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Microchip Technology AT27LV020A-12VC
- Part No.:
- AT27LV020A-12VC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-TFSOP (0.488", 12.40mm Width)
- Datasheet:
-
AT27LV020A-12VC.pdf
- Description:
- IC EPROM 2MBIT PARALLEL 32VSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,167
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Product details
Overview
AT27LV020A-12VC 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 3.0–3.6 V or 4.5–5.5 V supply operation, and JEDEC-standard 32-lead VSOP packaging. It delivers TTL-compatible outputs at 3.0 V and supports rapid programming at 100 µs/byte.
For engineers reviewing the AT27LV020A-12VC datasheet, AT27LV020A-12VC pinout, AT27LV020A-12VC application, or AT27LV020A-12VC equivalent, key selection criteria include its 120 ns access timing under both 3.3 V and 5 V operation, <20 µA standby current at 3.6 V, two-line control (CE/OE), OTP reliability for firmware storage, and compatibility with standard AT27C020 programming infrastructure.
Technical Context
The AT27LV020A-12VC implements a CMOS-based OTP EPROM architecture with integrated product identification code (0x1E86), enabling automatic algorithm selection in industry-standard programmers. Its two-line control interface (CE and OE) decouples chip enable from output gating to prevent bus contention during partial memory access.
It operates across two distinct voltage domains: low-voltage mode (3.0–3.6 V) for portable applications with sub-1 µA typical standby current, and standard 5 V ±10% mode for legacy system compatibility. Programming requires VCC = 6.5 V and VPP = 13.0 V, with a verified 100 µs pulse width per byte using the Rapid™ algorithm.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2,097,152 bits (256K × 8) - supports full 8-bit microcontroller boot code or firmware image storage without bank switching. |
| Read Access Time | 120 ns max at VCC = 3.0–3.6 V or 4.5–5.5 V - meets timing requirements for 8 MHz Z80, 68K, or early ARM7 bus cycles. |
| Supply Voltage Range | 3.0–3.6 V or 4.5–5.5 V - enables single-part deployment in mixed-voltage systems (e.g., 3.3 V logic + 5 V peripherals). |
| Standby Current | 20 µA max at VCC = 3.6 V - extends battery life in handheld instruments and remote sensors between wake cycles. |
| Programming Speed | 100 µs/byte typical - reduces production programming time by >5× versus legacy 5 V EPROMs. |
| Output Compatibility | TTL- and LVTTL-compatible I/O - interfaces directly with 5 V microcontrollers and 3.3 V FPGAs without level-shifting. |
| Package | 32-lead VSOP (8 × 14 mm) - compact footprint ideal for space-constrained industrial control modules and telecom line cards. |
Pinout & Package
AT27LV020A-12VC is supplied 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. The package supports reflow soldering and offers improved thermal dissipation over PLCC for high-density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A17 | Address Inputs | 256K address space (18-bit addressing); A0–A17 fully decoded for direct linear memory mapping. |
| O0–O7 | Data Outputs | True TTL-level outputs at 3.0 V; drive 2.1 mA low / –400 µA high - compatible with 74LS and 74HC loads. |
| CE | Chip Enable | Active-low global enable; controls power state transition between active (ICC = 8 mA) and standby (ISB ≤ 20 µA). |
| OE | Output Enable | Active-low output gate; allows shared data bus operation with other peripherals without requiring tristate logic. |
| PGM | Program Strobe | Active-low programming trigger; initiates 100 µs pulse write cycle when VPP = 13.0 V and VCC = 6.5 V. |
| VPP | Programming Voltage | 13.0 V ±0.25 V input for OTP cell injection; requires external 0.1 µF ceramic bypass capacitor to ground. |
| VCC | Power Supply | Primary supply for read/standby (3.0–3.6 V or 4.5–5.5 V); must be applied before/with VPP during programming. |
| GND | Ground Reference | Common return path for VCC, VPP, and I/O; requires local 0.1 µF ceramic + 4.7 µF bulk decoupling per device. |
| NC | No Connect | Unbonded pin; must remain unconnected to avoid parasitic coupling or ESD path disruption. |
Key Features
| Feature | Design Value |
|---|---|
| Rapid™ Programming Algorithm | 100 µs/byte typical programming time with auto-verify loop - cuts firmware burn time in manufacturing test by >80% vs. legacy EPROMs. |
| Integrated Product ID Code | Manufacturer ID 0x1E and Device ID 0x86 - enables plug-and-play recognition in universal programmers without manual part selection. |
| Dual-Voltage Read Operation | Valid function at 3.0–3.6 V or 4.5–5.5 V - eliminates need for separate 3.3 V and 5 V memory parts in field-upgradable embedded systems. |
| Two-Line Control Interface | Independent CE and OE pins - permits partial memory disable while maintaining bus integrity during DMA transfers or interrupt servicing. |
| High-Reliability OTP Cell | 2,000 V HBM ESD rating and 200 mA latchup immunity - ensures robustness in industrial environments with frequent hot-plug events. |
Applications
| Industrial PLC Firmware Storage | Medical Diagnostic Device Boot ROM |
|---|---|
Use Scenario: Fixed-function programmable logic controller storing ladder logic and I/O configuration tables in nonvolatile memory. IC Role / Device Role / Timing Role: OTP EPROM providing boot-time instruction fetch and static configuration data lookup with deterministic 120 ns latency. Use Value: Eliminates need for external EEPROM or Flash wear-leveling logic; retains data for >20 years without refresh in temperature-cycled factory environments. |
Use Scenario: Portable ultrasound or ECG unit requiring certified, unalterable boot firmware and calibration constants. IC Role / Device Role / Timing Role: Secure, tamper-proof firmware repository with guaranteed read consistency across 0°C to 85°C operating range. Use Value: Meets IEC 62304 Class B software safety requirements via immutable storage; no risk of bit corruption during power brownouts. |
| Telecom Line Card Configuration | Legacy Computer System BIOS Replacement |
