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Microchip Technology AT27C2048-15VI
- Part No.:
- AT27C2048-15VI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 40-TFSOP (0.488", 12.40mm Width)
- Datasheet:
-
AT27C2048-15VI.pdf
- Description:
- IC EPROM 2MBIT PARALLEL 40VSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,236
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Product details
Overview
AT27C2048-15VI from Atmel is a 2-Mbit (128K × 16) one-time programmable EPROM with 55 ns read access time, 5V ±10% supply operation, and industrial temperature range (–40°C to +85°C). It features dual-line control (CE/OE), CMOS/TTL-compatible I/O, and rapid 50 µs/word programming. Used for firmware storage in 16/32-bit microprocessor systems where non-volatile, pin-compatible EPROM upgrade is required.
For engineers reviewing the AT27C2048-15VI datasheet, AT27C2048-15VI pinout, AT27C2048-15VI application, or AT27C2048-15VI equivalent, key selection criteria include read timing (tACC = 150 ns), standby current (≤100 µA), VSOP-40 package compatibility, and OTP reliability for embedded boot code storage.
Technical Context
The AT27C2048-15VI implements a 128K × 16-bit OTP memory array with address decoding via X/Y architecture and output buffering controlled by CE and OE. Its two-line enable logic eliminates bus contention in high-speed systems, and the integrated product identification code (Manufacturer ID: 001Eh, Device ID: 00F7h) enables automated programming equipment recognition.
It supports Rapid™ programming using 13.0 V VPP and 6.5 V VCC, with verified write cycles requiring ≤50 µs per word and up to 10 reprogramming attempts per failed location. The device operates in five distinct modes - Read, Output Disable, Standby, Rapid Program, and Product Identification - each defined by specific CE/OE/PGM voltage combinations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2,097,152 bits (128K words × 16 bits) - supports full 16-bit data bus interface without byte-lane splitting. |
| Read Access Time | 150 ns max (tACC) - ensures no WAIT states needed in 6.67 MHz bus systems. |
| Supply Voltage | 5V ±10% - compatible with standard TTL/CMOS logic rails; VPP = 13.0 V required only during programming. |
| Standby Current | ≤100 µA (ISB1, CMOS-level CE) - enables low-power retention in battery-backed or intermittent-read systems. |
| Active Current | ≤35 mA at 5 MHz - defines thermal budget for dense EPROM arrays on PCBs. |
| ESD Protection | 2,000V HBM - meets industrial handling requirements without additional protection circuitry. |
| Latchup Immunity | 200 mA - prevents destructive latchup under transient overvoltage or ground bounce. |
Pinout & Package
AT27C2048-15VI is supplied in a 40-lead Plastic Thin Small Outline Package (VSOP), 10 mm × 14 mm body, JEDEC MO-142 CA compliant. Pin 1 is marked by notch/dot; both GND pins (19 and 40) must be connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit address bus supporting full 128K-word addressing; A0 least significant. |
| O0–O15 | Data Outputs | True 16-bit parallel output bus; outputs float when CE or OE high. |
| CE | Chip Enable | Active-low primary chip select; controls power mode transition between active/standby. |
| OE | Output Enable | Active-low secondary enable; allows output gating without disabling internal logic. |
| PGM | Program Strobe | Active-low signal initiating 50 µs programming pulse; requires VPP = 13.0 V. |
| VPP | Programming Voltage | 13.0 V input for OTP cell injection; must be applied after VCC and removed before VCC. |
| VCC | Power Supply | 5V ±10% main supply; supplies core logic and outputs during read; 6.5 V used only during programming. |
| GND (Pins 19, 40) | Ground | Dual ground connections reduce noise coupling and improve signal integrity in high-speed reads. |
Key Features
| Feature | Design Value |
|---|---|
| Rapid™ Programming Algorithm | 50 µs/word typical programming time reduces firmware burn time by >90% vs. legacy EPROMs. |
| Integrated Product ID Code | Manufacturer ID (001Eh) and Device ID (00F7h) enable auto-detection and algorithm selection in production programmers. |
| Two-Line Control Logic | Independent CE and OE inputs allow precise output gating and bus sharing in multi-device systems. |
| JEDEC-Standard VSOP Package | 40-lead 10 mm × 14 mm VSOP footprint enables drop-in replacement of AT27C1024-15VI in space-constrained designs. |
| Industrial Temperature Range | –40°C to +85°C operation validated across full AC/DC specs - suitable for automotive ECUs and industrial controllers. |
Applications
| Industrial PLC Firmware Storage | Medical Device Boot ROM |
|---|---|
Use Scenario: Storing immutable boot firmware and safety-critical configuration in programmable logic controllers deployed in factory automation environments. IC Role / Device Role / Timing Role: OTP EPROM providing non-volatile, tamper-resistant program memory with guaranteed read stability over 10+ years. Use Value: Eliminates risk of accidental overwrite; 150 ns tACC supports deterministic boot timing in real-time control loops. |
Use Scenario: Holding certified bootloader and diagnostic routines in Class II medical instruments requiring regulatory traceability and revision control. IC Role / Device Role / Timing Role: One-time programmable memory ensuring firmware integrity and preventing unauthorized field updates. Use Value: Integrated ID code enables automated verification during manufacturing test; industrial temp rating validates operation in sterilization-cycle ambient swings. |
| Legacy Embedded System Upgrade | Avionics Data Lookup Table |
Use Scenario: Direct replacement for AT27C1024 in aging avionics and telecom infrastructure where PCB layout reuse is mandatory. IC Role / Device Role / Timing Role: Pin-compatible 128K×16 EPROM enabling capacity upgrade without board redesign. Use Value: Same 40-pin VSOP footprint and identical CE/OE timing margins ensure zero hardware changes. |
