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Microchip Technology AT27LV020A-15VC
- Part No.:
- AT27LV020A-15VC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-TFSOP (0.488", 12.40mm Width)
- Datasheet:
-
AT27LV020A-15VC.pdf
- Description:
- IC EPROM 2MBIT PARALLEL 32VSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,623
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Product details
Overview
AT27LV020A-15VC 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-voltage operation, and JEDEC-standard PLCC/TSOP/VSOP packaging. It serves as nonvolatile program storage in embedded controllers and portable instrumentation.
For engineers reviewing the AT27LV020A-15VC datasheet, AT27LV020A-15VC pinout, AT27LV020A-15VC application, or AT27LV020A-15VC equivalent, this page delivers verified timing specs, package mapping, OTP programming behavior, standby current (≤20 µA), and JEDEC-compliant interface compatibility with TTL and CMOS logic families.
Technical Context
The AT27LV020A-15VC implements a standard OTP EPROM architecture with two-line control (CE/OE), supporting fast random-access reads and Rapid™ programming at 100 µs/byte. Its address space spans A0–A17 (18-bit), delivering 262,144 bytes of user-programmable memory with output data bus O0–O7.
It operates across two distinct supply regimes: low-voltage mode (3.0–3.6 V) for portable applications and standard 5 V ±10% mode for legacy system compatibility. Programming requires VCC = 6.5 V and VPP = 13.0 V, with integrated product identification (Manufacturer ID = 0x1E, Device ID = 0x86) for automated programmer recognition.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2,097,152 bits (256K × 8), fixed OTP configuration - no erase capability, suitable for firmware boot code or calibration tables. |
| Read Access Time | 150 ns max at VCC = 3.0–3.6 V or 4.5–5.5 V - meets timing budgets for 6.7 MHz synchronous bus interfaces. |
| Supply Voltage Range | 3.0–3.6 V or 4.5–5.5 V - enables dual-voltage host system interoperability without level-shifting circuitry. |
| Standby Current | 20 µA max (CMOS CE mode) at VCC = 3.6 V - supports ultra-low-power sleep states in battery-operated devices. |
| Active Power Dissipation | 29 mW max at 5 MHz and VCC = 3.6 V - reduces thermal load and extends battery life versus 5 V EPROM equivalents. |
| Programming Voltage | VPP = 13.0 V ±0.25 V required during programming - mandates dedicated high-voltage supply or charge-pump circuitry in programmers. |
| ESD Protection | 2,000 V HBM - provides robust handling margin during board assembly and field service. |
Pinout & Package
AT27LV020A-15VC is supplied in a 32-lead VSOP (8 × 14 mm) package per JEDEC MO-142 BA, with gull-wing leads and index mark on top surface. Pin 1 is located at bottom-left corner when notch faces up.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A17 | Address Inputs | 18-bit address bus accepting latched addresses for byte-level random access; all inputs TTL/CMOS compatible. |
| O0–O7 | Data Outputs | 8-bit bidirectional data bus in read mode; high-impedance (Hi-Z) during standby or output disable. |
| CE | Chip Enable | Active-low chip select - controls device activation; transition to VIH places device in standby with ≤20 µA ICC. |
| OE | Output Enable | Active-low output gate - enables data bus drivers only when CE is also active; prevents bus contention. |
| PGM | Program Strobe | Active-low pulse input (100 µs width) initiating byte programming under VPP = 13.0 V conditions. |
| VPP | Programming Voltage | 13.0 V supply pin - must be applied simultaneously with or after VCC and removed simultaneously or before VCC. |
| VCC | Power Supply | Primary supply (3.0–3.6 V or 4.5–5.5 V); powers logic and I/O; supplies current up to 8 mA in active read mode. |
| GND | Ground Reference | Signal and power return path; requires local 0.1 µF ceramic decoupling capacitor per device. |
| NC | No Connect | Unbonded internal pad - must remain unconnected on PCB; no electrical function or routing. |
Key Features
| Feature | Design Value |
|---|---|
| Rapid™ Programming Algorithm | 100 µs/byte typical programming time with auto-verify loop - reduces production programming cycle time by >5× vs conventional EPROMs. |
| Two-Line Control Interface | Dedicated CE and OE pins - enables clean bus arbitration and eliminates need for external gating logic in multi-device systems. |
| Integrated Product Identification Code | Manufacturer ID (0x1E) and Device ID (0x86) accessible via A9/VH and A0 toggle - ensures correct algorithm selection in universal programmers. |
| JEDEC Standard Compatibility | Pin- and function-compatible with AT27C020 - allows drop-in replacement in existing 5 V designs with no layout changes. |
| Low-Voltage TTL-Level Outputs | VOH ≥ 2.4 V at IOL = –2.0 mA with VCC = 3.0 V - directly drives standard TTL inputs without level translation. |
Applications
| Industrial PLC Firmware Storage | Portable Medical Device Boot ROM |
|---|---|
Use Scenario: Storing fixed ladder logic firmware and I/O configuration tables in DIN-rail mounted programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile program memory providing deterministic 150 ns read latency for real-time scan-cycle execution. Use Value: Dual-voltage support allows same BOM across 24 VDC (5 V mode) and 12 VDC (3.3 V mode) PLC variants without redesign. |
Use Scenario: Holding boot loader and safety-critical initialization routines in handheld ECG monitors powered by Li-ion batteries. IC Role / Device Role / Timing Role: OTP EPROM serving as immutable root-of-trust memory; accessed during cold start prior to RAM initialization. Use Value: 20 µA max standby current extends battery runtime between charges while maintaining firmware integrity. |
