My Inquiry
My Account
Microchip Technology AT28C16E-15PI
- Part No.:
- AT28C16E-15PI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 24-DIP (0.600", 15.24mm)
- Datasheet:
-
AT28C16E-15PI.pdf
- Description:
- IC EEPROM 16KBIT PARALLEL 24DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,434
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AT28C16E-15PI from Atmel is a 16 Kbit (2,048 × 8) parallel EEPROM with JEDEC-standard byte-wide pinout, 150 ns read access time, 200 µs fast byte write cycle, and industrial temperature range (–40°C to +85°C). It operates on 5V ±10%, supports DATA POLLING for write completion detection, and delivers 100 µA CMOS standby current - used in firmware storage and configuration retention for embedded controllers.
For engineers reviewing the AT28C16E-15PI datasheet, AT28C16E-15PI pinout, AT28C16E-15PI application, or AT28C16E-15PI equivalent, key selection criteria include verified 200 µs write timing, JEDEC-compliant 24-pin PDIP package compatibility, industrial-grade reliability (10⁵ endurance cycles, 10-year data retention), and direct microprocessor interface without external timing components.
Technical Context
The AT28C16E-15PI implements a self-timed byte write architecture with internal address/data latches and an automatic clear-before-write sequence. Its dual-line chip enable (CE) and output enable (OE) control enables bus contention avoidance in shared-memory systems.
It uses Atmel's nonvolatile CMOS process with built-in error correction for extended endurance and includes 32 bytes of dedicated identification memory accessible via A9 = 12 V. Write protection is enforced by VCC sense (<3.8 V inhibition), 5 ms power-on delay, and active-level gating of CE/OE/WE.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 16 Kbit (2,048 words × 8 bits) - supports full firmware image or parameter table storage in 8-bit microcontroller systems |
| Read Access Time | 150 ns - enables direct replacement of SRAM in legacy 5 MHz bus systems without wait-state insertion |
| Byte Write Time | 200 µs max - allows full device rewrite in ≤0.4 s, critical for field-upgradable calibration data |
| Endurance | 100,000 write/erase cycles - validated for daily reconfiguration in industrial HMI and PLC modules |
| Data Retention | 10 years at +85°C - ensures unpowered storage integrity across product lifecycle in automotive ECUs |
| Supply Voltage | 5V ±10% - compatible with standard TTL/CMOS logic rails and legacy 5 V power domains |
| Standby Current | 100 µA (CMOS) - reduces quiescent power in battery-backed real-time clock subsystems |
Pinout & Package
AT28C16E-15PI is supplied in a 24-lead, 0.600" wide plastic dual in-line package (PDIP), per JEDEC MS-011 AA. Pin 1 is marked with a notch or dot; pins 12 and 24 are GND and VCC respectively.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A10 | Address Inputs | 11-bit address bus supporting full 2K-word addressing; A0 least significant bit |
| I/O0–I/O7 | Bidirectional Data Bus | 8-bit parallel interface compatible with 8051, Z80, and 68K family data buses |
| CE | Chip Enable | Active-low global enable; must be low for read/write; high-Z outputs when high |
| OE | Output Enable | Active-low output gate; controls data assertion only during reads; independent of CE |
| WE | Write Enable | Active-low write strobe; initiates self-timed byte write on falling edge |
| GND | Ground Reference | Pins 12 and 24 are tied to system ground plane for noise immunity |
| VCC | Power Supply | Pin 24 supplies 5V ±10%; decoupling capacitor required within 1 cm |
Key Features
| Feature | Design Value |
|---|---|
| Self-Timed Byte Write | Eliminates need for external write timing circuitry; internal control timer manages erase-and-program sequence autonomously |
| DATA POLLING on I/O7 | Enables software-driven write completion detection without polling delay loops or hardware interrupts |
| JEDEC Byte-Wide Pinout | Ensures drop-in compatibility with industry-standard 27C256, 27C512, and 6264 SRAM footprints |
| VCC Sense Write Inhibit | Prevents corruption during brown-out by disabling writes below 3.8 V, verified across industrial voltage transients |
| Dedicated ID Memory | 32 bytes at 7E0H–7FFH accessible via 12 V on A9 - used for board revision tracking and calibration checksum storage |
Applications
| Industrial PLC Configuration Storage | Automotive ECU Calibration Data |
|---|---|
Use Scenario: Storing user-defined I/O mapping and ladder logic parameters in programmable logic controllers with no backup battery. IC Role / Device Role / Timing Role: Nonvolatile configuration register bank accessed via 8-bit parallel bus during boot and runtime updates. Use Value: 100,000-cycle endurance supports weekly field recalibration; 10-year retention guarantees data survival across 15-year equipment lifespans. | Use Scenario: Holding trim values and sensor compensation coefficients in engine control units exposed to under-hood thermal cycling. IC Role / Device Role / Timing Role: Standalone calibration memory mapped into microcontroller address space; written once per service interval. Use Value: Industrial temperature rating (–40°C to +85°C) and 150 ns read speed ensure deterministic startup timing even after thermal shock. |
| Legacy Instrumentation Firmware Backup | Point-of-Sale Terminal Parameter Tables |
Use Scenario: Maintaining bootloader and diagnostic firmware images in benchtop test equipment where flash update risk is unacceptable. IC Role / Device Role / Timing Role: Parallel-boot ROM replacement with in-system reprogrammability via microcontroller GPIO. Use Value: 200 µs write time enables full 16 Kbit firmware patching in <500 ms - faster than serial EEPROM alternatives. | Use Scenario: Storing tax rate tables, language packs, and receipt format templates in retail terminals with frequent regional updates. IC Role / Device Role / Timing Role: Field-upgradable parameter store accessed over ISA-like parallel bus during initialization. Use Value: JEDEC pinout allows reuse of existing PCB layout; 5V operation eliminates level-shifter requirements in legacy 5 V designs. |
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 | 32× larger capacity (32 K × 8), same 150 ns access, 200 µs write, identical PDIP-24 package and pinout | Supports larger firmware images; requires no PCB change but needs updated address decoding logic | Select when future-proofing for >16 Kbit storage or consolidating multiple EEPROMs |
| ST M28W640ECB90N1T | 64 Kbit, 90 ns access, 5 V-only supply, different pinout (28-pin SOIC), no DATA POLLING support | Requires PCB redesign; lacks software-controlled write completion signaling - mandates fixed timing delays | Choose only if higher speed and density outweigh migration effort and loss of polling flexibility |
Compared with AT28C256-15PI, the AT28C16E-15PI offers optimal cost and footprint for sub-16 Kbit use cases; versus ST M28W640ECB90N1T, it provides proven polling-based write management and drop-in PDIP compatibility for legacy 8-bit systems.
