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Microchip Technology AT27LV020A-90VC
- Part No.:
- AT27LV020A-90VC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-TFSOP (0.488", 12.40mm Width)
- Datasheet:
-
AT27LV020A-90VC.pdf
- Description:
- IC EPROM 2MBIT PARALLEL 32VSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,743
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Product details
Overview
AT27LV020A-90VC from Atmel is a 2-Mbit (256K × 8) one-time programmable EPROM with 90 ns read access time, dual-voltage operation (3.0–3.6 V or 4.5–5.5 V), and JEDEC-standard 32-lead VSOP package. It delivers TTL-compatible outputs at 3.0 V and supports rapid programming at 100 µs/byte - ideal for battery-powered portable systems requiring low-power nonvolatile storage.
For engineers reviewing the AT27LV020A-90VC datasheet, AT27LV020A-90VC pinout, AT27LV020A-90VC application, or AT27LV020A-90VC equivalent, key selection criteria include its 90 ns tACC timing at 3.3 V, <1 µA typical standby current, dual-supply compatibility, and VSOP-32 mechanical footprint for space-constrained designs.
Technical Context
The AT27LV020A-90VC implements a CMOS OTP EPROM architecture with two-line control (CE/OE), enabling bus contention avoidance in shared-memory systems. Its address decoding covers A0–A17 (256K locations), and output drivers meet LVTTL voltage thresholds (VOL ≤ 0.4 V, VOH ≥ 2.4 V) across both supply ranges.
Programming uses VPP = 13.0 V with a 100 µs PGM pulse width and integrated product identification (Manufacturer ID = 0x1E, Device ID = 0x86). The device supports Rapid™ Algorithm verification loops per byte and requires simultaneous VCC/VPP sequencing during programming.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2,097,152 bits (256K × 8) - supports firmware/image storage for microcontroller boot loaders |
| Read Access Time | 90 ns max at VCC = 3.0–3.6 V - enables direct execution from memory in 8-bit embedded systems |
| Supply Voltage Range | 3.0–3.6 V or 4.5–5.5 V - allows interoperability with both 3.3 V logic and legacy 5 V host systems |
| Standby Current | 20 µA max (≤1 µA typical at 3.3 V) - extends battery life in always-on portable devices |
| Active Power Dissipation | 29 mW max at 5 MHz and VCC = 3.6 V - reduces thermal load vs. standard 5 V EPROMs |
| Package | 32-lead VSOP (8 × 14 mm) - compact surface-mount footprint for high-density PCB layouts |
| ESD Protection | 2,000 V HBM - improves handling robustness during manufacturing and field service |
Pinout & Package
AT27LV020A-90VC is housed in a 32-lead Very Small Outline Package (VSOP), JEDEC MO-142 BA compliant, measuring 8 mm × 14 mm with 0.5 mm lead pitch. Pin 1 is marked by an index notch on the top-left corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A17 | Address Inputs | 18-bit address bus supporting full 256K address space; driven by MPU/MCU address lines |
| O0–O7 | Data Outputs | 8-bit bidirectional data bus (output only); TTL-compatible drive strength (IOL = 2.1 mA) |
| CE | Chip Enable | Active-low chip select; controls device activation and power state transitions (standby when high) |
| OE | Output Enable | Active-low output gate; enables data bus drivers without affecting internal state |
| PGM | Program Strobe | Active-low programming control; initiates byte programming when VPP = 13 V and CE = low |
| VPP | Programming Voltage | 13.0 V ± 0.25 V input for programming; must be sequenced with VCC (simultaneous apply/remove) |
| VCC | Power Supply | 3.0–3.6 V or 4.5–5.5 V main supply; powers logic and I/O; decoupling requires 0.1 µF ceramic + 4.7 µF bulk cap |
| GND | Ground | Reference return path for all signals and supplies; critical for noise immunity and timing stability |
| NC | No Connect | Unbonded pin; must remain unconnected to avoid parasitic coupling or ESD paths |
Key Features
| Feature | Design Value |
|---|---|
| Rapid™ Programming Algorithm | 100 µs/byte typical programming time with built-in verify-reprogram loop - reduces production burn-in time by >5× vs. conventional EPROMs |
| Dual-Voltage Read Operation | Full functionality at 3.0–3.6 V or 4.5–5.5 V - eliminates level-shifting in mixed-supply systems like PCMCIA cards |
| Integrated Product ID Code | Manufacturer ID = 0x1E, Device ID = 0x86 - enables automatic algorithm selection in industry-standard programmers |
| Two-Line Control Architecture | Separate CE and OE pins - allows flexible bus arbitration and partial memory disable without system reset |
| LVTTL-Compatible I/O | VIL ≤ 0.8 V, VIH ≥ 2.0 V, VOL ≤ 0.4 V, VOH ≥ 2.4 V - ensures interoperability with both 3.3 V and 5 V logic families |
Applications
| Portable Medical Instrumentation | Industrial PLC Firmware Storage |
|---|---|
Use Scenario: Battery-powered handheld diagnostic devices requiring nonvolatile firmware that survives frequent power cycles. IC Role / Device Role / Timing Role: OTP EPROM storing boot code and calibration tables; accessed via 8-bit parallel bus during MCU startup. Use Value: 90 ns access time enables fast boot (<100 ms), while <1 µA standby current extends single-charge battery life to >1 year. |
Use Scenario: Programmable logic controller modules deployed in factory automation environments with wide temperature swings. IC Role / Device Role / Timing Role: Firmware storage for real-time control engine; operates across -40°C to +85°C industrial range with stable tACC. Use Value: Dual-voltage support allows reuse of same design across 3.3 V and 5 V backplane variants; 2,000 V ESD rating withstands factory ESD events. |
| Legacy System ROM Replacement | Embedded Test Equipment Boot Memory |
Use Scenario: Upgrading aging test equipment using obsolete 5 V EPROMs while retaining existing PCB layout and firmware binaries. IC Role / Device Role / Timing Role: Drop-in replacement for AT27C020; identical pinout, timing, and programming interface. Use Value: JEDEC-compatibility and Rapid™ Algorithm ensure zero firmware rework and same programming hardware - no tooling change required. |
