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Microchip Technology AT27BV1024-15JI
- Part No.:
- AT27BV1024-15JI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 44-LCC (J-Lead)
- Datasheet:
-
AT27BV1024-15JI.pdf
- Description:
- IC EPROM 1MBIT PARALLEL 44PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:4,376
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Product details
Overview
AT27BV1024-15JI from Atmel is a 1-Mbit (64K × 16) one-time programmable EPROM optimized for low-voltage battery-powered systems, featuring 150 ns read access time, dual supply operation (2.7–3.6 V or 4.5–5.5 V), and industrial temperature range (−40°C to +85°C). It delivers TTL-compatible outputs at 3.0 V and supports rapid programming at 100 µs/word.
For engineers reviewing the AT27BV1024-15JI datasheet, AT27BV1024-15JI pinout, AT27BV1024-15JI application, or AT27BV1024-15JI equivalent, key selection criteria include unregulated battery voltage support, JEDEC PLCC-44 pin compatibility with AT27C1024, standby current ≤20 µA at 3.6 V, and integrated product identification code for automated programming.
Technical Context
The AT27BV1024-15JI implements a CMOS OTP EPROM architecture with two-line control (CE/OE), enabling bus contention avoidance in microprocessor-based systems. Its by-16 organization and dual-voltage operation allow direct interface with 16-bit data buses across both regulated and unregulated battery supplies.
It uses Atmel's Rapid™ Programming Algorithm with 100 µs/word pulse width and 13.0 V VPP programming voltage, while maintaining full electrical compatibility with standard 5 V AT27C1024 programming equipment. Product identification is accessed via A9 = 12.0 V and A0 toggling, returning manufacturer code 001Eh and device code 00F1h.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1,048,576 bits (64K × 16) - supports full 16-bit data bus without multiplexing |
| Read Access Time | 150 ns max - defines minimum clock cycle for reliable read timing in 6.67 MHz systems |
| Supply Voltage Range | 2.7 V to 3.6 V or 4.5 V to 5.5 V - eliminates need for voltage regulation in portable designs |
| Standby Current | 20 µA max at VCC = 3.6 V - enables multi-year battery life in always-on embedded storage |
| Programming Voltage | VPP = 13.0 V ± 0.25 V - requires dedicated high-voltage supply during programming only |
| Operating Temperature | −40°C to +85°C - qualified for industrial-grade environmental stress and thermal cycling |
| ESD Protection | 2,000 V HBM - ensures robust handling during board assembly and field service |
Pinout & Package
AT27BV1024-15JI is supplied in a 44-lead Plastic Leaded Chip Carrier (PLCC) package per JEDEC MS-018 AC. Pin 1 is marked by corner notch; pins 1 and 23 are No Connect (NC). Both GND pins (pins 20 and 31) must be connected to system ground.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A15 | Address Inputs | 16-bit address bus interface; latched on CE falling edge for memory location selection |
| O0–O15 | Data Outputs | True 16-bit parallel output bus; high-impedance when OE or CE inactive |
| CE | Chip Enable | Active-low global enable; controls device activation and power state transitions |
| OE | Output Enable | Active-low output gate; allows shared bus operation without disabling chip |
| PGM | Program Strobe | Active-low programming trigger; initiates 100 µs write pulse under VPP = 13.0 V |
| VCC | Power Supply | Main logic supply; must be applied before/with VPP and removed after/with VPP |
| VPP | Programming Voltage | 13.0 V programming supply; isolated from VCC except during programming |
| NC | No Connect | Pins 1 and 23 - must remain unconnected per datasheet; no internal connection |
Key Features
| Feature | Design Value |
|---|---|
| Rapid™ Programming | 100 µs/word typical - reduces production programming time by >90% vs. legacy EPROMs |
| Dual-Voltage Read Mode | 2.7–3.6 V or 4.5–5.5 V - enables single part number deployment across 3 V and 5 V host systems |
| Integrated ID Code | Manufacturer 001Eh / Device 00F1h - enables automatic algorithm selection in universal programmers |
| JEDEC PLCC-44 Compatibility | Pin-for-pin match with AT27C1024 - allows drop-in replacement without PCB redesign |
| Low-Power Standby | <1 µA typical at 3.0 V - extends battery runtime in always-on firmware storage applications |
Applications
| Portable Medical Devices | Industrial PLC Firmware Storage |
|---|---|
Use Scenario: Battery-powered handheld diagnostic instruments requiring nonvolatile firmware storage with minimal power draw between measurements. IC Role / Device Role / Timing Role: OTP EPROM storing boot code and calibration tables; accessed during cold start and periodic self-test. Use Value: Unregulated 2.7–3.6 V operation eliminates DC/DC converter, reducing BOM cost and board area by ~30%. |
Use Scenario: Programmable logic controller modules deployed in factory automation environments with wide ambient temperature swings. IC Role / Device Role / Timing Role: Primary firmware storage for real-time control engine; read during power-up and watchdog-triggered reset. Use Value: −40°C to +85°C rating and 2,000 V ESD protection ensure reliable operation in electrically noisy industrial settings. |
| Legacy System Upgrades | Embedded Test Equipment |
Use Scenario: Retrofitting aging 5 V industrial controllers with low-power replacements while retaining existing PCB layout. IC Role / Device Role / Timing Role: Direct AT27C1024 replacement delivering identical pinout, timing, and programming behavior. Use Value: JEDEC PLCC-44 pin compatibility and same 100 µs/word programming algorithm enable zero-change hardware migration. |
Use Scenario: Automated test fixtures requiring field-upgradable firmware stored in tamper-resistant nonvolatile memory. IC Role / Device Role / Timing Role: Secure, one-time-programmable storage for calibration constants and test sequence definitions. Use Value: Integrated product ID code prevents accidental programming of wrong device type during high-volume fixture reconfiguration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar OTP EPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT27C1024-15JC | 5 V only (4.5–5.5 V); no low-voltage operation; same 150 ns speed and PLCC-44 package | Requires regulated 5 V supply; unsuitable for battery-only systems | Select when legacy 5 V infrastructure prohibits voltage scaling and industrial temp not required |
| MN63C1024-15 | Same 64K × 16 organization and 150 ns speed; 44-pin PLCC; operates 4.5–5.5 V only; no VPP pin or rapid programming | Lacks integrated ID code and rapid programming; requires longer 10 ms/byte programming | Choose for cost-sensitive 5 V-only applications where programming throughput is secondary |
Compared with AT27C1024-15JC and MN63C1024-15, the AT27BV1024-15JI uniquely supports unregulated battery voltage, delivers 100× faster programming, and includes electronic ID verification-making it the only option for portable, field-programmable, and mixed-voltage industrial deployments.
