My Inquiry
My Account
Microchip Technology AT27LV020A-90JI
- Part No.:
- AT27LV020A-90JI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-LCC (J-Lead)
- Datasheet:
-
AT27LV020A-90JI.pdf
- Description:
- IC EPROM 2MBIT PARALLEL 32PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:3,217
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AT27LV020A-90JI from Atmel is a 2-Mbit (256K × 8) one-time programmable EPROM optimized for low-voltage battery-powered systems, featuring 90 ns read access time, dual 3.0–3.6V or 4.5–5.5V supply operation, and industrial temperature range (−40°C to +85°C). It uses CMOS/TTL-compatible two-line control (CE/OE), supports Rapid™ programming at 100 µs/byte, and delivers ≤20 µA standby current at VCC = 3.6V.
For engineers reviewing the AT27LV020A-90JI datasheet, AT27LV020A-90JI pinout, AT27LV020A-90JI application, or AT27LV020A-90JI equivalent, this page provides verified technical context, JEDEC-standard package mapping, real-world timing and power behavior, and validated alternatives for legacy memory replacement in embedded controllers, BIOS storage, and industrial firmware modules.
Technical Context
The AT27LV020A-90JI implements a single-supply OTP EPROM architecture with address decoding for A0–A17 (18-bit), 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 operates across two distinct voltage domains: low-voltage mode (3.0–3.6V) with TTL-level output compatibility at VCC = 3.0V, and standard 5V ±10% mode - both supporting identical read timing (tACC = 90 ns, tOE = 50 ns) and JEDEC LVTTL I/O thresholds (VIL ≤ 0.8V, VIH ≥ 2.0V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2,097,152 bits (256K × 8) - supports full 8-bit microcontroller data bus without byte-wide addressing overhead. |
| Read Access Time | 90 ns max at VCC = 3.0–3.6V or 4.5–5.5V - meets timing budget for 11 MHz CPU bus cycles with margin. |
| Supply Voltage Range | 3.0–3.6V or 4.5–5.5V - enables drop-in use in mixed-voltage systems and legacy 5V designs with battery backup. |
| Standby Current | 20 µA max (CMOS CE), <1 µA typical at 3.3V - extends battery life in portable firmware storage applications. |
| Programming Speed | 100 µs/byte typical (Rapid™ algorithm) - reduces production programming time vs. conventional EPROMs. |
| Operating Temperature | −40°C to +85°C - qualified for industrial control, automotive body electronics, and outdoor equipment. |
| I/O Compatibility | JEDEC LVTTL - interoperates directly with 3.3V and 5V microcontrollers, FPGAs, and ASICs without level shifters. |
Pinout & Package
AT27LV020A-90JI is supplied in a 32-lead PLCC (package code 32J), JEDEC MS-016 AE compliant, with 1.27 mm pitch and J-lead geometry. Pin 1 index mark located at top-left corner of top view.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A17 | Address Inputs | 18-bit address bus interface; fully decoded to select one of 256K bytes; no internal latching. |
| O0–O7 | Data Outputs | True TTL-compatible outputs; drive 2.0 mA low / −400 µA high; high-impedance when OE or CE inactive. |
| CE | Chip Enable | Active-low global enable; controls device power state - VIH ≥ 2.0V disables outputs and enters standby. |
| OE | Output Enable | Active-low output gate; allows data read without disabling chip - used for bus sharing with other peripherals. |
| PGM | Program Strobe | Active-low pulse input during programming; requires 95–105 µs width at VPP = 13.0V for reliable byte write. |
| VPP | Programming Voltage | 13.0V ± 0.25V input during programming; must be applied simultaneously with or after VCC and decoupled with 0.1 µF ceramic. |
| NC | No Connect | Pins 14 and 15 in PLCC are unconnected - no routing or grounding required on PCB. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-Voltage Read Operation | Single part supports both 3.3V portable systems and 5V legacy hosts - eliminates BOM splits for field-upgradable hardware. |
| Rapid™ Programming Algorithm | 100 µs/byte typical programming time with auto-verify loop - cuts firmware update cycle time by >5× vs. standard EPROMs. |
| Integrated Product ID Code | Manufacturer ID (0x1E) and Device ID (0x86) readable via A9/VH and A0 toggle - enables automated programmer validation and traceability. |
| Two-Line Control Architecture | Separate CE and OE pins allow partial bus arbitration - OE can be toggled while CE remains asserted for burst reads. |
| High-Reliability Process | 2,000V HBM ESD rating and 200 mA latchup immunity - suitable for manufacturing environments and unshielded industrial enclosures. |
Applications
| Industrial PLC Firmware Storage | Embedded BIOS / Bootloader Memory |
|---|---|
|
Use Scenario: Non-volatile storage of configuration tables and safety-critical ladder logic in DIN-rail mounted programmable logic controllers. IC Role / Device Role / Timing Role: OTP EPROM providing boot-time instruction fetch and runtime parameter lookup with deterministic 90 ns access latency. Use Value: Eliminates need for external voltage translators in 3.3V controller designs while maintaining compatibility with existing 5V test fixtures. |
Use Scenario: Storing immutable boot code and hardware initialization routines in medical imaging subsystems and network appliances. IC Role / Device Role / Timing Role: Primary boot ROM accessed during cold start; supports CE-gated standby to reduce system idle power by >95%. Use Value: 20 µA max standby current extends battery-backed RTC uptime during AC power loss in critical infrastructure. |
| Legacy Industrial Instrumentation | Automotive Body Control Module (BCM) |
|
Use Scenario: Replacement memory in discontinued digital multimeters and oscilloscope front-ends requiring long-term firmware stability. IC Role / Device Role / Timing Role: Drop-in compatible upgrade for AT27C020-based designs - same pinout, timing, and programming protocol. Use Value: Enables continued production of legacy test equipment without PCB redesign or firmware revalidation. |
Use Scenario: Storing calibration data and diagnostic routines in vehicle door modules operating across −40°C to +85°C ambient. IC Role / Device Role / Timing Role: Industrial-grade OTP memory with guaranteed operation at −40°C - no derating required for cold-soak conditions. Use Value: Qualified reliability (2,000V ESD, 200 mA latchup) prevents field failures due to electrostatic discharge during assembly or service. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar OTP EPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT27C020-90JC | 5V-only supply (4.5–5.5V); no low-voltage mode; identical 90 ns timing and PLCC package. | Limited to fixed 5V systems; cannot replace AT27LV020A-90JI in battery-powered or dual-voltage designs. | Select when board already uses 5V rail and no future low-voltage migration is planned. |
| MX29LV200CTT-90G | Flash-based (not OTP); 3.0–3.6V only; 90 ns access; 32-pin TSOP; supports erase/write cycles. | Enables field firmware updates but requires different programming infrastructure and wear-leveling awareness. | Select when reprogrammability is required and PCB layout accommodates TSOP footprint. |
Compared with AT27LV020A-90JI, AT27C020-90JC lacks low-voltage operation and battery compatibility, while MX29LV200CTT-90G trades OTP security and simplicity for reprogrammability - making AT27LV020A-90JI optimal for cost-sensitive, tamper-resistant, or long-lifecycle firmware storage where updates are rare or prohibited.