Use Scenario: Automated test fixtures requiring secure, tamper-resistant boot code that cannot be overwritten in-field. IC Role / Device Role / Timing Role: One-time programmable storage for FPGA configuration bitstreams and safety-critical initialization routines. Use Value: OTP architecture prevents accidental corruption; latchup immunity (200 mA) protects against transient faults during automated test sequences. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar OTP EPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT27C020-90PC | 5 V only (4.5–5.5 V), PLCC-32 package, 90 ns access, no low-voltage mode | Requires dedicated 5 V rail; incompatible with 3.3 V systems | Select when legacy 5 V infrastructure prohibits voltage scaling and PLCC is preferred for socketed prototyping |
| MX29LV200CTTI-90G | 3 V flash memory (not OTP), 90 ns access, TSOP-48, supports erase/write cycles | Field-upgradable but higher cost and complexity; not one-time programmable | Select when firmware updates are required post-deployment; not suitable for true OTP security requirements |
Compared with AT27C020-90PC, the AT27LV020A-90VC adds 3.3 V operation and VSOP packaging for modern compact designs; compared with MX29LV200CTTI-90G, it offers true one-time programmability and simpler programming infrastructure, at lower cost for fixed-image applications.
Availability
AT27LV020A-90VC is available at Aetrix Electronics and suitable for portable medical instrumentation, industrial PLC firmware storage, and legacy system ROM replacement requiring stable component supply, long-term lifecycle support, and JEDEC-standard packaging.
Supply support for AT27LV020A-90VC 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-90VC belongs to Atmel's low-voltage OTP EPROM product line, designed specifically for portable, battery-operated, and mixed-voltage embedded systems where power efficiency and JEDEC compatibility are critical.
FAQ
What is the maximum operating temperature range for the AT27LV020A-90VC?
The AT27LV020A-90VC 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 datasheet, and applies to all VSOP-packaged variants including the -90VC suffix. The device maintains guaranteed 90 ns access time across this full range when powered at 3.0–3.6 V.
Does the AT27LV020A-90VC require external VPP circuitry during normal read operation?
No, the AT27LV020A-90VC does not require VPP during read operation. VPP is only active during programming (set to 13.0 V) and must be disconnected or floated during read mode. In standard read mode, VPP may be tied to VCC (as noted in DC Operating Conditions), but this is optional - the device functions correctly with VPP unconnected as long as it remains within –2.0 V to +7.0 V absolute limits.
Is the AT27LV020A-90VC pin-compatible with the AT27C020 series?
Yes, the AT27LV020A-90VC is pin-compatible with the AT27C020 in identical packages (PLCC, TSOP, VSOP). The pin functions, numbering, and electrical interface match exactly - including CE, OE, PGM, A0–A17, O0–O7, VCC, GND, and NC assignments. This compatibility is explicitly stated in the Features section and verified in the Pin Configurations diagrams for all three package types.
What decoupling capacitors are required for stable operation of the AT27LV020A-90VC?
The AT27LV020A-90VC requires two decoupling capacitors: a 0.1 µF high-frequency ceramic capacitor placed between VCC and GND as close to the VSOP pins as possible, plus a 4.7 µF bulk electrolytic capacitor near the power entry point of the board. These values are specified in the "System Considerations" section to suppress transients during CE switching and stabilize arrays of multiple EPROMs.
Can the AT27LV020A-90VC be programmed using standard AT27C020 programming equipment?
Yes, the AT27LV020A-90VC programs identically to the AT27C020 and uses the same programming equipment. It shares the same Rapid™ Algorithm, product identification code (0x1E/0x86), and programming voltage sequence. The datasheet confirms "The AT27LV020A programs exactly the same way as a standard 5V AT27C020 and uses the same programming equipment."
AT27LV020A-90VC 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:
- 90 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-90VC FAQ
1.How can I place an order for AT27LV020A-90VC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT27LV020A-90VC 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-90VC reliable?
The price and inventory of AT27LV020A-90VC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT27LV020A-90VC is usually 5 days.
3.What payment methods are accepted for AT27LV020A-90VC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT27LV020A-90VC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT27LV020A-90VC?
AT27LV020A-90VC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT27LV020A-90VC 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-90VC?
For technical support, including AT27LV020A-90VC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT27LV020A-90VC requirements.
6.How does Aetrix verify that AT27LV020A-90VC is sourced from the original manufacturer or authorized distributors?
All AT27LV020A-90VC 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-90VC meets industry standards.
7.What is the process for return or replacement of AT27LV020A-90VC?
All AT27LV020A-90VC units undergo pre-shipment inspection (PSI). If there is an issue with AT27LV020A-90VC, 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-90VC part is unused and in its original packaging.
Return procedure for AT27LV020A-90VC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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