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Microchip Technology AT27LV020A-15VI
- Part No.:
- AT27LV020A-15VI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-TFSOP (0.488", 12.40mm Width)
- Datasheet:
-
AT27LV020A-15VI.pdf
- Description:
- IC EPROM 2MBIT PARALLEL 32VSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,200
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Product details
Overview
AT27LV020A-15VI from Atmel is a 2-Mbit (256K × 8) one-time programmable EPROM optimized for low-voltage battery-powered systems, featuring 150 ns read access time at 3.0–3.6 V or 4.5–5.5 V, dual-supply compatibility, and industrial temperature range (−40°C to +85°C). It supports JEDEC-standard two-line control (CE/OE), delivers TTL-compatible outputs at 3.0 V, and integrates Rapid™ programming (100 µs/byte).
For engineers reviewing the AT27LV020A-15VI datasheet, AT27LV020A-15VI pinout, AT27LV020A-15VI application, or AT27LV020A-15VI equivalent, this page provides verified package mapping (32-lead PLCC), confirmed standby current (20 µA max at VCC = 3.6 V), JEDEC-compliant timing modes, OTP programming voltage requirements (VPP = 13.0 V), and industrial-grade reliability specs including 2,000 V ESD protection.
Technical Context
The AT27LV020A-15VI implements a CMOS-based OTP EPROM architecture with address decoding for 18-bit address space (A0–A17), eight bidirectional data outputs (O0–O7), and dedicated PGM and VPP pins for high-voltage programming. Its two-line control logic (CE/OE) enables bus contention avoidance in shared-memory systems.
It operates across two distinct supply regimes: low-voltage mode (3.0–3.6 V) with sub-1 µA typical standby current and 90 ns access at 3.0 V, and standard 5 V ±10% mode with 25 mA active current at 5 MHz. Programming requires VCC = 6.5 V and VPP = 13.0 V, with integrated product identification (Manufacturer ID = 0x1E, Device ID = 0x86) accessible via A9/VH and A0 toggling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2,097,152 bits (256K × 8), fixed OTP configuration - no reprogramming after initial write. |
| Read Access Time | 150 ns max at VCC = 3.0–3.6 V or 4.5–5.5 V - defines minimum clock cycle for reliable read in microcontroller boot ROM or firmware storage. |
| Supply Voltage Range | 3.0–3.6 V or 4.5–5.5 V - enables direct use in mixed-voltage systems without level shifters. |
| Standby Current | 20 µA max at VCC = 3.6 V - ensures ultra-low power retention in portable devices during sleep mode. |
| Programming Voltage | VPP = 13.0 ± 0.25 V - requires external high-voltage source; not compatible with standard 5 V-only programmers. |
| ESD Protection | 2,000 V HBM - meets industrial handling requirements without additional protection circuitry. |
| Operating Temperature | −40°C to +85°C - qualified for industrial embedded control, automotive body electronics, and outdoor instrumentation. |
Pinout & Package
AT27LV020A-15VI is supplied in a 32-lead Plastic Leaded Chip Carrier (PLCC) package per JEDEC MS-016 AE, with lead pitch of 1.27 mm and body size 18.5 × 18.5 mm. Pin 1 is marked by index notch and corner chamfer.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A17 | Address Inputs | 18-bit parallel address bus - selects one of 256K bytes; all must be stable before CE/OE assertion. |
| O0–O7 | Data Outputs | CMOS/TTL-compatible 8-bit data bus - tri-stated when OE or CE inactive; drives standard logic loads directly. |
| CE | Chip Enable | Active-low global enable - controls device power state; transition to VIH places device in standby (≤20 µA). |
| OE | Output Enable | Active-low output gate - allows multiple devices on same data bus without contention when disabled. |
| PGM | Program Strobe | Active-low pulse input - initiates byte programming when VPP = 13.0 V and VCC = 6.5 V; 100 µs width required. |
| VPP | Programming Voltage | High-voltage supply pin - must be ramped with VCC; decoupled with 0.1 µF ceramic capacitor to ground. |
| VCC | Power Supply | Main supply - supports dual-range operation; must be applied simultaneously with or before VPP. |
| GND | Ground Reference | Signal and power return - requires local 0.1 µF ceramic + remote 4.7 µF bulk capacitor per system layout guidelines. |
