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Microchip Technology AT28C16E-15PC
- Part No.:
- AT28C16E-15PC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 24-DIP (0.600", 15.24mm)
- Datasheet:
-
AT28C16E-15PC.pdf
- Description:
- IC EEPROM 16KBIT PARALLEL 24DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,318
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Product details
Overview
AT28C16E-15PC from Atmel is a 16K-bit (2,048 × 8) parallel EEPROM with JEDEC-standard byte-wide pinout, 150 ns read access time, 200 µs fast byte write, and CMOS/TTL-compatible I/O. It operates at 5V ±10%, supports commercial temperature range (0°C to 70°C), and is used in microcontroller-based firmware storage and configuration memory applications.
For engineers reviewing the AT28C16E-15PC datasheet, AT28C16E-15PC pinout, AT28C16E-15PC application, or AT28C16E-15PC equivalent, key selection considerations include self-timed write cycle, DATA POLLING support, VCC-sense write protection, chip erase capability, and compatibility with standard SRAM bus interfaces.
Technical Context
The AT28C16E-15PC implements a parallel EEPROM architecture with internal address/data latches and an autonomous control timer for self-timed byte writes. It requires no external timing components and behaves electrically like a static RAM during reads and writes.
Its operation relies on dual-line chip enable (CE) and output enable (OE) control to prevent bus contention, and supports high-voltage (12V) operations for chip erase and device identification via A9 pin. Write inhibition is enforced by VCC sensing below 3.8V and power-on delay of 5 ms.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 16 Kbit (2,048 words × 8 bits); sufficient for boot code, calibration data, or small firmware images |
| Read Access Time | 150 ns max; enables direct interfacing with 5–6 MHz microcontrollers without wait states |
| Byte Write Time | 200 µs max (E-version); reduces full-memory rewrite to ~0.4 seconds vs. 1 ms in standard version |
| Endurance | 100,000 write/erase cycles; supports frequent field updates in industrial control systems |
| Data Retention | 10 years at 25°C; ensures long-term reliability in unpowered storage applications |
| Supply Voltage | 5V ±10%; compatible with legacy 5V logic families and mixed-voltage system backplanes |
| Standby Current | 100 µA typical (CMOS); enables low-power hold mode in battery-backed systems |
Pinout & Package
AT28C16E-15PC is supplied in a 24-lead, 0.600" wide plastic dual inline package (PDIP), per JEDEC MS-011 AA standard. Pin 1 is marked with a notch or dot; pins are numbered counter-clockwise from top-left corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A10 | Address Inputs | 11-bit address bus supporting full 2K-word addressing; TTL/CMOS compatible |
| I/O0–I/O7 | Bidirectional Data Bus | 8-bit parallel interface; high-impedance when CE or OE is high |
| CE | Chip Enable | Active-low chip select; must be low for read/write; enables standby current reduction |
| OE | Output Enable | Active-low output control; allows shared bus operation with other peripherals |
| WE | Write Enable | Active-low write strobe; initiates self-timed byte write with internal clear-and-write sequence |
| VCC | Power Supply | +5V ±10% supply; powers core logic and I/O buffers |
| GND | Ground | Reference return path for all signals and power |
Key Features
| Feature | Design Value |
|---|---|
| Self-timed byte write | Eliminates need for external write timing circuitry; frees microprocessor bus after address/data latch |
| DATA POLLING on I/O7 | Enables software-driven write completion detection without polling delay loops or hardware interrupts |
| VCC-sense write protection | Prevents inadvertent writes during power-up/down by disabling WE if VCC < 3.8V |
| Chip Erase via 12V on OE | Allows full-memory reset in 10 ms using standard high-voltage programming infrastructure |
| 32-byte ID area | Provides user-accessible nonvolatile space at addresses 7E0H–7FFH for serialization or calibration data |
Applications
| Industrial PLC Configuration Storage | Legacy Embedded System Firmware Backup |
|---|---|
Use Scenario: Storing runtime-configurable I/O mapping and PID tuning parameters in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile configuration memory accessed via 8051 or Z80-style parallel bus during initialization and parameter updates. Use Value: 100K endurance and 10-year retention ensure reliable operation across 15+ year equipment lifecycles without battery backup. | Use Scenario: Holding bootloader code and hardware revision data in medical diagnostic instruments with 5V-only power architecture. IC Role / Device Role / Timing Role: Parallel EEPROM replacing UV-erasable EPROM; directly mapped into microcontroller address space as lower memory. Use Value: 150 ns read access eliminates wait states on 6 MHz 80C51 derivatives, preserving real-time response. |
| Point-of-Sale Terminal Settings | Automotive Body Control Module Calibration |
Use Scenario: Saving tax rate tables, language packs, and operator IDs in retail terminals subject to frequent field updates. IC Role / Device Role / Timing Role: Field-updatable configuration store interfaced through discrete address/data latches and 74LS138 decoder. Use Value: 200 µs byte write enables sub-second parameter updates during service mode, improving technician throughput. | Use Scenario: Storing trim values for window lift motor current thresholds and mirror position offsets in 1990s-era BCMs. IC Role / Device Role / Timing Role: Automotive-grade (–40°C to +85°C) nonvolatile memory accessed during power-on self-test and runtime calibration. Use Value: VCC-sense and 5 ms power-on delay prevent corruption during vehicle battery transients and cold-cranking events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar parallel EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT28C16-15PC | 10K endurance, 1 ms write time | Suitable for infrequently updated configuration data | Select when cost sensitivity outweighs endurance or speed requirements |
| AT28C256-15PC | 32K × 8 organization, same 150 ns access, 200 µs write (E-version) | Higher density for larger firmware images; identical PDIP-24 footprint | Choose when future scalability or extended code storage is required without board redesign |
Compared with AT28C16-15PC and AT28C256-15PC, the AT28C16E-15PC delivers 10× higher endurance and 5× faster write time within the same 24-pin PDIP package-making it optimal for applications requiring frequent field updates while maintaining legacy board compatibility.
