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Microchip Technology AT28C17E-15PI
- Part No.:
- AT28C17E-15PI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 28-DIP (0.600", 15.24mm)
- Datasheet:
-
AT28C17E-15PI.pdf
- Description:
- IC EEPROM 16KBIT PARALLEL 28DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,161
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Product details
Overview
AT28C17E-15PI from Atmel is a 16K (2,048 × 8) parallel EEPROM with JEDEC-standard byte-wide pinout, 150 ns read access time, 200 µs fast byte write, and industrial temperature range (–40°C to +85°C). It operates on 5V ±10%, supports DATA POLLING and READY/BUSY signaling, and is used in firmware storage and configuration retention for embedded controllers.
For engineers reviewing the AT28C17E-15PI datasheet, AT28C17E-15PI pinout, AT28C17E-15PI application, or AT28C17E-15PI equivalent, key selection criteria include verified 100K-cycle endurance, CMOS/TTL compatibility, self-timed write with internal latching, and PDIP-28 packaging with VCC sense write protection.
Technical Context
The AT28C17E-15PI implements a nonvolatile 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 like a static RAM during reads and writes, enabling direct microprocessor interfacing without glue logic.
Write completion is signaled via open-drain RDY/BUSY (pin 1) or DATA POLLING on I/O7, and write inhibition is enforced by VCC sensing (<3.8V), 5 ms power-on delay, and triple-line enable logic (CE, OE, WE). Chip Clear and device identification use 12V on A9 or OE.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 16 Kbit (2,048 words × 8 bits): sufficient for boot code, calibration tables, or parameter storage in resource-constrained systems |
| Read Access Time | 150 ns max: enables direct connection to 6–8 MHz microcontrollers without wait states |
| Byte Write Time | 200 µs max (E-version): reduces full-memory rewrite to ≤0.4 s, critical for field-upgradable firmware |
| Endurance | 100,000 write/erase cycles: supports frequent configuration updates in industrial logging or calibration applications |
| Data Retention | 10 years at 85°C: ensures long-term reliability in unattended equipment without battery backup |
| Supply Voltage | 5V ±10%: compatible with legacy 5V logic families and mixed-voltage system rails |
| Standby Current | 100 µA typical: minimizes quiescent power in always-on embedded nodes |
Pinout & Package
AT28C17E-15PI is supplied in a 28-lead, 0.600" wide plastic dual in-line package (PDIP), per JEDEC MS-011 AB. Pin 1 is RDY/BUSY (open-drain); pins 12 and 25 are GND and VCC respectively; CE, OE, and WE provide three-level write enable control.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A10 | Address Inputs | 11-bit address bus for 2K-word addressing; TTL/CMOS compatible thresholds |
| I/O0–I/O7 | Bidirectional Data Bus | 8-bit parallel interface; supports DATA POLLING on I/O7 during write cycles |
| CE | Chip Enable | Active-low chip select; must be low for read/write; high disables outputs and enables standby mode |
| OE | Output Enable | Active-low output gate; controls data assertion on I/O lines during read operations |
| WE | Write Enable | Active-low write strobe; initiates self-timed byte write with internal latching of address and data |
| RDY/BUSY | Status Output | Open-drain signal pulled low during write; allows wired-OR of multiple devices on shared status line |
| GND / VCC | Power Terminals | Pins 12 and 25; decoupling capacitor required near VCC for stable write timing |
Key Features
| Feature | Design Value |
|---|---|
| Self-Timed Byte Write | Internal timer eliminates need for external write pulse generation or timing circuitry |
| VCC Sense Write Protection | Automatically inhibits writes if supply drops below ~3.8V, preventing corruption during brown-out |
| DATA POLLING & RDY/BUSY | Dual asynchronous write-complete detection methods support flexible host polling or interrupt-driven operation |
| Chip Clear Function | Single 10 ms WE pulse with OE = 12V clears entire memory array to FFh, enabling factory reset capability |
| User-Accessible ID Area | 32 bytes at 7E0H–7FFH allow serialization, calibration data, or firmware version tagging without consuming main array |
Applications
| Industrial PLC Configuration Storage | Medical Device Calibration Memory |
|---|---|
Use Scenario: Storing I/O mapping, PID tuning parameters, and alarm thresholds in programmable logic controllers deployed in factory automation. IC Role / Device Role / Timing Role: Nonvolatile configuration register accessed during boot and runtime via 8051 or ARM7 parallel bus. Use Value: 100K endurance and 10-year data retention ensure reliable operation across 15+ year equipment lifecycles without maintenance. | Use Scenario: Holding sensor offset/gain coefficients and regulatory compliance logs in portable diagnostic instruments with infrequent firmware updates. IC Role / Device Role / Timing Role: Parameter EEPROM interfaced to microcontroller's external memory bus with RDY/BUSY handshake for deterministic write timing. Use Value: 200 µs write time enables rapid recalibration during service mode without disrupting real-time measurement functions. |
| Telecom Line Card Bootloader Storage | Automotive Body Control Module Settings |
Use Scenario: Storing bootloader images and hardware revision identifiers on carrier-grade line cards requiring hot-swap compatibility and field upgrades. IC Role / Device Role / Timing Role: Parallel boot memory mapped into CPU address space; accessed during power-on initialization before DRAM initialization. Use Value: 150 ns read access meets tight timing budgets for ROM-based boot sequences on MIPS or PowerPC processors. | Use Scenario: Retaining user preferences (window position, mirror angle) and fault history in automotive BCMs operating across –40°C to +85°C ambient. IC Role / Device Role / Timing Role: Industrial-temp EEPROM directly connected to 8-bit MCU parallel port; powered from vehicle battery with VCC sense protection. Use Value: Guaranteed operation over full industrial temperature range and immunity to voltage transients ensure robustness in automotive electrical environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar parallel EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT28C256-15PI | 32K × 8 organization, same 150 ns access, 200 µs write, identical PDIP-28 pinout | Higher density for larger firmware images; requires address line A11 routing | Select when >16K storage is needed and board layout accommodates A11 |
| MX28F1000PC-15 | 1Mbit (128K × 8), 150 ns access, but requires 12V programming voltage and lacks DATA POLLING | Suitable for high-density boot ROM; incompatible with RDY/BUSY or polling-based hosts | Choose only if system already uses 12V programming infrastructure and does not rely on polling |
Compared with AT28C17E-15PI, AT28C256-15PI offers double capacity with pin-compatible footprint, while MX28F1000PC-15 trades ease of use for density and requires redesign of write-handling logic and voltage rails.