Availability
AT27LV020A-90JI is available at Aetrix Electronics and suitable for industrial PLC firmware storage, embedded BIOS memory, legacy instrumentation upgrades, and automotive BCM calibration data retention requiring stable component supply across extended product lifecycles.
Supply support for AT27LV020A-90JI 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, non-volatile memory, and secure authentication ICs.
The AT27LV020A-90JI belongs to Atmel's low-voltage OTP EPROM product line, designed specifically to extend battery life and simplify power architecture in portable and mixed-voltage embedded systems without sacrificing speed or reliability.
FAQ
What is the maximum operating temperature range for the AT27LV020A-90JI?
The AT27LV020A-90JI is rated for industrial temperature operation from −40°C to +85°C. This specification is guaranteed across all electrical parameters including 90 ns access time, standby current ≤20 µA, and programming functionality - making it suitable for deployment in harsh environments such as factory automation and automotive under-hood modules.
Does the AT27LV020A-90JI require a separate programming voltage supply?
Yes, the AT27LV020A-90JI requires VPP = 13.0V ± 0.25V during programming, applied simultaneously with or after VCC. A 0.1 µF ceramic capacitor must be placed between VPP and GND to suppress transients. During normal read operation, VPP may be tied to VCC, but must be isolated during programming to avoid damage.
Is the AT27LV020A-90JI pin-compatible with the AT27C020 series?
Yes, the AT27LV020A-90JI shares identical pinout, signal definitions, and timing behavior with the AT27C020 family across all JEDEC-standard packages (PLCC, TSOP, VSOP). It maintains full functional and physical compatibility - including Rapid™ programming sequence - enabling direct replacement in existing 5V designs while adding low-voltage capability.
What is the purpose of the PGM pin on the AT27LV020A-90JI?
The PGM pin on the AT27LV020A-90JI is an active-low strobe that initiates byte programming when asserted with a 95–105 µs pulse width at VPP = 13.0V. It works in conjunction with CE and OE to enter Rapid™ programming mode - no external address latches or control logic are needed, simplifying integration into automated programming systems.
How does the AT27LV020A-90JI achieve TTL-level output compatibility at 3.0V supply?
The AT27LV020A-90JI achieves TTL-level output compatibility at VCC = 3.0V through process optimization and output driver design that ensures VOH ≥ 2.4V (at IOH = −400 µA) and VOL ≤ 0.4V (at IOL = 2.0 mA). This allows direct interfacing with legacy 5V TTL logic without level-shifting circuitry - a key enabler for hybrid-voltage system upgrades.
AT27LV020A-90JI 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:
- 90 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-90JI FAQ
1.How can I place an order for AT27LV020A-90JI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT27LV020A-90JI 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-90JI reliable?
The price and inventory of AT27LV020A-90JI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT27LV020A-90JI is usually 5 days.
3.What payment methods are accepted for AT27LV020A-90JI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT27LV020A-90JI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT27LV020A-90JI?
AT27LV020A-90JI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT27LV020A-90JI 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-90JI?
For technical support, including AT27LV020A-90JI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT27LV020A-90JI requirements.
6.How does Aetrix verify that AT27LV020A-90JI is sourced from the original manufacturer or authorized distributors?
All AT27LV020A-90JI 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-90JI meets industry standards.
7.What is the process for return or replacement of AT27LV020A-90JI?
All AT27LV020A-90JI units undergo pre-shipment inspection (PSI). If there is an issue with AT27LV020A-90JI, 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-90JI part is unused and in its original packaging.
Return procedure for AT27LV020A-90JI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT27LV020A-90JI Tags
-
M24C02-WMN6TP
STMicroelectronics
-
AT24C02C-XHM-T
Microchip Technology
-
AT21CS01-STUM10-T
Microchip Technology
-
AT24C02C-SSHM-T
Microchip Technology
-
24LC01BT-I/OT
Microchip Technology
-
M24C02-FMC6TG
STMicroelectronics
-
AT24CS02-SSHM-T
Microchip Technology
-
93LC46BT-I/OT
Microchip Technology
-
AT24C04C-SSHM-T
Microchip Technology
-
24LC01BT-I/SN
Microchip Technology
-
24AA02UIDT-I/OT
Microchip Technology
-
AT24C08C-STUM-T
Microchip Technology
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
