M24C32-RMN6TP - 32Kbit I2C EEPROM | STMicroelectronics
部品番号: M24C32-RMN6TP ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $0.45 | $0.45 |
| 10 | $0.4 | $4.00 |
| 100 | $0.35 | $35.00 |
| 500 | $0.3 | $150.00 |
| 1,000 | $0.25 | $250.00 |
M24C32-RMN6TP 概要
A serial EEPROM (Electrically Erasable Programmable Read-Only Memory) is a non-volatile memory that retains data when power is removed, and can be electrically erased and reprogrammed in-system. It is a type of EEPROM, which falls under the broader category of non-volatile memory (NVM) in the memory hierarchy. Serial EEPROMs use a serial interface (such as I2C, SPI, or Microwire) to communicate with a host controller, reducing pin count and PCB area compared to parallel EEPROMs. The M24C32 is part of the M24Cxx family of I2C EEPROMs from STMicroelectronics, which includes densities from 1 Kbit to 512 Kbit, all sharing a common command set and addressing scheme.
Key features of the M24C32-RMN6TP include a write cycle time of 5 ms (typical), byte and page write modes (up to 32-byte page), and a write protect pin (WC) for hardware data protection. The device supports both sequential and random read modes, and includes an internal write protection scheme with a software write protect feature (via the WC pin). It also features a Schmitt trigger input for noise immunity and a noise filter on the SCL and SDA lines, ensuring reliable operation in electrically noisy environments. The operating temperature range is -40°C to +85°C, and the device is RoHS compliant and halogen-free.
Technically, the M24C32 uses a floating-gate transistor technology for non-volatile storage, with a charge pump for programming and erasing. The I2C interface is compatible with standard, fast, and fast mode plus speeds, and the device supports 7-bit and 8-bit device addressing (with three address pins A0, A1, A2 for up to 8 devices on the same bus). The memory array is organized into 128 pages of 32 bytes each, and the device includes a self-timed write cycle with automatic erase-before-write. The write cycle time is 5 ms, and the device has an endurance of 1 million write cycles and a data retention of 40 years.
Typical applications include parameter storage in industrial sensors, calibration data in medical devices, configuration storage in networking equipment, and firmware update storage in consumer electronics. The low power consumption (standby current of 1 uA) and wide voltage range make it ideal for battery-operated IoT devices and portable instruments. In an industrial sensor application, the M24C32 can store calibration coefficients and device configuration, which are read at power-up and updated periodically.
When designing with this device, ensure that the I2C bus pull-up resistors are properly sized for the bus capacitance and speed. The WC pin should be tied to ground for normal write operations or to VCC for write protection. For reliable operation, decouple the VCC pin with a 0.1 uF ceramic capacitor close to the device. Also, consider the maximum write cycle time (5 ms) when planning write operations, and avoid exceeding the maximum clock frequency for the selected voltage range.
ドロップイン代替品: M24C32-RMN6TP — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
クイック比較ツール — 並列比較する代替部品を選択:
M24C32-WMN6TP
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
M24C32-RMN6P
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
M24C32-RMN6TG
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
AT24C32E-SSHM-T
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
CAT24C32WI-GT3
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
24AA32AT-I/SN
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
M24C32-RMN6TP 仕様
| メモリサイズ | 32 Kbit (4 Kbyte) |
| メモリ構成 | 4096 x 8 bits |
| インターフェースタイプ | I2C (2-wire) |
| 最大クロック周波数 | 400 kHz (Fast mode), 1 MHz (Fast mode Plus) |
| Operating Voltage Range | 1.8 V to 5.5 V |
| Write Cycle Time | 5 ms (typical) |
| Page Size | 32 bytes |
| Write Protect | Yes (WC pin) |
| 動作温度範囲 | -40°C to +85°C |
| Standby Current | 1 uA (typical) |
| Active Current (Read) | 0.5 mA (typical at 400 kHz) |
| Endurance | 1 million write cycles |
| Data Retention | 40 years |
| パッケージ | SO-8N (150 mil) |
| 実装タイプ | Surface Mount |
| RoHS ステータス | Compliant |
| ハロゲンフリー | Yes |
M24C32-RMN6TP ピン構成
| ピン 1 | A0 — Address input 0 |
| ピン 2 | A1 — Address input 1 |
| ピン 3 | A2 — Address input 2 |
| ピン 4 | VSS — Ground |
| ピン 5 | SDA — Serial data (I2C) |
| ピン 6 | SCL — Serial clock (I2C) |
| ピン 7 | WC — Write control (active high) |
| ピン 8 | VCC — Power supply |
主な用途
M24C32-RMN6TP の用途: 6 件s: Industrial Sensor Calibration, Medical Device Configuration, Networking Equipment Configuration, Consumer Electronics Firmware Storage, IoT Device Parameter Storage, Automotive Electronics.
