My Inquiry
My Account
Microchip Technology AT24C16A-10PU-1.8
- Part No.:
- AT24C16A-10PU-1.8
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
AT24C16A-10PU-1.8.pdf
- Description:
- IC EEPROM 16KBIT I2C 400KHZ 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,485
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AT24C16A-10PU-1.8 from Microchip Technology is a 16-Kbit (2048 × 8) two-wire serial EEPROM optimized for low-voltage embedded systems, supporting 1.8V to 5.5V operation, 100 kHz I²C bus speed at 1.8V, 128-page × 16-byte organization, and hardware write protection via the WP pin - used in industrial sensor calibration storage and power-management configuration backup.
For engineers reviewing the AT24C16A-10PU-1.8 datasheet, AT24C16A-10PU-1.8 pinout, AT24C16A-10PU-1.8 application, or AT24C16A-10PU-1.8 equivalent, key selection criteria include 1.8V minimum supply compatibility, 100-year data retention, 1 million write cycles, page-write capability, and SOIC-8 package mechanical fit in space-constrained PCB layouts.
Technical Context
The AT24C16A-10PU-1.8 implements a standard I²C-compatible two-wire interface with open-drain SDA and edge-triggered SCL, supporting bidirectional data transfer and acknowledge polling during internal write cycles. Its address pins A0–A2 are NC (no-connect), limiting bus addressing to a single device per I²C segment.
It uses Schmitt-trigger inputs with noise filtering on SCL/SDA, supports partial page writes within its 16-byte pages, and enforces hardware write protection when WP = VCC - all operating across –40°C to +85°C industrial temperature range with 1.8V–5.5V supply flexibility.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 16 Kbit (2048 words × 8 bits), organized as 128 pages of 16 bytes each - enables efficient block-level configuration storage. |
| Supply Voltage Range | 1.8V to 5.5V - supports direct interfacing with 1.8V logic families and mixed-voltage systems without level shifters. |
| I²C Clock Frequency | 100 kHz maximum at 1.8V - ensures reliable timing margin in low-power microcontroller applications. |
| Write Endurance | 1 million write cycles - suitable for firmware parameter logging with frequent updates over product lifetime. |
| Data Retention | 100 years at 25°C - guarantees long-term integrity of calibration constants and security keys. |
| Write Cycle Time | 5 ms max - defines minimum inter-write interval; impacts real-time update latency in control loops. |
| Standby Current | 0.6 µA typical at 1.8V - minimizes quiescent power in battery-backed or energy-harvesting nodes. |
Pinout & Package
AT24C16A-10PU-1.8 is supplied in an 8-lead JEDEC SOIC (8S1) package, 0.150" wide body, RoHS-compliant and green-marked ("U" suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Device Address Input | No-connect (NC); unused in AT24C16A - simplifies PCB routing and eliminates external pull-up/down requirements. |
| A1 | Device Address Input | No-connect (NC); unused in AT24C16A - allows shared footprint with smaller family members without signal conflict. |
| A2 | Device Address Input | No-connect (NC); unused in AT24C16A - eliminates need for address configuration resistors or jumpers. |
| GND | Ground Reference | Primary return path for VCC and I/O; must be low-impedance to maintain noise immunity on SDA/SCL lines. |
| VCC | Power Supply | 1.8V–5.5V input; decoupling capacitor (0.1 µF) required near pin to suppress I²C switching transients. |
| WP | Write Protect Control | Active-high hardware lock: tied to VCC disables all writes; tied to GND enables full read/write access. |
| SCL | Serial Clock Input | Positive-edge clock for data sampling; requires external pull-up resistor (typically 2.2–10 kΩ) to VCC. |
| SDA | Serial Data I/O | Bidirectional open-drain line; shares pull-up with SCL; supports multi-master arbitration and wire-OR topology. |
Key Features
| Feature | Design Value |
|---|---|
| 1.8V–5.5V Operation | Enables direct integration into ultra-low-power MCU subsystems (e.g., ARM Cortex-M0+ with 1.8V I/O) without voltage translation. |
