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Microchip Technology AT27LV020A-15JC
- Part No.:
- AT27LV020A-15JC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-LCC (J-Lead)
- Datasheet:
-
AT27LV020A-15JC.pdf
- Description:
- IC EPROM 2MBIT PARALLEL 32PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:1,659
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Product details
Overview
AT27LV020A-15JC 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-supply compatibility, and JEDEC-standard PLCC-32 packaging. It delivers <1 µA typical standby current and supports rapid programming at 100 µs/byte.
For engineers reviewing the AT27LV020A-15JC datasheet, AT27LV020A-15JC pinout, AT27LV020A-15JC application, or AT27LV020A-15JC equivalent, key selection criteria include its 3.0–3.6 V / 5 V dual-range operation, 150 ns tACC timing grade, PLCC-32 mechanical footprint, OTP reliability for firmware storage, and compatibility with legacy AT27C020 programming infrastructure.
Technical Context
The AT27LV020A-15JC implements a CMOS-based OTP memory array with two-line control (CE/OE), enabling bus contention avoidance in shared-data-bus architectures. Its address decoding covers A0–A17 (18-bit), supporting full 256K-byte addressing without external latching.
It operates in five distinct modes-Read, Output Disable, Standby, Rapid Program, and Product Identification-each defined by specific CE/OE/PGM logic states and VPP voltage conditions (VPP = 13.0 V during programming, VPP = VCC otherwise). The integrated product ID code (0x1E86) is accessed via A9 high-voltage enable and A0 toggling, ensuring automated programmer recognition.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2,097,152 bits (256K × 8); sufficient for boot code, firmware images, or configuration tables in embedded controllers. |
| Read Access Time (tACC) | 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 direct integration into mixed-voltage systems without level shifters. |
| Standby Current (ISB1) | 20 µA max at VCC = 3.6 V, CE = VCC ± 0.3 V; supports ultra-low-power sleep modes in portable devices. |
| Programming Speed | 100 µs/byte typical using Rapid™ algorithm; reduces production programming cycle time versus standard EPROMs. |
| Input/Output Compatibility | CMOS and TTL compatible I/O; outputs meet LVTTL VOH/VOL specs at 3.3 V, interoperable with 5 V logic when VCC = 3.0 V. |
| ESD/Latchup Rating | 2,000 V HBM ESD protection and 200 mA latchup immunity; suitable for industrial environments with moderate noise exposure. |
Pinout & Package
AT27LV020A-15JC is housed in a 32-lead Plastic Leaded Chip Carrier (PLCC-32) per JEDEC MS-016 AE, with 0.050" pitch and J-lead geometry. Pin 1 is marked by an index notch on the top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A17 | Address Inputs | 18-bit address bus interface; fully decodes 256K-byte memory space without external address latches. |
| O0–O7 | Data Outputs | 8-bit bidirectional data bus outputs; TTL-compatible VOH ≥ 2.4 V at IOH = –2.0 mA ensures reliable logic-high drive into 5 V systems. |
| CE | Chip Enable | Active-low chip select; controls device activation and entry to Standby mode (ISB ≤ 20 µA) when high. |
| OE | Output Enable | Active-low output gate; enables data output only when CE is also active, preventing bus contention. |
| PGM | Program Strobe | Active-low programming control; initiates byte programming when VPP = 13.0 V and CE = VIL. |
| VPP | Programming Voltage | 13.0 V ± 0.25 V input during programming; must be applied simultaneously with or after VCC and removed simultaneously or before VCC. |
| VCC | Power Supply | 3.0–3.6 V or 4.5–5.5 V main supply; powers core logic and I/O buffers; requires local 0.1 µF ceramic decoupling. |
| GND | Ground Reference | Signal and power ground reference; must be connected to system ground plane with minimal impedance. |
| NC | No Connect | Unbonded pin; left floating per design; no electrical or mechanical connection internally. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-Voltage Read Operation | Operates natively at 3.0–3.6 V or 4.5–5.5 V without external regulators-reduces BOM count in multi-supply systems. |
| Rapid™ Programming Algorithm | 100 µs/byte typical programming time with auto-verify loop; cuts production programming duration by >5× vs conventional EPROMs. |
| Integrated Product ID Code | Manufacturer ID (0x1E) and Device Code (0x86) accessible via A9/A0 control; enables automatic algorithm selection in universal programmers. |
| Two-Line Control Architecture | CE and OE pins provide independent control of chip activation and output gating-eliminates need for bus transceivers in shared-bus designs. |
| JEDEC-Standard Packaging | PLCC-32 footprint matches AT27C020; allows drop-in replacement in existing 5 V designs while enabling 3 V operation. |
Applications
| Industrial PLC Firmware Storage | Medical Device Boot ROM |
|---|---|
Use Scenario: Storing immutable boot firmware and safety-critical calibration data in programmable logic controllers deployed in factory automation environments. IC Role / Device Role / Timing Role: Nonvolatile boot ROM providing deterministic startup sequence execution upon power-up or reset. Use Value: 20 µA max standby current extends uptime during brownout conditions; 150 ns tACC ensures fast initialization within tight PLC scan-cycle deadlines. |
Use Scenario: Holding certified bootloader and regulatory-compliant diagnostic routines in portable ultrasound or infusion pump controllers. IC Role / Device Role / Timing Role: One-time programmable firmware repository with tamper-resistant integrity for FDA 510(k)-cleared devices. Use Value: OTP architecture prevents field reprogramming of safety logic; 2,000 V ESD rating withstands clinical handling; PLCC-32 supports manual rework if required. |
| Legacy Embedded System Upgrade | Low-Power Data Logger Memory |
