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Microchip Technology AT27C2048-15PI
- Part No.:
- AT27C2048-15PI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 40-DIP (0.600", 15.24mm)
- Datasheet:
-
AT27C2048-15PI.pdf
- Description:
- IC EPROM 2MBIT PARALLEL 40DIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,190
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Product details
Overview
AT27C2048-15PI from Atmel is a 2-Mbit (128K × 16) one-time programmable EPROM optimized for high-performance 16/32-bit microprocessor systems, featuring 150 ns maximum read access time, 5V ±10% supply operation, and industrial temperature range (–40°C to +85°C). It supports rapid programming at 50 µs/word and delivers 35 mA active current at 5 MHz.
For engineers reviewing the AT27C2048-15PI datasheet, AT27C2048-15PI pinout, AT27C2048-15PI application, or AT27C2048-15PI equivalent, key selection considerations include its 40-pin PDIP industrial-grade packaging, dual-line control (CE/OE), CMOS/TTL compatibility, and direct upgrade path from AT27C516 and AT27C1024 EPROMs in legacy firmware storage designs.
Technical Context
The AT27C2048-15PI implements a standard OTP EPROM architecture with X/Y decoding, output buffers, and integrated product identification logic. Its two-line enable scheme (CE and OE) enables bus contention avoidance in high-speed memory subsystems, while the PGM pin controls rapid programming mode under 13.0 V VPP.
It operates exclusively in 5V read mode but requires elevated VPP (13.0 V ±0.25 V) and VCC (6.5 V ±0.25 V) during programming. The device features electrically identifiable manufacturer and device codes via A9 and A0 toggling, supporting automated programming equipment recognition.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2,097,152 bits (128K × 16) - supports full 16-bit data bus interfacing without byte-lane splitting |
| Read Access Time | 150 ns max - eliminates WAIT states in 6–7 MHz microprocessor systems |
| Supply Voltage | 5V ±10% - compatible with standard TTL/CMOS logic rails; no auxiliary voltage required for read operation |
| Active Current | 35 mA max at 5 MHz - enables stable operation in power-constrained embedded controllers |
| Standby Current | 100 µA max - reduces quiescent power in battery-backed or low-power hold modes |
| Programming Voltage | VPP = 13.0 V ±0.25 V - requires dedicated programming supply; not supported in-system |
| ESD Protection | 2,000 V HBM - ensures robust handling during board assembly and rework |
Pinout & Package
AT27C2048-15PI is supplied in a 40-lead, 0.600" wide plastic dual inline package (PDIP), JEDEC MS-011 AC compliant, with 0.100" lead pitch and through-hole mounting.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit address bus supporting full 128K-word addressing; A0 LSB, A16 MSB |
| O0–O15 | Data Outputs | 16-bit bidirectional data bus; outputs only - no input capability during read |
| CE | Chip Enable | Active-low global enable; must be asserted before OE for valid read access |
| OE | Output Enable | Active-low output gate; controls data bus drive timing independently of CE |
| PGM | Program Strobe | Active-low signal initiating rapid programming cycle under VPP = 13 V |
| VPP | Programming Supply | 13 V input required only during programming; must be applied after and removed before VCC |
| VCC | Power Supply | 5 V ±10% main supply; powers all logic and output buffers in read mode |
| GND (Pins 12 & 39) | Ground | Both pins must be connected to system ground plane for noise immunity and ESD path integrity |
Key Features
| Feature | Design Value |
|---|---|
| Rapid™ Programming Algorithm | 50 µs/word typical programming time with auto-verify loop - reduces firmware burn time by >90% vs. legacy EPROMs |
| Integrated Product Identification Code | Manufacturer ID (001Eh) and Device Code (00F7h) readable via A9/A0 control - enables automatic algorithm selection in production programmers |
| Two-Line Control (CE/OE) | Independent chip and output enables - allows interleaved memory access and eliminates bus contention in multi-device systems |
| JEDEC-Standard PDIP Packaging | 40P6 footprint - ensures drop-in replacement for AT27C516 and AT27C1024 in existing PCB layouts |
| Industrial Temperature Range | –40°C to +85°C operation - qualified for use in motor drives, industrial PLCs, and outdoor telemetry hardware |
Applications
| Industrial Firmware Storage | Legacy Microprocessor Boot ROM |
|---|---|
Use Scenario: Storing boot code and configuration parameters in programmable logic controllers (PLCs) operating in factory environments with wide ambient temperature swings. IC Role / Device Role / Timing Role: Non-volatile boot ROM providing deterministic 150 ns read access to initialize CPU and peripherals at power-on. Use Value: Eliminates need for external WAIT-state generators; 100 µA standby current extends uptime in brownout conditions. |
Use Scenario: Replacing obsolete 512K-bit and 1M-bit EPROMs in aging 16-bit industrial computers using Intel 80C186 or Motorola 68020 processors. IC Role / Device Role / Timing Role: Pin-compatible OTP memory upgrade delivering 2× density without layout changes. Use Value: Enables larger firmware images (e.g., expanded diagnostics, multi-language UI) while retaining same PCB footprint and timing margins. |
| Embedded Instrumentation Calibration Data | Avionics Configuration Memory |
Use Scenario: Storing sensor calibration coefficients and linearization tables in portable test equipment requiring long-term data retention without battery backup. IC Role / Device Role / Timing Role: Read-only memory accessed during instrument startup to load correction factors into RAM. Use Value: 2,000 V ESD rating prevents field-programming damage during technician handling; 128K × 16 organization matches 16-bit ADC/DAC interface widths. |
Use Scenario: Holding flight-critical configuration maps (e.g., trim tables, sensor bias offsets) in certified avionics modules where reprogrammability is prohibited post-certification. IC Role / Device Role / Timing Role: One-time programmable non-volatile memory ensuring immutable configuration data across aircraft service life. Use Value: Rapid programming with auto-verify guarantees first-pass programming success; latchup immunity (200 mA) withstands transient coupling on shared power rails. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar OTP EPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT27C020-15PI | 2-Mbit (256K × 8) organization; single 8-bit data bus; identical 150 ns tACC and PDIP-40 package | Requires external byte-width multiplexing for 16-bit systems; not pin-compatible with AT27C2048-15PI | Select when migrating 8-bit microcontrollers or when board layout permits data bus reconfiguration |
| MX27C2048-15PC | Functionally identical 128K × 16 OTP EPROM; same AC/DC specs and pinout; manufactured by Macronix | Same industrial temperature range and programming algorithm; verified drop-in replacement per distributor cross-reference data | Preferred for dual-sourcing; identical PCB integration with no design change required |
Compared with AT27C2048-15PI, AT27C020-15PI offers byte-wide access but demands bus redesign, whereas MX27C2048-15PC provides true pin-and-function equivalence with guaranteed second-source availability for long-lifecycle industrial programs.