| 128 × 16-byte Page Architecture | Reduces write overhead vs. byte-wise programming - 16-byte page writes complete in one I²C transaction, improving firmware update efficiency. |
| Schmitt-Trigger & Filtered Inputs | Rejects >100 ns noise pulses on SCL/SDA - critical for robust operation in electrically noisy industrial enclosures or motor-drive proximity. |
| Hardware Write Protection (WP) | Prevents accidental or malicious overwrites during power-up/down or firmware glitches - essential for safety-critical configuration storage. |
| 100-Year Data Retention | Eliminates periodic refresh requirements in sealed or inaccessible deployments (e.g., utility metering, aerospace avionics). |
Applications
| Industrial Sensor Calibration | Smart Energy Meter Configuration |
|---|---|
Use Scenario: Storing factory-calibrated offset/gain coefficients and temperature compensation tables for analog sensor front-ends in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile configuration register bank accessed via I²C during system boot and field recalibration. Use Value: Enables traceable, field-updatable calibration without requiring reprogramming of main MCU flash or physical component replacement. | Use Scenario: Holding tariff schedules, billing registers, and tamper-detection flags in residential electricity meters operating on 1.8V RTC domains. IC Role / Device Role / Timing Role: Secure, low-power persistent memory co-located with real-time clock circuitry for time-stamped event logging. Use Value: Guarantees accurate billing data retention during mains outages using minimal backup current (<1 µA standby). |
| Embedded System Bootloader Parameters | IoT Edge Device Identity Storage |
Use Scenario: Storing secure boot policy flags, firmware version locks, and recovery partition pointers in industrial gateways running dual-image OTA updates. IC Role / Device Role / Timing Role: Trusted configuration store accessed early in boot sequence before main application starts. Use Value: Prevents rollback attacks and enforces signed firmware validation by making policy immutable unless WP is intentionally disabled. | Use Scenario: Holding unique device identifiers (UID), X.509 certificate fingerprints, and TLS root CA hashes in battery-powered environmental sensors. IC Role / Device Role / Timing Role: Cryptographic identity anchor accessed only during TLS handshake initialization. Use Value: Provides hardware-rooted trust without exposing private keys - leverages write-protection to prevent credential overwrite after provisioning. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT24C16B-SSHM-T | Successor part with enhanced ESD rating (4 kV HBM), same 16Kbit density, SOIC-8, 1.7V–5.5V range, and identical pinout. | Designed for new designs requiring higher reliability in electrostatic-prone environments (e.g., handheld test equipment). | Select AT24C16B-SSHM-T for new designs; AT24C16A-10PU-1.8 remains valid for legacy replacements and cost-sensitive volume production. |
| BR24G16NUX-10 | Rohm 16Kbit I²C EEPROM in TSSOP-8, 1.6V–5.5V, 400 kHz @ 1.8V, 1M endurance, but lacks dedicated WP pin (uses software write protection only). | Preferred where higher-speed I²C communication is needed at 1.8V, and hardware WP is not required for system architecture. | Choose BR24G16NUX-10 if 400 kHz bus speed at 1.8V is mandatory and WP functionality can be implemented in firmware. |
Compared with AT24C16B-SSHM-T, AT24C16A-10PU-1.8 offers proven field reliability but lacks updated ESD specs; versus BR24G16NUX-10, it provides hardware-level write security at the cost of lower 1.8V bus speed - making AT24C16A-10PU-1.8 optimal for safety-critical, low-speed, tamper-resistant use cases.
Availability
AT24C16A-10PU-1.8 is available at Aetrix Electronics and suitable for industrial sensor calibration, smart energy meter configuration, and embedded bootloader parameter storage requiring stable component supply and long-term obsolescence management.
