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Microchip Technology AT27LV512A-70JC
- Part No.:
- AT27LV512A-70JC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-LCC (J-Lead)
- Datasheet:
-
AT27LV512A-70JC.pdf
- Description:
- IC EPROM 512KBIT PARALLEL 32PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:1,797
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Product details
Overview
AT27LV512A-70JC from Atmel is a 64K × 8-bit one-time programmable EPROM (OTP EPROM) with 70 ns 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, making it suitable for battery-powered portable systems requiring low-power nonvolatile storage.
For engineers reviewing the AT27LV512A-70JC datasheet, AT27LV512A-70JC pinout, AT27LV512A-70JC application, or AT27LV512A-70JC equivalent, key selection criteria include its single-supply 3.3 V read capability, 20 µA max standby current, JEDEC-compatibility with AT27C512R, industrial temperature range support, and PLCC package mechanical footprint.
Technical Context
The AT27LV512A-70JC implements a CMOS OTP EPROM architecture with two-line control (CE/OE), enabling bus contention prevention in shared-memory systems. Its address decoding covers A0–A15 (16-bit), and output drivers support both CMOS and LVTTL logic levels across voltage ranges.
It features integrated product identification (Manufacturer ID = 0x1E, Device ID = 0x0D) accessed via A9 = 12.0 V and A0 toggling, ensuring compatibility with industry-standard programmers. Programming requires VCC = 6.5 V and OE/VPP = 13.0 V, using a verified Rapid™ algorithm with up to 10 pulses per byte.
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 storage. |
| Read Access Time | 70 ns max at VCC = 3.0–3.6 V - enables direct interface with 14 MHz microcontrollers without wait states. |
| Supply Voltage Range | 3.0–3.6 V or 4.5–5.5 V - supports dual-voltage system designs and hot-plug compatibility between 3.3 V and 5 V hosts. |
| Standby Current | 20 µA max at VCC = 3.6 V - reduces quiescent power in always-on embedded modules. |
| Programming Speed | 100 µs/byte typical - cuts production programming time by >5× versus legacy EPROMs. |
| ESD Protection | 2,000 V HBM - meets IEC 61000-4-2 Level 2 for robust handling in manufacturing environments. |
| Operating Temperature | -40°C to +85°C - qualified for industrial-grade applications including motor control and instrumentation. |
Pinout & Package
AT27LV512A-70JC uses a 32-lead Plastic Leaded Chip Carrier (PLCC) package per JEDEC MS-016 AE. Pins 1 and 17 are No Connect (NC). Pin 1 is identified by index mark; lead pitch is 1.27 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A15 | Address Inputs | 16-bit address bus interface; latched on CE falling edge - supports full 64K memory map decoding. |
| O0–O7 | Data Outputs | 8-bit bidirectional data bus; high-impedance when CE or OE/VPP high - prevents bus contention in multi-device systems. |
| CE | Chip Enable | Active-low chip select; controls device activation and standby entry - used for memory banking and power gating. |
| OE/VPP | Output Enable / Program Supply | Dual-function pin: low during read (output enable), 13.0 V during programming (VPP supply) - eliminates need for external VPP switching. |
| VCC | Power Supply | Primary supply input; must be applied before/with OE/VPP - ensures safe power sequencing during programming. |
| GND | Ground Reference | Signal and power return path; decoupling capacitor required within 5 mm - critical for noise immunity in high-speed reads. |
Key Features
| Feature | Design Value |
|---|---|
| Rapid™ Programming Algorithm | 100 µs/byte typical programming time with automatic verify/reprogram loop - reduces production line cycle time and improves yield. |
| Integrated Product ID Code | Manufacturer ID = 0x1E, Device ID = 0x0D - enables auto-detection and algorithm selection in universal programmers. |
| Two-Line Control Architecture | Separate CE and OE/VPP pins - allows independent control of chip select and output driver enable, simplifying timing-critical memory interfacing. |
| TTL-Compatible Outputs at 3.0 V | VOH ≥ 2.4 V, VOL ≤ 0.4 V driving 2.0 mA - permits direct connection to 5 V TTL logic without level shifters in mixed-voltage systems. |
| JEDEC-Standard Packaging | 32J PLCC footprint - ensures drop-in replacement compatibility with existing AT27C512R-based PCB layouts. |
Applications
| Industrial PLC Firmware Storage | Medical Device Boot ROM |
|---|---|
Use Scenario: Storing immutable boot firmware and calibration tables in programmable logic controllers operating in harsh factory environments. IC Role / Device Role / Timing Role: Nonvolatile boot memory providing deterministic 70 ns read access to initialize FPGA configuration and real-time OS kernel. Use Value: Industrial temperature rating (-40°C to +85°C) and 2,000 V ESD protection ensure reliable startup after repeated thermal cycling and EMI exposure. |
Use Scenario: Holding certified diagnostic firmware and safety-critical initialization routines in portable ultrasound and infusion pump controllers. IC Role / Device Role / Timing Role: OTP EPROM acting as tamper-resistant firmware vault with guaranteed data retention over 10+ years. Use Value: One-time programmability prevents field updates that could compromise regulatory compliance (IEC 62304 Class B). |
| Legacy System Emulation Module | Automotive Diagnostic Tool Memory |
Use Scenario: Replacing obsolete 27C512 EPROMs in retro computing hardware and arcade board upgrades. IC Role / Device Role / Timing Role: Pin- and function-compatible drop-in replacement supporting identical address/data bus timing and 5 V operation. Use Value: Dual-voltage support (3.3 V/5 V) and JEDEC SOIC/TSOP/PLCC packaging allow reuse of legacy PCB footprints without redesign. |
