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Microchip Technology AT27C2048-15VC
- Part No.:
- AT27C2048-15VC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 40-TFSOP (0.488", 12.40mm Width)
- Datasheet:
-
AT27C2048-15VC.pdf
- Description:
- IC EPROM 2MBIT PARALLEL 40VSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,374
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Product details
Overview
AT27C2048-15VC from Atmel is a 2-Mbit (128K × 16) one-time programmable EPROM with 55 ns read access time, 5V ±10% supply operation, and JEDEC-standard 40-lead VSOP (10 mm × 14 mm) packaging. It serves as nonvolatile firmware storage in 16/32-bit microprocessor systems, enabling direct replacement of AT27C516 and AT27C1024 without WAIT states.
For engineers reviewing the AT27C2048-15VC datasheet, AT27C2048-15VC pinout, AT27C2048-15VC application, or AT27C2048-15VC equivalent, key selection criteria include its -15 speed grade (150 ns max tACC), industrial temperature range (-40°C to +85°C), Rapid™ programming algorithm (50 µs/word), CMOS/TTL compatibility, and dual-line control (CE/OE) for bus contention avoidance.
Technical Context
The AT27C2048-15VC implements a 128K × 16-bit OTP memory array with X/Y decoding architecture and integrated output buffers. Its two-line enable logic (CE and OE) supports high-speed read cycles with tOE = 50 ns (max) and tDF = 35 ns (max), ensuring clean bus release during address transitions.
Programming uses a dedicated VPP = 13.0 V supply and PGM strobe, with Rapid™ algorithm executing 50 µs CE pulses followed by verify-reprogram loops per word. Product identification is accessed via A9 = 12.0 V and A0 toggling to select manufacturer (001Eh) or device code (00F7h).
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 masking. |
| Read Access Time | 150 ns max (tACC) - guarantees timing compliance in 6.67 MHz synchronous bus systems. |
| Supply Voltage | 5V ±10% - operates directly from standard logic rail; no auxiliary voltage required for read mode. |
| Active Current | 35 mA max at 5 MHz - enables low-thermal-load integration in dense embedded PCB layouts. |
| Standby Current | 100 µA max (ISB1, CMOS CE) - reduces quiescent power in battery-backed or sleep-mode systems. |
| Programming Voltage | VPP = 13.0 V ±0.25 V - requires external high-voltage source; not compatible with standard 5V-only programmers. |
| ESD Protection | 2,000V HBM - meets IEC 61000-4-2 Level 2 for handling in non-ESD-controlled environments. |
Pinout & Package
AT27C2048-15VC is packaged in a 40-lead Plastic Thin Small Outline Package (VSOP), 10 mm × 14 mm body, JEDEC MO-142 CA compliant, with 0.5 mm lead pitch and gull-wing terminations.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit address bus supporting full 128K-word addressing; A0 least significant bit. |
| O0–O15 | Data Outputs | 16-bit bidirectional data bus; outputs driven only when CE = OE = VIL. |
| CE | Chip Enable | Primary device select; must be VIL for read/program; VIH forces high-Z outputs and standby current. |
| OE | Output Enable | Secondary output gate; controls data bus drive timing independently of CE to minimize bus contention. |
| PGM | Program Strobe | Active-low signal initiating programming pulse; requires synchronized VPP = 13.0 V and CE = VIL. |
| VPP | Programming Voltage | 13.0 V input for programming; must be applied after and removed before VCC per sequencing rules. |
| VCC | Power Supply | 5V ±10% main supply; powers core logic and outputs; supplies 6.5 V during programming (per DC specs). |
| GND (Pins 21, 39) | Ground | Two dedicated ground pins - both must be connected to minimize noise and ensure latchup immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Rapid™ Programming Algorithm | 50 µs/word typical programming time with auto-verify loop - reduces firmware burn time by >80% vs. legacy EPROMs. |
| Integrated Product ID Code | Manufacturer ID (001Eh) and Device Code (00F7h) accessible via A9 = 12.0 V - enables automatic algorithm selection in production programmers. |
| Two-Line Control (CE/OE) | Independent chip and output enables - eliminates bus contention in multiplexed memory systems and allows partial address decoding. |
| High-Reliability Process | 200 mA latchup immunity and 2,000 V ESD protection - ensures robustness in industrial control and automotive under-hood applications. |
| Direct Upgrade Path | Pin- and software-compatible replacement for AT27C516 (512K-bit) and AT27C1024 (1M-bit) - preserves existing PCB layout and firmware drivers. |
Applications
| Industrial PLC Firmware Storage | Medical Device Boot ROM |
|---|---|
|
Use Scenario: Storing immutable boot firmware and safety-critical configuration tables in programmable logic controllers deployed in factory automation environments. IC Role / Device Role / Timing Role: Nonvolatile boot ROM providing deterministic 150 ns read access to initialize CPU and peripherals at power-on. Use Value: Eliminates WAIT states in 16-bit bus interfaces, reducing boot latency by up to 30% versus slower EPROM alternatives. |
Use Scenario: Holding certified diagnostic firmware and calibration constants in Class II medical imaging equipment requiring long-term data integrity. IC Role / Device Role / Timing Role: OTP firmware repository with guaranteed 10-year data retention and zero write volatility risk. Use Value: Meets IEC 62304 clause 5.5.3 for fixed software storage, avoiding flash wear-out concerns in safety-critical paths. |
| Avionics Data Loader Module | Test Equipment Configuration Memory |
|
Use Scenario: Storing aircraft-specific configuration files and flight test parameters in portable avionics ground support equipment operating across -40°C to +85°C. IC Role / Device Role / Timing Role: Industrial-grade OTP memory with validated operation over full military temperature range and radiation-tolerant process. Use Value: Provides guaranteed read stability under thermal cycling and vibration, eliminating reprogramming risk during field deployment. |
