ST72325J4B5(2007) View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

ST72325J4B5
(Rev.:2007)

8-bit MCU with 16 to 60K Flash/ROM, ADC, CSS, 5 timers, SPI, SCI, I2C interface

STMicroelectronics 

I2C BUS INTERFACE (Cont’d)

Figure 69. Transfer Sequencing

7-bit Slave receiver:

S Address A

Data1 A

EV1

Data2

EV2

A

DataN

.....

EV2

A

P

EV2

EV4

7-bit Slave transmitter:

S Address A

Data1

EV1 EV3

A

Data2

EV3

A

DataN

.....

EV3

NA

P

EV3-1

EV4

7-bit Master receiver:

S

Address A

EV5

EV6

Data1

A

Data2

EV7

A

.....

EV7

DataN NA

P

EV7

7-bit Master transmitter:

S

Address A

EV5

EV6 EV8

Data1

A

Data2

EV8

A

.....

EV8

DataN

A

P

EV8

10-bit Slave receiver:

S Header A Address A

Data1

EV1

A

DataN

.....

EV2

A

P

EV2

EV4

10-bit Slave transmitter:

Sr Header A

Data1 A

.... DataN A

P

EV1 EV3

EV3 .

EV3-1

EV4

10-bit Master transmitter

S

Header A

Address

EV5

EV9

A

EV6 EV8

Data1

A

.....

EV8

DataN

A

P

EV8

10-bit Master receiver:

Sr

Header A

Data1

EV5

EV6

A

.....

EV7

DataN

A

P

EV7

Legend: S=Start, Sr = Repeated Start, P=Stop, A=Acknowledge, NA=Non-acknowledge,

EVx=Event (with interrupt if ITE=1)

EV1: EVF=1, ADSL=1, cleared by reading SR1 register.

EV2: EVF=1, BTF=1, cleared by reading SR1 register followed by reading DR register.

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

EV3-1: EVF=1, AF=1, BTF=1; AF is cleared by reading SR1 register. BTF is cleared by releasing the

lines (STOP=1, STOP=0) or by writing DR register (DR=FFh). Note: If lines are released by

STOP=1, STOP=0, the subsequent EV4 is not seen.

EV4: EVF=1, STOPF=1, cleared by reading SR2 register.

EV5: EVF=1, SB=1, cleared by reading SR1 register followed by writing DR register.

EV6: EVF=1, cleared by reading SR1 register followed by writing CR register (for example PE=1).

EV7: EVF=1, BTF=1, cleared by reading SR1 register followed by reading DR register.

EV8: EVF=1, BTF=1, cleared by reading SR1 register followed by writing DR register.

EV9: EVF=1, ADD10=1, cleared by reading SR1 register followed by writing DR register.

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