My Inquiry
My Account
Microchip Technology AT24C02C-MAPD-E
- Part No.:
- AT24C02C-MAPD-E
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-UFDFN Exposed Pad
- Datasheet:
-
AT24C02C-MAPD-E.pdf
- Description:
- IC EEPROM 2KBIT I2C 1MHZ 8UDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,929
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AT24C02C-MAPD-E from Microchip Technology (formerly Atmel) is an automotive-grade 2-kilobit (256 × 8) I²C-compatible serial EEPROM with 8-byte page write capability, 1.7V–5.5V supply range, and AEC-Q100 Grade 3 qualification (−40°C to +85°C). It features hardware write protection via the WP pin, Schmitt-trigger inputs for noise immunity, and 1,000,000 write cycles endurance - deployed in vehicle body control modules for parameter storage and calibration data retention.
For engineers reviewing the AT24C02C-MAPD-E datasheet, AT24C02C-MAPD-E pinout, AT24C02C-MAPD-E application, or AT24C02C-MAPD-E equivalent, key selection criteria include its UDFN-8 package footprint, 400 kHz I²C clock compatibility at 2.5 V, self-timed 5 ms max write cycle, and support for partial page writes without address rollover within the 8-byte boundary.
Technical Context
The AT24C02C-MAPD-E implements a standard two-wire I²C interface with open-drain SDA/SCL pins, internal address comparator logic for device selection using A0–A2 pins, and a dedicated Write Protect (WP) input that disables all write operations when pulled high. Its memory array is organized as 32 pages of 8 bytes each, requiring an 8-bit word address for random access.
It integrates a high-voltage pump and timing circuitry for EEPROM programming, supports acknowledge polling during write cycles, and enters low-power standby mode after Stop conditions or power-up - with typical standby current of 4.0 μA at 5.0 V and −40°C to +85°C operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2,048 bits (256 words × 8 bits), enabling storage of firmware configuration flags or sensor calibration coefficients in compact ECUs. |
| I²C Clock Frequency | Up to 400 kHz at VCC = 2.5 V - compatible with standard-mode I²C controllers without requiring high-speed mode support. |
| Write Cycle Time | Max 5 ms self-timed - allows deterministic timing budgeting for host firmware without polling overhead beyond initial ACK polling. |
| Endurance | 1,000,000 write cycles - supports frequent recalibration logging in telematics or ADAS subsystems over full vehicle lifetime. |
| Data Retention | 100 years at +25°C - ensures long-term integrity of safety-critical calibration data without refresh mechanisms. |
| Operating Voltage | 1.7 V to 5.5 V - interoperable across 1.8 V microcontrollers and legacy 5 V automotive domains without level-shifting. |
| Temperature Range | −40°C to +85°C (AEC-Q100 Grade 3) - qualified for passenger compartment and non-engine-bay electronic control units. |
Pinout & Package
AT24C02C-MAPD-E uses an 8-pad Ultra-Thin Dual No-Lead (UDFN) package, 2.0 mm × 3.0 mm body, 0.50 mm pitch (JEDEC MO-229, variant 8MA2), with wettable flank side walls for automated optical inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Device Address Input | Hardwired LSB of 3-bit device address; enables up to eight AT24C02C devices on one I²C bus when combined with A1/A2. |
| A1 | Device Address Input | Mid-bit of device address; used with A0 and A2 to configure unique I²C slave address (1010 A2 A1 A0 R/W). |
| A2 | Device Address Input | MSB of device address; determines position in 8-device addressing scheme; required for multi-device bus topology. |
| GND | Ground Reference | Primary return path for VCC and signal currents; must be low-impedance to maintain noise margin for Schmitt-trigger inputs. |
| VCC | Power Supply | Single-supply input (1.7–5.5 V); powers internal logic, HV pump, and EEPROM array - no separate VPP required. |
| WP | Write Protect Control | Active-high hardware lock: tied to VCC to freeze memory contents during ECU boot or fault conditions. |
| SCL | Serial Clock Input | Positive-edge sampled clock for data synchronization; open-drain requires external pull-up resistor (typically 2.2–10 kΩ). |
| SDA | Serial Data I/O | Bi-directional, open-drain data line shared across I²C bus; requires same pull-up as SCL and supports wire-OR with other slaves. |
Key Features
| Feature | Design Value |
|---|---|
| Page Write Mode | 8-byte burst writes reduce I²C transaction count by 8× vs. byte writes - critical for minimizing bus occupancy in real-time systems. |
| Schmitt Trigger Inputs | Hysteresis on SCL/SDA/A0–A2/WP suppresses >50 ns noise pulses - eliminates spurious start/stop detection in noisy automotive harness environments. |
| Write Protection Pin | Hardware-enforced read-only mode prevents accidental overwrites during firmware updates or brown-out recovery sequences. |
| Low Standby Current | 4.0 μA at 5.0 V and +85°C - extends battery life in always-on modules such as keyless entry receivers or tire pressure monitors. |
| AEC-Q100 Qualified | Grade 3 qualification confirms reliability under thermal cycling, vibration, and humidity stress - required for Tier-1 automotive production releases. |
Applications
| Body Control Module (BCM) | Instrument Cluster |
|---|---|
Use Scenario: Storing user-configurable settings (e.g., mirror position, seat memory, lighting preferences) that persist across ignition cycles. IC Role / Device Role / Timing Role: Nonvolatile parameter storage with guaranteed 100-year data retention and immunity to power loss during vehicle shutdown. Use Value: Eliminates need for backup capacitors or supercapacitors while meeting OEM requirements for zero-data-loss over 15+ year vehicle service life. | Use Scenario: Holding odometer mileage, service interval counters, and warning lamp history logs in digital dashboards. IC Role / Device Role / Timing Role: Tamper-resistant, write-protected memory for safety-critical mileage data - WP pin tied to MCU-controlled GPIO during update windows only. Use Value: Prevents unauthorized mileage rollback and satisfies regulatory audit trails without software-based encryption overhead. |