| NC | No Connect | Unbonded internal pad - left floating; no external connection permitted. |
Key Features
| Feature | Design Value |
|---|---|
| Rapid™ Programming Algorithm | 100 µs/byte typical - reduces production programming time by >5× vs. legacy EPROMs; includes auto-verify loop up to 10 pulses per byte. |
| Dual-Voltage Read Operation | 3.0–3.6 V or 4.5–5.5 V - eliminates need for separate 3.3 V and 5 V regulators in hybrid systems. |
| Integrated Product ID Code | Manufacturer ID = 0x1E, Device ID = 0x86 - enables automatic algorithm selection in industry-standard programmers (e.g., BP Microsystems, Xeltek). |
| Two-Line Control Interface | CE + OE only - simplifies memory interface logic versus three-control (CE/OE/WE) SRAM or flash devices. |
| TTL-Compatible Outputs at 3.0 V | VOH ≥ 2.4 V, VOL ≤ 0.4 V at IOL = 2.1 mA - allows direct interfacing with 5 V microcontrollers without level translation. |
Applications
| Industrial PLC Firmware Storage | Medical Device Boot ROM |
|---|---|
Use Scenario: Fixed firmware image stored in programmable ROM for programmable logic controllers deployed in factory automation environments with wide ambient temperature swings. IC Role / Device Role / Timing Role: Non-volatile boot code storage with guaranteed read stability over −40°C to +85°C and immunity to power interruption during operation. Use Value: Eliminates need for external voltage supervisors or backup batteries; 2,000 V ESD rating ensures robustness in electrically noisy plant-floor settings. |
Use Scenario: Certified boot loader and safety-critical initialization code for Class II medical instruments requiring long-term data integrity and traceable manufacturing. IC Role / Device Role / Timing Role: One-time programmable ROM holding immutable startup routines validated under IEC 62304; no field update capability prevents unauthorized modification. Use Value: Meets regulatory requirement for unalterable firmware; rapid programming enables efficient lot-level traceability coding during final test. |
| Automotive Body Control Module | Test Equipment Configuration Memory |
Use Scenario: Storing calibration tables and vehicle-specific configuration data in door module ECUs where reprogrammability is unnecessary and cost sensitivity is high. IC Role / Device Role / Timing Role: Low-power OTP memory providing deterministic 150 ns read latency for real-time CAN message processing and actuator control loops. Use Value: 20 µA max standby current extends battery life in always-on modules; dual-voltage support simplifies integration into 5 V legacy harnesses. |
Use Scenario: Holding instrument-specific calibration constants and test sequence definitions in automated bench testers used in semiconductor final test houses. IC Role / Device Role / Timing Role: Factory-programmed reference data store accessed during power-up self-test; immune to accidental overwrite during routine operation. Use Value: Integrated product ID enables automated verification of correct ROM version during tester qualification; PLCC package allows socketed replacement without soldering. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar OTP EPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT27C020-15JC | 5 V-only operation (4.5–5.5 V); no low-voltage mode; identical pinout and timing (150 ns) | Requires dedicated 5 V rail; unsuitable for battery-powered or mixed-voltage designs | Select when system lacks 3.3 V supply and full 5 V compatibility is guaranteed |
| MX29LV160CBTI-90G | 16 Mbit flash (2M × 8), 3.0–3.6 V only, 90 ns access, JEDEC-compliant command set | Field-reprogrammable; requires software-controlled erase/write cycles and status polling | Choose only if firmware updates are required post-deployment; adds complexity but enables field upgrades |
Compared with AT27LV020A-15VI, AT27C020-15JC offers identical timing and footprint but sacrifices low-voltage flexibility, while MX29LV160CBTI-90G trades OTP simplicity for reprogrammability at higher density and faster access - neither is pin-compatible nor drop-in, and both require PCB and firmware changes.
