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Microchip Technology AT28C16-15SC
- Part No.:
- AT28C16-15SC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 24-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
AT28C16-15SC.pdf
- Description:
- IC EEPROM 16KBIT PARALLEL 24SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,986
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Product details
Overview
AT28C16-15SC from Atmel is a 16 Kbit (2,048 × 8) parallel EEPROM with JEDEC-standard byte-wide pinout, 150 ns read access time, 200 µs or 1 ms byte write time, and CMOS/TTL-compatible I/O - used for nonvolatile configuration storage in microcontroller-based industrial control systems.
For engineers reviewing the AT28C16-15SC datasheet, AT28C16-15SC pinout, AT28C16-15SC application, or AT28C16-15SC equivalent, key selection criteria include verified 150 ns tACC, self-timed write with DATA POLLING on I/O7, 10⁴–10⁵ endurance cycles, 5V ±10% supply operation, and JEDEC-compliant SOIC-24 package compatibility.
Technical Context
The AT28C16-15SC operates as a drop-in parallel memory replacement for SRAM in read cycles and implements internal address/data latching during byte writes - enabling bus release for concurrent CPU operations. Its self-timed write cycle uses an internal control timer and automatic clear-before-write logic, eliminating external timing components.
DATA POLLING via I/O7 provides deterministic write completion detection without busy-wait loops; VCC sense (3.8 V threshold), 5 ms power-on delay, and triple-level write inhibit (OE/CE/WE states) ensure robust inadvertent-write protection across commercial temperature range (0°C to 70°C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 16 Kbit (2,048 words × 8 bits) - supports full system configuration storage without external expansion. |
| Read Access Time | 150 ns max - meets timing requirements for 5 MHz bus operation with margin. |
| Byte Write Time | 200 µs (E-version) or 1 ms (standard) - enables rapid field updates of calibration or firmware parameters. |
| Endurance | 10⁴ or 10⁵ write/erase cycles - validated for embedded systems requiring infrequent but reliable reprogramming. |
| Data Retention | 10 years at 25°C - ensures long-term integrity of stored settings without refresh. |
| Supply Voltage | 5 V ±10% - compatible with legacy 5 V logic families and eliminates need for voltage translation. |
| Standby Current | 100 µA (CMOS) - reduces power in sleep-mode industrial nodes. |
Pinout & Package
AT28C16-15SC is supplied in a 24-lead, 0.300" wide plastic gull-wing small outline (SOIC) package per JEDEC MS-013 AA, with pin 1 marked by notch and lead count matching standard 24S footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A10 | Address Inputs | 11-bit address bus supporting full 2K-word addressing; TTL/CMOS compatible thresholds. |
| I/O0–I/O7 | Bidirectional Data Bus | 8-bit parallel interface; I/O7 used for DATA POLLING during write completion detection. |
| CE | Chip Enable | Active-low chip select; when high, forces outputs to high-impedance regardless of OE/WE state. |
| OE | Output Enable | Active-low read control; dual-line enable (with CE) prevents bus contention in shared-memory systems. |
| WE | Write Enable | Active-low write strobe; initiates self-timed byte write with internal latching of address and data. |
| VCC | Power Supply | +5 V ±10% supply input; powers core logic and I/O buffers. |
| GND | Ground Reference | Signal and power return path; decoupling required within 10 mm of VCC pin. |
Key Features
| Feature | Design Value |
|---|---|
| Self-Timed Byte Write | Eliminates external timing circuitry; internal control timer and auto-clear ensure deterministic 200 µs/1 ms completion. |
| DATA POLLING on I/O7 | Enables efficient polling-based write completion detection without interrupt latency or dedicated status lines. |
| VCC Sense & Power-On Delay | Prevents partial writes during power ramp-up by inhibiting WE until VCC ≥ 3.8 V and after 5 ms stabilization. |
| JEDEC-Compliant Pinout | Ensures direct PCB compatibility with industry-standard 2K×8 parallel memory footprints and socket adapters. |
| 32-Byte Identification Area | Accessible via A9 = 12 V; allows unique device serialization or firmware version tracking in production systems. |
Applications
| Industrial PLC Configuration Storage | Medical Device Calibration Data |
|---|---|
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 memory accessed during boot and runtime parameter updates via microcontroller parallel bus. Use Value: 10-year data retention and 10⁴+ endurance guarantee consistent operation over equipment lifetime without battery backup. | Use Scenario: Holding sensor calibration coefficients, patient history flags, and safety-critical setup values in portable diagnostic instruments. IC Role / Device Role / Timing Role: Secure, tamper-resistant parameter store with write-inhibit logic preventing corruption during power transitions. Use Value: VCC-sense and 5 ms power-on delay eliminate risk of invalid writes during brown-out conditions common in battery-powered medical devices. |
| Automotive ECU Bootloader Parameters | Test Equipment Firmware Patch Storage |
Use Scenario: Storing bootloader configuration flags, CAN node IDs, and secure boot keys in engine control units operating across -40°C to +85°C. IC Role / Device Role / Timing Role: Industrial-grade (SI variant) parallel EEPROM interfaced directly to MCU address/data bus with no glue logic. Use Value: 150 ns tACC supports real-time parameter reads during fast boot sequences; JEDEC pinout simplifies migration from legacy ROM/SRAM designs. | Use Scenario: Hosting field-upgradable firmware patches and instrument-specific calibration offsets in automated test systems with frequent software revisions. IC Role / Device Role / Timing Role: High-reliability update memory supporting rapid 200 µs byte writes during maintenance cycles. Use Value: Fast write time reduces downtime during firmware updates; DATA POLLING enables precise synchronization without fixed delays. |
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 | Same electrical specs and timing; packaged in 24-lead PDIP instead of SOIC. | Preferred for through-hole prototyping or legacy board repair where SOIC footprint unavailable. | Select when manual soldering or socket-based development is required; same pinout but different mechanical form factor. |
| AT28C256-15SC | 64 Kbit (32K × 8) capacity; identical 150 ns tACC, SOIC-24 package, and 5 V supply. | Suitable where larger configuration space is needed without changing PCB layout or bus interface. | Choose for future-proofing or systems requiring >16 Kbit storage; shares same footprint and timing but doubles memory depth. |
Compared with AT28C16-15PC and AT28C256-15SC, the AT28C16-15SC delivers optimal balance of compact SOIC packaging, proven 16 Kbit density, and industrial-grade reliability - making it ideal for space-constrained commercial designs where pin compatibility and thermal profile are critical.
