Atmel Corporation

Description

Two-wire Serial Interface. Schmitt Trigger, Filtered Inputs for Noise Suppression. Bidirectional Data Transfer Protocol. 100 kHz (1.8V) and 400 kHz (2.7V, 5V) Compatibility. Write Protect Pin for Hardware Data Protection. 8-byte Page (1K, 2K), 16-byte Page (4K, 8K, 16K) Write Modes. Partial Page Writes Allowed. Self-timed Write Cycle (5 ms max). High-reliability. Endurance: 1 Million Write Cycles. Data Retention: 100 Years. Automotive Devices Available. 8-lead In order to optimize the manufacturing process and to further reduce current consumption, an optimized version of Atmel ATmega325P/3250P/329P/3290P has been introduced. The Atmel ATmega325PA/3250PA/329PA/3290PA is a functionally identical, drop- in replacement for the ATmega325P/3250P/329P/ 3290P. All devices are subject to the same qualification process and same set of production tests. ATmega325P/3250P/329P/3290P and ATmega325PA/3250PA/ 329PA/ The ATA542x is part of the RF Multichannel Transceivers family dedicated to unlicensed frequency bands. This document describes the Bill of Material required to operate the. ATA5423/25/28/29. It allows the use of this RF Transceiver into the popular ISM bands 315/345/433/868/915 MHz. It provides information on this product when used between 2.4V and 3.6V which means without the use of the integrated regulator. Most of the components values are the same whatever the Two-wire Serial Interface. Schmitt Trigger, Filtered Inputs for Noise Suppression. Bi-directional Data Transfer Protocol. 100 kHz (2.7V) and 400 kHz (5V) Compatibility. Write Protect Pin for Hardware Data Protection. 8-byte Page (1K, 2K), 16-byte Page (4K, 8K, 16K) Write Modes. Partial Page Writes are Allowed. Self-timed Write Cycle (5 ms max). High-reliability. Endurance: 1 Million Write Cycles. Data Retention: 100 Years. 8-lead PDIP and 8-lead JEDEC SOIC Atmel UHF transceivers family (ATA542x, ATA581x and ATA582x) include an internal. RX/TX switch. This application note provides theoretical information, which is required when using the internal RX/TX switch. The use of an external switch with the UHF trans- ceiver family is also briefly mentioned at the end of the document. This document does not provide any details on alternatives to improving the harmonic rejection. To use this theoret- ical information in practice, a network