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CAT24C0A1GLETE13 Fiches technique(PDF) 4 Page - Catalyst Semiconductor |
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CAT24C0A1GLETE13 Fiches technique(HTML) 4 Page - Catalyst Semiconductor |
4 / 8 page Discontinued Part CAT24C01B 4 Doc. No. 1081, Rev. E © 2005 by Catalyst Semiconductor, Inc. Characteristics subject to change without notice FUNCTIONAL DESCRIPTION The CAT24C01B uses a 2-wire data transmission pro- tocol. The protocol defines any device that sends data to the bus to be a transmitter and any device receiving data to be a receiver. Data transfer is controlled by the Master device which generates the serial clock and all START and STOP conditions for bus access. The CAT24C01B operates as a Slave device. Both the Master and Slave devices can operate as either transmitter or receiver, but the Master device controls which mode is activated. PIN DESCRIPTIONS SCL: Serial Clock The CAT24C01B serial clock input pin is used to clock all data transfers into or out of the device. This is an input pin. SDA: Serial Data/Address The CAT24C01B bidirectional serial data/address pin is used to transfer data into and out of the device. The SDA pin is an open drain output and can be wired with other open drain or open collector outputs. 2-WIRE BUS PROTOCOL The following defines the features of the 2-wire bus protocol: (1) Data transfer may be initiated only when the bus is not busy. (2) During a data transfer, the data line must remain stable whenever the clock line is high. Any changes in the data line while the clock line is high will be interpreted as a START or STOP condition. Figure 2. Write Cycle Timing Figure 1. Bus Timing Figure 3. Start/Stop Timing 5020 FHD F05 5020 FHD F04 5020 FHD F03 tHIGH SCL SDA IN SDA OUT tLOW tF tLOW tR tBUF tSU:STO tSU:DAT tHD:DAT tHD:STA tSU:STA tAA tDH tWR STOP CONDITION START CONDITION ADDRESS ACK 8TH BIT BYTE n SCL SDA START BIT SDA STOP BIT SCL |
Numéro de pièce similaire - CAT24C0A1GLETE13 |
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Description similaire - CAT24C0A1GLETE13 |
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