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Microchip Technology AT27LV020A-15JI
- Part No.:
- AT27LV020A-15JI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-LCC (J-Lead)
- Datasheet:
-
AT27LV020A-15JI.pdf
- Description:
- IC EPROM 2MBIT PARALLEL 32PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:4,134
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Product details
Overview
AT27LV020A-15JI from Atmel is a 2-Mbit (256K × 8) one-time programmable EPROM with dual-voltage operation (3.0–3.6V or 4.5–5.5V), 150 ns read access time, and industrial temperature range (−40°C to +85°C). It features two-line control (CE/OE), CMOS/TTL-compatible I/O, and JEDEC-standard PLCC-32 packaging - used in legacy embedded boot memory and FPGA configuration storage where low-power 3V operation and 5V system compatibility are required.
For engineers reviewing the AT27LV020A-15JI datasheet, AT27LV020A-15JI pinout, AT27LV020A-15JI application, or AT27LV020A-15JI equivalent, this page delivers verified electrical specs, package mapping, real-world use cases, and validated alternative parts - all confirmed against Atmel's official documentation and JEDEC-compliant timing behavior.
Technical Context
The AT27LV020A-15JI implements a standard OTP EPROM architecture with address decoding for A0–A17 (256K locations), 8-bit parallel data outputs (O0–O7), and dedicated PGM/VPP pins for high-voltage programming. Its two-line control logic (CE active-low, OE active-low) enables bus contention avoidance in shared-memory systems.
It supports rapid programming at 100 µs/byte using VPP = 13.0 V and VCC = 6.5 V, while maintaining TTL-level output compatibility at 3.0 V supply - enabling direct interfacing with 5V logic without level shifters. Standby current is ≤20 µA at VCC = 3.6 V, and it includes integrated product identification code (0x1E/0x86) for automated programmer recognition.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2,097,152 bits (256K × 8) - provides full boot code or FPGA configuration image storage in space-constrained industrial controllers. |
| Read Access Time | 150 ns max at VCC = 3.0–3.6V or 4.5–5.5V - meets timing budgets for 6.67 MHz bus clocks in legacy microcontroller systems. |
| Supply Voltage Range | 3.0–3.6V or 4.5–5.5V - enables dual-supply interoperability in mixed-voltage backplanes or hot-pluggable cards. |
| Standby Current | ≤20 µA at VCC = 3.6V - reduces quiescent power in battery-backed systems during sleep mode. |
| Programming Voltage | VPP = 13.0 ± 0.25 V - requires external high-voltage supply during factory programming; not used in normal operation. |
| Operating Temperature | −40°C to +85°C - qualified for industrial automation, motor drives, and outdoor telecom equipment. |
| Package Type | 32-lead PLCC (JEDEC MS-016 AE) - surface-mount compatible with reflow profiles; pin 1 index marked on top surface. |
Pinout & Package
AT27LV020A-15JI uses a 32-lead Plastic Leaded Chip Carrier (PLCC) package per JEDEC MS-016 AE, with pin 1 identified by an index notch and corner marking. The package is lead-free and RoHS-compliant per Atmel's 2001 specification.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A17 | Address Inputs | 18-bit address bus for selecting one of 256K bytes; internally decoded with no external latch required. |
| O0–O7 | Data Outputs | True TTL/CMOS-compatible 8-bit bidirectional data bus; high-impedance when CE or OE is inactive. |
| CE | Chip Enable | Active-low global enable; places device in standby (≤20 µA) when high, enabling multi-chip memory decoding. |
| OE | Output Enable | Active-low output gate; controls data bus drive without affecting internal state or power consumption. |
| PGM | Program Strobe | Active-low pulse input (100 µs width) that initiates byte programming when VPP = 13.0 V is applied. |
| VPP | Programming Supply | High-voltage input (13.0 V) required only during programming; must be applied simultaneously with or after VCC. |
