DS2430AT Dallas Semiconducotr, DS2430AT Datasheet
DS2430AT
Related parts for DS2430AT
DS2430AT Summary of contents
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... Reads and writes over a wide voltage range of 2.8V to 6.0V from -40°C to +85°C ORDERING INFORMATION DS2430A TO-92 package DS2430AP 6-pin TSOC package DS2430AT Tape & Reel version of DS2430A DS2430AV Tape & Reel version of DS2430AP DS2430AX Chip Scale Pkg., Tape & Reel 256-Bit 1-Wire ...
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SILICON LABEL DESCRIPTION The DS2430A 256-bit 1-Wire EEPROM identifies and stores relevant information about the product to which it is associated. This lot or product specific information can be accessed with minimal interface, for example a single port pin of ...
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DS2430A BLOCK DIAGRAM Figure DS2430A 102199 ...
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HIERARCHICAL STRUCTURE FOR 1-WIRE PROTOCOL Figure 2 64-BIT LASERED ROM Figure 3 8-Bit CRC Code MSB 1-WIRE CRC GENERATOR Figure 4 48-Bit Serial Number LSB MSB 8 5 Polynomial = 8-Bit Family ...
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MEMORY The memory of the DS2430A consists of three separate sections, called data memory, application register and status register (Figure 5). The data memory and the application register each has its own intermediate storage area called scratchpad that acts as ...
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MEMORY FUNCTION FLOW CHART Figure 6 COPY SCRATCHPAD [55h] After the data stored in the scratchpad has been verified the master may send the Copy Scratchpad command followed by a validation key of A5h to transfer data from the scratchpad ...
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MEMORY FUNCTION FLOW CHART Figure 6 (cont’ d) WRITE APPLICATION REGISTER [99h] This command is essentially the same as the Write Scratchpad command, but it addresses the 64-bit register scratchpad. After issuing the command code, the master must provide a ...
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MEMORY FUNCTION FLOW CHART Figure 6 (cont’ d) READ APPLICATION REGISTER [C3h] This command is used to read the application register or the register scratchpad. As long as the application register is not yet locked, one will receive data from ...
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BUS SYSTEM The 1-Wire bus is a system which has a single bus master and one or more slaves. In all instances, the DS2430A is a slave device. The bus master is typically a microcontroller. The discussion of this ...
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ROM FUNCTIONS FLOW CHART Figure DS2430A 102199 ...
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Transaction Sequence The sequence for accessing the DS2430A via the 1-Wire port is as follows: § Initialization § ROM Function Command § Memory Function Command § Transaction/Data INITIALIZATION All transactions on the 1-Wire bus begin with an initialization sequence. The ...
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After one complete pass, the bus master knows the contents of the ROM in one device. The remaining number of devices and their ROM codes may be identified by additional passes. See Chapter 5 of the Book of DS19xx iButton ...
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READ/WRITE TIMING DIAGRAM Figure 10 Write-1 Time Slot Write-0 Time Slot Read-data Time Slot DS2430A 102199 ...
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MEMORY FUNCTION EXAMPLE Example: Write 2 data bytes to data memory location 0006 and 0007. Read entire data memory. MASTER MODE DATA (LSB FIRST <2 data bytes> ...
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ABSOLUTE MAXIMUM RATINGS* Voltage on DATA to Ground Operating Temperature Storage Temperature Soldering Temperature * This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operation sections ...
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NOTES: 1. All voltages are referenced to ground =external pullup voltage. PUP 3. Input load is to ground additional reset or communication sequence cannot begin until the reset high time has expired. 5. Read data setup ...