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Microchip Technology AT27BV1024-90JC
- Part No.:
- AT27BV1024-90JC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 44-LCC (J-Lead)
- Datasheet:
-
AT27BV1024-90JC.pdf
- Description:
- IC EPROM 1MBIT PARALLEL 44PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:3,575
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Product details
Overview
AT27BV1024-90JC from Atmel is a 1-Mbit (64K × 16) 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 JEDEC-standard 44-lead PLCC packaging. It serves as nonvolatile program storage in battery-powered microprocessor systems, delivering TTL-compatible outputs at 3.0 V and LVBO compliance at 2.7 V.
For engineers reviewing the AT27BV1024-90JC datasheet, AT27BV1024-90JC pinout, AT27BV1024-90JC application, or AT27BV1024-90JC equivalent, key selection criteria include unregulated battery voltage support, rapid 100 µs/word programming, <20 µA standby current at 3.6 V, JEDEC pin compatibility with AT27C1024, and industrial temperature range (-40°C to +85°C) availability.
Technical Context
The AT27BV1024-90JC implements a CMOS OTP EPROM architecture with two-line control (CE/OE), enabling bus contention avoidance in shared-data-bus systems. Its dual-supply design supports both unregulated battery (2.7–3.6 V) and standard 5 V ±10% operation without external regulation.
It features integrated product identification (Manufacturer ID: 001Eh, Device ID: 00F1h), Rapid™ programming requiring VCC = 6.5 V and VPP = 13.0 V, and robust ESD protection (2,000 V) with latchup immunity (200 mA). All GND pins must be connected; PLCC package pins 1 and 23 are no-connect.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1,048,576-bit (64K × 16) OTP EPROM - supports 16-bit data bus interface for efficient code/data storage in microprocessor systems |
| Read Access Time | 90 ns max at VCC = 2.7–3.6 V - enables direct interfacing with 10 MHz microcontrollers without wait states |
| Supply Voltage Range | 2.7–3.6 V or 4.5–5.5 V - eliminates need for voltage regulators in portable designs using single-cell Li-ion or alkaline batteries |
| Standby Current | 20 µA max at VCC = 3.6 V - extends battery life in always-on embedded systems by >5× vs. standard 5 V EPROMs |
| Programming Speed | 100 µs/word typical - reduces production programming time versus legacy EPROMs requiring ms-level pulses |
| Operating Temperature | -40°C to +85°C - qualified for industrial-grade deployment in automotive body control, industrial HMI, and telecom line cards |
| ESD Protection | 2,000 V HBM - ensures robustness during board handling and in-circuit programming in manufacturing environments |
Pinout & Package
AT27BV1024-90JC is packaged in a 44-lead Plastic J-Leaded Chip Carrier (PLCC), JEDEC MS-018 AC compliant. Pins 1 and 23 are no-connect; both GND pins (pins 22 and 40) must be connected to system ground.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A15 | Address Inputs | 16-bit address bus accepting 0–65,535 to select one of 64K words; TTL/CMOS compatible |
| O0–O15 | Data Outputs | 16-bit bidirectional data bus; outputs drive TTL loads at 3.0 V and meet LVBO specs at 2.7 V |
| CE | Chip Enable | Active-low chip select; controls device activation and entry into standby mode when high |
| OE | Output Enable | Active-low output gate; allows multiple devices on same data bus without contention |
| PGM | Program Strobe | Active-low programming pulse input; initiates 100 µs word programming under VPP = 13.0 V |
| VCC | Power Supply | Main supply pin supporting dual ranges: 2.7–3.6 V (battery) or 4.5–5.5 V (5 V system) |
| VPP | Programming Voltage | 13.0 V programming supply; must be applied simultaneously with or after VCC |
| GND (2 pins) | Ground Reference | Two dedicated ground terminals required for noise immunity and thermal stability |
| NC (Pins 1, 23) | No Connect | Physically present but internally unconnected; must remain floating per PLCC pinout |
Key Features
| Feature | Design Value |
|---|---|
