My Inquiry
My Account
Microchip Technology AT24C02BN-SH-B
- Part No.:
- AT24C02BN-SH-B
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT24C02BN-SH-B.pdf
- Description:
- IC EEPROM 2KBIT I2C 1MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,931
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AT24C02BN-SH-B from Microchip Technology (formerly Atmel) is a 2 Kbit I²C-compatible serial EEPROM with 256 × 8-bit organization, 1.8–5.5 V operation, hardware write protection via WP pin, and 8-lead SOIC (8S1) package with NiPdAu lead finish. It delivers reliable nonvolatile storage for configuration data in embedded control, power management, and sensor calibration systems.
For engineers reviewing the AT24C02BN-SH-B datasheet, AT24C02BN-SH-B pinout, AT24C02BN-SH-B application, or AT24C02BN-SH-B equivalent, key selection criteria include its 400 kHz/1 MHz I²C speed grade, 8-byte page write capability, 1 million write cycles endurance, 100-year data retention, and compatibility with low-voltage microcontrollers operating down to 1.8 V.
Technical Context
The AT24C02BN-SH-B implements a two-wire serial interface compliant with standard I²C protocol, supporting bidirectional data transfer with Schmitt-triggered, noise-filtered SDA and SCL inputs. Device addressing uses hardwired A0–A2 pins, enabling up to eight devices on a single bus.
It features an internal timing-controlled write cycle (max 5 ms), acknowledge polling support, and hardware-based write protection that disables all write operations when WP is tied to VCC. The EEPROM retains data across power cycles and operates across –40°C to +85°C industrial temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2048 bits (256 × 8-bit words), sufficient for firmware revision IDs, calibration coefficients, or user settings |
| Interface | Two-wire I²C serial interface with 400 kHz (1.8–2.7 V) or 1 MHz (5 V) clock support |
| Write Protection | Hardware-enabled via WP pin: full-array lock when pulled high to VCC |
| Endurance | 1 million write cycles per memory location, enabling frequent field updates without premature wear-out |
| Data Retention | 100 years at 25°C, ensuring long-term reliability in unattended or maintenance-free deployments |
| Supply Voltage | 1.8 V to 5.5 V - interoperable with both legacy 5 V and modern ultra-low-power 1.8 V microcontrollers |
| Operating Temp | –40°C to +85°C - qualified for industrial-grade embedded systems without derating |
Pinout & Package
AT24C02BN-SH-B is packaged in an 8-lead JEDEC SOIC (8S1) with NiPdAu lead finish, measuring 4.9 mm × 3.9 mm × 1.5 mm (L × W × H), RoHS-compliant and halogen-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Device Address Input | Hardwired LSB of 3-bit device address; enables multi-device bus configuration (up to 8 units) |
| A1 | Device Address Input | Mid-bit of device address; must match physical strap to avoid bus contention |
| A2 | Device Address Input | MSB of device address; determines unique I²C slave address (0x50–0x57) |
| GND | Ground Reference | Return path for VCC and signal logic; requires low-impedance PCB connection to minimize noise coupling |
| VCC | Power Supply | Single-supply input (1.8–5.5 V); bypass capacitor (0.1 µF) required near pin for stable I²C communication |
| WP | Write Protect Control | Active-high hardware lock: ties entire 2K array read-only when driven to VCC |
| SCL | Serial Clock Input | Master-generated clock (400 kHz/1 MHz); open-drain compatible with external pull-up resistor |
| SDA | Serial Data I/O | Bidirectional open-drain line; shared across multiple I²C slaves; requires external pull-up |
Key Features
| Feature | Design Value |
|---|---|
| Noise-immune inputs | Schmitt-trigger + RC filtering on SDA/SCL ensures robust operation in electrically noisy industrial environments |
| Page write mode | 8-byte burst writes reduce I²C transaction overhead and accelerate bulk configuration updates |
| Low-power standby | Typical 0.6 µA at 1.8 V enables always-on storage in battery-powered IoT edge nodes |
| Self-timed write cycle | Internal 5 ms max erase/write eliminates need for software delay loops or status polling in most cases |
| Multiple package options | SOIC (8S1) variant supports drop-in replacement in legacy designs while maintaining footprint compatibility |
Applications
| Industrial Sensor Calibration | Embedded Power Management |
|---|---|
Use Scenario: Storing factory-trimmed offset/gain coefficients for analog sensor front-ends in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile configuration store accessed during system boot and runtime recalibration sequences. Use Value: Enables traceable, field-updatable calibration without requiring reprogramming of main MCU flash or external programming tools. | Use Scenario: Holding dynamic power state parameters (e.g., rail sequencing delays, fault thresholds) in AC/DC SMPS controllers. IC Role / Device Role / Timing Role: Persistent parameter repository queried at power-on reset and updated after adaptive learning cycles. Use Value: Supports self-optimizing power delivery with zero-latency access to last-known-good settings after brownout recovery. |
| Consumer Device Settings | Automotive Body Control |
Use Scenario: Saving user preferences (brightness, volume, language) in smart home hubs and display modules. IC Role / Device Role / Timing Role: Low-speed I²C peripheral providing persistent storage independent of host processor state. Use Value: Guarantees instant restoration of UI state after cold restart, improving perceived responsiveness and UX consistency. | Use Scenario: Storing door lock actuator calibration points and mirror position memories in automotive body control modules (BCM). IC Role / Device Role / Timing Role: Safety-relevant nonvolatile memory accessed during vehicle wake-up and sleep transitions. Use Value: Meets AEC-Q100 stress test requirements for data integrity over 15+ year vehicle lifetime under thermal cycling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| M24C02-RMN6TP | 2 Kbit I²C EEPROM, 1.7–5.5 V supply, 400 kHz max speed, SOIC-8 package, no WP pin | Lacks hardware write protect; requires software-level lock implementation for critical configuration data | Choose when cost sensitivity outweighs need for hardware-level write security |
| BR24G02NUX-10 | 2 Kbit I²C EEPROM, 1.6–5.5 V, 1 MHz max speed, TSSOP-8, built-in WP pin, 1.8 V optimized | Higher speed at low voltage and smaller TSSOP footprint; identical endurance and retention specs | Prefer for space-constrained designs needing faster 1.8 V writes and same reliability profile |
Compared with M24C02-RMN6TP and BR24G02NUX-10, the AT24C02BN-SH-B offers verified hardware write protection in SOIC-8 with NiPdAu finish-critical for industrial firmware integrity-while maintaining full backward compatibility with legacy Atmel-based BOMs.