Industrial Sensor Calibration
The M24C32-RMN6TP is used to store calibration coefficients and configuration data in industrial sensors. Its wide voltage range (1.8V-5.5V) and industrial temperature range (-40°C to +85°C) ensure reliable operation in harsh environments. The I2C interface allows easy integration with microcontrollers, and the low standby current (1 uA) is ideal for battery-powered sensors. In a typical application, the sensor's microcontroller reads calibration data from the EEPROM at power-up and updates it periodically. The write protect pin (WC) can be used to prevent accidental writes during operation. The 32-Kbit capacity is sufficient for storing multiple calibration tables and device parameters. The high endurance (1 million cycles) ensures long-term reliability in applications that require frequent calibration updates.
おすすめ
Medical Device Configuration
In medical devices, the M24C32-RMN6TP stores device configuration, calibration data, and usage logs. Its high reliability (40-year data retention, 1 million write cycles) is critical for patient safety and regulatory compliance. The wide voltage range allows operation from 3.3V or 5V supplies commonly used in medical electronics. The small SO-8 package saves PCB space in compact devices. The I2C interface simplifies communication with the main processor. The write protect feature prevents accidental data corruption. The low power consumption extends battery life in portable medical monitors. The industrial temperature range ensures operation in clinical environments. The device is RoHS compliant and halogen-free, meeting medical device environmental standards.
おすすめ
Networking Equipment Configuration
The M24C32-RMN6TP is used in networking equipment (routers, switches) to store MAC addresses, device configuration, and firmware update metadata. Its fast write cycle (5 ms) and page write mode (32 bytes) enable efficient configuration updates. The wide voltage range (1.8V-5.5V) supports various logic levels in networking hardware. The high endurance (1 million cycles) is suitable for frequent configuration changes. The I2C interface is widely supported by network processors and management controllers. The small package allows placement on dense PCBs. The industrial temperature range ensures operation in equipment rooms with varying temperatures. The device's reliability ensures that network settings are preserved across power cycles.
おすすめ
Consumer Electronics Firmware Storage
In consumer electronics (smart TVs, set-top boxes, gaming consoles), the M24C32-RMN6TP stores firmware update metadata, user settings, and device serial numbers. Its low cost and small footprint make it ideal for high-volume production. The wide voltage range (1.8V-5.5V) is compatible with various SoC power domains. The fast write cycle (5 ms) allows quick firmware updates. The page write mode (32 bytes) reduces write time for large data blocks. The high endurance (1 million cycles) supports frequent updates. The I2C interface is standard in consumer SoCs. The device's reliability ensures that user settings are retained across power cycles. The RoHS compliance meets global environmental regulations.
