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Part No.	M24C32-FMB3TP/B
Manufacturer	STMICROELECTRONICS
Size	289 Kbytes
Pages	34 pages
Description	128 Kbit, 64 Kbit and 32 Kbit serial I2C bus EEPROM

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1. Device Overview:

️· Type: This is a serial EEPROM (Electrically Erasable Programmable Read-Only Memory). It's non-volatile, meaning it retains data even when power is off.
️· Interface: Uses the I²C (Inter-Integrated Circuit) two-wire serial protocol (SDA and SCL).
️· Packages: Available in lead-free and RoHS compliant ECOPACK® packages.
️· Sizes: Available in different memory sizes (M24128, M24C64, and M24C32).

2. Key Signals & Functionality:

️· SCL (Serial Clock): Used to synchronize data transfers. The datasheet discusses pull-up resistor requirements for SCL.
️· SDA (Serial Data): Bidirectional line for data transfer. Requires a pull-up resistor.
️· E0, E1, E2 (Chip Enable): These pins determine the Device Select Code (DSC). They need to be tied to VCC or VSS to define the DSC.
️· WC (Write Control): Used to disable write operations to the entire memory for protection.
️· VCC (Supply Voltage): Requires a stable supply with decoupling capacitors. The device has internal power-on reset (POR) circuitry.

3. Memory Organization & Addressing:

️· I²C Addressing: Uses a 7-bit Device Select Code (DSC) which includes a fixed device type identifier (1010) and the chip enable settings (E0, E1, E2).

️· Addressing: Uses a 2-byte address (most significant byte and least significant byte).

4. Important Features / Considerations:

️· Write Protection: The WC pin offers protection against accidental writes.
️· Power-Up Reset: The device includes a POR circuit to prevent unexpected operation during power-up.
️· I²C Bus: Requires pull-up resistors on both SDA and SCL lines for proper operation. The datasheet gives guidance on calculating resistor values based on bus capacitance.

In essence: This datasheet section provides essential information for interfacing with and operating this I²C EEPROM. It outlines the key signals, addressing scheme, and important features related to write protection and power-up behavior.

1. Device Overview:

️· Type: This is a serial EEPROM (Electrically Erasable Programmable Read-Only Memory). It's non-volatile, meaning it retains data even when power is off.
️· Interface: Uses the I²C (Inter-Integrated Circuit) two-wire serial protocol (SDA and SCL).
️· Packages: Available in lead-free and RoHS compliant ECOPACK® packages.
️· Sizes: Available in different memory sizes (M24128, M24C64, and M24C32).

2. Key Signals & Functionality:

️· SCL (Serial Clock): Used to synchronize data transfers. The datasheet discusses pull-up resistor requirements for SCL.
️· SDA (Serial Data): Bidirectional line for data transfer. Requires a pull-up resistor.
️· E0, E1, E2 (Chip Enable): These pins determine the Device Select Code (DSC). They need to be tied to VCC or VSS to define the DSC.
️· WC (Write Control): Used to disable write operations to the entire memory for protection.
️· VCC (Supply Voltage): Requires a stable supply with decoupling capacitors. The device has internal power-on reset (POR) circuitry.

3. Memory Organization & Addressing:

️· I²C Addressing: Uses a 7-bit Device Select Code (DSC) which includes a fixed device type identifier (1010) and the chip enable settings (E0, E1, E2).
️· Addressing: Uses a 2-byte address (most significant byte and least significant byte).

4. Important Features / Considerations:

️· Write Protection: The WC pin offers protection against accidental writes.
️· Power-Up Reset: The device includes a POR circuit to prevent unexpected operation during power-up.
️· I²C Bus: Requires pull-up resistors on both SDA and SCL lines for proper operation. The datasheet gives guidance on calculating resistor values based on bus capacitance.

In essence: This datasheet section provides essential information for interfacing with and operating this I²C EEPROM. It outlines the key signals, addressing scheme, and important features related to write protection and power-up behavior.