My Inquiry
My Account
Microchip Technology AT27C2048-15PC
- Part No.:
- AT27C2048-15PC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 40-DIP (0.600", 15.24mm)
- Datasheet:
-
AT27C2048-15PC.pdf
- Description:
- IC EPROM 2MBIT PARALLEL 40DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,615
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AT27C2048-15PC 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 PDIP package. It delivers TTL/CMOS-compatible I/O, rapid 50 µs/word programming, and supports high-performance 16/32-bit microprocessor systems requiring nonvolatile firmware storage without wait states.
For engineers reviewing the AT27C2048-15PC datasheet, AT27C2048-15PC pinout, AT27C2048-15PC application, or AT27C2048-15PC equivalent, key selection criteria include read timing (tACC = 150 ns), standby current (≤100 µA), VPP programming voltage (12.0 V), dual-line control (CE/OE), and OTP reliability for embedded boot code storage.
Technical Context
The AT27C2048-15PC implements a 128K × 16-bit 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, while integrated product identification uses A9 and A0 to select manufacturer/device codes.
Programming employs Atmel's Rapid™ algorithm: 50 µs CE pulses at VCC = 6.5 V and VPP = 13.0 V, with verify-reprogram loops per word. System-level design requires 0.1 µF ceramic decoupling between VCC and GND, plus bulk 4.7 µF capacitance for EPROM arrays.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2,097,152 bits (128K words × 16 bits) - enables full firmware image storage for 16-bit MCUs without external data bus expansion |
| Read Access Time | 150 ns max (tACC) - ensures compatibility with 6–7 MHz bus clocks without WAIT state insertion |
| VCC Supply | 5V ±10% - operates directly from standard logic rail; no auxiliary voltage required for read mode |
| Standby Current | 100 µA max (ISB1) - supports low-power hold modes in battery-backed or energy-constrained systems |
| Programming Voltage | VPP = 12.0 ±0.5 V - requires dedicated programming supply; not compatible with 5V-only programmers |
| ESD Protection | 2,000V HBM - meets industrial handling requirements without additional protection circuitry |
| Latchup Immunity | 200 mA - withstands transient overcurrent events on I/O or power pins |
Pinout & Package
AT27C2048-15PC is supplied in a 40-lead, 0.600" wide plastic dual-inline package (PDIP), JEDEC MS-011 AC compliant. Package dimensions: 0.630" × 0.220" × 0.180" (16.0 mm × 5.59 mm × 4.57 mm).
| 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 | 16-bit bidirectional data bus; outputs driven only when CE = VIL and OE = VIL |
| CE | Chip Enable | Primary device select; must be low for read or program; controls power state transition |
| OE | Output Enable | Secondary output gate; allows bus sharing without disabling chip; high-Z when VIH |
| PGM | Program Strobe | Active-low signal initiating programming pulse; requires precise 47.5–52.5 µs width |
| VPP | Programming Voltage | 12.0 V input during programming; must be applied after and removed before VCC |
| VCC | Power Supply | +5V supply; powers logic and outputs; 35 mA max active current at 5 MHz |
| GND (Pins 12 & 39) | Ground | Two dedicated ground pins; both must be connected to minimize noise and ensure latchup immunity |
Key Features
| Feature | Design Value |
|---|---|
| Rapid™ Programming | 50 µs/word typical - reduces firmware update time by >90% vs. legacy EPROM algorithms |
| Integrated ID Code | Manufacturer ID (001Eh) and Device ID (00F7h) accessible via A9/A0 - enables auto-detection in universal programmers |
| Two-Line Control | Independent CE and OE inputs - permits interleaved memory access and clean bus release without glitches |
| OTP Reliability | 2,000V ESD / 200 mA latchup rating - qualifies for industrial control and telecom equipment environments |
| Direct Upgrade Path | Pin- and software-compatible with AT27C516 (512K) and AT27C1024 (1M) - simplifies memory capacity migration |
Applications
| Industrial PLC Firmware Storage | Legacy Embedded Boot ROM |
|---|---|
|
Use Scenario: Storing fixed ladder logic and I/O configuration in programmable logic controllers operating at -40°C to +85°C. IC Role / Device Role / Timing Role: Nonvolatile boot memory providing immediate instruction fetch on power-up; accessed via 16-bit parallel bus. Use Value: 150 ns tACC ensures deterministic startup within 200 µs; OTP prevents accidental overwrite during field maintenance. |
Use Scenario: Replacing obsolete UV-erasable EPROMs in medical diagnostic instruments with fixed calibration tables. IC Role / Device Role / Timing Role: Read-only firmware repository mapped to CPU address space; CE/OE coordinated with bus controller. Use Value: 5V-only read operation eliminates level-shifting; 100 µA standby current extends battery backup duration. |
| Telecom Line Card Bootloader | Avionics Display Controller ROM |
|
Use Scenario: Holding bootloader code for DSP-based T1/E1 interface cards in central office switching systems. IC Role / Device Role / Timing Role: Primary boot memory accessed during cold start; programmed once at manufacturing. Use Value: Rapid™ programming enables high-throughput production programming; 2,000V ESD protects against board handling damage. |
Use Scenario: Storing display initialization routines and font glyphs in cockpit multifunction displays certified to DO-254. IC Role / Device Role / Timing Role: Static memory mapped to microcontroller's external bus; no runtime writes permitted. Use Value: JEDEC-standard PDIP package supports manual rework and long-term component availability; OTP guarantees configuration integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar OTP EPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT27C020-15PC | 2-Mbit (256K × 8) organization; single-byte data bus; identical 150 ns tACC and PDIP package | Requires 8-bit bus interface; incompatible with 16-bit microprocessors without glue logic | Select when system uses 8-bit data path or needs byte-level addressing granularity |
| AM27C2048-15DC | Functionally identical 128K × 16 OTP EPROM; same AC/DC specs; offered in 44-pin PLCC (not PDIP) | Surface-mount PLCC package; incompatible footprint; requires PCB redesign | Select for new designs targeting surface-mount assembly or higher I/O density |
Compared with AT27C2048-15PC, AT27C020-15PC trades 16-bit parallelism for 8-bit simplicity and lower pin count, while AM27C2048-15DC offers identical functionality in a different package-neither is pin-compatible, but both serve overlapping firmware storage roles where bus width or mounting method differs.