Availability
AT28C16E-15PC is available at Aetrix Electronics and suitable for industrial control systems, legacy embedded instrumentation, and automotive body electronics requiring stable component supply and long-term obsolescence management.
Supply support for AT28C16E-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 manufacturer specializing in microcontrollers, nonvolatile memory, and secure authentication ICs before its acquisition by Microchip Technology in 2016.
The AT28C16E-15PC belongs to Atmel's parallel EEPROM product line, designed specifically for drop-in replacement of EPROMs and SRAMs in 5V microprocessor systems requiring field-programmable nonvolatile storage.
FAQ
What is the maximum operating temperature range for the AT28C16E-15PC?
The AT28C16E-15PC is rated for commercial temperature operation from 0°C to +70°C. Its datasheet specifies this range explicitly for the "PC" suffix variant, and it does not support industrial (–40°C to +85°C) operation unless ordered as AT28C16E-15PI. The "PC" designation confirms the commercial-grade thermal specification for the AT28C16E-15PC.
Does the AT28C16E-15PC require external high-voltage circuitry for normal operation?
No, the AT28C16E-15PC operates fully at 5V for standard read and write functions. High voltage (12V ±0.5V) is only required for two optional operations: chip erase (applied to OE pin) and accessing the 32-byte device identification area (applied to A9 pin). These are infrequent maintenance functions-not part of routine AT28C16E-15PC operation.
How does DATA POLLING work on the AT28C16E-15PC during a write cycle?
During a write cycle, reading the addressed location returns the complement of the written data on I/O7 (other outputs are indeterminate). When the AT28C16E-15PC completes the internal clear-and-write sequence, true data appears on all outputs-including I/O7-signaling completion. This allows deterministic software polling without fixed delays or external status lines.
Can the AT28C16E-15PC be used as a direct replacement for the AT28C16-15PC on an existing PCB?
Yes-the AT28C16E-15PC shares identical pinout, timing specifications (150 ns read), voltage requirements, and package (PDIP-24) with the AT28C16-15PC. The only functional differences are improved endurance (100K vs. 10K cycles) and faster write time (200 µs vs. 1 ms), both of which are backward-compatible enhancements to the AT28C16E-15PC.
What is the purpose of the NC and DC pins listed in the AT28C16E-15PC pin configuration?
The AT28C16E-15PC has no NC (No Connect) or DC (Don't Connect) pins in its PDIP-24 package. Those designations appear only in the PLCC variant (32J). In the AT28C16E-15PC's 24P6 package, all 24 pins are functional-A0–A10, I/O0–I/O7, CE, OE, WE, VCC, and GND-with no unused or forbidden connections required for correct AT28C16E-15PC operation.
AT28C16E-15PC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 24-DIP (0.600", 15.24mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 16Kbit
- Memory Organization:
- 2K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 200µs
- 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:
- 24-PDIP
AT28C16E-15PC FAQ
1.How can I place an order for AT28C16E-15PC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT28C16E-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 AT28C16E-15PC reliable?
The price and inventory of AT28C16E-15PC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT28C16E-15PC is usually 5 days.
3.What payment methods are accepted for AT28C16E-15PC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT28C16E-15PC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT28C16E-15PC?
AT28C16E-15PC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT28C16E-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 AT28C16E-15PC?
For technical support, including AT28C16E-15PC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT28C16E-15PC requirements.
6.How does Aetrix verify that AT28C16E-15PC is sourced from the original manufacturer or authorized distributors?
All AT28C16E-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 AT28C16E-15PC meets industry standards.
7.What is the process for return or replacement of AT28C16E-15PC?
All AT28C16E-15PC units undergo pre-shipment inspection (PSI). If there is an issue with AT28C16E-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 AT28C16E-15PC part is unused and in its original packaging.
Return procedure for AT28C16E-15PC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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