AT24C02BN-SH-T - 2Kbit I2C EEPROM | Microchip Technology
N.º da peça: AT24C02BN-SH-T ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $0 | $0,00 |
| 10 | $0 | $0,00 |
| 100 | $0 | $0,00 |
| 500 | $0 | $0,00 |
| 1.000 | $0 | $0,00 |
AT24C02BN-SH-T Visão geral
The AT24C02B is an electrically erasable programmable read-only memory, or EEPROM. In the memory hierarchy, EEPROM belongs to nonvolatile semiconductor memory and is used when a controller needs to retain calibration data, configuration values, serial numbers, or user settings without continuous power. Its two-wire interface connects directly to embedded I2C buses, while address pins can identify multiple devices on the same bus.
Key features include 256 x 8-bit organization, 2Kbit capacity, 1 MHz I2C speed, 550 ns write timing, and an operating voltage range reported as 1.8 V to 5.5 V. The device uses an 8-SOIC surface-mount package and is specified for an industrial temperature range of -40°C to 85°C. The supplied package information also indicates tape-and-reel presentation, although the retrieved distributor data does not provide a verified standard reel quantity.
The AT24C02B family is intended for low-capacity persistent storage rather than high-volume file storage. Its small 256-byte organization is useful for compact product parameters, device identity, and control-system state. The I2C interface reduces pin count, but external pull-up resistors and correct bus address configuration remain important in hardware integration.
Typical uses include industrial controllers, automotive electronics, consumer products, sensor modules, and embedded development boards. Because the device is nonvolatile, stored data can survive power removal, making it suitable for calibration or configuration records that must reload after reset.
Designers should verify the exact address pins, write-cycle timing, pull-up resistor network, and operating voltage against the manufacturer datasheet before release. Software should account for EEPROM write completion before issuing a subsequent read. This page also synthesizes distributor listings, cross-reference results, and application guidance for faster component selection.
Alternativas drop-in para AT24C02BN-SH-T — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
AT24C02BN-SH-B
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
AT24C02BN-10SU-1.8
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
AT24C02C-SSHM-T
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
24AA52T-I/SN
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
AT24C02BN-SP25-B
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
AT24C02BN-SH-T Classificações máximas e características elétricas
| Tipo de memória | EEPROM |
| Tamanho da memória | 2Kbit |
| Organização da memória | 256 x 8 bits |
| Storage Capacity | 256 bytes |
| Interface | I2C, 2-Wire Serial |
| Maximum Bus Speed | 1 MHz |
| Write-Cycle Time | 550 ns |
| Supply Voltage Range | 1.8 V to 5.5 V |
| Faixa de temperatura de operação | -40°C to 85°C |
| Encapsulamento | 8-SOIC, 0.154 inch, 3.90 mm width |
| Tipo de montagem | Surface Mount |
| Terminal Count | 8 pins |
| Address Inputs | A0, A1, A2 |
| Write Protection | WP pin |
| Nonvolatile Storage | Yes |
| Input Filtering | Schmitt-trigger, filtered inputs for noise suppression |
| Data Transfer | Bidirectional |
Configuração de pinos do AT24C02BN-SH-T
| Pino 1 | A0 — Address input; verify against manufacturer pinout |
| Pino 2 | A1 — Address input; verify against manufacturer pinout |
| Pino 3 | A2 — Address input; verify against manufacturer pinout |
| Pino 4 | GND — Ground; verify against manufacturer pinout |
| Pino 5 | SDA — Serial data input/output; verify against manufacturer pinout |
| Pino 6 | SCL — Serial clock; verify against manufacturer pinout |
| Pino 7 | WP — Write-protect input; verify against manufacturer pinout |
| Pino 8 | VCC — Power supply; verify against manufacturer pinout |
Aplicações típicas
AT24C02BN-SH-T é adequado para 6 aplicaçãos: Industrial Controller Configuration, Sensor Calibration Memory, Consumer Product Settings, Automotive Electronic Module, Embedded Development Board, Instrumentation and Test Equipment.
Industrial Controller Configuration
The AT24C02BN-SH-T is suitable for storing controller setup values, device addresses, calibration offsets, and production configuration data. Its 256-byte capacity is sufficient for compact records, while the 1 MHz I2C interface helps the controller access data with relatively few bus transactions. Place the EEPROM near the controller, use the supplied 8-SOIC footprint, and verify address selection with A0, A1, and A2. Firmware should poll write completion before reading newly stored parameters.
Recomendado
Sensor Calibration Memory
The 256-byte EEPROM can retain sensor offsets, gain values, serial identifiers, and calibration status in a compact sensor module. The AT24C02BN-SH-T remains useful when calibration data must survive power cycling and the system does not need large log storage. Its 2Kbit organization keeps the device electrically simple, but calibration records should include versioning and integrity checks. The operating range of -40°C to 85°C supports many industrial environments when validated at system level.
