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Microchip Technology AT27LV020A-12VI
- Part No.:
- AT27LV020A-12VI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-TFSOP (0.488", 12.40mm Width)
- Datasheet:
-
AT27LV020A-12VI.pdf
- Description:
- IC EPROM 2MBIT PARALLEL 32VSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,939
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Product details
Overview
AT27LV020A-12VI from Atmel is a 2-Mbit (256K × 8) one-time programmable EPROM optimized for low-voltage battery-powered systems, featuring 120 ns read access time, dual 3.0–3.6V or 4.5–5.5V supply operation, and industrial temperature range (−40°C to +85°C). It delivers 8 mA active current at 5 MHz and ≤20 µA standby current with VCC = 3.6V, and supports JEDEC-standard PLCC/TSOP/VSOP packages.
For engineers reviewing the AT27LV020A-12VI datasheet, AT27LV020A-12VI pinout, AT27LV020A-12VI application, or AT27LV020A-12VI equivalent, key selection criteria include OTP memory density, low-power 3V read capability, dual-supply compatibility, industrial-grade reliability, and Rapid™ programming support at 100 µs/byte.
Technical Context
The AT27LV020A-12VI implements a CMOS OTP EPROM architecture with two-line control (CE/OE), enabling bus contention avoidance in embedded systems. Its address space spans A0–A17 (18-bit), supporting 256K × 8 organization with TTL- and CMOS-compatible I/O levels across both voltage ranges.
It integrates product identification via A9/VH and A0 toggling for automated programming equipment recognition, and uses VPP = 13.0V during programming while maintaining strict sequencing requirements (VCC applied before/with VPP). Standby mode is activated by CE = VIH, yielding sub-1 µA typical ICC.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2,097,152 bits (256K × 8) - fixed OTP storage capacity for firmware or boot code |
| Read Access Time | 120 ns max - defines minimum clock cycle for reliable data fetch in microcontroller interfaces |
| Supply Voltage Range | 3.0–3.6V or 4.5–5.5V - enables interoperability with both modern low-voltage and legacy 5V systems |
| Standby Current | 20 µA max at VCC = 3.6V - ensures ultra-low power consumption in battery-backed or sleep-mode applications |
| Active Current | 8 mA max at 5 MHz, VCC = 3.6V - supports sustained read throughput without thermal or supply rail stress |
| Programming Speed | 100 µs/byte typical - reduces production programming time versus standard EPROMs |
| ESD Protection | 2,000V HBM - provides robust handling margin during board assembly and field service |
Pinout & Package
AT27LV020A-12VI is available in 32-lead VSOP (8 × 14 mm, JEDEC MO-142 BA), TSOP (8 × 20 mm, MO-142 BD), and PLCC (JEDEC MS-016 AE) packages. The VSOP variant (indicated by suffix 'V' in ordering code) is used for this part.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A17 | Address Inputs | 18-bit address bus interface; selects one of 256K bytes during read or program cycles |
| O0–O7 | Data Outputs | 8-bit bidirectional data path; outputs valid data when CE = OE = VIL and address stable |
| CE | Chip Enable | Primary device select; must be VIL for read/program; VIH places outputs in high-Z and enters standby |
| OE | Output Enable | Secondary output control; allows output gating independent of CE to prevent bus contention |
| PGM | Program Strobe | Active-low pulse input that initiates byte programming when VPP = 13.0V and CE = VIL |
| VPP | Programming Voltage | 13.0V ± 0.25V supply required only during programming; must be sequenced with VCC |
| VCC | Power Supply | 3.0–3.6V or 4.5–5.5V main supply; powers logic and I/O; also supplies VPP during non-program modes |
| GND | Ground Reference | Common return path for VCC, VPP, and signal I/O; requires local 0.1 µF ceramic decoupling |
Key Features
| Feature | Design Value |
|---|---|
| Rapid™ Programming Algorithm | 100 µs/byte typical programming time with auto-verify loop - cuts production burn-in time vs. conventional EPROMs |
| Dual-Voltage Read Operation | Functional across 3.0–3.6V and 4.5–5.5V - eliminates level-shifting in mixed-supply systems like PC cards or modular peripherals |
| Integrated Product ID Code | Manufacturer ID (0x1E) and Device Code (0x86) accessible via A9/VH and A0 toggle - enables automatic algorithm selection in universal programmers |
| Two-Line Control Architecture | Separate CE and OE inputs - permits flexible bus arbitration and partial memory mapping without external logic |
| High-Reliability Process | 2,000V ESD protection and 200 mA latchup immunity - meets industrial handling and surge immunity requirements |
Applications
| Industrial PLC Firmware Storage | 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: OTP EPROM providing nonvolatile instruction storage; accessed during cold start and watchdog recovery sequences. Use Value: Industrial temperature rating (−40°C to +85°C) and 2,000V ESD tolerance ensure reliable operation in electrically noisy plant-floor settings. |
Use Scenario: Holding certified bootloader and safety-critical initialization routines in portable diagnostic instruments with battery backup. IC Role / Device Role / Timing Role: Low-voltage (3.3V) read-only memory enabling direct connection to microcontroller I/O without level shifters. Use Value: 20 µA max standby current extends battery life between clinical calibrations; Rapid™ programming accelerates device certification testing. |
| Legacy Embedded System Upgrade | PCMCIA Card Memory Module |
|