| Telematics Control Unit (TCU) | Advanced Driver Assistance Systems (ADAS) |
Use Scenario: Logging GPS trip data, cellular network credentials, and firmware update metadata in connected car gateways. IC Role / Device Role / Timing Role: High-endurance (1M cycles) storage for frequently updated telemetry buffers - leverages partial page writes to avoid erasing unrelated configuration bytes. Use Value: Enables robust field-upgrade capability with minimal wear leveling complexity in resource-constrained MCUs. | Use Scenario: Storing camera calibration offsets, radar beam alignment parameters, and sensor fusion coefficients in front-camera modules. IC Role / Device Role / Timing Role: Automotive-grade EEPROM interfaced directly to ADAS SoC I²C controller - operates reliably at −40°C to +85°C ambient with no derating. Use Value: Ensures consistent perception accuracy across temperature extremes without requiring periodic recalibration in production vehicles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| M95256-DFMN6TP | 256 Kbit SPI interface, 5 ms write time, 1.8–5.5 V, SO8 package | Requires SPI host interface instead of I²C; larger memory but incompatible protocol stack | Select when existing design uses SPI peripherals and board layout accommodates SO8 footprint. |
| BR24G02FJ-3GE2 | 2 Kbit I²C, 1.7–5.5 V, TSSOP-8, AEC-Q100 Grade 2 (−40°C to +105°C) | Same density and interface, but rated for higher temperature - suitable for under-hood placement | Choose for engine control or transmission modules where ambient exceeds +85°C. |
Compared with M95256-DFMN6TP and BR24G02FJ-3GE2, the AT24C02C-MAPD-E offers optimal fit for space-constrained I²C-based body electronics due to its UDFN-8 footprint, Grade 3 qualification, and direct pin compatibility with legacy AT24C02 designs - avoiding PCB redesign or firmware rework.
Availability
AT24C02C-MAPD-E is available at Aetrix Electronics and suitable for automotive body control, instrument cluster, telematics, and ADAS applications requiring stable component supply, long-term lifecycle assurance, and AEC-Q100-compliant traceability.
Supply support for AT24C02C-MAPD-E 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 global semiconductor company specializing in microcontrollers, analog devices, and memory solutions - acquired Atmel in 2016 and maintains full product continuity and automotive qualification support.
The AT24CxxC family was designed specifically for automotive subsystems demanding extended temperature operation, high write endurance, and robust I²C communication - targeting cost-sensitive, space-constrained ECUs where reliability trumps raw speed.
FAQ
What is the maximum I²C clock frequency supported by AT24C02C-MAPD-E?
The AT24C02C-MAPD-E supports up to 400 kHz I²C clock frequency at VCC = 2.5 V. At lower voltages (e.g., 1.7 V), the maximum reliable frequency may decrease depending on bus capacitance and pull-up strength; design validation per AC Characteristics Table 5-3 is recommended for 1.7 V operation.
Does AT24C02C-MAPD-E require an external high-voltage programming supply?
No, AT24C02C-MAPD-E does not require an external high-voltage supply. It integrates an internal charge pump to generate the programming voltage needed for EEPROM writes - only a single VCC supply (1.7 V to 5.5 V) is required for full read/write functionality.
How is write protection implemented on AT24C02C-MAPD-E?
Write protection on AT24C02C-MAPD-E is controlled by the WP (Write Protect) pin: when WP is driven high (to VCC), the entire memory array becomes read-only; when WP is grounded, normal read/write operations are enabled. This hardware lock operates independently of I²C commands and persists through power cycles.
What package type is used for AT24C02C-MAPD-E?
AT24C02C-MAPD-E uses an 8-pad UDFN (Ultra-Thin Dual No-Lead) package, 2.0 mm × 3.0 mm body size with 0.50 mm pitch (JEDEC MO-229 variant 8MA2), featuring wettable flanks for automated optical inspection and solder joint quality verification.
Is AT24C02C-MAPD-E AEC-Q100 qualified, and what grade does it meet?
Yes, AT24C02C-MAPD-E is AEC-Q100 qualified to Grade 3, specifying operation from −40°C to +85°C ambient temperature - validated for use in passenger compartment electronics including door modules, HVAC controls, and infotainment systems.
AT24C02C-MAPD-E Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-UFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- 1 MHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- 450 ns
- Voltage - Supply:
- 2.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-UDFN (2x3)
AT24C02C-MAPD-E FAQ
1.How can I place an order for AT24C02C-MAPD-E through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C02C-MAPD-E 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 AT24C02C-MAPD-E reliable?
The price and inventory of AT24C02C-MAPD-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT24C02C-MAPD-E is usually 5 days.
3.What payment methods are accepted for AT24C02C-MAPD-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C02C-MAPD-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C02C-MAPD-E?
AT24C02C-MAPD-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C02C-MAPD-E 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 AT24C02C-MAPD-E?
For technical support, including AT24C02C-MAPD-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C02C-MAPD-E requirements.
6.How does Aetrix verify that AT24C02C-MAPD-E is sourced from the original manufacturer or authorized distributors?
All AT24C02C-MAPD-E 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 AT24C02C-MAPD-E meets industry standards.
7.What is the process for return or replacement of AT24C02C-MAPD-E?
All AT24C02C-MAPD-E units undergo pre-shipment inspection (PSI). If there is an issue with AT24C02C-MAPD-E, 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 AT24C02C-MAPD-E part is unused and in its original packaging.
Return procedure for AT24C02C-MAPD-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT24C02C-MAPD-E 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…