Availability
AT27BV1024-15JI is available at Aetrix Electronics and suitable for portable medical devices, industrial PLC firmware storage, legacy system upgrades, and embedded test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AT27BV1024-15JI 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 applications.
The AT27BV1024 product line was designed to replace obsolete 5 V EPROMs in battery-powered and mixed-voltage embedded systems, emphasizing ultra-low standby power, rapid field programming, and seamless compatibility with legacy toolchains.
FAQ
What is the maximum operating voltage for AT27BV1024-15JI during normal read operation?
The AT27BV1024-15JI supports two distinct read supply ranges: 2.7 V to 3.6 V for low-voltage battery operation, and 4.5 V to 5.5 V for standard 5 V systems. Operation outside these ranges - including 3.7–4.4 V - is not specified and may result in unreliable read behavior or excessive current draw. The AT27BV1024-15JI does not support intermediate voltages.
Can AT27BV1024-15JI be programmed using standard AT27C1024 programming equipment?
Yes, the AT27BV1024-15JI is fully programming-compatible with AT27C1024 equipment. It uses identical programming algorithms, pin assignments, and timing (100 µs/word), and returns the same manufacturer (001Eh) and device (00F1h) identification codes. The AT27BV1024-15JI requires VPP = 13.0 V during programming, which most AT27C1024 programmers support via selectable voltage mode.
Does AT27BV1024-15JI require external decoupling capacitors, and if so, what values?
Yes, the AT27BV1024-15JI requires two decoupling capacitors: a 0.1 µF ceramic capacitor placed directly between VCC and GND, as close to the device as possible, to suppress switching transients; and a 4.7 µF bulk electrolytic capacitor near the power entry point for arrays of multiple devices. These are mandatory per the datasheet to prevent non-conformance due to voltage excursions during CE transitions.
What is the function of the PGM pin on AT27BV1024-15JI, and when is it active?
The PGM pin on AT27BV1024-15JI is an active-low programming strobe used exclusively during write operations. It must be held low for exactly 95–105 µs while VPP = 13.0 V and CE = VIL to program a single word. During read or standby modes, PGM is ignored - the AT27BV1024-15JI functions identically whether PGM is tied high or left floating.
Is AT27BV1024-15JI pin-compatible with AT27C1024 in the PLCC-44 package?
Yes, the AT27BV1024-15JI in the 44J (PLCC-44) package is JEDEC-pin-compatible with AT27C1024. Pin functions, numbering, and physical dimensions match exactly - including NC assignment on pins 1 and 23 and mandatory connection of both GND pins (20 and 31). This allows direct PCB-level substitution without layout changes.
AT27BV1024-15JI 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:
- 150 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:
- 44-PLCC (16.6x16.6)
AT27BV1024-15JI FAQ
1.How can I place an order for AT27BV1024-15JI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT27BV1024-15JI 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 AT27BV1024-15JI reliable?
The price and inventory of AT27BV1024-15JI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT27BV1024-15JI is usually 5 days.
3.What payment methods are accepted for AT27BV1024-15JI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT27BV1024-15JI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT27BV1024-15JI?
AT27BV1024-15JI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT27BV1024-15JI 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 AT27BV1024-15JI?
For technical support, including AT27BV1024-15JI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT27BV1024-15JI requirements.
6.How does Aetrix verify that AT27BV1024-15JI is sourced from the original manufacturer or authorized distributors?
All AT27BV1024-15JI 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 AT27BV1024-15JI meets industry standards.
7.What is the process for return or replacement of AT27BV1024-15JI?
All AT27BV1024-15JI units undergo pre-shipment inspection (PSI). If there is an issue with AT27BV1024-15JI, 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 AT27BV1024-15JI part is unused and in its original packaging.
Return procedure for AT27BV1024-15JI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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