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Microchip Technology AT28C17-15PC
- Part No.:
- AT28C17-15PC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 28-DIP (0.600", 15.24mm)
- Datasheet:
-
AT28C17-15PC.pdf
- Description:
- IC EEPROM 16KBIT PARALLEL 28DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,519
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Product details
Overview
AT28C17-15PC from Atmel is a 16K (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 delivers 30 mA active current with 100 µA standby current - used in firmware storage and configuration retention for embedded controllers.
For engineers reviewing the AT28C17-15PC datasheet, AT28C17-15PC pinout, AT28C17-15PC application, or AT28C17-15PC equivalent, key selection considerations include self-timed write capability, RDY/BUSY open-drain signaling, DATA POLLING support, and JEDEC-compliant PDIP-28 packaging for legacy board compatibility.
Technical Context
The AT28C17-15PC implements a parallel EEPROM architecture with internal address/data latches and an autonomous control timer enabling self-timed byte writes without external timing circuitry. Its dual write-detection methods - RDY/BUSY output and I/O7 data polling - provide flexible host synchronization during programming.
It features VCC-sense write protection, 5 ms power-on delay before write enable, and chip erase via 12 V on OE. The device includes 32 bytes of dedicated identification memory (7E0H–7FFH) accessible with A9 = 12 V, and uses Atmel's nonvolatile CMOS process for 10⁴ endurance cycles and 10-year data retention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 16 Kbit (2,048 words × 8 bits) - sufficient for boot code or calibration tables in microcontroller-based systems |
| Read Access Time | 150 ns - enables direct interface with 6–8 MHz Z80, 8051, or 68K-family processors without wait states |
| Byte Write Time | 1 ms (standard) - deterministic duration allows predictable firmware update scheduling |
| Supply Voltage | 5 V ±10% - compatible with legacy 5 V logic rails and eliminates need for level-shifting |
| Standby Current | 100 µA - supports low-power operation in battery-backed or energy-constrained applications |
| Endurance | 10,000 write/erase cycles - validated for field-updatable configuration storage over product lifetime |
| Operating Temp | 0°C to 70°C - qualified for commercial-grade industrial control panels and office equipment |
Pinout & Package
AT28C17-15PC is packaged in a 28-lead, 0.600" wide plastic DIP (PDIP-28), 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 full parallel bus control.
| 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; supports true read/write without direction control pin |
| CE | Chip Enable | Active-low chip select; required low with OE low and WE high for read access |
| OE | Output Enable | Active-low output gate; controls data bus tristate independently of CE |
| WE | Write Enable | Active-low write strobe; initiates self-timed byte write when CE is low and OE is high |
| RDY/BUSY | Open-Drain Status Output | Pulled low during write; released high at completion - supports wired-OR multi-device status lines |
| GND / VCC | Power Terminals | Pin 12 (GND), Pin 25 (VCC); decoupling capacitor placement critical for stable 150 ns read timing |
Key Features
| Feature | Design Value |
|---|---|
| Self-Timed Byte Write | Eliminates external timing components; internal control timer manages clear-before-write and auto-termination |
| DATA POLLING Support | I/O7 toggles complemented data during write, then returns true value - enables polling without dedicated status hardware |
| JEDEC-Compliant Pinout | Direct drop-in replacement for industry-standard 2716/2732 EPROMs in existing sockets and PCB layouts |
| VCC Sense Write Protection | Blocks writes if VCC < 3.8 V (typical), preventing corruption during brown-out or power ramp conditions |
| Dedicated ID Memory | 32 bytes at 7E0H–7FFH accessible via 12 V on A9 - enables unique device serialization or revision tracking |
Applications
| Industrial PLC Configuration Storage | Legacy Microcontroller Bootloader Memory |
|---|---|
|
Use Scenario: Storing I/O mapping, PID tuning parameters, and alarm thresholds in programmable logic controllers with no external NVRAM controller. IC Role / Device Role / Timing Role: Nonvolatile configuration register bank accessed via 8-bit parallel bus during system initialization and runtime parameter updates. Use Value: 150 ns read speed ensures fast startup; 1 ms write time aligns with human-operated configuration changes; 10⁴ endurance exceeds typical field maintenance cycles. |
Use Scenario: Holding bootloader firmware and secure boot keys in Z80- or 8051-based instrumentation where flash reprogramming is unavailable. IC Role / Device Role / Timing Role: Parallel-programmable ROM replacement providing in-system update capability without UV erasure or socket removal. Use Value: JEDEC pinout allows reuse of existing EPROM footprints; RDY/BUSY signal enables deterministic firmware patching without CPU polling overhead. |
| Point-of-Sale Terminal Settings Retention | Medical Device Calibration Data Storage |
|
Use Scenario: Preserving tax rate tables, language packs, and receipt formatting rules across power cycles in retail terminals with frequent software updates. IC Role / Device Role / Timing Role: Field-updatable configuration store interfaced directly to microprocessor data/address buses using standard memory-mapped I/O. Use Value: 100 µA standby current extends battery backup life; DATA POLLING avoids dedicated interrupt lines; 5 V operation matches legacy terminal power architecture. |
Use Scenario: Archiving sensor calibration coefficients and usage logs in Class II medical devices requiring long-term data integrity and regulatory traceability. IC Role / Device Role / Timing Role: Tamper-resistant nonvolatile memory for safety-critical parameters, accessed only during factory calibration or service mode. Use Value: 10-year data retention meets FDA 21 CFR Part 11 requirements; chip erase via 12 V on OE enables secure data sanitization before device decommissioning. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar parallel EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT28C256-15PC | 32K × 8 capacity, same 150 ns access, identical PDIP-28 pinout and timing | Supports larger firmware images; requires no layout change but may increase cost and power in size-constrained designs | Select when >16 KB configuration space is needed; retains full software and hardware compatibility |
| MX28LV160CBTI-15G | 16K × 8, 150 ns access, but uses 3.3 V core with 5 V tolerant I/O; different write protection scheme | Requires level translation for pure 5 V systems; lacks RDY/BUSY pin - relies solely on polling | Choose only for mixed-voltage designs where 3.3 V supply is available; verify polling-only timing margins |
Compared with AT28C256-15PC and MX28LV160CBTI-15G, the AT28C17-15PC offers optimal balance of proven 5 V compatibility, integrated RDY/BUSY signaling, and minimal footprint for legacy-replacement use cases - avoiding unnecessary capacity or voltage conversion complexity.
