Table of Contents
Advertisement
(3) Operation
The operation flow when receiving read data twice is shown below.
Steps <1> to <15> correspond to <1> to <15> in Figure 4-12.
<1> The start condition is transmitted.
<2> The slave ID is transmitted (first time) (from the 1st to 7th clocks).
<3> R/W information (0) is transmitted (at the 8th clock).
<4> An acknowledge signal is received (at the rising edge of the 9th clock).
<5> The read start address is transmitted (from the 1st to 8th clocks following <4>).
<6> An acknowledge signal is received (at the rising edge of the 9th clock).
<7> The restart condition is transmitted.
<8> The slave ID is transmitted (second time) (from the 1st to 7th clocks following <7>).
<9> R/W information (1) is transmitted (at the 8th clock).
<10> An acknowledge signal is received (at the rising edge of the 9th clock).
<11> Read data is received (first time) (from the 1st to 8th clocks following <10>).
<12> An acknowledge signal is transmitted (from the falling edge of the 8th clock to the falling edge of the 9th
clock).
<13> Read data is received (second time) (from the 1st to 8th clocks following <12>).
(The address is automatically incremented by 1.)
<14> Stop the acknowledge signal transmission.
<15> The stop condition is transmitted.
Note
Do not transmit the acknowledge signal when completing data reception.
2
CHAPTER 4 I
C COMMUNICATIONS
Note
User's Manual U18438EJ2V0UD
59
Advertisement
Table of Contents
