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Microchip Technology AT27BV020-90VI
- Part No.:
- AT27BV020-90VI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 32-TFSOP (0.488", 12.40mm Width)
- Datasheet:
-
AT27BV020-90VI.pdf
- Description:
- IC EPROM 2MBIT PARALLEL 32VSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,873
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Product details
Overview
AT27BV020-90VI from Atmel is a 2-Mbit (256K × 8) one-time programmable EPROM with 90 ns read access time, dual-voltage operation (2.7–3.6 V or 4.5–5.5 V), and PLCC-32 packaging. It serves as nonvolatile program storage in battery-powered portable systems, embedded controllers, and legacy industrial firmware modules requiring unregulated low-voltage support.
For engineers reviewing the AT27BV020-90VI datasheet, AT27BV020-90VI pinout, AT27BV020-90VI application, or AT27BV020-90VI equivalent, key selection criteria include its 90 ns tACC at 3.6 V, <1 µA typical standby current, JEDEC-compatibility with AT27C020, Rapid™ programming algorithm (100 µs/byte), and industrial temperature range (−40°C to +85°C).
Technical Context
The AT27BV020-90VI implements a CMOS OTP EPROM architecture with two-line control (CE/OE), supporting both TTL- and LVBO-compatible I/O levels across supply ranges. Its address space spans A0–A17 (18-bit), enabling full 256K-word addressing, and includes dedicated PGM and VPP pins for high-voltage programming at 13.0 V.
It features integrated product identification (Manufacturer ID = 0x1E, Device ID = 0x86), 2,000 V ESD protection, and latch-up immunity of 200 mA. Programming requires VCC = 6.5 V and VPP = 13.0 V, with strict sequencing (VCC applied before/with VPP), and supports verification via PGM Verify mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2,097,152 bits (256K × 8), sufficient for boot code or fixed firmware in microcontroller-based systems. |
| Read Access Time | 90 ns max at VCC = 2.7–3.6 V, enabling direct interface with 10 MHz bus systems without wait states. |
| Supply Voltage Range | 2.7–3.6 V (unregulated battery) or 4.5–5.5 V (standard 5 V), allowing drop-in use in dual-supply host systems. |
| Standby Current | 20 µA max (CMOS CE), <1 µA typical at 3 V - extends battery life in always-on portable devices. |
| Programming Speed | 100 µs/byte typical using Rapid™ algorithm, reducing production programming cycle time vs. legacy EPROMs. |
| Operating Temperature | −40°C to +85°C (industrial grade), validated for deployment in motor drives, PLCs, and outdoor instrumentation. |
| ESD Protection | 2,000 V HBM, ensuring robustness during board handling and field replacement in factory environments. |
Pinout & Package
AT27BV020-90VI is housed in a 32-lead Plastic Leaded Chip Carrier (PLCC-32), JEDEC MS-016 AE compliant, with 1.27 mm pitch and body size 13.9 × 13.9 mm. Pin 1 is marked by index notch at top-left corner (top view).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A17 | Address Inputs | 18-bit address bus for full 256K-word decoding; A17 enables upper half of memory map. |
| O0–O7 | Data Outputs | 8-bit bidirectional data bus in read mode; high-impedance when OE or CE inactive. |
| CE | Chip Enable | Active-low global enable; controls device selection and power state transition (active/standby). |
| OE | Output Enable | Active-low output gate; allows shared bus operation without contention when CE is asserted. |
| PGM | Program Strobe | Active-low pulse input triggering byte programming under VPP = 13.0 V; initiates Rapid™ algorithm sequence. |
| VPP | Programming Voltage | 13.0 V ± 0.25 V input for oxide breakdown during programming; requires external decoupling capacitor. |
| VCC | Power Supply | Primary supply: 2.7–3.6 V (low-power mode) or 4.5–5.5 V (TTL compatibility); powers logic and outputs. |
| GND | Ground Reference | Signal and power return path; must be connected to system ground plane with low-inductance layout. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-Voltage Read Operation | Supports both unregulated 2.7–3.6 V battery rails and standard 5 V systems - eliminates need for voltage regulators in portable designs. |
| Rapid™ Programming Algorithm | 100 µs/byte typical programming time with auto-verify loop - reduces production test time and improves yield in high-volume firmware loading. |
| Integrated Product ID Code | Manufacturer ID (0x1E) and Device ID (0x86) accessible via A9/VH and A0 toggle - enables automatic algorithm selection in universal programmers. |
| JEDEC AT27C020 Compatibility | Pin-, function-, and programming-equivalent to AT27C020 - allows migration to lower-voltage operation without PCB or firmware changes. |
| Low-Power Standby Mode | 20 µA max ICC in standby (CE = VIH), <1 µA typical at 3 V - critical for energy-constrained IoT edge nodes and handheld instruments. |
Applications
| Portable Medical Instrumentation | Industrial PLC Firmware Storage |
|---|---|
Use Scenario: Battery-powered handheld glucose meters and portable ECG monitors requiring long shelf life and reliable firmware retention. IC Role / Device Role / Timing Role: Nonvolatile program memory storing calibration routines and safety-critical boot code; accessed during cold start and periodic self-test. Use Value: 2.7–3.6 V operation eliminates DC-DC regulation, while <1 µA standby current extends single-cell CR2032 battery life beyond 5 years. | Use Scenario: Fixed-function logic controllers in factory automation where firmware must survive power loss and thermal cycling. IC Role / Device Role / Timing Role: OTP storage for ladder logic interpreter and I/O mapping tables; read-only during runtime to prevent corruption. Use Value: −40°C to +85°C rating ensures reliability in uncontrolled cabinet environments; JEDEC compatibility simplifies legacy design refresh. |
| Legacy Embedded Controller Boot ROM | Card-Based Test Equipment Firmware |
Use Scenario: Microcontroller-based HVAC controllers and motor drives using mask-ROM-replacement firmware images. IC Role / Device Role / Timing Role: Primary boot ROM mapped at reset vector; delivers first instruction within 90 ns after address stabilization. Use Value: 90 ns tACC enables zero-wait-state execution on 8-bit MCUs running at ≤10 MHz, improving real-time response. | Use Scenario: Modular test platforms (e.g., PXI, VXI) where field-replaceable cards require tamper-proof, version-controlled firmware. IC Role / Device Role / Timing Role: Secure, one-time-programmable image store; programmed once at factory, verified via ID code before deployment. Use Value: Integrated ID code (0x1E/0x86) and Rapid™ programming allow automated traceability and batch verification in ATE systems. |
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 | 5 V only (4.5–5.5 V), no low-voltage operation; same pinout, timing, and programming interface. | Requires regulated 5 V supply; unsuitable for battery-powered systems with unregulated rails. | Select when legacy 5 V infrastructure exists and low-voltage operation is unnecessary. |
| MX29LV200CTTI-90G | Flash-based (not OTP), 3 V only (2.7–3.6 V), 100,000 write cycles; different command set and sector architecture. | Enables field firmware updates; incompatible with EPROM programmers and boot ROM timing assumptions. | Select only if reprogrammability and in-system update capability are required over OTP security and simplicity. |
Compared with AT27C020-90JC, the AT27BV020-90VI adds battery-friendly low-voltage operation but retains identical programming flow; versus MX29LV200CTTI-90G, it trades reprogrammability for deterministic OTP behavior and simpler system integration.
