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AT83C24B-TISIM Datasheet(PDF) 8 Page - ATMEL Corporation |
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AT83C24B-TISIM Datasheet(HTML) 8 Page - ATMEL Corporation |
8 / 42 page 8 4234F–SCR–10/05 AT83C24 Write Commands The write commands are: 1. Reset: Initializes all the logic and the TWI interface as after a power-up or power-fail reset. If a smart card is active when RESET falls, a deactivation sequence is performed. This is a one- byte command. 2. Write Config: Configures the device according to the last six bits in the CONFIG0 register and to the fol- lowing four bytes in CONFIG1, CONFIG2, CONFIG3 then CONFIG4 registers. This is a five bytes command. Figure 3. Command byte format for Write CONFIG0 command 3. Write Timer: Program the 16-bit automatic reset transition timer with the following two bytes. This is a three bytes command. 4. Write Interface: Program the interface. This is a one-byte command. The MSB of the command byte is fixed at 0. 5. General Call Reset: A general call followed by the value 06h has the same effect as a Reset command. Table 3. Write Commands Description Address Byte (See Table 2) Command Byte Data Byte 1 Data Byte 2 Data Byte 3 Data Byte 4 1. Reset 0100 A 2A1A00 1111 1111 2. Write config 0100 A 2A1A00 (10 + CONFIG0 6 bits) CONFIG1 CONFIG2 CONFIG3 CONFIG4 3. Write Timer 0100 A 2A1A00 1111 1100 TIMER1 TIMER0 4. Write Interface 0100 A 2A1A00 (0+INTERFACE 7 bits) 5. General Call Reset 0000 0000 0000 0110 b7 b6 b5 b4 b3 b2 b1 1 X 0 X X X X CONFIG0 on 6 Bits b0 X |
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