Availability
AT28C17-15PC is available at Aetrix Electronics and suitable for industrial PLCs, legacy microcontroller bootloaders, and point-of-sale terminal configuration storage requiring stable component supply and long-term obsolescence management.
Supply support for AT28C17-15PC 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, designed high-reliability nonvolatile memory and microcontrollers for industrial, automotive, and consumer applications before its 2016 acquisition.
The AT28C17-15PC belongs to Atmel's parallel EEPROM product line, engineered specifically for pin-compatible replacement of UV-erasable EPROMs in systems where in-system electrical reprogrammability and 5 V operation are mandatory.
FAQ
What is the maximum operating frequency supported by the AT28C17-15PC?
The AT28C17-15PC does not operate at a clock frequency - it is a parallel asynchronous EEPROM. Its 150 ns read access time corresponds to a maximum effective interface speed of approximately 6.7 MHz when used with microprocessors having zero-wait-state timing. The device responds to address and control signals (CE, OE, WE) without an external clock, making it compatible with Z80, 8051, and 68000-family CPUs.
Does the AT28C17-15PC require a 12 V supply for normal operation?
No, the AT28C17-15PC operates from a single 5 V ±10% supply for all standard read and write functions. A 12 V supply is required only for two special operations: chip erase (applied to OE pin) and accessing the 32-byte device identification memory (applied to A9 pin). These are infrequent, factory-level procedures - not part of routine operation.
How does the RDY/BUSY pin function during a write cycle in the AT28C17-15PC?
In the AT28C17-15PC, the RDY/BUSY pin (Pin 1) is an open-drain output that is actively pulled low at the start of each byte write cycle and remains low until the internal self-timed write completes. Upon completion, the pin is released (high-impedance), allowing an external pull-up to drive it high. This enables hardware handshaking or wired-OR connection of multiple AT28C17-15PC devices to a shared status line.
Can the AT28C17-15PC be used as a direct replacement for a 2716 EPROM?
Yes, the AT28C17-15PC uses a JEDEC-approved byte-wide pinout identical to the 2716 EPROM (2K × 8), including matching A0–A10, I/O0–I/O7, CE, OE, and VCC/GND locations. Unlike the 2716, it requires no UV eraser and supports in-system electrical writes - but retains full read-cycle compatibility, making it a functional and physical drop-in upgrade for legacy designs.
What is the endurance rating of the AT28C17-15PC, and how is it verified?
The AT28C17-15PC is rated for 10,000 write/erase cycles per memory location, as specified in its datasheet (Rev. 0541B–10/98) and validated through accelerated life testing per JEDEC standards. This endurance applies to standard operation (1 ms write cycle); the "E" variant (AT28C17E) offers 100,000 cycles. Endurance is guaranteed across the full commercial temperature range (0°C to 70°C).
AT28C17-15PC 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:
- 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:
- 28-PDIP
AT28C17-15PC FAQ
1.How can I place an order for AT28C17-15PC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT28C17-15PC 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 AT28C17-15PC reliable?
The price and inventory of AT28C17-15PC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT28C17-15PC is usually 5 days.
3.What payment methods are accepted for AT28C17-15PC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT28C17-15PC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT28C17-15PC?
AT28C17-15PC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT28C17-15PC 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 AT28C17-15PC?
For technical support, including AT28C17-15PC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT28C17-15PC requirements.
6.How does Aetrix verify that AT28C17-15PC is sourced from the original manufacturer or authorized distributors?
All AT28C17-15PC 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 AT28C17-15PC meets industry standards.
7.What is the process for return or replacement of AT28C17-15PC?
All AT28C17-15PC units undergo pre-shipment inspection (PSI). If there is an issue with AT28C17-15PC, 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 AT28C17-15PC part is unused and in its original packaging.
Return procedure for AT28C17-15PC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT28C17-15PC Tags
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