Use Scenario: Replacing obsolete 5V EPROMs (e.g., AT27C020) in aging telecom infrastructure boards requiring no PCB redesign. IC Role / Device Role / Timing Role: Pin- and function-compatible drop-in replacement with identical PLCC/TSOP footprints and JEDEC timing. Use Value: Dual-supply operation allows seamless integration into existing 5V designs while enabling future low-power upgrades. |
Use Scenario: Providing fixed configuration data and vendor-specific identifiers in hot-pluggable PCMCIA Type II expansion cards. IC Role / Device Role / Timing Role: OTP memory mapped to card controller's address space; accessed during enumeration and initialization. Use Value: VSOP package (8 × 14 mm) meets PCMCIA height constraints; integrated ID code simplifies host-side device driver matching. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar OTP EPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT27C020-12JC | 5V-only operation (4.5–5.5V); no low-voltage mode; same 120 ns speed and 256K × 8 organization | Lacks 3V compatibility; unsuitable for battery-powered or mixed-supply systems | Select when legacy 5V-only design mandates exact footprint and timing match without low-voltage requirement |
| MX29LV020TC-12 | 3V-only flash memory (not OTP); supports erase/rewrite; 120 ns access; different command set and pinout | Enables field updates but requires redesign of programming infrastructure and timing control logic | Choose only if reprogrammability is essential and board layout can accommodate different pin assignments and VPP handling |
Compared with AT27C020-12JC, the AT27LV020A-12VI adds critical low-voltage operation and retains pin compatibility, while MX29LV020TC-12 offers rewrite capability at the cost of architectural divergence and loss of true OTP security.
Availability
AT27LV020A-12VI is available at Aetrix Electronics and suitable for industrial control systems, medical diagnostics equipment, and legacy system upgrades requiring stable component supply, long-term lifecycle support, and guaranteed OTP integrity.
Supply support for AT27LV020A-12VI 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 AT27LV020A-12VI belongs to Atmel's low-voltage OTP EPROM product line, designed specifically for portable, battery-operated, and dual-supply embedded systems where power efficiency and JEDEC compatibility are mandatory.
FAQ
What voltage ranges does the AT27LV020A-12VI support during normal read operation?
The AT27LV020A-12VI supports two distinct read voltage ranges: 3.0V to 3.6V for low-power battery applications and 4.5V to 5.5V for legacy 5V systems. Both ranges are fully specified for all AC and DC parameters including 120 ns access time and 8 mA active current. It does not operate reliably outside these ranges during read mode.
Is the AT27LV020A-12VI pin-compatible with the AT27C020 series?
Yes, the AT27LV020A-12VI is pin-compatible and functionally compatible with the AT27C020 family across all JEDEC-standard packages (PLCC, TSOP, VSOP). It shares identical pinout, address/data organization, CE/OE control logic, and programming methodology - enabling direct replacement in existing designs without layout changes.
What is the role of the VPP pin on the AT27LV020A-12VI, and when is it used?
The VPP pin on the AT27LV020A-12VI supplies 13.0V ± 0.25V exclusively during programming and verification cycles. It is unused (tied to VCC) during normal read operation. Strict sequencing is required: VCC must be applied before or simultaneously with VPP, and removed after or simultaneously with VPP to prevent device damage.
Does the AT27LV020A-12VI support rapid programming, and what is the typical speed?
Yes, the AT27LV020A-12VI implements Atmel's Rapid™ Programming Algorithm with a typical speed of 100 µs per byte. This includes automatic verify-and-reprogram loops up to 10 pulses per failing byte. The AT27LV020A-12VI achieves full programming in under 26 seconds for the entire 256K-byte array under nominal conditions.
How is the product identification code accessed on the AT27LV020A-12VI?
The AT27LV020A-12VI provides a two-byte identification code (Manufacturer ID = 0x1E, Device Code = 0x86) via its O0–O7 outputs. To read it, hold A1–A17 low, apply VH (11.5–12.5V) to A9, and toggle A0 between VIL and VIH while keeping CE = OE = VIL - each A0 state selects one byte of the ID.
AT27LV020A-12VI 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:
- 120 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-12VI FAQ
1.How can I place an order for AT27LV020A-12VI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT27LV020A-12VI 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-12VI reliable?
The price and inventory of AT27LV020A-12VI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT27LV020A-12VI is usually 5 days.
3.What payment methods are accepted for AT27LV020A-12VI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT27LV020A-12VI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT27LV020A-12VI?
AT27LV020A-12VI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT27LV020A-12VI 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-12VI?
For technical support, including AT27LV020A-12VI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT27LV020A-12VI requirements.
6.How does Aetrix verify that AT27LV020A-12VI is sourced from the original manufacturer or authorized distributors?
All AT27LV020A-12VI 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-12VI meets industry standards.
7.What is the process for return or replacement of AT27LV020A-12VI?
All AT27LV020A-12VI units undergo pre-shipment inspection (PSI). If there is an issue with AT27LV020A-12VI, 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-12VI part is unused and in its original packaging.
Return procedure for AT27LV020A-12VI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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