| Legacy Industrial Instrumentation Upgrade | Embedded Test Equipment Calibration Data |
Use Scenario: Replacing obsolete 5 V EPROMs in aging oscilloscopes and spectrum analyzers requiring field-serviceable firmware updates. IC Role / Device Role / Timing Role: Direct pin-compatible upgrade path preserving original PCB layout and socket footprint. Use Value: JEDEC-compliant PLCC/TSOP/VSOP packages enable retrofit using existing sockets or reflow profiles. |
Use Scenario: Storing factory-calibrated ADC/DAC coefficients and sensor linearization tables in benchtop multimeters and signal generators. IC Role / Device Role / Timing Role: One-time programmable storage ensuring calibration data cannot be overwritten in-field. Use Value: Integrated product ID enables automated calibration verification during manufacturing test and service recalibration. |
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 150 ns tACC and pinout. | Requires dedicated 5 V rail; unsuitable for battery-powered or mixed-voltage systems. | Select when legacy 5 V infrastructure exists and low-voltage operation is unnecessary. |
| MX29LV200CBTI-90G | Flash-based (reprogrammable), 3.0–3.6 V only, 90 ns access, different command set and sector protection. | Enables field firmware updates but requires flash-specific driver software and wear-leveling management. | Select when reprogrammability and faster access are prioritized over OTP security and simplicity. |
Compared with AT27LV020A-15VC, AT27C020-15JC offers identical timing and footprint but lacks low-voltage flexibility, while MX29LV200CBTI-90G trades OTP immutability for reprogrammability and tighter timing-making it suitable for upgradable systems but introducing complexity in secure boot design.
Availability
AT27LV020A-15VC is available at Aetrix Electronics and suitable for industrial automation, portable medical instrumentation, and legacy test equipment requiring stable component supply, long-term lifecycle support, and JEDEC-standard OTP memory.
Supply support for AT27LV020A-15VC 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 AT27LV020A product line delivers low-voltage, high-reliability OTP EPROMs for cost-sensitive embedded systems where firmware immutability, low power, and dual-supply compatibility are critical design requirements.
FAQ
What is the maximum operating temperature range for AT27LV020A-15VC?
The AT27LV020A-15VC is rated for industrial temperature operation from –40°C to +85°C. This specification is confirmed in the Ordering Information table on page 10 of the datasheet, where the "-15VI" and "-15VC" suffixes denote industrial and commercial grades respectively, both sharing the same 150 ns access timing and voltage ranges.
Does AT27LV020A-15VC support in-system programming?
No, AT27LV020A-15VC does not support in-system programming. It requires dedicated EPROM programmers applying VPP = 13.0 V and VCC = 6.5 V externally. The device lacks serial interface, command protocols, or internal charge pumps needed for ISP - programming occurs only in socketed or ZIF socket environments.
Can AT27LV020A-15VC operate reliably at 3.0 V supply voltage?
Yes, AT27LV020A-15VC is fully specified for operation at 3.0 V minimum, delivering 150 ns read access time and TTL-compatible outputs (VOH ≥ 2.4 V). The DC Characteristics table on page 4 confirms VCC = 3.0–3.6 V operation with valid VIH/VIL thresholds and output drive strength at this voltage.
Is AT27LV020A-15VC pin-compatible with AT27C020?
Yes, AT27LV020A-15VC is JEDEC-standard pin- and function-compatible with AT27C020. Both share identical 32-pin PLCC/TSOP/VSOP footprints, address/data/control pin assignments, and two-line control architecture - enabling direct replacement in existing 5 V designs without PCB modification.
What decoupling capacitance is required for stable operation of AT27LV020A-15VC?
Per the System Considerations section (page 3), AT27LV020A-15VC requires a 0.1 µF high-frequency ceramic capacitor placed between VCC and GND as close to the device as possible. For arrays, a 4.7 µF bulk electrolytic capacitor should also be added near the power entry point to suppress ripple-induced transients.
AT27LV020A-15VC 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:
- 0°C ~ 70°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-VSOP
AT27LV020A-15VC FAQ
1.How can I place an order for AT27LV020A-15VC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT27LV020A-15VC 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-15VC reliable?
The price and inventory of AT27LV020A-15VC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT27LV020A-15VC is usually 5 days.
3.What payment methods are accepted for AT27LV020A-15VC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT27LV020A-15VC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT27LV020A-15VC?
AT27LV020A-15VC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT27LV020A-15VC 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-15VC?
For technical support, including AT27LV020A-15VC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT27LV020A-15VC requirements.
6.How does Aetrix verify that AT27LV020A-15VC is sourced from the original manufacturer or authorized distributors?
All AT27LV020A-15VC 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-15VC meets industry standards.
7.What is the process for return or replacement of AT27LV020A-15VC?
All AT27LV020A-15VC units undergo pre-shipment inspection (PSI). If there is an issue with AT27LV020A-15VC, 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-15VC part is unused and in its original packaging.
Return procedure for AT27LV020A-15VC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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