おすすめ
IoT Device Parameter Storage
The M24C32-RMN6TP is ideal for IoT devices that need to store device credentials, sensor calibration, and network configuration. Its ultra-low standby current (1 uA) is critical for battery-powered IoT nodes. The wide voltage range (1.8V-5.5V) supports energy harvesting and battery chemistries. The small SO-8 package fits in compact IoT modules. The I2C interface is supported by most microcontrollers and wireless SoCs. The write protect pin (WC) prevents unauthorized writes, enhancing security. The high endurance (1 million cycles) supports frequent updates in dynamic environments. The 40-year data retention ensures long-term operation in the field. The industrial temperature range allows deployment in outdoor and industrial IoT applications.
おすすめ
Automotive Electronics
In automotive electronics, the M24C32-RMN6TP stores odometer data, seat position settings, and infotainment system configuration. Its wide voltage range (1.8V-5.5V) and industrial temperature range (-40°C to +85°C) meet automotive requirements. The high endurance (1 million cycles) supports frequent writes in applications like trip computers. The I2C interface is widely used in automotive ECUs. The small SO-8 package is suitable for space-constrained modules. The write protect feature prevents accidental data corruption. The device's reliability is critical for safety-related data. The RoHS compliance meets automotive environmental standards. The 40-year data retention ensures data persists for the vehicle's lifetime.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: M24C32-RMN6TP — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | M24C32-WMN6TP | AT24C32E-SSHM-T | CAT24C32WI-GT3 |
|---|---|---|---|---|
| Package | SO-8N (150 mil) | SO-8N (150 mil) - same | SO-8N (150 mil) - same | SO-8N (150 mil) - same |
| Brand | STMicroelectronics | STMicroelectronics | Microchip Technology | onsemi |
| Memory Size | 32 Kbit | 32 Kbit | 32 Kbit | 32 Kbit |
| Operating Voltage Range | 1.8V to 5.5V | 2.5V to 5.5V | 1.7V to 5.5V | 1.8V to 5.5V |
| Maximum Clock Frequency | 1 MHz | 1 MHz | 1 MHz | 1 MHz |
| Write Cycle Time | 5 ms | 5 ms | 5 ms | 5 ms |
| Page Size | 32 bytes | 32 bytes | 32 bytes | 32 bytes |
| Endurance | 1 million cycles | 1 million cycles | 1 million cycles | 1 million cycles |
主な差別化要因
- Wider voltage range than same-brand alternative （vs M24C32-WMN6TP)
- Higher maximum clock frequency than some cross-brand alternatives （vs AT24C32E-SSHM-T)
- STMicroelectronics brand reliability （vs CAT24C32WI-GT3)
設計ノート
Place a 0.1 uF ceramic decoupling capacitor as close as possible to the VCC pin (pin 8) and ground. The capacitor should be connected between VCC and VSS with short traces. For I2C bus, use pull-up resistors (typically 4.7 kOhm for 100 kHz, 2.2 kOhm for 400 kHz, 1 kOhm for 1 MHz) on SDA and SCL lines. The pull-up resistors should be connected to the same supply voltage as the EEPROM's VCC. Ensure the bus capacitance does not exceed the maximum specified in the datasheet (typically 400 pF).
Do not exceed the maximum write cycle time of 5 ms when performing consecutive writes. The device will not acknowledge during the write cycle, so the master must wait for the write cycle to complete before sending the next command. Also, ensure the WC pin is properly tied to ground for write operations or to VCC for write protection. Floating the WC pin can cause unpredictable behavior. Additionally, verify that the I2C address pins (A0, A1, A2) are correctly tied to VCC or VSS to avoid address conflicts on the bus.
The M24C32-RMN6TP has a standby current of 1 uA and an active read current of 0.5 mA at 400 kHz. For battery-powered applications, use the device's standby mode by ensuring the I2C bus is idle. The device automatically enters standby mode when the bus is inactive. To minimize power consumption, avoid continuous polling and use the device's sequential read feature to read multiple bytes in one operation. Also, consider using the write protect pin to prevent accidental writes that could increase power consumption.
コンプライアンス情報
RoHS compliant and halogen-free per STMicroelectronics product page. Not AEC-Q100 qualified; for automotive, consider AEC-Q100 qualified variants if available.
