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Microchip Technology AT28C16-15PC
- Part No.:
- AT28C16-15PC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 24-DIP (0.600", 15.24mm)
- Datasheet:
-
AT28C16-15PC.pdf
- Description:
- IC EEPROM 16KBIT PARALLEL 24DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,924
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Product details
Overview
AT28C16-15PC from Atmel is a 16K-bit (2,048 × 8) parallel EEPROM with JEDEC-standard byte-wide pinout, 150 ns read access time, 1 ms standard byte write cycle, 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 AT28C16-15PC datasheet, AT28C16-15PC pinout, AT28C16-15PC application, or AT28C16-15PC equivalent, key selection criteria include verified 150 ns read timing, self-timed byte write with DATA POLLING, 10⁴/10⁵ endurance rating, JEDEC-compliant PDIP-24 package, and VCC-sense write protection.
Technical Context
The AT28C16-15PC implements a parallel EEPROM architecture with internal address/data latching 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, supporting direct microprocessor bus interfacing without glue logic.
Write completion is signaled via DATA POLLING on I/O7, where the complement of written data appears until the internal clear-and-write sequence finishes. Chip Clear (12 V on OE) and Device Identification (12 V on A9, addresses 7E0H–7FFH) are supported through dedicated high-voltage programming modes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 16 Kbit (2,048 words × 8 bits); sufficient for small boot code or calibration tables in embedded systems |
| Read Access Time | 150 ns max; enables direct interface with 5–6 MHz microcontrollers without wait states |
| Byte Write Time | 1 ms typical (standard version); self-timed - frees CPU bus after latch, no external timing control needed |
| Endurance | 10,000 write/erase cycles (standard); validated for field-updatable configuration storage with moderate reprogramming frequency |
| Data Retention | 10 years at 25°C; ensures long-term reliability in unpowered storage of critical settings |
| Supply Voltage | 5 V ±10%; compatible with legacy 5 V logic families and industrial power rails |
| Standby Current | 100 µA (CMOS mode); supports low-power hold states in battery-backed or energy-sensitive designs |
Pinout & Package
AT28C16-15PC is packaged in a 24-lead, 0.600" wide plastic dual in-line package (PDIP-24), JEDEC MS-011 AA compliant, with through-hole mounting and commercial temperature rating (0°C to 70°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A10 | Address Inputs | 11-bit address bus; selects one of 2,048 memory locations (A10 = MSB) |
| I/O0–I/O7 | Bidirectional Data Bus | 8-bit parallel data path for read/write; high-impedance when CE or OE inactive |
| CE | Chip Enable | Active-low chip select; must be low for any memory access (read or write) |
| OE | Output Enable | Active-low output gate; controls data assertion on I/O lines during read only |
| WE | Write Enable | Active-low write strobe; initiates self-timed byte write when CE low and OE high |
| GND | Ground Reference | Signal and power return; pin 12 in PDIP-24 |
| VCC | Power Supply | +5 V supply; pin 24 in PDIP-24; includes internal VCC sense for write inhibition below 3.8 V |
Key Features
| Feature | Design Value |
|---|---|
| Self-Timed Byte Write | Internal timer automates erase-before-write; eliminates need for external write pulse timing or software delays |
| DATA POLLING on I/O7 | Enables real-time write completion detection without polling status registers or fixed timeouts |
| VCC Sense Write Protection | Hardware-level inhibition of writes when VCC drops below ~3.8 V, preventing corruption during brown-out |
| JEDEC Byte-Wide Pinout | Drop-in compatibility with industry-standard SRAM and EPROM sockets (e.g., 2716, 6116), easing legacy design migration |
| Chip Clear Function | Single 12 V pulse on OE (with CE low, WE low) erases entire array - simplifies factory initialization or recovery |
Applications
| Industrial PLC Configuration Storage | Legacy Microcontroller Bootloader Memory |
|---|---|
Use Scenario: Storing I/O mapping, scaling factors, and alarm thresholds in programmable logic controllers deployed in factory automation environments. IC Role / Device Role / Timing Role: Nonvolatile configuration memory accessed at power-up and during runtime parameter updates via 8-bit parallel bus. Use Value: 10-year data retention and 10⁴ endurance ensure reliable operation across extended maintenance intervals without recalibration. | Use Scenario: Holding bootloader firmware and hardware initialization routines for 8-bit microcontrollers (e.g., 8051, Z80) in cost-sensitive embedded devices. IC Role / Device Role / Timing Role: Parallel boot ROM replacement with in-system reprogrammability via standard bus cycles. Use Value: 150 ns read access allows zero-wait-state execution; JEDEC pinout enables socket reuse from obsolete EPROMs. |
| Medical Device Calibration Table Storage | Point-of-Sale Terminal Parameter Memory |