Supply support for AT24C16A-10PU-1.8 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
Microchip Technology is a U.S.-based semiconductor company specializing in microcontrollers, analog devices, and nonvolatile memory solutions for industrial, automotive, and communications markets.
The AT24CxxA series targets cost-sensitive, low-power embedded systems needing reliable, pin-compatible serial EEPROM across 1K–16K densities - designed specifically for I²C-based configuration and calibration storage in space- and power-constrained applications.
FAQ
What is the maximum I²C clock frequency supported by AT24C16A-10PU-1.8 at 1.8V?
The AT24C16A-10PU-1.8 supports up to 100 kHz I²C clock frequency when operated at 1.8V, as specified in Table 5 of the official datasheet. This is lower than its 400 kHz capability at 2.7V or 5V, reflecting timing constraints under minimum supply conditions. Designers must configure master controllers accordingly to avoid ACK timeouts or bus errors.
Does AT24C16A-10PU-1.8 require external pull-up resistors on SDA and SCL lines?
Yes, AT24C16A-10PU-1.8 requires external pull-up resistors on both SDA and SCL lines because its I/O pins are open-drain. Typical values range from 2.2 kΩ to 10 kΩ depending on bus capacitance and speed; for 100 kHz operation at 1.8V, 4.7 kΩ is commonly used to balance rise time and power consumption.
Can AT24C16A-10PU-1.8 be used in place of AT24C16B-SSHM-T?
AT24C16A-10PU-1.8 is functionally compatible with AT24C16B-SSHM-T in most applications due to identical pinout, memory map, and I²C protocol, but it lacks the enhanced 4 kV HBM ESD rating and extended 1.7V–5.5V supply range of the B-series. For new designs, Microchip recommends AT24C16B-SSHM-T; AT24C16A-10PU-1.8 remains suitable for legacy replacements.
How does the WP pin function on AT24C16A-10PU-1.8?
On AT24C16A-10PU-1.8, the WP (Write Protect) pin enables hardware-level write inhibition: when pulled high to VCC, all write operations (byte and page) are blocked while reads remain fully functional. When grounded, full read/write access is granted. This provides deterministic, glitch-immune protection independent of firmware state.
What package type is used for AT24C16A-10PU-1.8?
AT24C16A-10PU-1.8 uses an 8-lead JEDEC SOIC (8S1) package, 0.150" wide body, with lead-free, RoHS-compliant "U" finish. Its dimensions conform to JEDEC MS-012, Variation AA, and it is compatible with standard SOIC-8 reflow and wave-solder processes.
AT24C16A-10PU-1.8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- 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:
- I2C
- Clock Frequency:
- 400 kHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- 4.5 µs
- Voltage - Supply:
- 1.8V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
AT24C16A-10PU-1.8 FAQ
1.How can I place an order for AT24C16A-10PU-1.8 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C16A-10PU-1.8 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 AT24C16A-10PU-1.8 reliable?
The price and inventory of AT24C16A-10PU-1.8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT24C16A-10PU-1.8 is usually 5 days.
3.What payment methods are accepted for AT24C16A-10PU-1.8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C16A-10PU-1.8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C16A-10PU-1.8?
AT24C16A-10PU-1.8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C16A-10PU-1.8 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 AT24C16A-10PU-1.8?
For technical support, including AT24C16A-10PU-1.8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C16A-10PU-1.8 requirements.
6.How does Aetrix verify that AT24C16A-10PU-1.8 is sourced from the original manufacturer or authorized distributors?
All AT24C16A-10PU-1.8 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 AT24C16A-10PU-1.8 meets industry standards.
7.What is the process for return or replacement of AT24C16A-10PU-1.8?
All AT24C16A-10PU-1.8 units undergo pre-shipment inspection (PSI). If there is an issue with AT24C16A-10PU-1.8, 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 AT24C16A-10PU-1.8 part is unused and in its original packaging.
Return procedure for AT24C16A-10PU-1.8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT24C16A-10PU-1.8 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…