Use Scenario: Replacing obsolete 5 V AT27C020 EPROMs in installed base equipment while retaining PCB layout and programming infrastructure. IC Role / Device Role / Timing Role: Pin- and function-compatible upgrade path delivering identical timing and programming behavior at lower voltage. Use Value: JEDEC PLCC-32 package and AT27C020-equivalent programming algorithm allow reuse of existing sockets and programmers-zero hardware redesign. |
Use Scenario: Storing firmware and fixed lookup tables in solar-powered environmental sensors operating for years on primary lithium batteries. IC Role / Device Role / Timing Role: Low-quiescent-power nonvolatile memory enabling extended sleep intervals between wake-up events. Use Value: <1 µA typical ISB at 3.3 V minimizes battery drain during 99.9% sleep duty cycle; 3.0 V minimum VCC supports operation down to end-of-life cell voltage. |
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 (4.5–5.5 V), no 3 V operation; identical PLCC-32 pinout and 150 ns tACC. | Requires dedicated 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 flash memory (not OTP), 150 ns tACC, TSOP-32 package; supports in-system reprogramming. | Reprogrammable but higher standby current (~10 µA typical); lacks OTP security guarantee. | Select when firmware updates in the field are required and PLCC-to-TSOP board revision is acceptable. |
Compared with AT27C020-15JC, the AT27LV020A-15JC adds 3 V operation and lower power, while MX29LV020TC-15 offers reprogrammability at the cost of OTP assurance and different packaging-making AT27LV020A-15JC optimal for secure, low-power, dual-voltage firmware storage where write-once integrity is mandatory.
Availability
AT27LV020A-15JC is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device boot ROM, and legacy embedded system upgrades requiring stable component supply across long-lifecycle programs.
Supply support for AT27LV020A-15JC 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 belongs to Atmel's low-voltage OTP EPROM product line, designed specifically to replace 5 V EPROMs in portable, battery-operated, and mixed-voltage embedded systems without sacrificing speed or programming compatibility.
FAQ
What is the maximum read access time specified for AT27LV020A-15JC?
The AT27LV020A-15JC is rated for 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. This timing grade is confirmed in the Ordering Information table and applies across commercial (0°C to 70°C) and industrial (–40°C to 85°C) temperature ranges. The "15" in the part number explicitly denotes this 150 ns specification.
Does AT27LV020A-15JC support true 3 V operation, or does it require 5 V for full functionality?
The AT27LV020A-15JC supports full read functionality at 3.0–3.6 V, including TTL-compatible output levels and 150 ns access time. It also operates at 4.5–5.5 V, making it truly dual-voltage. Programming, however, requires VCC = 6.5 V and VPP = 13.0 V-conditions met only during dedicated programming cycles, not normal read operation. So AT27LV020A-15JC delivers complete 3 V read capability without compromise.
Is AT27LV020A-15JC pin-compatible with AT27C020-15JC?
Yes-AT27LV020A-15JC uses the same 32-lead PLCC package (32J), identical pinout, and JEDEC-standard signal assignments as AT27C020-15JC. All address, data, control, and power pins map one-to-one. This enables direct socket replacement in existing 5 V designs, provided the system can accommodate the AT27LV020A-15JC's dual-voltage capability and updated programming voltage requirements.
What programming equipment is required for AT27LV020A-15JC?
AT27LV020A-15JC uses the same programming algorithms and equipment as AT27C020 due to its integrated product ID code (0x1E86) and Rapid™ programming compatibility. Industry-standard EPROM programmers that support AT27C020-including Data I/O PS-29, BP Microsystems Model 2000, and Xeltek SuperPRO-recognize and program AT27LV020A-15JC automatically when the correct device selection is made.
What is the standby current specification for AT27LV020A-15JC at 3.3 V?
At VCC = 3.3 V and CE = VCC ± 0.3 V (CMOS-mode standby), the AT27LV020A-15JC has a maximum standby current (ISB1) of 20 µA, with typical consumption less than 1 µA. This value is specified in the DC Operating Characteristics table and verified across temperature ranges. The low ISB1 enables multi-year battery life in always-on monitoring applications.
AT27LV020A-15JC 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:
- 0°C ~ 70°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-PLCC (13.97x11.43)
AT27LV020A-15JC FAQ
1.How can I place an order for AT27LV020A-15JC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT27LV020A-15JC 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-15JC reliable?
The price and inventory of AT27LV020A-15JC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT27LV020A-15JC is usually 5 days.
3.What payment methods are accepted for AT27LV020A-15JC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT27LV020A-15JC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT27LV020A-15JC?
AT27LV020A-15JC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT27LV020A-15JC 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-15JC?
For technical support, including AT27LV020A-15JC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT27LV020A-15JC requirements.
6.How does Aetrix verify that AT27LV020A-15JC is sourced from the original manufacturer or authorized distributors?
All AT27LV020A-15JC 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-15JC meets industry standards.
7.What is the process for return or replacement of AT27LV020A-15JC?
All AT27LV020A-15JC units undergo pre-shipment inspection (PSI). If there is an issue with AT27LV020A-15JC, 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-15JC part is unused and in its original packaging.
Return procedure for AT27LV020A-15JC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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