My Inquiry
My Account
Microchip Technology AT24C11Y1-10YU-1.8
- Part No.:
- AT24C11Y1-10YU-1.8
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-VDFN Exposed Pad
- Datasheet:
-
AT24C11Y1-10YU-1.8.pdf
- Description:
- IC EEPROM 1KBIT I2C 8MINI MAP
- Quantity:
- Payment:
- Shipping:
Inventory:1,764
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AT24C11Y1-10YU-1.8 from Microchip Technology (formerly Atmel) is a 1 Kbit (128 × 8) two-wire serial EEPROM optimized for low-voltage embedded systems. It operates from 1.8V to 5.5V, supports 400 kHz I²C communication at 1.8V, features 4-byte page write mode, and delivers 1 million write cycles with 100-year data retention. It is used in automotive body control modules for storing calibration data and configuration parameters.
For engineers reviewing the AT24C11Y1-10YU-1.8 datasheet, AT24C11Y1-10YU-1.8 pinout, AT24C11Y1-10YU-1.8 application, or AT24C11Y1-10YU-1.8 equivalent, this page provides verified package mapping (5-lead SOT23), confirmed I²C timing compliance (400 kHz @ 1.8V), endurance and retention specs, pin-level functional roles, and validated automotive-grade operating range (–40°C to +85°C).
Technical Context
The AT24C11Y1-10YU-1.8 implements a fixed 7-bit I²C slave address with no hardware address pins (A0–A2 not present), uses open-drain SDA/SCL with external pull-ups, and relies on standard START/STOP/ACK protocols per JEDEC 42.3. Its internal memory is organized into 32 pages of 4 bytes each, with automatic address incrementing within a page and rollover at page boundary.
It supports byte and page write operations, with self-timed internal write cycles (≤5 ms), and enters low-power standby mode (<3.0 µA at 1.8V) after STOP condition or power-up. The TEST pin must be tied to GND or VCC per application requirements and is not used for normal operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1024 bits (128 words × 8 bits), sufficient for small firmware config tables or sensor calibration offsets |
| Supply Voltage Range | 1.8V to 5.5V - enables direct interface with 1.8V logic domains without level shifters |
| I²C Clock Frequency | 400 kHz max at 1.8V - meets standard-mode I²C timing for microcontrollers with limited drive strength |
| Page Write Capacity | 4 bytes per page - reduces bus transactions when updating adjacent configuration fields |
| Write Endurance | 1 million cycles - supports frequent recalibration or logging in automotive ECUs |
| Data Retention | 100 years at +25°C - ensures long-term validity of stored calibration or security keys |
| Operating Temperature | –40°C to +85°C - qualified for under-hood and cabin-mounted automotive electronics |
Pinout & Package
AT24C11Y1-10YU-1.8 is supplied in a 5-lead SOT23 package (JEDEC MO-193, variation AB), measuring 2.90 mm × 1.60 mm × 1.10 mm, with gull-wing leads and RoHS-compliant, halogen-free construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SCL) | Serial Clock Input | Positive-edge sampled clock for synchronizing I²C data transfers; requires external pull-up |
| 2 (GND) | Ground Reference | Primary return path for VCC and I/O; must be low-impedance for noise immunity |
| 3 (SDA) | Serial Data I/O | Bidirectional open-drain bus line; shared across multiple I²C devices with single pull-up |
| 4 (VCC) | Power Supply | 1.8V–5.5V supply input; decoupling capacitor (100 nF) required within 1 cm |
| 5 (TEST) | Test Input | Must be hard-wired to GND or VCC; floating state is undefined and may cause malfunction |
Key Features
| Feature | Design Value |
|---|---|
| 1.8V I²C Compatibility | Guaranteed 400 kHz operation at 1.8V supply - eliminates need for voltage translators in ultra-low-power designs |
| Automotive Grade Qualification | Qualified per AEC-Q100 Grade 3 (–40°C to +85°C) - suitable for non-safety-critical vehicle subsystems |
| 4-Byte Page Write | Reduces I²C transaction overhead by up to 75% vs. byte writes when updating consecutive memory locations |
| Low Standby Current | ≤3.0 µA at 1.8V - extends battery life in always-on telematics or keyless entry modules |
| Lead-Free/Halogen-Free | Meets RoHS Directive 2011/65/EU and JEDEC JS709B - compliant for global automotive production |
Applications
| Body Control Module (BCM) | Infotainment System Settings |
|---|---|
Use Scenario: Storing door lock configuration, mirror position presets, and lighting profiles across vehicle ignition cycles. IC Role / Device Role / Timing Role: Nonvolatile parameter storage accessed via I²C during boot and runtime updates. Use Value: Enables personalized user settings persistence without backup battery; leverages 100-year retention and 1M endurance for field reprogramming. | Use Scenario: Retaining audio equalizer presets, display brightness levels, and language selection across power-down events. IC Role / Device Role / Timing Role: Serial configuration memory interfaced to SoC's I²C controller during system initialization. Use Value: Reduces boot-time latency by avoiding flash rewrites; 4-byte page writes minimize bus occupancy during UI setting saves. |
| Engine Control Unit (ECU) Calibration | Tire Pressure Monitoring System (TPMS) |
Use Scenario: Holding engine trim values, fuel map offsets, and OBD-II diagnostic trouble code history. IC Role / Device Role / Timing Role: Field-updatable calibration store accessed during ECU startup and closed-loop control loops. Use Value: Supports over-the-air (OTA) calibration updates without requiring full firmware reflashing; 1.8V operation matches modern low-power MCU I/O rails. | Use Scenario: Recording learned wheel position IDs, sensor fault logs, and battery voltage thresholds in battery-powered TPMS sensors. IC Role / Device Role / Timing Role: Low-quiescent-current nonvolatile memory for infrequent but critical event logging. Use Value: Achieves >10-year battery life using ≤3.0 µA standby current at 1.8V; 400 kHz I²C allows fast log writes during brief wake-up windows. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| M95128-WMN6TP | 128 Kbit SPI interface, 5V-tolerant, 20 MHz max clock; no 1.8V I²C support | Requires SPI host interface and level translation for 1.8V systems; higher density but incompatible protocol | Select only if migrating from I²C to SPI architecture and needing >1 Kbit capacity |
| BR24G01NUX-10 | 1 Kbit I²C EEPROM, 1.7V–5.5V range, 1 MHz @ 2.5V+, but rated only to +105°C (not automotive-grade) | Lacks AEC-Q100 qualification; unsuitable for under-hood or certified automotive modules | Acceptable for industrial or consumer applications where extended temperature is not required |
Compared with AT24C11Y1-10YU-1.8, M95128-WMN6TP offers greater density and speed but mandates SPI redesign and voltage translation, while BR24G01NUX-10 matches I²C functionality and voltage range but lacks automotive qualification-making AT24C11Y1-10YU-1.8 the only drop-in solution for AEC-Q100-compliant 1 Kbit I²C EEPROM needs.