Availability
AT28C17E-15PI is available at Aetrix Electronics and suitable for industrial PLCs, medical diagnostics equipment, and telecom line cards requiring stable component supply, long-term lifecycle support, and guaranteed industrial temperature performance.
Supply support for AT28C17E-15PI 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 AT28C17E series was designed as a drop-in upgrade to EPROM and early EEPROM solutions, targeting cost-sensitive, 5V-based embedded systems needing field-updatable nonvolatile storage without complex support circuitry.
FAQ
What is the maximum write endurance specification for AT28C17E-15PI?
The AT28C17E-15PI is rated for 100,000 write/erase cycles - a 10× improvement over the standard AT28C17 (10,000 cycles). This endurance is validated under industrial temperature conditions and applies to all 2,048 memory locations. The AT28C17E-15PI achieves this through enhanced oxide quality and internal error correction, making it suitable for applications requiring frequent reconfiguration.
Does AT28C17E-15PI require external high-voltage circuitry for normal operation?
No, the AT28C17E-15PI operates fully from a single 5V ±10% supply during read and standard byte write operations. High voltage (12V) is required only for two special functions: Chip Clear (applied to OE) and accessing the 32-byte device ID area (applied to A9). These are infrequent, factory or service-mode operations - not part of routine firmware or configuration updates.
How does the RDY/BUSY pin on AT28C17E-15PI function during a write cycle?
The RDY/BUSY pin (pin 1) is an open-drain output that is actively pulled low for the entire duration of a byte write cycle - approximately 200 µs for the AT28C17E-15PI. It releases (goes high-impedance) upon completion, allowing external pull-up to assert logic high. Multiple AT28C17E-15PI devices can share one RDY/BUSY line via wired-OR, simplifying multi-chip status monitoring in dense memory subsystems.
Can AT28C17E-15PI be used as a direct replacement for AT28C17-15PI in existing designs?
Yes, the AT28C17E-15PI is a pin- and function-compatible enhancement of AT28C17-15PI, sharing identical PDIP-28 packaging, JEDEC pinout, timing specifications (150 ns read, 1 ms write max), and DC characteristics. The "E" suffix denotes higher endurance (100K vs. 10K cycles) and faster typical write time (200 µs), with no changes required to PCB layout, firmware, or support circuitry.
What is the purpose of the 32-byte device identification area in AT28C17E-15PI?
The AT28C17E-15PI includes 32 bytes of additional EEPROM space at addresses 7E0H–7FFH, accessible only when A9 is raised to 12V ±0.5V. This area is intended for permanent device-specific data such as serial numbers, manufacturing date codes, calibration constants, or firmware version stamps - isolated from main memory to prevent accidental overwrite during routine updates.
AT28C17E-15PI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 28-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:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 28-PDIP
AT28C17E-15PI FAQ
1.How can I place an order for AT28C17E-15PI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT28C17E-15PI 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 AT28C17E-15PI reliable?
The price and inventory of AT28C17E-15PI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT28C17E-15PI is usually 5 days.
3.What payment methods are accepted for AT28C17E-15PI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT28C17E-15PI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT28C17E-15PI?
AT28C17E-15PI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT28C17E-15PI 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 AT28C17E-15PI?
For technical support, including AT28C17E-15PI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT28C17E-15PI requirements.
6.How does Aetrix verify that AT28C17E-15PI is sourced from the original manufacturer or authorized distributors?
All AT28C17E-15PI 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 AT28C17E-15PI meets industry standards.
7.What is the process for return or replacement of AT28C17E-15PI?
All AT28C17E-15PI units undergo pre-shipment inspection (PSI). If there is an issue with AT28C17E-15PI, 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 AT28C17E-15PI part is unused and in its original packaging.
Return procedure for AT28C17E-15PI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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