Use Scenario: Storing vehicle-specific diagnostic protocol stacks and CAN message lookup tables in handheld OBD-II scanners. IC Role / Device Role / Timing Role: Read-only memory mapped into microcontroller address space for fast protocol table lookups during live bus monitoring. Use Value: Low 20 µA standby current extends battery life in cordless diagnostic tools; 70 ns access enables real-time response to CAN frame triggers. |
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); no 3.3 V support; same 70 ns speed and PLCC-28 package. | Lacks dual-voltage flexibility; unsuitable for battery-powered or mixed-supply systems. | Select only when legacy 5 V-only design constraints prohibit voltage scaling. |
| MX29LV512CTI-70G | 3 V flash memory (not OTP); supports 100K erase/write cycles; 32-pin TSOP package; 70 ns access. | Field-upgradable firmware capability; higher endurance but increased complexity and cost. | Choose when firmware updates are required post-deployment; not suitable for true OTP security requirements. |
Compared with AT27C512R-70PC and MX29LV512CTI-70G, the AT27LV512A-70JC uniquely balances low-voltage operation, OTP security, and JEDEC compatibility - making it optimal for cost-sensitive, unchangeable firmware deployments where 3.3 V integration and industrial reliability are mandatory.
Availability
AT27LV512A-70JC is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device boot ROM, and legacy system emulation modules requiring stable component supply, long-term lifecycle assurance, and JEDEC-standard PLCC packaging.
Supply support for AT27LV512A-70JC 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 ICs.
The AT27LV512A-70JC belongs to Atmel's low-voltage OTP EPROM product line, designed specifically for portable, battery-operated, and dual-voltage embedded systems requiring secure, unalterable firmware storage with industrial-grade reliability.
FAQ
What is the maximum standby current specification for AT27LV512A-70JC?
The AT27LV512A-70JC has a maximum standby current of 20 µA at VCC = 3.6 V and CE = VCC ± 0.3 V (CMOS mode). Typical standby current is less than 1 µA at 3.3 V, enabling ultra-low-power operation in sleep-mode embedded systems. This value is measured under specified DC conditions per the official Atmel datasheet Rev. 0607B.
Can AT27LV512A-70JC operate reliably at 3.0 V supply voltage?
Yes, the AT27LV512A-70JC is fully specified for operation at 3.0 V to 3.6 V, delivering guaranteed 70 ns read access time even at the minimum 3.0 V supply. Its TTL-compatible outputs (VOH ≥ 2.4 V, VOL ≤ 0.4 V) remain valid at 3.0 V, allowing direct interfacing with 5 V logic families without level translation circuitry.
Does AT27LV512A-70JC require external VPP programming voltage?
No - the AT27LV512A-70JC uses an internal charge pump and accepts VPP directly on the OE/VPP pin at 13.0 V ± 0.25 V during programming. This eliminates the need for external VPP generation circuitry, simplifying programmer design and reducing BOM count. The OE/VPP pin serves dual roles: output enable during read and programming supply during write.
Is AT27LV512A-70JC pin-compatible with AT27C512R?
Yes, the AT27LV512A-70JC is JEDEC-compatible with the AT27C512R and shares identical pinouts across PLCC, SOIC, and TSOP packages. It supports the same programming algorithms and equipment, enabling drop-in replacement in existing designs - provided the system accommodates the lower 3.3 V operating range and updated power sequencing requirements.
What package type does AT27LV512A-70JC use, and are pins 1 and 17 connected?
The AT27LV512A-70JC uses a 32-lead Plastic Leaded Chip Carrier (PLCC) package designated "32J" per Atmel's ordering information. Pins 1 and 17 are explicitly marked as No Connect (NC) in the datasheet and must remain unconnected in PCB layout - routing or soldering to these pins may cause functional failure or damage.
AT27LV512A-70JC 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:
- 70 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-70JC FAQ
1.How can I place an order for AT27LV512A-70JC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT27LV512A-70JC 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-70JC reliable?
The price and inventory of AT27LV512A-70JC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT27LV512A-70JC is usually 5 days.
3.What payment methods are accepted for AT27LV512A-70JC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT27LV512A-70JC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT27LV512A-70JC?
AT27LV512A-70JC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT27LV512A-70JC 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-70JC?
For technical support, including AT27LV512A-70JC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT27LV512A-70JC requirements.
6.How does Aetrix verify that AT27LV512A-70JC is sourced from the original manufacturer or authorized distributors?
All AT27LV512A-70JC 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-70JC meets industry standards.
7.What is the process for return or replacement of AT27LV512A-70JC?
All AT27LV512A-70JC units undergo pre-shipment inspection (PSI). If there is an issue with AT27LV512A-70JC, 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-70JC part is unused and in its original packaging.
Return procedure for AT27LV512A-70JC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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