Availability
AT28C16E-15PI is available at Aetrix Electronics and suitable for industrial PLC configuration storage, automotive ECU calibration data retention, and legacy instrumentation firmware backup requiring stable component supply across long production lifecycles.
Supply support for AT28C16E-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 fabless semiconductor company specializing in microcontrollers, nonvolatile memory, and secure authentication ICs.
The AT28C16E-15PI belongs to Atmel's parallel EEPROM product line, designed specifically for reliable, pin-compatible replacement of EPROM and SRAM in legacy 8-bit embedded systems requiring in-system reprogrammability.
FAQ
What is the maximum write cycle time for AT28C16E-15PI?
The AT28C16E-15PI has a guaranteed maximum byte write cycle time of 200 µs, enabled by its high-endurance "E" variant design. This is significantly faster than the standard AT28C16-15PI (1 ms), making the AT28C16E-15PI suitable for applications requiring rapid field updates. The internal control timer handles the entire clear-and-write sequence automatically once WE is asserted.
Does AT28C16E-15PI support DATA POLLING, and how is it implemented?
Yes, AT28C16E-15PI supports DATA POLLING on I/O7 to signal write completion. During a write, reading the target address returns the complement of the written data on I/O7 (other bits are indeterminate); when the write finishes, true data appears on all outputs. This allows host firmware to poll I/O7 without fixed delays or external hardware, a feature confirmed in the AC characteristics table and device operation section of the datasheet.
What is the operating temperature range for AT28C16E-15PI?
The AT28C16E-15PI is rated for industrial temperature operation from –40°C to +85°C, as specified in the DC and AC Operating Range table. This range is validated for both electrical performance and data retention, distinguishing it from commercial-grade variants (0°C to +70°C). The "I" suffix in the part number explicitly denotes this industrial qualification.
Can AT28C16E-15PI be used as a direct replacement for AT28C16-15PI on the same PCB?
Yes, AT28C16E-15PI is a pin- and function-compatible upgrade to AT28C16-15PI in the same PDIP-24 package. Both share identical pinout, voltage requirements, timing interfaces, and command protocols. The only functional difference is the reduced 200 µs write time and increased 10⁵ endurance of the "E" version - no PCB or firmware changes are needed to deploy AT28C16E-15PI.
How does write protection work on AT28C16E-15PI?
AT28C16E-15PI implements three-tiered write protection: (1) VCC sense disables writes below ~3.8 V; (2) a 5 ms power-on delay prevents writes until supply stabilizes; and (3) hardware gating requires simultaneous CE low, OE high, and WE low - any deviation inhibits writing. These mechanisms are documented in the Device Operation section and prevent accidental corruption during power transitions or software errors.
AT28C16E-15PI 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:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 24-PDIP
AT28C16E-15PI FAQ
1.How can I place an order for AT28C16E-15PI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT28C16E-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 AT28C16E-15PI reliable?
The price and inventory of AT28C16E-15PI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT28C16E-15PI is usually 5 days.
3.What payment methods are accepted for AT28C16E-15PI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT28C16E-15PI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT28C16E-15PI?
AT28C16E-15PI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT28C16E-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 AT28C16E-15PI?
For technical support, including AT28C16E-15PI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT28C16E-15PI requirements.
6.How does Aetrix verify that AT28C16E-15PI is sourced from the original manufacturer or authorized distributors?
All AT28C16E-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 AT28C16E-15PI meets industry standards.
7.What is the process for return or replacement of AT28C16E-15PI?
All AT28C16E-15PI units undergo pre-shipment inspection (PSI). If there is an issue with AT28C16E-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 AT28C16E-15PI part is unused and in its original packaging.
Return procedure for AT28C16E-15PI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT28C16E-15PI 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…