Availability
AT27C2048-15PC is available at Aetrix Electronics and suitable for industrial control systems, legacy embedded instrumentation, and telecom infrastructure requiring stable component supply and long-lifecycle support.
Supply support for AT27C2048-15PC 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, nonvolatile memory, and analog products before its acquisition by Microchip Technology in 2016.
The AT27C2048-15PC belongs to Atmel's OTP EPROM family designed for reliable, one-time firmware storage in industrial, telecom, and aerospace applications where UV-erasable devices were impractical.
FAQ
What is the maximum operating temperature range for the AT27C2048-15PC?
The AT27C2048-15PC is rated for industrial temperature operation from -40°C to +85°C. This specification is confirmed in the Ordering Information table and DC Operating Conditions section of the datasheet. The "-15" speed grade and "-PC" suffix denote the 150 ns access time and 40-lead PDIP package, both validated across this full industrial range. AT27C2048-15PC maintains all specified timing and current parameters within these limits.
Does the AT27C2048-15PC require a separate programming voltage during normal read operation?
No, the AT27C2048-15PC operates from a single 5V ±10% supply (VCC) during read mode. VPP is only required during programming and must be disconnected or held at VCC level during read. The datasheet explicitly states "VPP may be connected directly to VCC, except during programming." Therefore, AT27C2048-15PC functions as a true 5V-only device in system operation, simplifying power design.
Can the AT27C2048-15PC be used as a direct replacement for the AT27C1024 in an existing design?
Yes, the AT27C2048-15PC is a direct upgrade from the AT27C1024 (1M-bit) EPROM, as stated in the Features section. Both share identical pinouts, 40-lead PDIP packaging, 5V operation, and CE/OE control logic. The AT27C2048-15PC extends address range to A16 and doubles storage to 128K × 16, maintaining full backward compatibility for designs where unused upper address lines are tied low or ignored.
What decoupling capacitors are required for stable operation of the AT27C2048-15PC?
The AT27C2048-15PC requires a 0.1 µF ceramic capacitor placed between VCC and GND, mounted as close to the device as possible. For systems with multiple EPROMs, a 4.7 µF bulk electrolytic capacitor is also recommended at the array's power entry point. These values are specified in the "System Considerations" section to suppress transients caused by CE switching and stabilize VCC under dynamic load-critical for reliable AT27C2048-15PC operation.
How is the product identification code accessed on the AT27C2048-15PC?
The AT27C2048-15PC provides two identification words via its O0–O15 outputs when A9 is driven to 12.0 V and A0 is toggled: A0 = VIL selects the Manufacturer ID (001Eh), and A0 = VIH selects the Device ID (00F7h). All other address lines A1–A16 must be held low. This feature is electrically verified and used by industry-standard programmers to auto-configure programming algorithms-ensuring correct handling of AT27C2048-15PC during production.
AT27C2048-15PC 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:
- 0°C ~ 70°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 40-PDIP
AT27C2048-15PC FAQ
1.How can I place an order for AT27C2048-15PC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT27C2048-15PC 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 AT27C2048-15PC reliable?
The price and inventory of AT27C2048-15PC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT27C2048-15PC is usually 5 days.
3.What payment methods are accepted for AT27C2048-15PC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT27C2048-15PC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT27C2048-15PC?
AT27C2048-15PC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT27C2048-15PC 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 AT27C2048-15PC?
For technical support, including AT27C2048-15PC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT27C2048-15PC requirements.
6.How does Aetrix verify that AT27C2048-15PC is sourced from the original manufacturer or authorized distributors?
All AT27C2048-15PC 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 AT27C2048-15PC meets industry standards.
7.What is the process for return or replacement of AT27C2048-15PC?
All AT27C2048-15PC units undergo pre-shipment inspection (PSI). If there is an issue with AT27C2048-15PC, 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 AT27C2048-15PC part is unused and in its original packaging.
Return procedure for AT27C2048-15PC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT27C2048-15PC Tags
-
M24C02-WMN6TP
STMicroelectronics
-
AT24C02C-XHM-T
Microchip Technology
-
AT21CS01-STUM10-T
Microchip Technology
-
AT24C02C-SSHM-T
Microchip Technology
-
24LC01BT-I/OT
Microchip Technology
-
M24C02-FMC6TG
STMicroelectronics
-
AT24CS02-SSHM-T
Microchip Technology
-
93LC46BT-I/OT
Microchip Technology
-
AT24C04C-SSHM-T
Microchip Technology
-
24LC01BT-I/SN
Microchip Technology
-
24AA02UIDT-I/OT
Microchip Technology
-
AT24C08C-STUM-T
Microchip Technology
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