| VCC | Power Supply | Primary supply (3.0–3.6V or 4.5–5.5V); powers logic and outputs; also supplies internal charge pumps during programming. |
| GND | Ground Reference | Common return path for VCC, VPP, and signal currents; requires local 0.1 µF ceramic decoupling per device. |
| NC | No Connect | Unbonded pin (pin 31 in PLCC); must remain unconnected and floating - no pull-up/down or routing allowed. |
Key Features
| Feature | Design Value |
|---|---|
| Rapid™ Programming Algorithm | 100 µs/byte typical programming time - reduces production burn-in cycle time versus standard EPROMs. |
| Two-Line Control Logic | Independent CE and OE inputs - allows flexible memory arbitration in multi-master systems without additional glue logic. |
| Integrated Product ID Code | Manufacturer ID = 0x1E, Device ID = 0x86 - enables automatic algorithm selection in industry-standard programmers (e.g., BP Microsystems). |
| JEDEC-Compatible I/O Levels | TTL-compatible outputs at 3.0 V VCC - eliminates need for level translators when interfacing with 5V microcontrollers or FPGAs. |
| ESD & Latchup Robustness | 2,000 V HBM ESD rating and 200 mA latchup immunity - improves field reliability in handling-sensitive industrial environments. |
Applications
| Industrial PLC Firmware Storage | FPGA Configuration Memory |
|---|---|
|
Use Scenario: Storing fixed startup configuration bitstreams for Xilinx Spartan or Altera MAX II FPGAs in factory automation controllers. IC Role / Device Role / Timing Role: Nonvolatile parallel boot memory mapped to FPGA's INIT pin sequence; accessed via synchronous 8-bit bus during power-on reset. Use Value: Eliminates external configuration PROMs requiring serial-to-parallel conversion; 150 ns tACC ensures FPGA initialization completes within 10 ms. |
Use Scenario: Holding immutable firmware images for ARM7-based motion controllers deployed in harsh factory environments. IC Role / Device Role / Timing Role: Read-only instruction memory for microcontroller boot ROM; directly addressed via ALE-latched address bus. Use Value: −40°C to +85°C rating and 20 µA standby current support extended uptime in unheated enclosures with intermittent power. |
| Legacy Telecom Card BIOS | Medical Device Bootloader |
|
Use Scenario: Providing boot code for TDM switch interface cards operating in both 3.3V and 5V host chassis slots. IC Role / Device Role / Timing Role: Dual-voltage OTP memory enabling plug-and-play compatibility across mixed-voltage backplane generations. Use Value: Single BOM part replaces separate 3V/5V EPROM variants; JEDEC PLCC-32 footprint ensures mechanical interchangeability. |
Use Scenario: Securing certified bootloader code in Class II medical infusion pumps requiring long-term data retention and tamper resistance. IC Role / Device Role / Timing Role: One-time programmable, non-rewritable storage for FDA-cleared firmware; prevents unauthorized runtime modification. Use Value: Rapid programming and integrated ID code simplify traceability and audit compliance; 2,000 V ESD protects against ESD events during clinical servicing. |
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 | 5V-only operation (4.5–5.5V); no 3V support; identical pinout and timing (150 ns). | Requires dedicated 5V rail; unsuitable for battery-powered or dual-supply systems. | Select when system operates exclusively at 5V and legacy 5V EPROM infrastructure is already in place. |
| MX29LV160CBTI-90G | 16-Mbit Flash (2M × 8), 90 ns access, 3.0–3.6V only, single-power programming, no VPP pin. | Reprogrammable; supports in-system updates; lacks OTP security guarantee. | Choose for field-upgradable firmware where rewrite capability outweighs permanent write-protection requirements. |
Compared with AT27C020-15JC, the AT27LV020A-15JI adds 3V operation and lower standby current but retains identical programming flow and JEDEC compatibility; versus MX29LV160CBTI-90G, it trades reprogrammability for guaranteed immutability and simpler voltage management.
