参数资料
型号: ST7263BK1B/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, PDIP32
封装: 0.400 INCH, LEAD FREE, SHRINK, PLASTIC, DIP-32
文件页数: 127/140页
文件大小: 1423K
代理商: ST7263BK1B/XXX
ST7263B
87/140
IC BUS INTERFACE (Cont’d)
Figure 44. 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 the SR1 register.
EV2: EVF=1, BTF=1, cleared by reading the SR1 register followed by reading the DR register.
EV3: EVF=1, BTF=1, cleared by reading the SR1 register followed by writing the DR register.
EV3-1: EVF=1, AF=1, BTF=1; AF is cleared by reading the SR1 register. The BTF is cleared
by releasing the lines (STOP=1, STOP=0) or by writing the 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 the SR2 register.
EV5: EVF=1, SB=1, cleared by reading the SR1 register followed by writing the DR register.
EV6: EVF=1, cleared by reading the SR1 register followed by writing the CR register
(for example PE=1).
EV7: EVF=1, BTF=1, cleared by reading the SR1 register followed by reading the DR register.
EV8: EVF=1, BTF=1, cleared by reading the SR1 register followed by writing the DR register.
Slave Receiver
Slave Transmitter
Master Receiver
Master 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
EV3-1
EV4
S
Address
A
Data1
A
Data2
A
.....
DataN
NA
P
EV5
EV6
EV7
S
Address
A
Data1
A
Data2
A
.....
DataN
A
P
EV5
EV6 EV8
EV8
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