Availability
AT27LV020A-15VI is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device boot ROM, and automotive body control module applications requiring stable component supply, long-lifecycle assurance, and industrial-temperature qualification.
Supply support for AT27LV020A-15VI 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, non-volatile memory, and secure authentication ICs for industrial, automotive, and consumer markets.
The AT27LV020A-15VI belongs to Atmel's low-voltage OTP EPROM product line, designed specifically for cost-sensitive, battery-operated, and mixed-voltage embedded systems where firmware immutability, low static power, and JEDEC interoperability are critical.
FAQ
What is the maximum operating voltage for VPP on the AT27LV020A-15VI?
The AT27LV020A-15VI requires VPP = 13.0 ± 0.25 V during programming, with absolute maximum rating of +14.0 V. Exceeding this risks permanent damage to the oxide layer. The AT27LV020A-15VI must never be operated with VPP tied to VCC; it must be supplied independently and ramped synchronously with VCC per datasheet timing rules.
Does the AT27LV020A-15VI support true 3.3 V logic interfacing without level shifters?
Yes - the AT27LV020A-15VI produces TTL-compatible outputs (VOH ≥ 2.4 V, VOL ≤ 0.4 V) when powered at VCC = 3.0 V, enabling direct connection to 5 V microcontrollers and FPGAs. Input thresholds (VIL ≤ 0.8 V, VIH ≥ 2.0 V) also meet LVTTL specifications, making the AT27LV020A-15VI fully interoperable in mixed-voltage buses.
Can the AT27LV020A-15VI be used in place of the AT27C020 in existing designs?
The AT27LV020A-15VI is functionally and pinout-compatible with the AT27C020, sharing identical address/data/control signals and programming algorithms. However, the AT27LV020A-15VI adds 3.0–3.6 V operation and lower power - if the host system supplies only 5 V, the AT27LV020A-15VI works identically; if 3.3 V is available, it reduces standby current by >95%.
What decoupling capacitors are required for stable operation of the AT27LV020A-15VI?
The AT27LV020A-15VI requires a 0.1 µF ceramic capacitor placed between VCC and GND, mounted as close as possible to the device pins. For systems with multiple EPROMs, a 4.7 µF bulk electrolytic capacitor must also be placed near the power entry point. These values are mandatory per Atmel's system considerations to suppress transients during CE transitions and ensure data sheet compliance.
Is the AT27LV020A-15VI RoHS compliant and halogen-free?
Yes - the AT27LV020A-15VI was manufactured by Atmel prior to its acquisition by Microchip and conforms to RoHS Directive 2011/65/EU. Lead-free PLCC packaging and halogen-free molding compound were standard for industrial-grade variants like the AT27LV020A-15VI, with full material declarations available through Microchip's component database.
AT27LV020A-15VI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 32-TFSOP (0.488", 12.40mm Width)
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EPROM
- Technology:
- EPROM - OTP
- Memory Size:
- 2Mbit
- Memory Organization:
- 256K 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-VSOP
AT27LV020A-15VI FAQ
1.How can I place an order for AT27LV020A-15VI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT27LV020A-15VI 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 AT27LV020A-15VI reliable?
The price and inventory of AT27LV020A-15VI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT27LV020A-15VI is usually 5 days.
3.What payment methods are accepted for AT27LV020A-15VI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT27LV020A-15VI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT27LV020A-15VI?
AT27LV020A-15VI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT27LV020A-15VI 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 AT27LV020A-15VI?
For technical support, including AT27LV020A-15VI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT27LV020A-15VI requirements.
6.How does Aetrix verify that AT27LV020A-15VI is sourced from the original manufacturer or authorized distributors?
All AT27LV020A-15VI 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 AT27LV020A-15VI meets industry standards.
7.What is the process for return or replacement of AT27LV020A-15VI?
All AT27LV020A-15VI units undergo pre-shipment inspection (PSI). If there is an issue with AT27LV020A-15VI, 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 AT27LV020A-15VI part is unused and in its original packaging.
Return procedure for AT27LV020A-15VI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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