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Microchip Technology AT27LV020A-15TI
- Part No.:
- AT27LV020A-15TI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
AT27LV020A-15TI.pdf
- Description:
- IC EPROM 2MBIT PARALLEL 32TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,152
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Product details
Overview
AT27LV020A-15TI 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, legacy BIOS modules, and industrial firmware loaders.
For engineers reviewing the AT27LV020A-15TI datasheet, AT27LV020A-15TI pinout, AT27LV020A-15TI application, or AT27LV020A-15TI equivalent, key selection criteria include its 150 ns tACC timing grade, industrial temperature range (−40°C to +85°C), 32-pin TSOP package, and compatibility with standard 5V AT27C020 programming infrastructure.
Technical Context
The AT27LV020A-15TI implements a CMOS OTP EPROM architecture with two-line control (CE/OE), supporting both 3.3 V and 5 V logic-level interfaces. Its Rapid™ Programming Algorithm enables 100 µs/byte typical programming with VPP = 13.0 V and VCC = 6.5 V, while maintaining TTL-compatible outputs at 3.0 V supply.
It features integrated product identification (Manufacturer ID = 0x1E, Device ID = 0x86), 2,000 V ESD protection, and latchup immunity of 200 mA. Standby current is specified at ≤20 µA (CMOS mode) and ≤100 µA (TTL mode) under industrial conditions, enabling ultra-low-power retention in portable systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2,097,152 bits (256K × 8) - supports full 8-bit microcontroller instruction/data storage without banking. |
| Read Access Time (tACC) | 150 ns max - meets timing requirements for 6.7 MHz bus clocking in legacy 8051/Z80-based systems. |
| Supply Voltage Range | 3.0 V to 3.6 V or 4.5 V to 5.5 V - enables direct integration into dual-supply card-edge designs without level shifters. |
| Standby Current (ISB1) | ≤20 µA at VCC = 3.6 V - extends battery life in always-on firmware storage applications beyond 10 years. |
| Programming Voltage (VPP) | 13.0 V ± 0.25 V - requires dedicated high-voltage programming circuitry compatible with industry-standard EPROM programmers. |
| Operating Temperature | −40°C to +85°C - qualified for industrial control panels, automotive body modules, and outdoor telemetry units. |
| Package Type | 32-lead TSOP (8 × 20 mm) - surface-mount compatible with automated assembly and space-constrained PCB layouts. |
Pinout & Package
AT27LV020A-15TI is supplied in a 32-lead Thin Small Outline Package (TSOP, Type 1, JEDEC MO-142 BD), measuring 8 mm × 20 mm with 0.5 mm lead pitch. Pin 1 is marked by a notch or index dot on the top surface.
| 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 in read mode; high-impedance when OE or CE inactive. |
| CE | Chip Enable | Active-low global enable; controls device activation and power state transition between active/standby modes. |
| OE | Output Enable | Active-low output gate; isolates data bus to prevent contention during shared-memory access. |
| PGM | Program Strobe | Active-low pulse input that initiates byte programming when VPP = 13.0 V and VCC = 6.5 V. |
| VPP | Programming Voltage | High-voltage supply input (13.0 V); must be applied simultaneously with or after VCC and removed simultaneously or before VCC. |
| VCC | Power Supply | Core logic supply (3.0–3.6 V or 4.5–5.5 V); powers internal decode, sense amplifiers, and I/O buffers. |
| GND | Ground Reference | Signal and power return; requires local 0.1 µF ceramic decoupling per device per datasheet system guidelines. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-Voltage Read Operation | Operates natively at 3.3 V or 5 V without external regulators-enables plug-and-play compatibility across 3V/5V host systems. |
| Rapid™ Programming Algorithm | 100 µs/byte typical programming time with automatic verify-reprogram loop-reduces production firmware burn time by >4× vs. legacy EPROMs. |
| Integrated Product ID Code | Manufacturer ID (0x1E) and Device ID (0x86) readable via A9/VH and A0 toggle-ensures correct algorithm selection in automated programming stations. |
| JEDEC-Standard Pinout | Pin-compatible with AT27C020 and other 32-pin EPROM families-allows drop-in replacement in existing PLCC/TSOP footprints. |
| Low-Power Standby Mode | 20 µA max ICC standby at 3.6 V-supports multi-year battery-backed firmware retention in remote sensors and metering devices. |
Applications
| Industrial PLC Firmware Storage | Legacy PC BIOS Modules |
|---|---|
Use Scenario: Nonvolatile storage of ladder logic firmware in DIN-rail mounted programmable logic controllers operating in factory environments with wide temperature swings. IC Role / Device Role / Timing Role: Primary boot code ROM providing deterministic 150 ns read access to initialization routines during cold start. Use Value: Industrial temperature rating and 20 µA standby current ensure reliable firmware retention over 15+ years without refresh or backup power. |
Use Scenario: Storing POST routines and hardware initialization code in early-generation desktop motherboards using ISA/PCI buses. IC Role / Device Role / Timing Role: Static memory mapped at 0xE0000–0xFFFFF; accessed via 8-bit data bus with CE/OE-controlled gating. Use Value: JEDEC-compatibility with AT27C020 allows reuse of existing socketed PLCC layouts and programming fixtures during BIOS revision cycles. |
| Embedded Controller Boot ROM | Telecom Line Card Configuration |
