ST72652 データシートの表示（PDF） - STMicroelectronics

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ST72652

LOW-POWER, FULL-SPEED USB 8-BIT MCU WITH 32K FLASH, 5K RAM, FLASH CARD I/F, TIMER, PWM, ADC, I2C, SPI

STMicroelectronics 

ST7265x

I²C SINGLE MASTER BUS INTERFACE (Cont’d)

Figure 68. Transfer Sequencing

Master receiver:

S

Address A

Data1

EV1

EV2

A

Data2

EV3

A

.....

EV3

DataN NA

P

EV3

Master transmitter:

S

Address A

Data1

EV1

EV2 EV4

A

Data2

EV4

A

.....

EV4

DataN

A

P

EV4

Legend:

S=Start, P=Stop, A=Acknowledge, NA=Non-acknowledge

EVx=Event (with interrupt if ITE=1)

EV1: EVF=1, SB=1, cleared by reading SR1 register followed by writing DR register.

EV2: EVF=1, cleared by reading SR1 register followed by writing CR register (for example PE=1).

EV3: EVF=1, BTF=1, cleared by reading SR1 register followed by reading DR register.

EV4: EVF=1, BTF=1, cleared by reading SR1 register followed by writing DR register.

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