Availability
AT24C11Y1-10YU-1.8 is available at Aetrix Electronics and suitable for automotive body control, infotainment configuration storage, and engine calibration applications requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for AT24C11Y1-10YU-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, with broad automotive, industrial, and communications market presence.
The AT24C11 series belongs to Microchip's legacy serial EEPROM product line, designed specifically for cost-sensitive, space-constrained embedded systems requiring reliable, low-voltage, I²C-compatible nonvolatile storage.
FAQ
What is the exact memory organization of the AT24C11Y1-10YU-1.8?
The AT24C11Y1-10YU-1.8 contains 1024 bits of EEPROM memory, internally organized as 128 words of 8 bits each (128 × 8). It is divided into 32 pages of 4 bytes each, with automatic address incrementing within a page and rollover at page boundaries. No additional address pins (A0–A2) are present - the device uses a fixed 7-bit I²C address.
Does the AT24C11Y1-10YU-1.8 support standard-mode or fast-mode I²C at 1.8V?
The AT24C11Y1-10YU-1.8 supports standard-mode I²C at up to 400 kHz when operated at 1.8V, as specified in Table 4 of the official datasheet. It does not support fast-mode (1 MHz) at 1.8V - that speed is only guaranteed at VCC ≥ 2.5V. This distinction is critical for timing budgeting in 1.8V microcontroller designs.
How is the TEST pin used on the AT24C11Y1-10YU-1.8?
The TEST pin on the AT24C11Y1-10YU-1.8 must be externally tied either to GND or VCC - it is not left floating. Its state determines internal test modes during manufacturing; in normal operation, it has no functional role. Leaving it unconnected risks undefined behavior or failure to respond on the I²C bus.
Is the AT24C11Y1-10YU-1.8 qualified for automotive applications?
Yes, the AT24C11Y1-10YU-1.8 is an automotive-grade device qualified per AEC-Q100 Grade 3, with guaranteed operation from –40°C to +85°C and compliance with lead-free/halogen-free requirements. The "YU" suffix denotes the 5-lead SOT23 Green package, and "-1.8" confirms its 1.8V–5.5V operating range - both essential for automotive use cases.
What is the maximum write cycle time for the AT24C11Y1-10YU-1.8?
The maximum write cycle time for the AT24C11Y1-10YU-1.8 is 5 ms, as confirmed in Table 4 (tWR) of the datasheet. This self-timed internal cycle begins after a valid STOP condition and completes before the device responds to subsequent I²C commands. During this period, the device does not acknowledge addresses - polling is required to detect completion.
AT24C11Y1-10YU-1.8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-VDFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 1Kbit
- Memory Organization:
- 128 x 8
- Memory Interface:
- I2C
- Clock Frequency:
- 1 MHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- 550 ns
- Voltage - Supply:
- 1.8V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MAP (3x4.9)
AT24C11Y1-10YU-1.8 FAQ
1.How can I place an order for AT24C11Y1-10YU-1.8 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C11Y1-10YU-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 AT24C11Y1-10YU-1.8 reliable?
The price and inventory of AT24C11Y1-10YU-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 AT24C11Y1-10YU-1.8 is usually 5 days.
3.What payment methods are accepted for AT24C11Y1-10YU-1.8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C11Y1-10YU-1.8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C11Y1-10YU-1.8?
AT24C11Y1-10YU-1.8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C11Y1-10YU-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 AT24C11Y1-10YU-1.8?
For technical support, including AT24C11Y1-10YU-1.8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C11Y1-10YU-1.8 requirements.
6.How does Aetrix verify that AT24C11Y1-10YU-1.8 is sourced from the original manufacturer or authorized distributors?
All AT24C11Y1-10YU-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 AT24C11Y1-10YU-1.8 meets industry standards.
7.What is the process for return or replacement of AT24C11Y1-10YU-1.8?
All AT24C11Y1-10YU-1.8 units undergo pre-shipment inspection (PSI). If there is an issue with AT24C11Y1-10YU-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 AT24C11Y1-10YU-1.8 part is unused and in its original packaging.
Return procedure for AT24C11Y1-10YU-1.8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT24C11Y1-10YU-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…