Availability
AT27C2048-15PI is available at Aetrix Electronics and suitable for industrial automation, legacy system repair, avionics configuration, and embedded instrumentation requiring stable component supply over extended production lifecycles.
Supply support for AT27C2048-15PI 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 was a U.S.-based semiconductor company specializing in microcontrollers, non-volatile memory, and programmable logic devices before its acquisition by Microchip Technology in 2016.
The AT27C2048 series was designed as a high-reliability, industry-temperature OTP EPROM family targeting firmware storage in mission-critical industrial and aerospace systems where EEPROM endurance or Flash write cycles were unacceptable.
FAQ
What is the operating temperature range for AT27C2048-15PI?
The AT27C2048-15PI is rated for industrial operation from –40°C to +85°C. This range is validated per JEDEC JESD22-A108 and confirmed in the device's ordering information table, where the "I" suffix denotes industrial grade. It is not rated for extended temperature or automotive AEC-Q100 compliance.
Does AT27C2048-15PI support in-system programming?
No, AT27C2048-15PI does not support in-system programming. Programming requires 13.0 V VPP applied externally, strict sequencing (VCC before VPP, VPP before removal), and dedicated EPROM programmers such as Data I/O PS-3000 or BP Microsystems units. The device lacks internal charge pumps or serial interfaces for embedded reprogramming.
Is AT27C2048-15PI pin-compatible with AT27C1024?
Yes, AT27C2048-15PI shares the same 40-pin PDIP (40P6) footprint and pin functions as AT27C1024, including identical CE, OE, PGM, VPP, and address/data assignments. However, AT27C2048-15PI adds A16 and O15–O8 signals to support its 128K × 16 organization - these pins are no-connect on AT27C1024, so direct replacement requires verifying host system address/data bus width.
What decoupling capacitors are required for AT27C2048-15PI?
Per Atmel's System Considerations section, AT27C2048-15PI requires a 0.1 µF ceramic capacitor placed between VCC and GND as close as possible to the device, plus a 4.7 µF bulk electrolytic capacitor near the power entry point for arrays. These suppress transients induced during CE transitions and stabilize VCC during rapid output switching.
How is the product identification code read from AT27C2048-15PI?
The AT27C2048-15PI identification code is read by holding A1–A16 low, applying VH (12.0 V ±0.5 V) to A9, and toggling A0: A0 = VIL selects the Manufacturer ID (001Eh), A0 = VIH selects the Device Code (00F7h). Both codes appear on O15–O0 during a standard read cycle with CE and OE asserted.
AT27C2048-15PI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 40-DIP (0.600", 15.24mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EPROM
- Technology:
- EPROM - OTP
- Memory Size:
- 2Mbit
- Memory Organization:
- 128K x 16
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- -
- Access Time:
- 150 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 40-PDIP
AT27C2048-15PI FAQ
1.How can I place an order for AT27C2048-15PI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT27C2048-15PI 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 AT27C2048-15PI reliable?
The price and inventory of AT27C2048-15PI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT27C2048-15PI is usually 5 days.
3.What payment methods are accepted for AT27C2048-15PI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT27C2048-15PI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT27C2048-15PI?
AT27C2048-15PI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT27C2048-15PI 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 AT27C2048-15PI?
For technical support, including AT27C2048-15PI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT27C2048-15PI requirements.
6.How does Aetrix verify that AT27C2048-15PI is sourced from the original manufacturer or authorized distributors?
All AT27C2048-15PI 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 AT27C2048-15PI meets industry standards.
7.What is the process for return or replacement of AT27C2048-15PI?
All AT27C2048-15PI units undergo pre-shipment inspection (PSI). If there is an issue with AT27C2048-15PI, 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 AT27C2048-15PI part is unused and in its original packaging.
Return procedure for AT27C2048-15PI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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