Line Control Architecture | Independent CE and OE/VPP pins - allows flexible bus arbitration and partial memory disable without external logic. |
| High-Reliability CMOS Process | 200 mA latchup immunity and 2,000V ESD rating - sustains operation in electrically noisy industrial enclosures. |
Applications
| Industrial PLC Firmware Storage | Medical Device Boot ROM |
|---|---|
Use Scenario: Storing immutable boot firmware and safety-critical configuration tables in programmable logic controllers deployed in factory-floor environments. IC Role / Device Role / Timing Role: Nonvolatile program memory providing deterministic startup sequence execution on power-up. Use Value: Industrial temperature rating (−40°C to +85°C) and 200 mA latchup immunity ensure reliable operation amid motor drive EMI and thermal cycling. |
Use Scenario: Holding certified bootloader and diagnostic routines in Class II medical instruments requiring traceable, unalterable firmware. IC Role / Device Role / Timing Role: OTP EPROM used as root-of-trust memory - prevents unauthorized runtime modification of critical startup code. Use Value: One-time programmability guarantees firmware integrity; 2,000V ESD protection supports safe handling during clinical device servicing. |
| Portable Test Equipment Calibration Data | Legacy Industrial Controller Upgrade |
Use Scenario: Storing factory-calibrated ADC/DAC coefficients and sensor linearization tables in handheld multimeters and oscilloscopes. IC Role / Device Role / Timing Role: Low-power OTP storage accessed only during instrument initialization - minimizes battery drain. Use Value: 1 µA typical standby current at 3.3V extends battery life; 3.0–3.6V operation matches Li-ion battery discharge profile. |
Use Scenario: Replacing obsolete AT27C512R in existing industrial controller PCBs where socketed PLCC footprint is retained. IC Role / Device Role / Timing Role: Pin- and function-compatible drop-in upgrade offering lower power and dual-voltage flexibility. Use Value: Identical PLCC-32 package and JEDEC-compliant timing (150 ns tACC) enables zero-layout-change migration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar OTP EPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT27C512R-15JC | 5V-only operation (4.5–5.5V); no 3.3V support; same 150 ns tACC and PLCC-32 package. | Lacks low-voltage capability - unsuitable for battery-powered or dual-rail systems. | Select when legacy 5V-only design requires exact form-fit-function replacement with no voltage rail changes. |
| MX29LV512CTI-15G | 3.3V-only Flash (not OTP); 150 ns access; 32-pin TSOP - not PLCC; supports erase/rewrite. | Field-upgradable firmware capability but higher cost and different package footprint. | Select only if firmware updateability is required and PCB layout can accommodate TSOP instead of PLCC. |
Compared with AT27C512R-15JC, AT27LV512A-15JI adds 3.3V operation and cuts standby current by >90%, while MX29LV512CTI-15G trades OTP security for field reprogrammability and requires board redesign due to TSOP packaging.
Availability
AT27LV512A-15JI is available at Aetrix Electronics and suitable for industrial PLCs, portable test equipment, and medical diagnostics devices requiring stable component supply across extended product lifecycles.
Supply support for AT27LV512A-15JI 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 fabless semiconductor company specializing in microcontrollers, nonvolatile memory, and secure authentication ICs.
The AT27LV512A belongs to Atmel's low-voltage OTP EPROM product line, engineered for portable and industrial systems needing reliable, low-power, socket-compatible firmware storage without rewrite capability.
FAQ
What is the operating temperature range for the AT27LV512A-15JI?
The AT27LV512A-15JI 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 Atmel datasheet. The industrial grade qualification makes AT27LV512A-15JI suitable for deployment in motor control cabinets, outdoor instrumentation, and factory automation hardware where ambient temperatures exceed commercial limits.
Does the AT27LV512A-15JI support both 3.3V and 5V operation?
Yes, the AT27LV512A-15JI supports dual-voltage operation: 3.0–3.6V for low-power portable use and 4.5–5.5V for compatibility with legacy 5V systems. This is explicitly stated in the Features and DC Operating Conditions sections. The AT27LV512A-15JI delivers TTL-compatible outputs at both supply ranges, eliminating level-shifting components when interfacing with mixed-voltage logic families.
Is the AT27LV512A-15JI pin-compatible with the AT27C512R?
Yes, the AT27LV512A-15JI uses the same 32-lead PLCC package and identical pinout as the AT27C512R, including matching signal names (A0–A15, O0–O7, CE, OE/VPP), NC locations (pins 1 and 17), and electrical timing definitions. The datasheet confirms JEDEC compatibility and identical programming methodology, making AT27LV512A-15JI a direct drop-in upgrade for AT27C512R in socketed designs.
What programming voltage is required for the AT27LV512A-15JI?
The AT27LV512A-15JI requires OE/VPP = 13.0 ± 0.25V and VCC = 6.5 ± 0.25V during programming, as specified in the DC Programming Characteristics table. These voltages are applied simultaneously with strict sequencing: VCC must be present before OE/VPP and removed after it. The AT27LV512A-15JI uses the same programming algorithm and equipment as AT27C512R, leveraging its integrated product ID code for automatic setup.
What is the standby current specification for the AT27LV512A-15JI?
The AT27LV512A-15JI has a maximum standby current of 20 µA at VCC = 3.6V (with CE = VCC ± 0.3V), and typical consumption is less than 1 µA. This value is documented in the DC Operating Characteristics table under ISB1 (CMOS). The ultra-low standby draw makes AT27LV512A-15JI appropriate for battery-backed systems where months of shelf life or sleep-mode longevity are required.
AT27LV512A-15JI 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:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-PLCC (13.97x11.43)
AT27LV512A-15JI FAQ
1.How can I place an order for AT27LV512A-15JI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT27LV512A-15JI 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-15JI reliable?
The price and inventory of AT27LV512A-15JI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT27LV512A-15JI is usually 5 days.
3.What payment methods are accepted for AT27LV512A-15JI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT27LV512A-15JI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT27LV512A-15JI?
AT27LV512A-15JI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT27LV512A-15JI 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-15JI?
For technical support, including AT27LV512A-15JI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT27LV512A-15JI requirements.
6.How does Aetrix verify that AT27LV512A-15JI is sourced from the original manufacturer or authorized distributors?
All AT27LV512A-15JI 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-15JI meets industry standards.
7.What is the process for return or replacement of AT27LV512A-15JI?
All AT27LV512A-15JI units undergo pre-shipment inspection (PSI). If there is an issue with AT27LV512A-15JI, 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-15JI part is unused and in its original packaging.
Return procedure for AT27LV512A-15JI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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