Availability
AT24C02BN-SH-B is available at Aetrix Electronics and suitable for industrial sensor calibration, embedded power management, and consumer device settings requiring stable component supply and long-term lifecycle support.
Supply support for AT24C02BN-SH-B 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 components, and memory solutions, with broad industrial and automotive qualification capabilities.
The AT24C02BN-SH-B belongs to Microchip's legacy Atmel serial EEPROM product line, designed specifically for low-power, space-constrained embedded systems requiring robust, field-programmable nonvolatile storage with I²C simplicity.
FAQ
What is the maximum I²C clock frequency supported by the AT24C02BN-SH-B?
The AT24C02BN-SH-B supports up to 1 MHz I²C clock frequency at VCC = 5.0 V, and 400 kHz at VCC = 1.8 V, 2.5 V, or 2.7 V. These speed grades are guaranteed across the full industrial temperature range (–40°C to +85°C) and align with standard-mode and fast-mode I²C specifications. The AT24C02BN-SH-B does not support high-speed mode (3.4 MHz).
Does the AT24C02BN-SH-B require external pull-up resistors on SDA and SCL lines?
Yes, the AT24C02BN-SH-B requires external pull-up resistors on both SDA and SCL lines because it uses open-drain outputs. Typical values range from 2.2 kΩ to 10 kΩ depending on bus capacitance and desired rise time. The AT24C02BN-SH-B datasheet specifies maximum input capacitance (6 pF for SCL, 8 pF for SDA), guiding proper resistor selection to meet I²C timing requirements.
How does the write protect (WP) pin function on the AT24C02BN-SH-B?
When the WP pin of the AT24C02BN-SH-B is driven high to VCC, all write operations-including byte write, page write, and write to the entire 2K array-are disabled. When WP is grounded, normal read and write operations proceed. This hardware-level lock prevents accidental or malicious overwrites without requiring firmware intervention, making the AT24C02BN-SH-B suitable for safety-critical configuration storage.
Can the AT24C02BN-SH-B be used in automotive applications?
The AT24C02BN-SH-B is specified for industrial temperature range (–40°C to +85°C) and is not AEC-Q100 qualified. While some automotive subsystems (e.g., infotainment accessories) may use it, Microchip explicitly states their serial EEPROMs are "not intended, authorized, or warranted for use as components in applications intended to support or sustain life." For certified automotive use, select AEC-Q100 qualified variants like AT24C02C-SSHM-T.
What package type and lead finish does the AT24C02BN-SH-B use?
The AT24C02BN-SH-B uses an 8-lead JEDEC SOIC (8S1) package with NiPdAu (nickel-palladium-gold) lead finish. This finish provides superior wire-bondability, corrosion resistance, and solderability compared to standard SnPb or matte tin, and is fully RoHS-compliant and halogen-free per Microchip's ordering documentation.
AT24C02BN-SH-B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm 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:
- 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-SOIC
AT24C02BN-SH-B FAQ
1.How can I place an order for AT24C02BN-SH-B through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C02BN-SH-B 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 AT24C02BN-SH-B reliable?
The price and inventory of AT24C02BN-SH-B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT24C02BN-SH-B is usually 5 days.
3.What payment methods are accepted for AT24C02BN-SH-B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C02BN-SH-B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C02BN-SH-B?
AT24C02BN-SH-B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C02BN-SH-B 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 AT24C02BN-SH-B?
For technical support, including AT24C02BN-SH-B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C02BN-SH-B requirements.
6.How does Aetrix verify that AT24C02BN-SH-B is sourced from the original manufacturer or authorized distributors?
All AT24C02BN-SH-B 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 AT24C02BN-SH-B meets industry standards.
7.What is the process for return or replacement of AT24C02BN-SH-B?
All AT24C02BN-SH-B units undergo pre-shipment inspection (PSI). If there is an issue with AT24C02BN-SH-B, 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 AT24C02BN-SH-B part is unused and in its original packaging.
Return procedure for AT24C02BN-SH-B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT24C02BN-SH-B 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…
