My Inquiry
My Account
Microchip Technology AT24C02A-10TU-1.8
- Part No.:
- AT24C02A-10TU-1.8
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AT24C02A-10TU-1.8.pdf
- Description:
- IC EEPROM 2KBIT I2C 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,650
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AT24C02A-10TU-1.8 from Microchip Technology (formerly Atmel) is a 2 Kbit I²C-compatible serial EEPROM with 256 × 8-bit organization, 1.8 V to 5.5 V supply range, 100 kHz max clock at 1.8 V, 8-byte page write capability, and industrial temperature operation (−40°C to +85°C). It serves as nonvolatile configuration storage in low-power embedded systems such as smart sensors and battery-powered IoT nodes.
For engineers reviewing the AT24C02A-10TU-1.8 datasheet, AT24C02A-10TU-1.8 pinout, AT24C02A-10TU-1.8 application, or AT24C02A-10TU-1.8 equivalent, key selection considerations include its 1.8 V minimum operating voltage, hardware write protection via WP pin, Schmitt-triggered noise-immune inputs, TSSOP-8 packaging, and automotive-grade reliability specs including 1 million write cycles and 100-year data retention.
Technical Context
The AT24C02A-10TU-1.8 implements a two-wire I²C interface with open-drain SDA/SCL pins, supports standard-mode (100 kHz) operation at 1.8 V, and uses address pins A0–A2 for hardwired device addressing on shared buses. Its internal architecture includes 32 pages of 8 bytes each, enabling partial-page writes without boundary alignment.
Write protection is enforced by the WP pin: tied to VCC, it locks the upper half (1 Kbit) of memory; tied to GND, full read/write access is enabled. The device enters low-power standby mode after STOP condition receipt and features acknowledge polling for write-cycle completion detection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2048 bits (256 × 8), organized as 32 pages × 8 bytes - enables compact firmware parameter storage with fine-grained update granularity. |
| Supply Voltage Range | 1.8 V to 5.5 V - supports direct interfacing with 1.8 V logic families and mixed-voltage systems without level shifters. |
| I²C Clock Frequency | 100 kHz maximum at 1.8 V - ensures reliable timing margin under low-voltage conditions while maintaining compatibility with legacy I²C controllers. |
| Write Cycle Time | 5 ms maximum - defines worst-case latency for persistent data commits; requires software polling or timeout handling in host firmware. |
| Endurance & Retention | 1 million write cycles / 100 years data retention - qualifies for long-life industrial deployments where field updates occur infrequently but must be highly reliable. |
| Operating Temperature | −40°C to +85°C - meets industrial-grade environmental requirements for use in outdoor, factory-floor, or automotive cabin applications. |
| Package | 8-lead TSSOP (8A2), RoHS-compliant, halogen-free - provides compact surface-mount footprint with 4.4 mm body width and JEDEC-standard thermal/mechanical behavior. |
Pinout & Package
AT24C02A-10TU-1.8 is supplied in an 8-lead Thin Shrink Small Outline Package (TSSOP, JEDEC MO-153 variation AA, package code 8A2), measuring 3.00 mm × 4.40 mm × 1.05 mm max height, with gull-wing leads and pin 1 indicator in top-left corner (viewed from top).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A2 | Device Address Inputs | Hardwired address bits allowing up to eight AT24C02A devices on one I²C bus; all three pins required for 2K variant identification. |
| SDA | Serial Data Line | Open-drain bidirectional I²C data line; requires external pull-up resistor; supports wire-OR with other open-drain peripherals. |
| SCL | Serial Clock Input | Input-only I²C clock line; sampled on rising edge for data input, falling edge for data output; Schmitt-triggered for noise immunity. |
| WP | Write Protect Control | Hardware-enforced memory lock: VCC = upper-half protection; GND = full read/write access - eliminates software-only vulnerability to accidental writes. |
| VCC | Power Supply | Primary power input for core logic and memory array; supports 1.8–5.5 V operation with monotonic functionality across full range. |