Availability
AT27LV020A-15JI is available at Aetrix Electronics and suitable for industrial PLC firmware storage, FPGA configuration memory, legacy telecom card BIOS, and medical device bootloader applications requiring stable component supply across extended product lifecycles.
Supply support for AT27LV020A-15JI 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 markets.
The AT27LV020A-15JI belongs to Atmel's low-voltage OTP EPROM product line, designed specifically for legacy system upgrades needing 3V/5V interoperability, low-power standby, and JEDEC-standard packaging without redesigning PCB layouts.
FAQ
What is the maximum operating temperature range for the AT27LV020A-15JI?
The AT27LV020A-15JI 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 official datasheet, where the "I" suffix denotes industrial grade. The device maintains full read timing (150 ns tACC) and electrical compliance across this full range when powered within its specified VCC windows (3.0–3.6V or 4.5–5.5V).
Does the AT27LV020A-15JI require a high-voltage supply during normal read operation?
No, the AT27LV020A-15JI does not require VPP during read operation. VPP = 13.0 V is needed only during programming, as stated in the "DC Programming Characteristics" table (page 7). In read mode, the device operates solely from VCC (3.0–3.6V or 4.5–5.5V), and VPP may be tied to VCC or left unconnected - though Atmel recommends connecting VPP to VCC except during programming to avoid floating node issues.
Is the AT27LV020A-15JI pin-compatible with the AT27C020 series?
Yes, the AT27LV020A-15JI is JEDEC-pin-compatible with the AT27C020 family, including identical PLCC-32 pinout, address/data mapping, and CE/OE control logic. The "Compatible with JEDEC Standard AT27C020" feature is explicitly listed on page 1, and the pin configurations on pages 2–3 confirm identical A0–A17, O0–O7, CE, OE, and PGM placements - enabling drop-in replacement in existing 5V designs when 3V operation is added.
What decoupling capacitance is required for stable operation of the AT27LV020A-15JI?
At minimum, a 0.1 µF high-frequency ceramic capacitor must be placed between VCC and GND, mounted as close as possible to the AT27LV020A-15JI's pins. For systems with multiple EPROMs, a 4.7 µF bulk electrolytic capacitor should also be added near the power entry point. These values are mandated in the "System Considerations" section (page 2) to suppress transient excursions caused by CE switching and ensure reliable read timing.
How is the product identification code accessed on the AT27LV020A-15JI?
The AT27LV020A-15JI's integrated product ID code (Manufacturer ID = 0x1E, Device ID = 0x86) is read by holding all address lines A1–A17 low, setting A9 to VH = 12.0 V, and toggling A0 between low and high. This sequence is defined in the "Product Identification" timing diagram (page 9) and enables automatic detection by industry-standard programmers - ensuring correct algorithm selection without manual configuration.
AT27LV020A-15JI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 32-LCC (J-Lead)
- Packaging:
- Tube
- 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-PLCC (13.97x11.43)
AT27LV020A-15JI FAQ
1.How can I place an order for AT27LV020A-15JI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT27LV020A-15JI 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-15JI reliable?
The price and inventory of AT27LV020A-15JI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT27LV020A-15JI is usually 5 days.
3.What payment methods are accepted for AT27LV020A-15JI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT27LV020A-15JI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT27LV020A-15JI?
AT27LV020A-15JI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT27LV020A-15JI 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-15JI?
For technical support, including AT27LV020A-15JI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT27LV020A-15JI requirements.
6.How does Aetrix verify that AT27LV020A-15JI is sourced from the original manufacturer or authorized distributors?
All AT27LV020A-15JI 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-15JI meets industry standards.
7.What is the process for return or replacement of AT27LV020A-15JI?
All AT27LV020A-15JI units undergo pre-shipment inspection (PSI). If there is an issue with AT27LV020A-15JI, 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-15JI part is unused and in its original packaging.
Return procedure for AT27LV020A-15JI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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