Use Scenario: Storing fixed calibration tables and sensor compensation coefficients in flight control units operating in extended temperature ranges. IC Role / Device Role / Timing Role: High-reliability OTP memory delivering deterministic read latency for closed-loop servo calculations. Use Value: 2,000V ESD and 200 mA latchup immunity meet DO-160 Section 22 surge requirements without external protection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar OTP EPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT27C2048-15PC | Same die, 40-lead PDIP package (600 mil width); higher profile and larger footprint than VSOP. | Suitable for through-hole prototyping or legacy board rework where socket compatibility is required. | Select when mechanical mounting or hand-soldering constraints favor DIP over surface-mount. |
| AT27C2048-15JI | Same die and VSOP package, but rated for industrial temp range with tighter AC timing bin (–40°C to +85°C, tACC = 150 ns). | Identical thermal and timing behavior to AT27C2048-15VI; differs only in ordering code suffix. | AT27C2048-15VI and AT27C2048-15JI are functionally identical; VI denotes VSOP, JI denotes PLCC - verify package code matches your BOM. |
Compared with AT27C2048-15PC (PDIP) and AT27C2048-15JI (PLCC), the AT27C2048-15VI offers the smallest PCB footprint and best thermal performance in surface-mount industrial systems, while maintaining full functional and timing equivalence across all three variants.
Availability
AT27C2048-15VI is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device boot ROM, legacy embedded system upgrades, and avionics data lookup table applications requiring stable component supply, long-term lifecycle support, and JEDEC-standard OTP EPROM compatibility.
Supply support for AT27C2048-15VI 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 for industrial, automotive, and consumer markets.
The AT27C2048 product line delivers high-reliability, one-time programmable EPROMs optimized for firmware storage in resource-constrained embedded systems where data integrity, long-term retention, and deterministic timing are critical.
FAQ
What is the maximum read access time specified for AT27C2048-15VI?
The AT27C2048-15VI has a maximum address-to-output delay (tACC) of 150 ns under industrial temperature conditions (–40°C to +85°C) and VCC = 5V ±10%. This value is guaranteed across the full operating range and defines the worst-case timing margin for synchronous bus interfacing. The "15" in the part number directly references this 150 ns speed grade.
Does AT27C2048-15VI require a separate programming voltage, and what is its value?
Yes, AT27C2048-15VI requires VPP = 13.0 V ±0.25 V during programming, applied to the VPP pin. This voltage is mandatory for oxide breakdown and charge trapping in the floating-gate cells. During normal read operation, VPP may be tied to VCC (5V), but must be isolated and elevated to 13.0 V only during programming pulses.
Can AT27C2048-15VI be used as a direct replacement for AT27C1024 in an existing design?
Yes, AT27C2048-15VI is explicitly designed as a direct upgrade from AT27C1024 (1M-bit) and AT27C516 (512K-bit) EPROMs. It shares identical pinout, voltage levels, timing interface, and control logic in VSOP-40 package - enabling capacity doubling without PCB or firmware changes.
What is the purpose of the PGM pin on AT27C2048-15VI, and how is it used?
The PGM pin on AT27C2048-15VI is the active-low Program Strobe input. It initiates the 50 µs programming pulse when driven low while CE is low and VPP = 13.0 V. Unlike EEPROMs, PGM does not control erase - the device is one-time programmable, and PGM enables only the write cycle to unprogrammed cells.
How does the Integrated Product Identification Code function in AT27C2048-15VI?
The AT27C2048-15VI contains a hard-wired Manufacturer ID (001Eh) and Device ID (00F7h) accessible via dedicated address sequence: A9 = 12.0 V, A0 toggled, all other Ai = low. This code allows automated programmers to validate device authenticity and select correct algorithms - a critical feature for high-volume manufacturing traceability.
AT27C2048-15VI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 40-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:
- 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:
- Surface Mount
- Supplier Device Package:
- 40-VSOP
AT27C2048-15VI FAQ
1.How can I place an order for AT27C2048-15VI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT27C2048-15VI 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 AT27C2048-15VI reliable?
The price and inventory of AT27C2048-15VI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT27C2048-15VI is usually 5 days.
3.What payment methods are accepted for AT27C2048-15VI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT27C2048-15VI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT27C2048-15VI?
AT27C2048-15VI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT27C2048-15VI 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 AT27C2048-15VI?
For technical support, including AT27C2048-15VI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT27C2048-15VI requirements.
6.How does Aetrix verify that AT27C2048-15VI is sourced from the original manufacturer or authorized distributors?
All AT27C2048-15VI 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 AT27C2048-15VI meets industry standards.
7.What is the process for return or replacement of AT27C2048-15VI?
All AT27C2048-15VI units undergo pre-shipment inspection (PSI). If there is an issue with AT27C2048-15VI, 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 AT27C2048-15VI part is unused and in its original packaging.
Return procedure for AT27C2048-15VI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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