Rainbow-electronics DS1672 Instrukcja Użytkownika Pobierz pdf (Strona 12)

DS1672

12 of 12

Figure 6. Data Transfer on 2-Wire Serial Bus

MSB

slave address

R/W

direction

bit

SDA

SCL

START

CONDITION

12 6789

12 89

STOP CONDITION

REPEATED

START CONDITION

3 - 8

acknowledgement

signal from receiver

acknowledgement

signal from receiver

ACK ACK

repeated if more bytes

are transferred

Figure 7. Data Write: Slave Receiver Mode

Figure 8. Data Read: Slave Transmitter Mode

AXXXXXXXXA1101000S 0 XXXXXXXX A XXXXXXXX A XXXXXXXX A P

S - START

A - ACKNOWLEDGE

P - STOP

<RW>

R/W - READ/WRITE OR DIRECTION BIT ADDRESS = D0H

DATA TRANSFERRED

(X+1 BYTES + ACKNOWLEDGE)

AXXXXXXXXA1101000S 1 XXXXXXXX A XXXXXXXX A XXXXXXXX A P

S - START

A - ACKNOWLEDGE

P - STOP

A - NOT ACKNOWLEDGE

<RW>

R/W - READ/WRITE OR DIRECTION BIT ADDRESS = D1H

DATA TRANSFERRED

(X+1 BYTES + ACKNOWLEDGE); NOTE: LAST DATA BYTE IS

FOLLOWED BY A NOT ACKNOWLEDGE (A) SIGNAL)

1 2 ... 7 8 9 10 11 12

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