| GND | Ground Reference | System ground return path for all internal circuits; must be low-impedance and co-located with host MCU ground for noise control. |
Key Features
| Feature | Design Value |
|---|---|
| 1.8 V Low-Voltage Operation | Guaranteed functionality down to 1.8 V supply - enables direct integration with ultra-low-power microcontrollers and energy-harvesting subsystems. |
| Hardware Write Protection (WP) | Dedicated pin disables writes to upper 1 Kbit when pulled high - prevents corruption of critical calibration or security keys during firmware updates. |
| Schmitt-Trigger Inputs | Filtering on SDA/SCL pins suppresses EMI-induced glitches - improves bus robustness in electrically noisy environments like motor drives or industrial PLCs. |
| 8-Byte Page Write Mode | Allows burst programming of up to 8 bytes per I²C transaction - reduces host CPU overhead and total write time versus byte-by-byte writes. |
| Industrial Temperature Range | Validated operation from −40°C to +85°C - ensures stable performance in uncontrolled ambient environments without thermal derating. |
Applications
| Smart Sensor Calibration Storage | IoT Edge Device Configuration |
|---|---|
Use Scenario: Storing factory-calibrated sensor offset/gain coefficients and temperature compensation tables in MEMS accelerometers and environmental sensors. IC Role / Device Role / Timing Role: Nonvolatile parameter repository accessed during power-up initialization and runtime correction routines via I²C. Use Value: Enables plug-and-play accuracy without host-side calibration; leverages 100-year retention to avoid recalibration over product lifetime. |
Use Scenario: Holding network credentials (Wi-Fi SSID/password), device identity (MAC/serial), and user preferences in battery-powered asset trackers and smart meters. IC Role / Device Role / Timing Role: Secure, low-power configuration store updated infrequently but requiring guaranteed persistence across deep-sleep cycles. Use Value: Supports 1.8 V operation matching ultra-low-power MCUs; WP pin prevents credential overwrite during OTA firmware updates. |
| Industrial HMI Button Mapping | Medical Diagnostic Instrument Settings |
Use Scenario: Saving operator-defined button labels, backlight brightness levels, and language selections in panel-mounted HMIs used in factory automation. IC Role / Device Role / Timing Role: Persistent UI state manager interfaced to ARM Cortex-M host via standard I²C peripheral. Use Value: TSSOP-8 package fits tight PCB layouts; 1 million endurance supports daily reconfiguration over 10+ years of service. |
Use Scenario: Archiving clinical calibration constants, test protocol versions, and audit logs in portable ultrasound or blood glucose analyzers. IC Role / Device Role / Timing Role: Regulated data logger with deterministic write timing (5 ms max) for traceable medical device records. Use Value: Industrial temp rating ensures stability inside sealed enclosures; halogen-free/RoHS compliance meets IEC 60601-1 safety requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT24C02D-SSHM-T | Same 2 Kbit capacity and 1.8–5.5 V range, but SOIC-8 package (8S1) instead of TSSOP-8; identical AC/DC specs and WP functionality. | Preferred where board space allows wider SOIC footprint and hand-soldering or legacy reflow profiles are used. | Select when TSSOP assembly infrastructure is unavailable or thermal dissipation requirements favor SOIC's larger pad area. |
| M24C02-RMN6TP | STMicroelectronics 2 Kbit EEPROM; 1.7–5.5 V range, 400 kHz max at ≥2.5 V, but only 100 kHz at 1.8 V; same 8-pin TSSOP-8 (8A2) mechanical fit. | Compatible pinout and voltage range, but lacks dedicated WP pin - write protection relies solely on software address locking. | Choose if higher-speed operation above 1.8 V is needed and hardware WP is not mandatory for system security model. |
Compared with AT24C02D-SSHM-T, the AT24C02A-10TU-1.8 offers identical electrical behavior in a smaller TSSOP footprint ideal for space-constrained designs; versus M24C02-RMN6TP, it provides superior hardware-level write security at the cost of slightly lower maximum clock rate below 2.5 V.