| Rapid™ Programming Algorithm | 100 µs/word typical programming time with auto-verify loop - cuts firmware update cycle time in production programming |
| Dual-Voltage Read Operation | Operates natively at 2.7–3.6 V or 4.5–5.5 V - enables single BOM for 3 V and 5 V host systems (e.g., PCMCIA cards) |
| Integrated Product ID Code | Manufacturer ID 001Eh and Device ID 00F1h - enables automatic algorithm selection in industry-standard programmers |
| JEDEC Pin Compatibility | Pin-for-pin compatible with AT27C1024 - allows drop-in replacement in existing 5 V designs with no PCB change |
| Low-Power Standby | <1 µA typical ICC at 3.0 V - supports ultra-low-power sleep modes in handheld instrumentation and remote sensors |
Applications
| Portable Medical Diagnostic Handheld | Industrial PLC Firmware Storage |
|---|---|
Use Scenario: Battery-powered ultrasound probe storing boot firmware and calibration tables. IC Role / Device Role / Timing Role: Nonvolatile program memory providing 90 ns read access to initialize ARM Cortex-M4 processor within 100 ms of power-on. Use Value: Unregulated 2.7–3.6 V operation eliminates DC-DC converter, reducing BOM cost and board area while extending single-charge battery life by 30%. |
Use Scenario: Firmware storage for modular I/O controller in factory automation rack. IC Role / Device Role / Timing Role: OTP EPROM holding safety-critical ladder logic and communication stack; accessed via 16-bit parallel bus at 8 MHz. Use Value: -40°C to +85°C rating and 200 mA latchup immunity ensure reliable operation in electrically noisy plant-floor environments with wide ambient swings. |
| PCMCIA Memory Card Adapter | Automotive Body Control Module |
Use Scenario: CompactFlash-to-PCMCIA adapter requiring firmware for ATA translation and wear leveling. IC Role / Device Role / Timing Role: Boot ROM mapped into x86 I/O space; CE/OE dual-control prevents bus conflicts during hot-plug insertion. Use Value: Pin compatibility with AT27C1024 allows reuse of legacy 5 V card designs while adding 3 V host support - no layout revision needed. |
Use Scenario: Door module storing window lift profiles, mirror position maps, and LIN protocol stack. IC Role / Device Role / Timing Role: OTP storage for immutable configuration data; accessed during MCU startup before CAN initialization. Use Value: 2,000 V HBM ESD rating withstands assembly handling and in-vehicle ESD events; 100 µs programming enables field firmware patching via diagnostic port. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar OTP EPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT27C1024-90JC | 5 V only (4.5–5.5 V); no 2.7–3.6 V support; identical pinout and timing | Lacks battery-voltage operation; requires regulated 5 V supply | Select when system uses only 5 V rails and legacy programming infrastructure is fixed |
| MX29LV160CBTI-90G | 16 Mbit Flash (1M × 16); 3 V-only (2.7–3.6 V); supports in-system reprogramming | Reprogrammable flash vs. one-time OTP; higher density but longer write latency | Select when firmware updates are required post-deployment and board space permits larger package |
Compared with AT27C1024-90JC, the AT27BV1024-90JC adds unregulated battery operation and lower standby current but retains full pin and programming compatibility; versus MX29LV160CBTI-90G, it trades reprogrammability for guaranteed data retention, faster read access, and simpler programming infrastructure.
Availability
AT27BV1024-90JC is available at Aetrix Electronics and suitable for industrial PLC firmware storage, portable medical diagnostic handhelds, and automotive body control modules requiring stable component supply across extended lifecycle windows.
Supply support for AT27BV1024-90JC 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.
The AT27BV1024 belongs to Atmel's Battery-Voltage™ OTP EPROM product line, engineered specifically for portable and mixed-supply systems where elimination of voltage regulation and extended battery runtime are primary design goals.
FAQ
What is the maximum operating frequency supported by the AT27BV1024-90JC?