Recomendado
Consumer Product Settings
For consumer products, the AT24C02BN-SH-T can retain user preferences, pairing data, factory configuration, and small product identity records. The nonvolatile format avoids a nonvolatile memory in the host and reduces firmware complexity when settings must reload after power loss. Because the device stores only 256 bytes, the application should define a compact data model and avoid using it for firmware images or large event logs. Validate bus pull-ups and protect WP according to the product's update workflow.
Recomendado
Automotive Electronic Module
The AT24C02BN-SH-T can be evaluated for automotive electronic modules that require a small amount of persistent data, such as trim values, identifiers, counters, or diagnostic configuration. The verified industrial temperature range is -40°C to 85°C, but automotive suitability must also consider system qualification, transient conditions, traceability, and the exact manufacturer part status. Use the I2C bus only after checking address conflicts and write timing, and do not infer AEC-Q100 qualification from the temperature rating alone.
Recomendado
Embedded Development Board
The AT24C02BN-SH-T is convenient for embedded development boards that need to demonstrate nonvolatile configuration storage or an I2C peripheral. Its 8-SOIC package is easy to route on a development board, and the 1 MHz bus capability supports typical embedded test setups. The developer should still check the board's bus voltage and pull-up population, set the A0-A2 address pins intentionally, and provide firmware routines for writes and acknowledgment polling. A compact EEPROM also makes it useful for storing boot metadata.
Recomendado
Instrumentation and Test Equipment
In instrumentation, the AT24C02BN-SH-T can hold calibration constants, instrument identity, range settings, or board configuration. The nonvolatile memory allows a device to recover its configuration after power cycling, while the 2-wire interface reduces wiring compared with a parallel EEPROM. Designers should isolate the bus appropriately, account for the actual measurement-system timing, and include data validation or CRC handling if corrupted settings could affect operation. The 550 ns write specification should be treated as a device reference point and validated in firmware.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para AT24C02BN-SH-T — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | AT24C02BN-SH-B | AT24C02BN-10SU-1.8 | AT24C02C-SSHM-T | 24AA52T-I/SN |
|---|---|---|---|---|---|
| Package | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Memory Type | EEPROM | EEPROM | EEPROM | EEPROM | EEPROM |
| Memory Size | 2Kbit | 2Kbit | 2Kbit | 2Kbit | 2Kbit |
| Organization | 256 x 8 bits | 256 x 8 bits | 256 x 8 bits | 256 x 8 bits | 256 x 8 bits |
| Interface | I2C, 2-Wire Serial | I2C, 2-Wire Serial | I2C, 2-Wire Serial | I2C, 2-Wire Serial | I2C, 2-Wire Serial |
| Maximum Bus Speed | 1 MHz | 1 MHz | 1 MHz | 1 MHz | 400 kHz |
| Supply Voltage Range | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 2.5 V to 5.5 V |
Principais diferenciais
- Target is explicitly listed at 1 MHz (vs 24AA52T-I/SN)
- Verified target temperature range (vs AT24C02C-SSHM-T)
- Target package and capacity are directly identified (vs AT24C02BN-10SU-1.8)
Notas de projeto
Route SDA and SCL as short, continuous signals and place their pull-up resistors close to the bus. The verified device supports a 1 MHz I2C operating point, but the actual rise time depends on bus capacitance, pull-up resistance, supply voltage, and the number of connected devices. Keep the 8-SOIC footprint within the manufacturer land-pattern and thermal guidance, and reserve a clear service route for debugging.
Do not assume that a matching AT24C02B order code is automatically interchangeable. Compare the exact A0/A1/A2 address behavior, supply range, write timing, temperature grade, WP polarity, and package pinout for AT24C02BN-SH-B, AT24C02BN-10SU-1.8, AT24C02C-SSHM-T, or 24AA52T-I/SN. Firmware should also poll write completion and handle partial or interrupted update conditions.
Use the 2-wire bus only after checking that pull-up values meet the rise-time requirements at the intended bus speed and capacitance. The retrieved specifications identify 1 MHz capability for the target and 400 kHz for one related alternative, so mixing families on a high-speed bus can create timing risk. Measure SCL and SDA rise times at the worst-case endpoint and avoid long stubs or unnecessary capacitive loading.
Informações de conformidade
The verified search snippets did not provide an authoritative compliance statement for RoHS, REACH, lead-free status, halogen-free status, or conflict-minerals status. AEC-Q100 is not established by the retrieved data and is not inferred from the industrial temperature range.
