The AT24C16C-SSHM-T is a specific model of EEPROM ( Electrical ly Erasable Programmable Read-Only Memory ), manufactured by Microchip Technology Inc. It is part of the AT24C series of memory chips. Below is the detailed explanation of the pin functions, specifications, packaging, and circuit principles for the AT24C16C-SSHM-T.
Packaging and Pinout:
The AT24C16C-SSHM-T comes in an 8-pin SOIC (Small Outline Integrated Circuit) package. The detailed pin functions for each pin are as follows:
Pin Number Pin Name Pin Description 1 A0 Address Pin 0: This is one of the address selection pins used to configure the I2C address. 2 A1 Address Pin 1: This is another address selection pin used to configure the I2C address. 3 A2 Address Pin 2: This pin also selects the I2C address in combination with A0 and A1. 4 GND Ground Pin: This pin is connected to the ground of the system and is used to complete the circuit. 5 VCC Power Supply Pin: This pin is used to supply the operating voltage for the device. Typically, 2.5V to 5.5V. 6 SDA Data Pin (I2C): This is the data line for I2C communication. The data is transferred serially over this line. 7 SCL Clock Pin (I2C): This is the clock line for I2C communication. The clock signal synchronizes data transfer. 8 WP Write Protect Pin: This pin is used to disable writing to the memory. If held low, writing is allowed.Detailed Pin Functionality:
The above table lists the 8 pins of the AT24C16C-SSHM-T. Let's break down the specific functionalities:
A0, A1, A2: These are address pins used to configure the 7-bit I2C address of the chip. The address range is determined by the combination of these pins and the fixed part of the address. The address can range from 0x50 to 0x57 for the AT24C16C series. GND: This pin is connected to the ground of the system circuit. It is essential for completing the circuit and allowing the proper operation of the device. VCC: This pin is where the power is supplied to the device. The AT24C16C operates with a supply voltage between 2.5V to 5.5V. It should be connected to the positive power rail in the system. SDA (Serial Data Line): The SDA pin is used for bi-directional data transfer in I2C communication. It is used to send and receive data between the EEPROM and the controlling device (like a microcontroller). This pin is synchronized by the clock signal on the SCL pin. SCL (Serial Clock Line): The SCL pin provides the clock signal for the I2C communication. The controlling device generates this clock signal, and data is transferred on the SDA pin in synchronization with the clock pulses. WP (Write Protect Pin): The WP pin allows the protection of the memory from accidental writing. If this pin is high, write operations to the memory are disabled, and if low, write operations are allowed.Functional Overview:
The AT24C16C-SSHM-T is a 16 Kbit (2048-byte) memory device with I2C interface . It allows the microcontroller or other I2C-compatible device to read and write data to it in byte-level granularity.
FAQ on AT24C16C-SSHM-T:
Q1: What is the maximum clock frequency for I2C communication with the AT24C16C-SSHM-T? A1: The maximum clock frequency for I2C communication with the AT24C16C-SSHM-T is 400 kHz in Fast Mode.
Q2: What is the total memory capacity of the AT24C16C-SSHM-T? A2: The AT24C16C-SSHM-T has a 16 Kbit (2048-byte) memory capacity.
Q3: Can the AT24C16C-SSHM-T operate with a 3.3V supply? A3: Yes, the AT24C16C-SSHM-T can operate with a supply voltage of 3.3V, as it supports a voltage range of 2.5V to 5.5V.
Q4: How many address pins are available on the AT24C16C-SSHM-T? A4: There are three address pins (A0, A1, A2) that can be used to configure the device’s I2C address.
Q5: What is the function of the WP (Write Protect) pin? A5: The WP pin is used to enable or disable write operations. When the WP pin is high, writing to the memory is disabled, and when it is low, writing is allowed.
Q6: How many bits are required to address the memory? A6: The AT24C16C-SSHM-T requires 11 bits to address the full 16 Kbit memory (2048 bytes), including the 3 address pins and 8 bits from the I2C address.
Q7: What is the typical access time for read and write operations? A7: The typical read/write access time is 1ms for a 1-byte operation.
Q8: What is the I2C address range for the AT24C16C-SSHM-T? A8: The I2C address range is from 0x50 to 0x57, based on the configuration of the address pins (A0, A1, A2).
Q9: Is there a way to test if the AT24C16C-SSHM-T is operating correctly? A9: Yes, you can perform a read test by sending a read command to the device and verifying the returned data matches the expected values.
Q10: Can the AT24C16C-SSHM-T be used for both reading and writing data? A10: Yes, the AT24C16C-SSHM-T supports both read and write operations through the I2C protocol.
Q11: What is the power consumption of the AT24C16C-SSHM-T? A11: The power consumption is very low, typically 1 µA in standby mode and 1 mA during active read/write operations.
Q12: What is the function of the VCC pin? A12: The VCC pin is used to supply the operating voltage (between 2.5V and 5.5V) for the chip.
Q13: How is the AT24C16C-SSHM-T different from other EEPROMs? A13: The AT24C16C-SSHM-T uses the I2C interface for communication, making it ideal for use in systems where multiple devices need to share the same data bus.
Q14: What is the maximum write endurance of the AT24C16C-SSHM-T? A14: The typical write endurance is 1 million write/erase cycles per byte.
Q15: Can the AT24C16C-SSHM-T be used in a multi-master I2C system? A15: Yes, the AT24C16C-SSHM-T is compatible with multi-master systems on the I2C bus.
Q16: What is the maximum write time for a single byte? A16: The maximum write time for a single byte is typically 5 ms.
Q17: How is data written to the AT24C16C-SSHM-T? A17: Data is written to the AT24C16C-SSHM-T through the I2C interface by sending a write command followed by the address and data.
Q18: Can the AT24C16C-SSHM-T be used in high-temperature environments? A18: The AT24C16C-SSHM-T operates in the temperature range of -40°C to +85°C, suitable for most industrial applications.
Q19: How do you read data from the AT24C16C-SSHM-T? A19: Data is read by sending a read command through the I2C interface, specifying the memory address to be read.
Q20: What is the primary application of the AT24C16C-SSHM-T? A20: The AT24C16C-SSHM-T is commonly used for data storage in embedded systems, including settings, configuration data, or calibration parameters.
I hope this detailed description and FAQ provide comprehensive insights into the AT24C16C-SSHM-T.