Availability
AT27BV020-90VI is available at Aetrix Electronics and suitable for portable medical instrumentation, industrial PLC firmware storage, and legacy embedded controller boot ROM applications requiring stable component supply across extended product lifecycles.
Supply support for AT27BV020-90VI 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 AT27BV020 belongs to Atmel's BV-series low-voltage OTP EPROM product line, designed specifically to replace 5 V EPROMs in battery-operated and mixed-supply embedded systems without sacrificing speed or compatibility.
FAQ
What is the maximum operating temperature range for the AT27BV020-90VI?
The AT27BV020-90VI is rated for industrial temperature operation from −40°C to +85°C. This specification is validated per the device's ordering code suffix 'I' and confirmed in the DC Operating Conditions table. The AT27BV020-90VI maintains full functionality-including 90 ns read access and <20 µA standby current-across this full range, making it suitable for deployment in harsh environments such as factory floors and outdoor control cabinets.
Does the AT27BV020-90VI require a separate programming voltage supply?
Yes, the AT27BV020-90VI requires VPP = 13.0 V ± 0.25 V during programming, supplied independently from VCC. This high voltage is applied to the VPP pin while VCC is held at 6.5 V ± 0.25 V. The AT27BV020-90VI does not generate VPP internally; external circuitry must provide and sequence VPP relative to VCC (VCC must be applied before or simultaneously with VPP). A 0.1 µF capacitor between VPP and GND is mandatory to suppress transients.
Is the AT27BV020-90VI pin-compatible with the AT27C020?
Yes, the AT27BV020-90VI is pin-compatible and functionally compatible with the AT27C020 across all packages, including PLCC-32. Both share identical pin assignments, signal definitions, timing parameters (e.g., tACC = 90 ns), and programming protocols. The AT27BV020-90VI extends compatibility by adding 2.7–3.6 V operation while retaining full interoperability with existing AT27C020 hardware and programming equipment.
What is the typical standby current consumption of the AT27BV020-90VI at 3.0 V?
The typical standby current consumption of the AT27BV020-90VI at 3.0 V is less than 1 µA, as specified in the datasheet's DC Operating Characteristics table under ISB1 (CMOS standby). This ultra-low value is achieved when CE is held high (VIH) and applies across the full industrial temperature range. The AT27BV020-90VI achieves this performance through optimized CMOS design and process technology, directly extending battery life in always-on portable systems.
How does the Rapid™ Programming Algorithm improve production efficiency for the AT27BV020-90VI?
The Rapid™ Programming Algorithm reduces average programming time to 100 µs per byte, significantly faster than conventional EPROM algorithms. It uses a verify-and-reprogram loop with up to 10 pulses per byte, ensuring high yield without over-stressing the oxide. For a full 256K-byte image, this cuts total programming time by >60% versus legacy methods. The AT27BV020-90VI leverages this algorithm to accelerate firmware loading in manufacturing test lines while maintaining data integrity and endurance.
AT27BV020-90VI 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:
- 90 ns
- Voltage - Supply:
- 2.7V ~ 3.6V, 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-VSOP
AT27BV020-90VI FAQ
1.How can I place an order for AT27BV020-90VI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT27BV020-90VI 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 AT27BV020-90VI reliable?
The price and inventory of AT27BV020-90VI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT27BV020-90VI is usually 5 days.
3.What payment methods are accepted for AT27BV020-90VI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT27BV020-90VI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT27BV020-90VI?
AT27BV020-90VI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT27BV020-90VI 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 AT27BV020-90VI?
For technical support, including AT27BV020-90VI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT27BV020-90VI requirements.
6.How does Aetrix verify that AT27BV020-90VI is sourced from the original manufacturer or authorized distributors?
All AT27BV020-90VI 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 AT27BV020-90VI meets industry standards.
7.What is the process for return or replacement of AT27BV020-90VI?
All AT27BV020-90VI units undergo pre-shipment inspection (PSI). If there is an issue with AT27BV020-90VI, 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 AT27BV020-90VI part is unused and in its original packaging.
Return procedure for AT27BV020-90VI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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