參數(shù)資料
型號: AT89C51IC2-SLSIL
廠商: Atmel
文件頁數(shù): 138/140頁
文件大?。?/td> 0K
描述: IC 8051 MCU FLASH 32K 44PLCC
標準包裝: 27
系列: 89C
核心處理器: 8051
芯體尺寸: 8-位
速度: 40MHz
連通性: I²C,SPI,UART/USART
外圍設備: POR,PWM,WDT
輸入/輸出數(shù): 34
程序存儲器容量: 32KB(32K x 8)
程序存儲器類型: 閃存
RAM 容量: 1.25K x 8
電壓 - 電源 (Vcc/Vdd): 2.7 V ~ 3.6 V
振蕩器型: 外部
工作溫度: -40°C ~ 85°C
封裝/外殼: 44-LCC(J 形引線)
包裝: 管件
97
AT89C51IC2
4301D–8051–02/08
Figure 41. Format and State in the Slave Transmitter Mode
Table 71. Status in slave transmitter mode
S
SLA
R
A
Data
A
Data
P or S
A
A8h
B8h
C0h
P or S
A
C8h
All 1’s
A
B0h
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 SSCS) corresponds
to a defined state of the 2-wire bus
Reception of the
own slave address
and one or more
data bytes
Arbitration lost as master
and addressed as slave
Last data byte transmitted.
Switched to not addressed
slave (AA=0)
Status
Code
(SSCS)
Status of the 2-wire bus and
2-wire hardware
Application Software Response
Next Action Taken By 2-wire Software
To/from SSDAT
To SSCON
STA
STO
SI
AA
A8h
Own SLA+R has been
received; ACK has been
returned
Load data byte or
Load data byte
X
0
1
Last data byte will be transmitted and NOT ACK
will be received
Data byte will be transmitted and ACK will be
received
B0h
Arbitration lost in SLA+R/W as
master; own SLA+R has been
received; ACK has been
returned
Load data byte or
Load data byte
X
0
1
Last data byte will be transmitted and NOT ACK
will be received
Data byte will be transmitted and ACK will be
received
B8h
Data byte in SSDAT has been
transmitted; NOT ACK has
been received
Load data byte or
Load data byte
X
0
1
Last data byte will be transmitted and NOT ACK
will be received
Data byte will be transmitted and ACK will be
received
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