參數(shù)資料
型號: MR80C52CXXX-36/883:R
廠商: TEMIC SEMICONDUCTORS
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 36 MHz, MICROCONTROLLER, CQCC44
文件頁數(shù): 141/142頁
文件大?。?/td> 25028K
225
8272E–AVR–04/2013
ATmega164A/PA/324A/PA/644A/PA/1284/P
Figure 21-12. Formats and states in the Master Transmitter mode.
21.7.2
Master Receiver mode
In the Master Receiver mode, a number of data bytes are received from a Slave Transmitter
(Slave see Figure 21-13 on page 226). In order to enter a Master mode, a START condition
must be transmitted. The format of the following address packet determines whether Master
Transmitter or Master Receiver mode is to be entered. If SLA+W is transmitted, MT mode is
entered, if SLA+R is transmitted, MR mode is entered. All the status codes mentioned in this
section assume that the prescaler bits are zero or are masked to zero.
S
SLA
W
A
DATA
A
P
$08
$18
$28
R
SLA
W
$10
AP
$20
P
$30
A or A
$38
A
Other master
continues
A or A
$38
Other master
continues
R
A
$68
Other master
continues
$78
$B0
To corresponding
states in slave mode
MT
MR
Successfull
transmission
to a slave
receiver
Next transfer
started with a
repeated start
condition
Not acknowledge
received after the
slave address
Not acknowledge
received after a data
byte
Arbitration lost in slave
address or data byte
Arbitration lost and
addressed as slave
DATA
A
n
From master to slave
From slave to master
Any number of data bytes
and their associated acknowledge bits
This number (contained in TWSR) corresponds
to a defined state of the Two-Wire Serial Bus. The
prescaler bits are zero or masked to zero
S
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MR80C52EXXX-16SHXXX:RD 8-BIT, MROM, 16 MHz, MICROCONTROLLER, CQCC44
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