Availability
AT28C16-15SC is available at Aetrix Electronics and suitable for industrial control systems, medical instrumentation, automotive ECUs, and test equipment requiring stable component supply and long-term obsolescence management.
Supply support for AT28C16-15SC 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 security ICs for embedded applications.
The AT28C16 product line was designed as a low-power, pin-compatible EEPROM replacement for battery-backed SRAM in 5 V systems - targeting cost-sensitive, high-reliability industrial and automotive applications.
FAQ
What is the maximum write cycle time for AT28C16-15SC?
The AT28C16-15SC has two write speed variants: the standard version requires up to 1 ms per byte write, while the "E" suffix variant achieves 200 µs. The AT28C16-15SC is the standard-speed part, so its maximum byte write time is 1 ms. This value is guaranteed across the commercial temperature range (0°C to 70°C) and includes internal clear, program, and verify phases.
Does AT28C16-15SC support DATA POLLING, and how is it implemented?
Yes, AT28C16-15SC supports DATA POLLING via the I/O7 pin. During a byte write, reading the addressed location returns the complement of the written data on I/O7 (other outputs are indeterminate); when the write completes, true data appears on all outputs including I/O7. This allows the host microcontroller to poll I/O7 without interrupts or timers - a key feature confirmed in the device's AC characteristics table and functional description.
What package type and pin count does AT28C16-15SC use?
AT28C16-15SC uses a 24-lead plastic gull-wing small outline (SOIC) package, designated as 24S per Atmel's ordering information. It conforms to JEDEC MS-013 AA mechanical standards, with 0.300" body width and standard SOIC lead pitch. Pin 1 is identified by a notch, and the pinout matches JEDEC byte-wide memory conventions.
Is AT28C16-15SC compatible with 5 V TTL and CMOS logic levels?
Yes, AT28C16-15SC features CMOS and TTL compatible inputs and outputs. Input thresholds meet VIH ≥ 2.0 V and VIL ≤ 0.8 V; output drive capability satisfies VOL ≤ 0.4 V at 2.1 mA sink and VOH ≥ 2.4 V at 400 µA source. These specifications are verified in the DC Characteristics table and ensure interoperability with both 5 V TTL and CMOS microcontrollers and peripherals.
What is the endurance rating and data retention period for AT28C16-15SC?
The AT28C16-15SC is rated for 10⁴ write/erase cycles (10,000 cycles) and guarantees 10 years of data retention at 25°C. These values are explicitly stated in the Features section and confirmed in the Absolute Maximum Ratings and DC Characteristics sections of the official Atmel datasheet Rev. 0540B–10/98.
AT28C16-15SC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 24-SOIC (0.295", 7.50mm Width)
- 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:
- Surface Mount
- Supplier Device Package:
- 24-SOIC
AT28C16-15SC FAQ
1.How can I place an order for AT28C16-15SC through Aetrix?
Please submit a Request for Quotation (RFQ) for AT28C16-15SC 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 AT28C16-15SC reliable?
The price and inventory of AT28C16-15SC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT28C16-15SC is usually 5 days.
3.What payment methods are accepted for AT28C16-15SC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT28C16-15SC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT28C16-15SC?
AT28C16-15SC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT28C16-15SC 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 AT28C16-15SC?
For technical support, including AT28C16-15SC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT28C16-15SC requirements.
6.How does Aetrix verify that AT28C16-15SC is sourced from the original manufacturer or authorized distributors?
All AT28C16-15SC 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 AT28C16-15SC meets industry standards.
7.What is the process for return or replacement of AT28C16-15SC?
All AT28C16-15SC units undergo pre-shipment inspection (PSI). If there is an issue with AT28C16-15SC, 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 AT28C16-15SC part is unused and in its original packaging.
Return procedure for AT28C16-15SC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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