参数资料
型号: ST72774S9T1/XXX
厂商: STMICROELECTRONICS
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PQFP44
封装: TQFP-44
文件页数: 12/144页
文件大小: 1280K
代理商: ST72774S9T1/XXX
ST72774/ST727754/ST72734
109/144
DDC INTERFACE (Cont’d)
Figure 67. Transfer Sequencing
Legend:
S=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.
EV4: EVF=1, STOPF=1, cleared by reading SR2 register.
Figure 68. Event Flags and Interrupt Generation
Slave receiver:
Slave transmitter:
S Address
A
Data1
A
Data2
A
.....
DataN
A
P
EV1
EV2
EV4
S Address
A
Data1
A
Data2
A
.....
DataN
NA
P
EV1 EV3
EV3
EV4
BTF
ADSL
AF
STOPF
BERR
EVF
INTERRUPT
ITE
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