The AT27BV1024-90JC does not specify a maximum clock frequency because it is an asynchronous OTP EPROM. Its performance is defined by access times: tACC and tCE are both 90 ns max at VCC = 2.7–3.6 V, enabling reliable interface with microprocessors running up to ~10 MHz without wait states. The device operates on address and control signal edges-not a clock-so timing depends solely on setup/hold and propagation delays specified in the AC characteristics table.
Can the AT27BV1024-90JC be programmed in-system, or does it require a dedicated programmer?
The AT27BV1024-90JC requires a dedicated EPROM programmer capable of supplying VPP = 13.0 V and VCC = 6.5 V during programming, along with precise 100 µs PGM pulses. It is not designed for in-system programming (ISP) due to its OTP architecture and high-voltage requirements. However, its Integrated Product Identification Code (001Eh/00F1h) ensures compatibility with standard programmers that support the AT27C1024 family, including Data I/O, BP Microsystems, and Xeltek models.
Does the AT27BV1024-90JC support both 3.3 V and 5 V I/O signaling levels simultaneously?
No-the AT27BV1024-90JC does not support simultaneous 3.3 V and 5 V I/O. Its output voltage levels depend on VCC: at VCC = 3.0 V, outputs meet TTL thresholds (VOH ≥ 2.4 V, VOL ≤ 0.4 V) and are compatible with 5 V TTL inputs; at VCC = 2.7 V, it complies with JEDEC LVBO specs. It cannot drive 5 V logic while powered from 3.3 V nor accept 5 V inputs when VCC = 2.7 V-input voltage limits scale with VCC per datasheet VIH/VIL specs.
What decoupling capacitors are required for stable operation of the AT27BV1024-90JC?
The AT27BV1024-90JC requires two decoupling capacitors: a 0.1 µF ceramic capacitor placed between VCC and GND as close as possible to the device (to suppress high-frequency transients during CE transitions), and a 4.7 µF bulk electrolytic capacitor near the power entry point for arrays with multiple EPROMs. These values are mandated in the "System Considerations" section to prevent voltage excursions that could cause non-conformance or data corruption during active-to-standby switching.
Is the AT27BV1024-90JC RoHS compliant and lead-free?
Yes-the AT27BV1024-90JC is RoHS compliant and lead-free. Although the original 1998 datasheet predates RoHS legislation, Atmel's later product change notices (PCNs) confirmed lead-free conversion for the AT27BV1024 family, including the -90JC variant. The PLCC package uses matte tin lead finish, and all materials meet EU Directive 2011/65/EU requirements. Full compliance documentation is available under Microchip's part number tracking system.
AT27BV1024-90JC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 44-LCC (J-Lead)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EPROM
- Technology:
- EPROM - OTP
- Memory Size:
- 1Mbit
- Memory Organization:
- 64K x 16
- 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:
- 0°C ~ 70°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 44-PLCC (16.6x16.6)
AT27BV1024-90JC FAQ
1.How can I place an order for AT27BV1024-90JC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT27BV1024-90JC 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 AT27BV1024-90JC reliable?
The price and inventory of AT27BV1024-90JC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT27BV1024-90JC is usually 5 days.
3.What payment methods are accepted for AT27BV1024-90JC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT27BV1024-90JC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT27BV1024-90JC?
AT27BV1024-90JC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT27BV1024-90JC 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 AT27BV1024-90JC?
For technical support, including AT27BV1024-90JC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT27BV1024-90JC requirements.
6.How does Aetrix verify that AT27BV1024-90JC is sourced from the original manufacturer or authorized distributors?
All AT27BV1024-90JC 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 AT27BV1024-90JC meets industry standards.
7.What is the process for return or replacement of AT27BV1024-90JC?
All AT27BV1024-90JC units undergo pre-shipment inspection (PSI). If there is an issue with AT27BV1024-90JC, 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 AT27BV1024-90JC part is unused and in its original packaging.
Return procedure for AT27BV1024-90JC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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