Vijar This seller is currently away until 04 Jan, For additional information, see the Global Shipping Programme terms and conditions — opens in a new window or tab This amount includes applicable customs duties, taxes, brokerage and other fees. If the item comes direct from a manufacturer, it may be delivered in non-retail packaging, such as a plain or unprinted box or plastic bag. With the address pins connected dataasheet hardware part of this tutorial is complete and every pin of the 24LC should be connected to either Vcc, GND or the Arduino. Learn More — opens in a new window or tab Any international postage and import charges are paid in part to Pitney Bowes Inc. See other items More After our data and power pins are connected we have four left on 24LC chip, the WP pin and the three address pins. For example, setting A0 to 1, A1 to 1 and A2 to 0 would produce a binary number of — which is 3 in decimal.
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Low-Voltage and Standard-Voltage Operation? The device is optimized for use in many industrial and commercial applications where low power and low voltage operation are essential. In addition, the entire family is available in 2. This is a stress rating only and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
This pin is open-drain driven and may be wire-ORed with any number of other open-drain or open collector devices. When the pins are not hardwired, the default A2, A1, and A0 are zero. STA tSU. STA tHD. DAT tSU. Data changes during SCL high periods will indicate a start or stop condition as defined below. The device address word consists of a mandatory one, zero sequence for the first four most significant bits as shown. These bits must compare to their corresponding hardwired input pins.
The A2, A1, and A0 pins use an internal proprietary circuit that biases them to a logic low condition if the pins are allowed to float. A read operation is initiated if this bit is high and a write operation is initiated if this bit is low.
If a compare is not made, the device will return to standby state. A low-VCC detector 5-volt option resets the device to prevent data corruption in a noisy environment. Following receipt of the 8-bit data word, the EEPROM will output a zero and the addressing device, such as a microcontroller, must terminate the write sequence with a stop condition. A page write is initiated the same way as a byte write, but the microcontroller does not send a stop condition after the first data word is clocked in.
Instead, after the EEPROM acknowledges receipt of the first data word, the microcontroller can transmit up to 31 more data words. The microcontroller must terminate the page write sequence with a stop condition refer to Figure 3. The data word address lower 5 bits are internally incremented following the receipt of each data word.
The higher data word address bits are not incremented, retaining the memory page row location. When the word address, internally generated, reaches the page boundary, the following byte is placed at the beginning of the same page. This involves sending a start condition followed by the device address word. Only if the internal write cycle has completed will the EEPROM respond with a zero, allowing the read or write sequence to continue.
There are three read operations: current address read, random address read and sequential read. This address stays valid between operations as long as the chip power is maintained. The microcontroller does not respond with an input zero but does generate a following stop condition refer to Figure 4.
Once the device address word and data word address are clocked in and acknowledged by the EEPROM, the microcontroller must generate another start condition. The microcontroller does not respond with a zero but does generate a following stop condition refer to Figure 5. After the microcontroller receives a data word, it responds with an acknowledge. As long as the EEPROM receives an acknowledge, it will continue to increment the data word address and serially clock out sequential data words.
The sequential read operation is terminated when the microcontroller does not respond with a zero but does generate a following stop condition refer to Figure 6. Device Address Figure 2. Byte Write Figure 3. Page Write Note: 1. Current Address Read Figure 5. Random Read Note: 1. Package Type 8P3 8S1 8S2 8-lead, 0.
D, D1 and E1 dimensions do not include mold Flash or protrusions. Mold Flash or protrusions shall not exceed 0. E and eA measured with the leads constrained to be perpendicular to datum. Pointed or rounded lead tips are preferred to ease insertion. Dambar protrusions shall not exceed 0. It is recommended that upper and lower cavities be equal. If they are different, the larger dimension shall be regarded. Determines the true geometric position.
The standard thickness of the solder layer shall be 0. This drawing is for general information only. Dimension D does not include mold Flash, protrusions or gate burrs. Mold Flash, protrusions and gate burrs shall not exceed 0. Dimension E1 does not include inter-lead Flash or protrusions. Inter-lead Flash and protrusions shall not exceed 0. Dimension b does not include Dambar protrusion. Allowable Dambar protrusion shall be 0. Dambar cannot be located on the lower radius of the foot.
Minimum space between protrusion and adjacent lead is 0. The Company assumes no responsibility for any errors which may appear in this document, reserves the right to change devices or specifications detailed herein at any time without notice, and does not make any commitment to update the information contained herein.
No licenses to patents or other intellectual property of Atmel are granted by the Company in connection with the sale of Atmel products, expressly or by implication. Atmel Corporation All rights reserved. Other terms and product names may be the trademarks of others.
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ATMEL 24C64A DATASHEET PDF