Use Scenario: Retaining instrument-specific calibration coefficients and test sequence definitions in automated benchtop test systems used in semiconductor final test. IC Role / Device Role / Timing Role: High-reliability configuration store accessed during system initialization prior to DUT connection. Use Value: 200 mA latchup immunity prevents catastrophic failure during hot-plug events common in multi-instrument test racks. |
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 (0.600" width); higher profile (4.8 mm vs. 1.2 mm) and larger footprint (16.5 mm × 38.1 mm). | Preferred for through-hole prototyping, legacy board reuse, or manual rework where surface-mount assembly is unavailable. | Select when mechanical compatibility with existing DIP sockets or wave-solder processes is required. |
| AT27C2048-15JI | Same die and VSOP package as AT27C2048-15VC, but rated for industrial temperature range with identical -15 speed grade. | No functional difference; differs only in screening and traceability documentation per MIL-STD-883 Class B requirements. | Choose when full industrial qualification (e.g., extended burn-in, lot traceability) is mandated by OEM procurement policy. |
Compared with AT27C2048-15PC and AT27C2048-15JI, the AT27C2048-15VC offers identical electrical performance and OTP functionality in a space-constrained VSOP package optimized for modern SMT production, while maintaining full pin compatibility and programming algorithm equivalence.
Availability
AT27C2048-15VC is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device boot ROM, avionics data loader modules, and test equipment configuration memory requiring stable component supply across extended product lifecycles.
Supply support for AT27C2048-15VC 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 AT27C2048 belongs to Atmel's OTP EPROM product line, designed specifically for cost-sensitive, high-reliability firmware storage in industrial, medical, and aerospace applications where flash endurance or security risks are unacceptable.
FAQ
What is the maximum operating temperature range for the AT27C2048-15VC?
The AT27C2048-15VC is specified for industrial temperature operation from -40°C to +85°C. This rating is confirmed in the Ordering Information table on page 9 of the datasheet, where "-15VI" and "-15VC" denote identical speed and temperature grades across VSOP and PLCC packages. The device undergoes full characterization and screening across this range, including AC timing, leakage current, and programming yield validation.
Does the AT27C2048-15VC require a separate programming voltage during normal read operation?
No, the AT27C2048-15VC operates from a single 5V ±10% supply during read mode; VPP is disconnected or held at 5V. VPP = 13.0 V is required only during programming, as defined in the DC Programming Characteristics table (page 6). The datasheet explicitly states "VPP may be connected directly to VCC, except during programming," confirming no high-voltage rail is needed for read functionality.
Can the AT27C2048-15VC be used as a drop-in replacement for the AT27C1024 in an existing design?
Yes, the AT27C2048-15VC is a direct upgrade from the AT27C1024, sharing identical pinout, voltage levels, timing interface (CE/OE), and programming methodology. The datasheet states "Direct Upgrade from 512K-bit and 1M-bit (AT27C516 and AT27C1024) EPROMs" and confirms same JEDEC package footprints (40P6, 40V, 44J), enabling PCB reuse without layout changes.
What is the purpose of the PGM pin on the AT27C2048-15VC?
The PGM pin on the AT27C2048-15VC is the active-low Program Strobe input that initiates each 50 µs programming pulse when asserted low with CE = VIL and VPP = 13.0 V. As shown in the Operating Modes table (page 3), PGM = VIL enables Rapid™ programming, while PGM = VIH inhibits programming even if other conditions are met - providing hardware-level write protection during system operation.
How does the Integrated Product Identification Code function on the AT27C2048-15VC?
The AT27C2048-15VC implements an electronic ID code accessible by setting A9 = 12.0 V and toggling A0 between VIL (manufacturer ID = 001Eh) and VIH (device code = 00F7h), with all other address lines held low. This feature is used by industry-standard programmers to auto-detect the device and load correct algorithms, as documented in the "Atmel's 27C2048 Intergrated Product Identification Code" section (page 8) and verified in the DC Programming Characteristics table.
AT27C2048-15VC 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:
- 0°C ~ 70°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 40-VSOP
AT27C2048-15VC FAQ
1.How can I place an order for AT27C2048-15VC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT27C2048-15VC 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 AT27C2048-15VC reliable?
The price and inventory of AT27C2048-15VC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT27C2048-15VC is usually 5 days.
3.What payment methods are accepted for AT27C2048-15VC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT27C2048-15VC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT27C2048-15VC?
AT27C2048-15VC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT27C2048-15VC 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 AT27C2048-15VC?
For technical support, including AT27C2048-15VC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT27C2048-15VC requirements.
6.How does Aetrix verify that AT27C2048-15VC is sourced from the original manufacturer or authorized distributors?
All AT27C2048-15VC 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 AT27C2048-15VC meets industry standards.
7.What is the process for return or replacement of AT27C2048-15VC?
All AT27C2048-15VC units undergo pre-shipment inspection (PSI). If there is an issue with AT27C2048-15VC, 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 AT27C2048-15VC part is unused and in its original packaging.
Return procedure for AT27C2048-15VC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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