DS2430A(2012) データシートの表示（PDF） - Maxim Integrated

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コンポーネント説明

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DS2430A
(Rev.:2012)

256-Bit 1-Wire EEPROM

Maxim Integrated 

MEMORY FUNCTION FLOW CHART Figure 6 (continued)

DS2430A

DESIGNS

NEW

FOR WRITE APPLICATION REGISTER [99h]

This command is essentially the same as the Write Scratchpad command, but it addresses the 64-bit

D register scratchpad. After issuing the command code, the master must provide a 1-byte address, followed

by the data to be written. The DS2430A automatically increments the address after every byte it receives.

E After receiving the data byte for address 07h, the address counter wraps around to 00h for the next byte

D and writing continues until the master sends a Reset Pulse. The Write Application Register command can

N be used as long as the application register has not yet been locked. If issued for a device with the

application register locked, the data written to the register scratchpad will be lost.

ME READ STATUS REGISTER [66h]

The status register is a means for the master to find out whether the application register has been

M programmed and locked. After issuing the read status register command, the master must provide the

validation key 00h before receiving status information. The two least significant bits of the 8-bit status

O register are 0 if the application register was programmed and locked; all other bits always read 1. The

REC master may finish the read status command by sending a Reset Pulse at any time.

NOT

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