Availability
AT24C02A-10TU-1.8 is available at Aetrix Electronics and suitable for industrial HMI interfaces, battery-powered IoT endpoints, and medical diagnostic instruments requiring stable component supply with guaranteed long-term manufacturability.
Supply support for AT24C02A-10TU-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 acquired Atmel in 2016 and maintains full product continuity, quality assurance, and technical documentation for the AT24C series EEPROMs.
The AT24C02A belongs to Microchip's serial EEPROM product line, designed specifically for reliable, low-voltage nonvolatile storage in resource-constrained embedded systems where size, power, and data integrity are critical.
FAQ
What is the minimum operating voltage for the AT24C02A-10TU-1.8?
The AT24C02A-10TU-1.8 operates down to 1.8 V DC, with full functionality-including 100 kHz I²C communication, page writes, and WP pin response-guaranteed across the 1.8 V to 5.5 V supply range. This makes the AT24C02A-10TU-1.8 suitable for direct connection to 1.8 V logic domains without level translation.
Does the AT24C02A-10TU-1.8 support page write operations, and what is the page size?
Yes, the AT24C02A-10TU-1.8 supports 8-byte page write mode, allowing up to eight sequential bytes to be written in a single I²C transaction. This reduces host processor overhead and total programming time compared to individual byte writes, and the AT24C02A-10TU-1.8 handles internal address incrementing automatically within each 8-byte boundary.
How does the Write Protect (WP) pin function on the AT24C02A-10TU-1.8?
On the AT24C02A-10TU-1.8, the WP pin provides hardware-level write protection: when pulled high to VCC, it locks the upper half (1024 bits) of memory against writes while permitting full read access; when grounded, normal read/write operations are enabled across the entire 2 Kbit array. This behavior is intrinsic to the AT24C02A-10TU-1.8 silicon and requires no configuration registers.
What package type is used for the AT24C02A-10TU-1.8, and is it RoHS compliant?
The AT24C02A-10TU-1.8 uses an 8-lead TSSOP package (JEDEC MO-153, code 8A2), measuring 3.0 mm × 4.4 mm with 0.65 mm lead pitch. The "U" suffix confirms it is lead-free, halogen-free, and fully RoHS compliant-verified per Microchip's official packaging documentation for this ordering code.
What is the maximum I²C clock frequency supported by the AT24C02A-10TU-1.8 at 1.8 V?
At 1.8 V supply, the AT24C02A-10TU-1.8 supports a maximum I²C clock frequency of 100 kHz, as specified in Table 5 of the official datasheet. This timing is validated across the full industrial temperature range (−40°C to +85°C) and includes margins for bus capacitance up to 100 pF plus one TTL load.
AT24C02A-10TU-1.8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 2Kbit
- Memory Organization:
- 256 x 8
- Memory Interface:
- I2C
- Clock Frequency:
- 400 kHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- 900 ns
- Voltage - Supply:
- 1.8V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TSSOP
AT24C02A-10TU-1.8 FAQ
1.How can I place an order for AT24C02A-10TU-1.8 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C02A-10TU-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 AT24C02A-10TU-1.8 reliable?
The price and inventory of AT24C02A-10TU-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 AT24C02A-10TU-1.8 is usually 5 days.
3.What payment methods are accepted for AT24C02A-10TU-1.8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C02A-10TU-1.8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C02A-10TU-1.8?
AT24C02A-10TU-1.8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C02A-10TU-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 AT24C02A-10TU-1.8?
For technical support, including AT24C02A-10TU-1.8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C02A-10TU-1.8 requirements.
6.How does Aetrix verify that AT24C02A-10TU-1.8 is sourced from the original manufacturer or authorized distributors?
All AT24C02A-10TU-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 AT24C02A-10TU-1.8 meets industry standards.
7.What is the process for return or replacement of AT24C02A-10TU-1.8?
All AT24C02A-10TU-1.8 units undergo pre-shipment inspection (PSI). If there is an issue with AT24C02A-10TU-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 AT24C02A-10TU-1.8 part is unused and in its original packaging.
Return procedure for AT24C02A-10TU-1.8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT24C02A-10TU-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…