Use Scenario: Retaining sensor calibration coefficients and device-specific compensation values in portable diagnostic equipment requiring regulatory traceability. IC Role / Device Role / Timing Role: Secure, tamper-resistant nonvolatile memory with hardware write protection (VCC sense + CE/OE/WE gating). Use Value: Built-in write inhibit prevents accidental overwrites during power transitions - critical for FDA-compliant data integrity. | Use Scenario: Storing tax rate tables, language packs, and receipt formatting rules in retail terminals subject to frequent regional updates. IC Role / Device Role / Timing Role: Field-upgradable parameter store accessed via microcontroller's parallel memory interface during firmware update sequences. Use Value: Self-timed 1 ms byte writes allow background reprogramming without halting transaction processing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar parallel EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT28C16-15PI | Same core functionality but rated for industrial temperature (-40°C to +85°C); higher active current (45 mA vs. 30 mA) | Required for operation in extended ambient conditions (e.g., outdoor kiosks, motor drives) | Select AT28C16-15PI if board-level operating temperature exceeds 70°C; otherwise AT28C16-15PC suffices for commercial environments. |
| AT28C256-15PC | 64K-bit (32K × 8) capacity; same 150 ns access, 1 ms write, and PDIP-28 package; not pin-compatible | Used where larger configuration space is needed (e.g., multi-language UI assets, expanded calibration sets) | Choose AT28C256-15PC only if memory size requirement exceeds 16 Kbit; PCB redesign required due to 28-pin footprint. |
Compared with AT28C16-15PI and AT28C256-15PC, the AT28C16-15PC offers optimal cost and footprint for commercial-grade 16 Kbit parallel EEPROM needs - balancing speed, endurance, and proven JEDEC socket compatibility without over-specifying temperature or density.
Availability
AT28C16-15PC is available at Aetrix Electronics and suitable for industrial PLC configuration storage, legacy microcontroller bootloader memory, and medical device calibration table storage requiring stable component supply and long-term obsolescence management.
Supply support for AT28C16-15PC 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 (now part of Microchip Technology) is a semiconductor manufacturer specializing in microcontrollers, nonvolatile memory, and secure authentication ICs.
The AT28C16 product line delivers parallel EEPROMs optimized for direct microprocessor bus interfacing in legacy and cost-sensitive embedded systems requiring field-upgradable nonvolatile storage.
FAQ
What is the maximum read access time specified for the AT28C16-15PC?
The AT28C16-15PC has a maximum read access time of 150 ns, measured from address valid or CE/OE activation to valid data on I/O0–I/O7. This specification is guaranteed across the commercial temperature range (0°C to 70°C) and 5 V ±10% supply, enabling zero-wait-state operation with microcontrollers running up to ~6 MHz.
Does the AT28C16-15PC support in-system programming without high-voltage programmers?
Yes - the AT28C16-15PC supports standard 5 V in-system programming using only its native CE, OE, and WE control signals. High voltage (12 V) is required only for optional functions: Chip Clear (12 V on OE) and Device Identification memory access (12 V on A9). All normal byte writes occur at 5 V.
How does DATA POLLING work on the AT28C16-15PC during a write cycle?
During a byte write, reading the addressed location returns the complement of the written data on I/O7 (other I/O lines are indeterminate). When the internal write completes, true data appears on all outputs. This allows the host microcontroller to poll I/O7 in a loop to detect write completion without fixed delays or external status hardware - a key feature of the AT28C16-15PC.
What package type and pin count does the AT28C16-15PC use?
The AT28C16-15PC uses a 24-lead plastic dual in-line package (PDIP-24), per JEDEC MS-011 AA. It features a 0.600" body width, through-hole leads, and a standard JEDEC byte-wide pinout identical to that of the 2716 EPROM and 6116 SRAM - ensuring socket compatibility in legacy designs.
Is the AT28C16-15PC pin-compatible with the AT28C16-15PI?
Yes - the AT28C16-15PC and AT28C16-15PI share identical pinout, electrical interface, and timing specifications. The sole difference is operating temperature range: AT28C16-15PC is rated for 0°C to 70°C (commercial), while AT28C16-15PI extends to -40°C to +85°C (industrial). Both use the same PDIP-24 package.
AT28C16-15PC 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:
- 1ms
- 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
AT28C16-15PC FAQ
1.How can I place an order for AT28C16-15PC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT28C16-15PC 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 AT28C16-15PC reliable?
The price and inventory of AT28C16-15PC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT28C16-15PC is usually 5 days.
3.What payment methods are accepted for AT28C16-15PC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT28C16-15PC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT28C16-15PC?
AT28C16-15PC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT28C16-15PC 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 AT28C16-15PC?
For technical support, including AT28C16-15PC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT28C16-15PC requirements.
6.How does Aetrix verify that AT28C16-15PC is sourced from the original manufacturer or authorized distributors?
All AT28C16-15PC 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 AT28C16-15PC meets industry standards.
7.What is the process for return or replacement of AT28C16-15PC?
All AT28C16-15PC units undergo pre-shipment inspection (PSI). If there is an issue with AT28C16-15PC, 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 AT28C16-15PC part is unused and in its original packaging.
Return procedure for AT28C16-15PC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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