Use Scenario: DSLAM or optical line terminal storing hardware-specific initialization sequences and vendor-specific feature keys. IC Role / Device Role / Timing Role: Configuration memory accessed during power-on reset with strict tACC ≤ 120 ns timing compliance. Use Value: Enables single-board design across multiple carrier SKUs via field-programmable OTP content; avoids costly mask ROM NRE charges. |
Use Scenario: Retrofit upgrade of vintage PC/AT or industrial PC BIOS where original 27C2000 EPROM sockets remain populated. IC Role / Device Role / Timing Role: Pin-compatible drop-in replacement for AT27C020 with identical 32-pin VSOP footprint and JEDEC timing. Use Value: Supports 3.3 V motherboard designs without redesign; maintains full 5 V backward compatibility for mixed-voltage backplanes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar OTP EPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT27C020-12VC | Requires 5 V ±10% only; no 3.3 V operation; identical 120 ns speed and VSOP package. | Limited to fixed 5 V systems; cannot support battery-powered or mixed-voltage designs. | Select when legacy 5 V infrastructure prohibits voltage scaling and lower standby current is not required. |
| MX29LV200CBTI-12G | Flash-based (not OTP); supports erase/write cycles; 3.0–3.6 V only; 32-pin TSOP package. | Enables field firmware updates but introduces complexity in write-protection and endurance management. | Select only if reprogrammability is mandatory; not suitable for safety-critical immutable storage. |
Compared with AT27C020-12VC, the AT27LV020A-12VC adds 3.3 V operation and 5× lower standby current but retains identical pinout and programming flow; versus MX29LV200CBTI-12G, it trades reprogrammability for guaranteed data retention, simpler interface, and zero erase-cycle overhead in boot-critical roles.
Availability
AT27LV020A-12VC is available at Aetrix Electronics and suitable for industrial PLCs, medical diagnostic devices, telecom line cards, legacy computer BIOS upgrades, and portable instrumentation requiring stable component supply with long-term lifecycle assurance.
Supply support for AT27LV020A-12VC 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 for industrial, automotive, and consumer applications.
The AT27LV020A-12VC belongs to Atmel's low-voltage OTP EPROM product line, engineered for battery-operated and mixed-voltage embedded systems where firmware immutability, low-power standby, and JEDEC compatibility are critical.
FAQ
What is the maximum read access time specification for AT27LV020A-12VC?
The AT27LV020A-12VC has a guaranteed maximum read access time of 120 ns under both 3.0–3.6 V and 4.5–5.5 V supply conditions, measured from address valid or CE/OE assertion to valid data on O0–O7. This timing is fully characterized across commercial (0°C to 70°C) and industrial (–40°C to 85°C) temperature ranges, ensuring reliable operation in demanding environments without derating.
Can AT27LV020A-12VC operate with a 3.3 V supply and interface directly with 5 V TTL logic?
Yes, AT27LV020A-12VC operates within 3.0–3.6 V and produces true TTL-compatible outputs (VOH ≥ 2.4 V, VOL ≤ 0.4 V) that meet 5 V TTL input thresholds. Its outputs drive 2.1 mA low and –400 µA high, allowing direct connection to 74LS, 74ALS, and most 5 V microcontrollers without level shifters - a key advantage over standard 3.3 V-only memories.
Is AT27LV020A-12VC pin-compatible with AT27C020-12VC?
Yes, AT27LV020A-12VC shares identical pinout, package dimensions (32-lead VSOP), and JEDEC MO-142 BA outline with AT27C020-12VC. Both support the same two-line control (CE/OE), address/data bus structure, and programming protocol - enabling drop-in replacement in existing 5 V designs while adding 3.3 V capability and lower power consumption.
What programming voltage and equipment are required for AT27LV020A-12VC?
AT27LV020A-12VC requires VCC = 6.5 V ±0.25 V and VPP = 13.0 V ±0.25 V during programming, with a 100 µs PGM pulse width. It uses the same programming algorithms and hardware as AT27C020, including industry-standard EPROM programmers with VPP switching capability and integrated product ID (0x1E86) auto-detection - no special tooling is needed.
Does AT27LV020A-12VC support industrial temperature range operation?
Yes, AT27LV020A-12VC is qualified for industrial temperature operation from –40°C to +85°C, with full DC and AC specifications guaranteed across this range. Its standby current remains ≤20 µA at 3.6 V and 85°C, and read access time stays within 120 ns - making it suitable for deployment in motor drives, outdoor telecom gear, and factory automation controllers.
AT27LV020A-12VC 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:
- 0°C ~ 70°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-VSOP
AT27LV020A-12VC FAQ
1.How can I place an order for AT27LV020A-12VC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT27LV020A-12VC 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-12VC reliable?
The price and inventory of AT27LV020A-12VC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT27LV020A-12VC is usually 5 days.
3.What payment methods are accepted for AT27LV020A-12VC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT27LV020A-12VC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT27LV020A-12VC?
AT27LV020A-12VC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT27LV020A-12VC 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-12VC?
For technical support, including AT27LV020A-12VC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT27LV020A-12VC requirements.
6.How does Aetrix verify that AT27LV020A-12VC is sourced from the original manufacturer or authorized distributors?
All AT27LV020A-12VC 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-12VC meets industry standards.
7.What is the process for return or replacement of AT27LV020A-12VC?
All AT27LV020A-12VC units undergo pre-shipment inspection (PSI). If there is an issue with AT27LV020A-12VC, 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-12VC part is unused and in its original packaging.
Return procedure for AT27LV020A-12VC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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