Use Scenario: Fixed-function microcontroller boot loader storage in HVAC controllers where firmware updates are infrequent but long-term reliability is critical. IC Role / Device Role / Timing Role: OTP EPROM holding reset vector and minimal startup code; no runtime writes required after initial programming. Use Value: One-time programmability eliminates accidental overwrite risk; 2,000 V ESD rating withstands handling in uncontrolled manufacturing environments. |
Use Scenario: Storing line interface parameters, calibration coefficients, and protocol stacks in modular telecom carrier-grade line cards. IC Role / Device Role / Timing Role: Configuration ROM mapped into DSP or ARM subsystem address space; read-only during normal operation. Use Value: Dual-voltage support allows same part to serve in both 3.3 V DSP subsystems and 5 V analog front-end sections without redesign. |
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 3.3 V support; identical 150 ns speed and 32-pin PLCC package. | Requires separate 5 V rail; unsuitable for battery-powered or mixed-voltage systems. | Select when legacy 5 V infrastructure is fixed and low-voltage operation is unnecessary. |
| MX29LV020TC-15 | 3 V-only flash memory (not OTP); supports erase/rewrite; 150 ns access; 32-pin TSOP package. | Enables field firmware updates; higher endurance but greater complexity in programming and wear management. | Select when reprogrammability is required and flash write-cycle overhead is acceptable. |
Compared with AT27C020-15JC, the AT27LV020A-15TI adds 3.3 V operation and lower standby power but retains identical timing and pinout; versus MX29LV020TC-15, it trades reprogrammability for simpler programming infrastructure and guaranteed data retention without wear leveling.
Availability
AT27LV020A-15TI is available at Aetrix Electronics and suitable for industrial control systems, legacy computing platforms, and embedded boot ROM applications requiring stable component supply, long-lifecycle support, and JEDEC-standard OTP EPROM compatibility.
Supply support for AT27LV020A-15TI 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-15TI belongs to Atmel's low-voltage OTP EPROM product line, designed specifically for portable, battery-operated, and dual-supply embedded systems needing reliable, low-power, pin-compatible firmware storage.
FAQ
What is the maximum read access time specified for AT27LV020A-15TI?
The AT27LV020A-15TI has a maximum address-to-output delay (tACC) of 150 ns under both 3.0–3.6 V and 4.5–5.5 V supply conditions, as confirmed in the AC Characteristics table for the -15 speed grade. This value applies across the full industrial temperature range (−40°C to +85°C) and defines the worst-case timing margin for synchronous bus interfacing.
Does AT27LV020A-15TI support true 3.3 V operation with TTL-compatible outputs?
Yes, the AT27LV020A-15TI produces TTL-level outputs (VOH ≥ 2.4 V, VOL ≤ 0.4 V) when powered at VCC = 3.0 V, meeting LVTTL voltage thresholds and ensuring interoperability with standard 5 V TTL logic without level translation. This behavior is explicitly verified in the DC Operating Characteristics section.
What programming voltage and sequence are required for AT27LV020A-15TI?
The AT27LV020A-15TI requires VPP = 13.0 V ± 0.25 V and VCC = 6.5 V ± 0.25 V during programming, with VCC applied simultaneously with or before VPP and removed simultaneously with or after VPP. A 0.1 µF capacitor must be placed between VPP and GND to suppress transients, per the Programming Waveforms section.
Is AT27LV020A-15TI pin-compatible with AT27C020?
Yes, the AT27LV020A-15TI shares identical pin functions, pin count (32), and JEDEC-standard pinout with AT27C020, including A0–A17, O0–O7, CE, OE, PGM, VPP, VCC, and GND assignments. The datasheet confirms compatibility with AT27C020 programming equipment and socket footprints.
What is the standby current specification for AT27LV020A-15TI at 3.6 V?
The AT27LV020A-15TI specifies a maximum VCC standby current (ISB1) of 20 µA at VCC = 3.6 V and industrial temperature (−40°C to +85°C), with typical consumption below 1 µA. This value is measured with CE = VCC ± 0.3 V and reflects CMOS-mode quiescent draw during firmware retention.
AT27LV020A-15TI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 32-TFSOP (0.724", 18.40mm 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-TSOP
AT27LV020A-15TI FAQ
1.How can I place an order for AT27LV020A-15TI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT27LV020A-15TI 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-15TI reliable?
The price and inventory of AT27LV020A-15TI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT27LV020A-15TI is usually 5 days.
3.What payment methods are accepted for AT27LV020A-15TI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT27LV020A-15TI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT27LV020A-15TI?
AT27LV020A-15TI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT27LV020A-15TI 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-15TI?
For technical support, including AT27LV020A-15TI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT27LV020A-15TI requirements.
6.How does Aetrix verify that AT27LV020A-15TI is sourced from the original manufacturer or authorized distributors?
All AT27LV020A-15TI 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-15TI meets industry standards.
7.What is the process for return or replacement of AT27LV020A-15TI?
All AT27LV020A-15TI units undergo pre-shipment inspection (PSI). If there is an issue with AT27LV020A-15TI, 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-15TI part is unused and in its original packaging.
Return procedure for AT27LV020A-15TI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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