Overview
The M24C04-DRDW3TP/K is a 4-Kbit serial EEPROM device designed for automotive applications, manufactured by STMicroelectronics. This device operates up to 125 °C and is compliant with the high reliability standards defined by the Automotive standard AEC-Q100 grade 1. It features a simple serial I²C compatible interface that runs up to 1 MHz. The memory array is based on advanced true EEPROM technology, allowing for byte-alterable memory organized into 32 pages of 16 bytes each. Additionally, the device includes an identification page that can store sensitive application parameters and be permanently locked in read-only mode.
Key Specifications
| Specification | Value |
|---|---|
| Memory Capacity | 4 Kbits (512 x 8 bits) |
| Interface | Serial I²C compatible, up to 1 MHz |
| Operating Temperature | Up to 125 °C |
| Voltage Range | 2.5V to 5.5V |
| Package Type | TSSOP8 |
| Device Select Code | 7-bit, with 2-bit Chip Enable address (E2, E1) |
| Identification Page | 16 bytes, including device identification and application parameters |
| Standby Supply Current | Typically 1 μA at 85 °C and 125 °C |
Key Features
- High Reliability: Compliant with AEC-Q100 grade 1 automotive standard, ensuring high reliability in harsh environments.
- Advanced EEPROM Technology: Byte-alterable memory with 32 pages of 16 bytes each, using true EEPROM technology.
- I²C Interface: Supports serial I²C communication up to 1 MHz, with features like start and stop conditions, acknowledge bits, and sequential read/write operations.
- Identification Page: Includes a 16-byte identification page for storing device identification and application-specific data, which can be permanently locked in read-only mode.
- Power Management: Includes power-on-reset (POR) circuit to prevent inadvertent write operations during power-up and power-down, and supports decoupling of the VCC line with a capacitor.
- Error Correction Code (ECC): Internal ECC logic to detect and correct single-bit errors during read operations, enhancing read reliability.
Applications
The M24C04-DRDW3TP/K is designed for use in automotive applications where high reliability and robust performance are critical. It can be used in various automotive systems such as:
- Automotive control units and sensors.
- Infotainment and navigation systems.
- Advanced driver-assistance systems (ADAS).
- Automotive networking and communication systems.
Q & A
- What is the memory capacity of the M24C04-DRDW3TP/K?
The memory capacity is 4 Kbits, organized as 512 x 8 bits.
- What is the operating temperature range of the M24C04-DRDW3TP/K?
The device operates up to 125 °C.
- What type of interface does the M24C04-DRDW3TP/K use?
The device uses a serial I²C compatible interface up to 1 MHz.
- What is the purpose of the identification page in the M24C04-DRDW3TP/K?
The identification page is used to store device identification and application-specific data, which can be permanently locked in read-only mode.
- How does the device handle power-up and power-down conditions?
The device includes a power-on-reset (POR) circuit to prevent inadvertent write operations during power-up and must be in standby power mode during power-down.
- What is the significance of the ECC logic in the M24C04-DRDW3TP/K?
The ECC logic detects and corrects single-bit errors during read operations, enhancing read reliability.
- Can multiple devices be connected on the same I²C bus?
Yes, up to four memory devices can be connected on a single I²C bus, each with a unique 2-bit code on the Chip Enable (E2, E1) inputs.
- How is the write operation acknowledged in the M24C04-DRDW3TP/K?
The device acknowledges the write operation with an ACK bit during the 9th clock pulse period after the data byte is sent.
- What is the recommended way to decouple the VCC line?
It is recommended to decouple the VCC line with a suitable capacitor (usually 10 nF to 100 nF) close to the device.
- What happens during a power-on-reset (POR) in the M24C04-DRDW3TP/K?
During power-on-reset, the device does not respond to any instruction until VCC reaches the internal threshold voltage, after which it resets and enters standby power mode.
